Relevant bibliographies by topics / Anaerob

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Academic literature on the topic 'Anaerob'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Anaerob"

1

Crisnaningtyas, Farida, and Hanny Vistanty. "PENGOLAHAN LIMBAH CAIR INDUSTRI FARMASI FORMULASI DENGAN METODE ANAEROB-AEROB DAN ANAEROB-KOAGULASI." Jurnal Riset Teknologi Pencegahan Pencemaran Industri 7, no. 1 (May 10, 2016): 13–22. http://dx.doi.org/10.21771/jrtppi.2016.v7.no1.p13-22.

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Studi ini membahas mengenai pengolahan limbah cair industri farmasi dalam skala laboratorium dengan menggunakan konsep anaerob-kimia-fisika dan anaerob-aerob. Proses anaerob dilakukan dengan menggunakan reaktor Upflow Anaerobic Sludge Bed reactor (UASBr) pada kisaran OLR (Organic Loading Rate) 0,5 – 2 kg COD/m3hari, yang didahului dengan proses aklimatisasi menggunakan substrat gula. Proses anaerob mampu memberikan efisiensi penurunan COD hingga 74%. Keluaran dari proses anaerob diolah lebih lanjut dengan menggunakan dua opsi proses: (1) fisika-kimia, dan (2) aerob. Koagulan alumunium sulfat dan flokulan kationik memberikan efisiensi penurunan COD tertinggi (73%) pada kecepatan putaran masing-masing 100 rpm dan 40 rpm. Uji coba aerob dilakukan pada kisaran MLSS antara 4000-5000 mg/L dan mampu memberikan efisiensi penurunan COD hingga 97%. Hasil uji coba menunjukkan bahwa efisiensi penurunan COD total yang dapat dicapai dengan menggunakan teknologi anaerob-aerob adalah 97%, sedangkan kombinasi anaerob-koagulasi-flokulasi hanya mampu menurunkan COD total sebesar 72,53%. Berdasarkan hasil tersebut, kombinasi proses anaerob-aerob merupakan teknologi yang potensial untuk diaplikasikan dalam sistem pengolahan limbah cair industri farmasi.
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2

Wuniarto, Erwin, Julius Sampekalo, and Cyska Lumenta. "Analysis of sago starch fermented with aerobic and anaerobic processes as alternative material for fish meal." AQUATIC SCIENCE & MANAGEMENT 2, no. 2 (October 1, 2014): 35. http://dx.doi.org/10.35800/jasm.2.2.2014.12397.

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Title (Bahasa Indonesia): Analisis pati sagu yang difermentasi dengan proses aerob dan anaerob sebagai bahan alternatif pengganti tepung ikan Fish meal is commonly used as the main ingredient in aqua feeds. In this study, sago (Metroxylon spp.) starch was fermented through aerobic and anaerobic processes using Rhizophus sp. The duration of fermentation was 10 days. Based on proximate analysis, the unfermented sago starch had protein content of 1.11%, while the fermented one showed five to eight times increased protein level. The carbohydrate, lipid, and ash contents were found to decline in both aerobic and anaerobic fermentation. On the other hand, water content and crude fiber increased in both aerobic and anaerobic processes. Tepung ikan umumnya digunakan sebagai bahan baku utama dalam pakan organisme budidaya. Dalam penelitian ini, bahan pati sagu (Metroxylon spp.) difermentasi secara aerob maupun anaerob dengan menggunakan Rhizopus sp. Lamanya fermentasi adalah 10 hari. Berdasarkan hasil uji proksimat, kandungan protein pati sagu tanpa fermentasi adalah 1,11 %, sedangkan bahan pati sagu yang difermentasi memperlihatkan peningkatan kandungan nilai proteinnya sebanyak lima sampai delapan kali. Kandungan karbohidrat, lemak, dan kadar abu berkurang pada kedua fermentasi aerob dan anaerob. Sebaliknya, kadar air dan serat kasar meningkat pada kedua proses aerob dan anaerob.
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3

Koleangan, Harry S. J. "AN APPLICATION PROGRAM TO ANALYZE EQUILIBRIUM pH USING VB.NET." JURNAL ILMIAH SAINS 11, no. 1 (April 1, 2011): 61. http://dx.doi.org/10.35799/jis.11.1.2011.44.

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An application program to analyze equilibrium pH of an anaerobic waste solution model had been developed. The equilibrium pH was analyzed using bisection method written in VB.NET 2008 Express Edition program language. Application of the program on the secondary data showed that pH of an anaerobic waste solution was 6.56. PROGRAM APLIKASI UNTUK MENGANALISA KESEIMBANGANpH MENGGUNAKAN VB.NETABSTRAKTelah dilakukan penelitian untuk membuat sebuah program aplikasi dalam menganalisis keseimbangan pH dari model sampah anaerob. Keseimbangan pH dianalisis menggunakan metode biseksi dengan bahasa pemrograman VB.NET 2008. Penerapan program pada data sekunder menunjukkan bahwa pH dari sampah anaerob adalah 6,56.
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4

Desiana, D., and Tjandra Setiadi. "Uji potensi metana biokimia terhadap biolumpur dengan pengolahan awal ozonisasi dan sonikasi." Jurnal Teknik Kimia Indonesia 5, no. 1 (October 2, 2018): 385. http://dx.doi.org/10.5614/jtki.2006.5.1.7.

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The anaerobic digestion is a basic technique in reducing bio-sludge. The eficiency process anaerob doing based on value ratio COD and BOD. One simple test for knowing biochemical methane potential was developed in 1779 by Owen group. A study on BMP (Biochemical Methane Potential) and ATA (Anaerobic Toxicity Assay) on bio-sludge were carried out in this research. The effect of pretreatment to biodegradability and toxicity were also studied The results of experiments showed that toxicity of raw bio-sludge, ozonation, and sonication on bio-sludge have no toxic effect to the production rate of gas on low concentration (around 4%), but it has been toxic on higher concentration. The potential measurement of methane production that was developed by Owen et al., was not accurate enough to be applied on bio-sludge. The extended ATA measurements gave a better result especially on low concentration (around 4%) or on COD level around 1.500 mg/L. Based on extended ATA measurement, biochemical methane production was relatively high as biodegradability valued around 62%. Keywords: Anaerobic Digestion, ATA, BMP, BOD, COD AbstrakProses anaerob merupakan teknik yang paling fundamental untuk mengurangi biolumpur. Uji efisiensi proses anaerob selama ini dilakukan berdasarkan nilai rasio nilai COD dan BOD. Pada tahun 1979, kelompok Owen mengembangkan suatu uji sederhana untuk mengetahui potensi pembentukan metana biokimia yang relatif lebih mewakili kondisi anaerob sebenarnya. Penelitian ini bertujuan untuk menentukan metoda uji potensi pembentukan metana terhadap biolumpur. yakni berdasarkan uji ATA (Anaerobic Toxicity Assay) lanjutan dan metoda BMP (Biochemical Methane Potential) yang dikembangkan oleh kelompok Owen. Selain itu, dalam penelitian ini juga dilakukan uji tingkat racun (ATA). Hasil penelitian memperlihatkan bahwa tingkat racun biolumpur segar, biolumpur hasil ozonasi, dan biolumpur hasil sonikasi cenderung tidak menghambat laju produksi gas pada konsentrasi rendah (4%), namun bersifat raczm pada konsentrasi lebih tinggi, untuk biolumpur, perhitungan potensi pembentukan metana dengan metoda BMP yang dikembangkan oleh kelompok Owen kurang tepat, namun uji ATA lanjutan memberikan hasil lebih baik, terutama pada konsentrasi uji yang rendah (sekitar 4 %) atau pada beban COD berkisar 1.500 mg/L. Potensi pembentukan metana biokimia berdasarkan uji ATA lanjutan ternyata relatif tinggi, dengan nilai biodegradabilitas yang mencapai sekitar 62%.Kata Kunci: ATA, BMP, BOD, COD, Proses Anaerob
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Ahmad, Adrianto, Said Zul Amraini, and Yance Andre Luturkey. "Kinerja bioreaktor hibrid anaerob bermedia tandan dan pelepah sawit dalam penyisihan cod." Jurnal Teknik Kimia Indonesia 10, no. 3 (October 2, 2018): 134. http://dx.doi.org/10.5614/jtki.2011.10.3.4.

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Performance of anaerobic hybrid bunch-frond palm mediated bioreactor in COD elimination The high contents of Chemical Oxygen Demand (COD) in palm oil mill wastewater is able to cause the obstructed connection between air and a receiver of water body so that can make the lessening oxygen solubility in the receiver of water body. Hence, it is important to do innovation to get a good technology process of wastewater in order that the contents of COD become low. One of the wastewater processes can be done by using hybrid anaerobic bioreactor in eliminating COD that exists in palm oil mill wastewater. This research uses two units of hybrid anaerobic bioreactor i.e. hybrid anaerobic bioreactor mediated immobilization cell of empty stem palm and hybrid anaerobic bioreactor mediated immobilization cell of in 2.5 m3 of work volume. The process is done by using variation of imposition organic rate i.e. 10, 12.5, 14.28, 16.6, 20, 25, 33.3, and 50 kg COD/m3-day. The result of research showed that the highest eliminating COD is 82.67% in 14.28 kg COD/m3-day in bioreactor filled with empty palm fruit bunch and 84% for imposition organic rate 16.6 kg COD/m3-day in bioreactor filled with palm midrib. Therefore, both hybrid anaerobic bioreactors can be used for processing oil palm mill wastewater in high load of COD. Keywords: hybrid bioreactor, COD, wastewater, palm midrib, empty stem palmAbstrakKandungan Chemical Oxygen Demand (COD) yang tinggi dalam limbah cair pabrik minyak sawit dapat menyebabkan terhambatnya kontak antara udara dengan badan air penerima sehingga mengakibatkan berkurangnya kelarutan oksigen dalam badan air penerima tersebut. Oleh karena itu, penting dilakukan terobosan baru untuk mendapatkan teknologi pengolahan limbah cair yang handal agar kandungan COD menjadi rendah. Salah satu teknologi pengolahan limbah cair tersebut adalah bioreaktor hibrid anaerob. Penelitian ini bertujuan mengkaji kinerja beberapa jenis bioreaktor hibrid anaerob dalam penyisihan COD dalam limbah cair pabrik minyak sawit. Pada penelitian ini digunakan dua unit bioreaktor yakni bioreaktor hibrid anaerob dengan media imobilisasi sel tandan kosong sawit dan bioreaktor hibrid anaerob dengan media imobilisasi sel pelepah sawit dengan volume kerja 2,5 m3. Proses pengolahan dilakukan dengan variasi laju pembebanan zat organik, yaitu10; 12,5; 14,28; 16,6; 20; 25; 33,3; 50 kg COD/m3hari. Hasil penelitian menunjukkan bahwa penyisihan COD yang tertinggi dicapai sebesar 82,67% dengan laju pembebanan organik 14,28 kg COD/m3hari pada bioreaktor bermedia tandan kosong sawit dan 84% untuk laju pembebanan organik 16,6 kg COD/ m3hari pada bioreaktor bermedia pelepah sawit. Dengan demikian, kedua bioreaktor hibrid anaerob ini dapat digunakan untuk mengolah limbah cair industri minyak sawit dengan beban COD tinggi.Kata kunci: bioreaktor hibrid, COD, limbah cair, pelepah sawit, tandan kosong sawit
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Mirandri, Syafiyyah Dzikra, and Yayok Suryo Purnomo. "PENURUNAN KADAR DETERGEN (LAS) DAN FOSFAT DENGAN METODE BIOFILTER AEROB-ANAEROB DAN ANAEROB-AEROB." EnviroUS 1, no. 2 (March 9, 2021): 67–75. http://dx.doi.org/10.33005/envirous.v1i2.39.

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Limbah laundry identik dengan pencemar bahan organik berupa detergen (LAS) dan fosfat, apabila bahan tersebut dibuang langsung ke lingkungan dan terakumulasi akan menimbulkan fenomena eutrofikasi. Biofilter merupakan pengolahan biologis dengan bakteri biakan melekat, dalam prosesnya media adalah tempat melekat dan tumbuhnya bakteri. Biofilter kombinasi merupakan kombinasi proses pengolahan anaerob dengan aerob atau pun sebaliknya. Tujuan dari penelitian ini untuk mengetahui efektifitas dan optimalisasi pengolahan limbah laundry dalam menurunkan kadar detergen (LAS), dan fosfat dengan metode Biofilter kombinasi. Variabel yang diperlakukan dalam penelitian ini yaitu kombinasi sistem biofilter aerob-anaerob dengan biofilter anaerob-aerob dan waktu sampling (2, 4, 6, 8, dan 10 jam). Variasi kombinasi sistem biofilter aerob-anaerob dapat menurunkan kadar detergen (LAS) sebesar 97,08% dan fosfat sebesar 85,39%, sistem biofilter anaerob-aerob dapat menurunkan kadar detergen (LAS) sebesar 97,19% dan fosfat sebesar 82,51%. Variabel waktu sampling menghasilkan efisiensi penurunan kadar detergen (LAS) sebesar 88,95 – 98,83%, dan fosfat sebesar 84,82 – 86,96% secara stabil. Kata kunci: Biofilter Aerob-Anaerob, Biofilter Anaerob-Aerob, Air Limbah Laundry, Detergen (LAS), Fosfat.
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Saputra, Beny, Agus Sutanto, Mia Cholvistaria, Suprayitno Suprayitno, and Nala Rahmawati. "IDENTIFIKASI BAKTERI PEREDUKSI SULFAT PADA KAWAH AIR PANAS NIRWANA SUOH LAMPUNG BARAT." BIOLOVA 2, no. 2 (August 30, 2021): 122–27. http://dx.doi.org/10.24127/biolova.v2i2.1089.

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Abstrak: Bakteri pereduksi sulfat atau Sulfate-reducing bacteria (SRB) adalah jenis bakteri obligat anaerob kemolitrotof memanfaatkan donor electron H2. Kemampuan SRB mereduksi sulfat menjadi sulfida mampu mengendapkan logam toksik meliputi Cd, Cu, dan Zn sebagai logam sulfida. SRB memerlukan substrat organik seperti asam piruvat yang dihasilkan oleh aktivitas anaerob lainnya. Mekanisme SRB dalam melakukan reduksi sulfat, sulfat digunakan sebagai sumber energi sebagai akseptor elektron dan menggunakan sumber karbon (C) sebagai donor elekton dalam metabolisme dan bahan penyusun sel. Pada kondisi anaerob bahan organik akan berperan sebagai donor elektron. Pembentukan senyawa sulfida melalui proses reduksi yang ditandai oleh penambahan elektron dari bahan organik yang menyebabkan turunnya konsentrasi sulfat dan naiknya pH lingkungan. SRB pada kawah air panas nirwana ini hidup secara anaerob pada suhu lingkungan 600C - 1000C dengan pH 7,4 tingkat kekeruhan air cukup keruh dan kandungan air yang mengandung blerang dengan indikator bau seperti telur busuk dan lingkungan sekitar terdiri dari sedimen batu kapur. Abstract : Sulfate-reducing bacteria (BPS) is a type of chemolithotroph obligate anaerobic bacteria that utilize H2 electron donors. The ability of BPS to reduce sulfate to sulfide is able to precipitate toxic metals including Cd, Cu, and Zn as metal sulfides. BPS requires organic substrates such as pyruvic acid which is produced by other anaerobic activities. The BPS mechanism in reducing sulfate, sulfate is used as an energy source as an electron acceptor and uses a carbon source (C) as an electron donor in metabolism and cell building material. Under anaerobic conditions, organic matter will act as an electron donor. The formation of sulfide compounds through a reduction process is characterized by the addition of electrons from organic matter which causes a decrease in sulfate concentration and an increase in environmental pH. BPS in this nirvana hot spring crater lives anaerobically at an environmental temperature of 600C - 1000C with a pH of 7.4 the level of turbidity of the water is quite cloudy and the water content contains sulfur with an indicator of smell like rotten eggs and the surrounding environment consists of limestone sediments
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Truzsi, Alexandra, Ildikó Bodnár, and Zoltán Fülöp. "A debreceni szennyvíztisztító telep biogáz termelő fermentációs folyamatainak nyomon követése kémiai módszerekkel." International Journal of Engineering and Management Sciences 2, no. 1 (March 20, 2017): 79–83. http://dx.doi.org/10.21791/ijems.2017.1.15.

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A szennyvíziszap kezelésének egyik gazdaságos módja az anaerob lebontás, melyet széles körbe alkalmaznak szennyvíziszapok stabilizálására és nagy szerves anyag tartalmú szennyvizek tisztítására is [1]. Minden jól működő anaerob fermentor megegyezik abban, hogy benne a szerves anyag átalakul metán tartalmú biogázzá, amely fedezi többek között a szennyvíztisztító telep hő- és villamosenergia-fogyasztásának jelentős részét. A biogáz mennyiségének növelése kiemelt feladat, melyet az anaerob lebontás folyamatainak alapos megismerésével érhetünk el [2]. Jelen tanulmány célja a Debreceni Vízmű Zrt. Szennyvíztisztító Üzemében az anaerob szennyvíziszap kezelésének optimalizálása. Kutatómunkánkban kiemelten vizsgáltuk a rothasztó tornyokban lejátszódó folyamatokat, s azok hatását a biogáz kihozatalra, minőségre.
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Urbán, Edit, and Márió Gajdács. "Az anaerob baktériumok szerepe az agyi tályogokban : Irodalmi összefoglaló." Ideggyógyászati szemle 74, no. 1-2 (2021): 17–25. http://dx.doi.org/10.18071/isz.74.0017.

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Az agytályog még napjainkban is potenciálisan súlyos következményekkel járó, életveszélyes betegség, ami jelentős diagnosztikus kihívást jelent nemcsak az idegsebészeknek, mikrobiológusoknak, de a neurológusoknak, pszichiátereknek, infektológusoknak, sürgősségi és intenzív osztályok orvosainak is – hiszen a gyakran láztalan, szisztémás infekció jeleit nem mutató beteg panaszai, tünetei hátterében az etiológia sokszor lassan tisztázódik. Az agyi tályog etiológiája általában polimikrobiális, leggyakrabban különféle aerob és obligát anaerob bakté­riumokkal. Minden infektív ágens kiváltotta kórképben a lehetséges kórokozók számbavételével kell tevékeny­ségünket megtervezni. Az agyi tályogok anaerob etioló­­giá­jára vonatkozó epidemiológiai tanulmányok gyakran jelentek meg az 1960-as és 1980-as évek között, manapság azonban erről a témáról nagyon kevés aktuális publikáció áll rendelkezésre. Az anaerob baktériumok szerepe a kórképben nagyon sokáig feltehetőleg aluldiagnosztizált volt, mivel sok laboratórium nem rendelkezett az anaerob baktériumok számára is megfelelő laboratóriumi felkészültséggel. A jelen összefoglaló közlemény célja az elérhető szakirodalom összefoglalása az obligát anaerob baktériumok agytályogokra vonatkozó etiológiájára vonatkozóan, beleértve ezek gyakoriságát és a jelenlegi terápiás ajánlásokat.
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Moenir, Misbachul, S. Sartamtomo, and Sri Moertinah. "PENGOLAHAN AIR LIMBAH INDUSTRI TEH BOTOL DENGAN TEKNOLOGI BIOLOGIS ANAEROBIK UASB – WETLAND." Jurnal Riset Teknologi Pencegahan Pencemaran Industri 5, no. 2 (November 1, 2014): 59–66. http://dx.doi.org/10.21771/jrtppi.2014.v5.no2.p59-66.

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Industri minuman ringan merupakan salah satu industri yang mengeluarkan air limbah dengan beban organik yang cukup tinggi. Sistem pengolahan air limbah yang berkategori low rate seperti sistem activated sludge yang sekarang diterapkan di industri kurang sesuai lagi untuk mengolah air limbah yang mengandung cemaran organik tinggi dan bersifat kompleks terlarut. Sistem Up-flow Anaerobic Sludge Blanket (UASB) adalah salah satu proses anaerobik dengan efisiensi tinggi yang dapat beroperasi pada beban organik tinggi. Proses pengolahan dengan wetland sebagai pengolahan lanjutan dapat menurunkan kadar cemaran organik lebih lanjut. Pada penelitian digunakan air limbah yang berasal dari salah satu industri teh botol di Jawa Tengah. Sumber mikroba anaerob yang digunakan sebagai seeding reaktor UASB (2 unit paralel) berasal dari lumpur anaerob yang terbentuk pada pengolahan air limbah industri tahu yang telah berfungsi dengan baik. Waktu tinggal dalam reaktor UASB secara total selama 19 jam dengan debit 2.297 l/hari. Pengolahan lanjutan dari reaktor UASB dilakukan dengan pengolahan wetlandHasil penelitian menunjukkan bahwa reaktor UASB I dan II dapat mereduksi COD dengan efisiensi tertinggi 88,51% dan pengolahan dengan wetland tertinggi 85,02%, selanjutnya pengolahan air limbah dengan kombinasi UASB dan wetland dapat mereduksi beban cemaran COD antara 97,65 – 98,90 % dan hasil effluen sudah memenuhi baku mutu air limbah industri minuman dalam botol menurut Peraturan Daerah Provinsi Jawa Tengah Nomor 5 Tahun 2012, yaitu COD = 35,44 mg/l, TSS = 16 mg/l, dan BOD5 = 13,44 mg/l.
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Dissertations / Theses on the topic "Anaerob"

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Aldaron, Mattias. "Anaerob rening vid StoraEnso Skoghalls Bruk." Thesis, Karlstad University, Division for Engineering Sciences, Physics and Mathematics, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-4403.

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An analysis of a specific application of anaerobic wastewater treatment at a pulp and board mill, Stora Enso Skoghall, was carried out. A literature study was done and effluent wastewater from CTMP pulp production was analyzed. The analysis consisted of a broad constituent analysis and an anaerobic treatment trial. Results from these test where used to calculate the treatment effectiveness and resulting energy potential at the mill.

The literature study and constituent analysis showed that toxicity of the water to be treated, due to wood extractives and sulphur content, was of concern. Detoxification chemicals targeting these constituents where used in the anaerobic treatment trial. The trial consisted of a two chamber upflow reactor and aerobic post treatment. The result of the trial is that the water of concern has about 50% anaerobically degradable content. A full scale implementation of anaerobic wastewater treatment would result in a methane production of 3,76 to 7,76 GWh/yr. An application of anaerobic wastewater treatment will also result in electricity savings, in aerated pond, and increase the capacity margin on current sludge handling techniques.

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Lind, Forsman Sanna. "Effekten av höghöjdsvistelse på anaerob arbetsförmåga." Thesis, Mittuniversitetet, Institutionen för hälsovetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-22283.

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Syftet med denna studie var att undersöka om vistelse på hög höjd påverkar den anaeroba arbetsförmågan. Sex aktiva universitetsstudenter, fyra män och två kvinnor, deltog frivilligt i studien. Expeditionen till Nepal varade i 40 dagar och under den perioden sov och vandrade försökspersonerna mellan 1400 och 5100 meter över havet. Före och efter expeditionen genomförde försökspersonerna ett anaerobt wingatetest där peak power, average power, minimum power and power drop uppmättes. Resultatet visade en signifikant sänkning av average power efter den genomförda expeditionen på hög höjd, med ett medelvärde på 8.44 ± 0,84 w/kg före expeditionen och 7.81 ± 0,87 w/kg efter expeditionen. Inga signifikanta förändringar sågs hos övriga uppmätta parametrar. Konklusionen är att average power försämras efter 40 dagars vistelse på hög höjd.
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Ferner, Janne. "Aerob och anaerob träning i svensk elitungdomsfotboll." Thesis, Gymnastik- och idrottshögskolan, GIH, Tränarlänken, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:gih:diva-1378.

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Gregeby, Erik. "Optimeringsunderlag för anaerob rötning av flytgödsel från nötkreatur." Thesis, Växjö University, School of Technology and Design, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-5519.

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Produktions- och optimeringspotentialen vid anaerob rötning av flytgödsel från nötkreatur granskades. Detta genom att, i laboratoriemiljö, undersöka förändringar i processtabilitet, gasproduktion och metanhalt vid tillsats av kycklinggödsel och pH-buffert med flytgödsel från nötkreatur som grundsubstrat. Tillsatsen av pH-buffert underlättade tillväxtfasen för mikroorganismerna, snabbare ökning i metanhalt och den totala metangasproduktionen ökade. Skillnaden var som störst under tillväxtfasen och avtog från stationärfas och framåt. Tillsats av kycklinggödsel har i detta fall inhiberat processen, möjligtvis på grund av ammoniakinhibering vid tillsats av det kväverika substratet som kycklinggödsel är.


Production potential and basis for optimization of anaerobic digestion with cattle manure was reviewed by examining process stability, gas production and methane content in a laboratory environment via addition of pH buffer and chicken manure with slurry from cattle manure as basic feedstock. Addition of pH buffer facilitated the growth of microorganisms by more rapid increase in methane content and greater quantities of produced methane gas. The effects were high during the growth stage but decreased, during and after, the stationary phase. Addition of chicken manure caused inhibition of the process, probably caused by ammonia inhibition from high nitrogen content in chicken manure.

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Lindmark, Johan. "Anaerob nedbrytning av TNT : Ett bioreaktorförsök på Vingåkersverken." Thesis, Mälardalen University, School of Sustainable Development of Society and Technology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-4480.

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A bioslurry reactor was built for the bioremediation of TNT contaminated waste from the demilitarization industry. The field test was conducted at Vingåkersverken in Vingåker, Sweden, to see if results from laboratory studies could be repeated in a full scale reactor. The goal of the project was to optimize the reactor to such a degree that it could be used to handle the waste produced at Vingåkersverken and also that this technique could be applied for remediation of contaminated soils. Unfortunately the samples taken during the full scale field test were destroyed by the shipping company and no analysis was possible. A later attempt by the Biorex research group has also been unsuccessful to reduce the amount of TNT using the bioreactor. How are we going to reach the results from the laboratory studies? The work continues.

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Montelius, Josefine. "Förbehandling av skogsindustriellt slam för ett ökat metanutbyte vid rötning : En kombination av termisk och kemisk förbehandling." Thesis, Karlstads universitet, Institutionen för ingenjörs- och kemivetenskaper, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-31178.

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Vid tillverkning av massa och papper förorenas årligen 505 miljoner kubikmeter vatten som måste renas innan det släpps tillbaka till omgivningen. Vid reningen avskiljs först stora partiklar som sedan avvattnas och förbränns. Vattnet som blir kvar genomgår ytterligare en rening, varvid det bildas bioslam. Bioslammet innehåller mycket intracellulärt vatten, vilket gör det kostsamt och energikrävande att avvattna. Det är även sedan 2005 förbjudet att dumpa organiskt material, varför en mer ekonomiskt attraktiv behandling av slammet är anaerob nedbrytning. I denna nedbrytning omvandlas det organiska materialet till metan och koldioxid där metanet är den eftertraktade gasen. Bioslammet innehåller dock partiklar såsom träfiberrester och mikroorganismer med komplex struktur och är näringsfattigt. Någon form av sönderdelande förbehandling underlättar därför rötningsprocessen. I detta projekt undersöktes termisk förbehandling i kombination med kemisk förbehandling på bioslam från Stora Enso Skoghalls bruk på Hammarö. Själva rötningen skedde i två omgångar varav den första omgången med termisk förbehandling vid 70C och den andra vid 140C. Den kemiska förbehandlingen skedde med tillsats av lut (natriumhydroxid), kalk (kalciumhydroxid) och syra (fosforsyra) vid pH 9 och 11 för baserna och pH 2 och 4 för syran. Även neutrala prov (endast värmebehandling) och ett blankprov (ingen förbehandling) gjordes. Bioslammet ympades med kommunalt slam från Fiskartorpets reningsverk i Kristinehamn som har en mesofil bakteriekultur. Rötningen varade i 19 dagar per omgång i en temperatur på 35C och skedde satsvis i E-kolvar försedda med påsar för gasuppsamling. Totalt rötades 42 prov per omgång som utgjordes av sju mätpunkter á sex replikat för goda statistiska underlag. Resultaten gav en indikation för högst metanproduktion för proven behandlade med kalk vid 140C och för provet utan kemisk förbehandling vid 140C. Lägst produktion hade det kalkbehandlade provet vid pH 9 och 70C följt av blankprovet. Lutproven gav lägre metanproduktion vid 140C än vid 70C och fosforsyran hade så gott som oförändrad produktion mellan temperaturerna. Gemensamt för alla prover som behandlats vid 70C var att de fick en högre procentandel metan då de behandlats vid 140C. De resultat som erhållits är dock osäkra då det i vissa fall var stor spridning mellan provens biogasproduktion inom de enskilda förbehandlingsområdena.
In the pulp and paper process 505 million tons of water are polluted annually, which has to be purified before it is returned to the surrounding lakes. When the water is treated bigger particles are first separated to form sludge, then dewatered and finally incinerated. The excess water is further treated were a type of sludge  bio sludge  is formed. The bio sludge contains high concentration of intracellular water, why it is expensive and energy demanding to dewater. It is also forbidden to dump organic waste since 2005, why a more economically attractive treatment of the water is anaerobic digestion. In the digestion organic compounds is converted into methane and carbon dioxide where the methane is the desired gas. The bio sludge also contains fiber residues and microorganisms with complex structure and is nutrient-poor, which makes it hard to digest. Some kind of disintegrating pretreatment is needed and co-digestion with a more nutrient-rich sludge to facilitate the digestion process. In this project thermal pretreatment in combination with chemical pretreatment was examined on bio sludge from Stora Enso Skoghalls bruk at Hammarö. The anaerobe digestion was done by two rounds whereof the first round thermal pretreated at 70C and the second at 140C. The chemical pretreatment was done by additive of sodium hydroxide, calcium hydroxide and phosphoric acid at pH 9 and 11 for the bases and pH 2 and 4 for the acid. Also neutral samples (no chemical pretreatment) and a reference sample (no pretreatment) were done. The bio sludge were co-digested with municipal sludge from Fiskartorpets reningsverk in Kristinehamn which has a mesophilic bacterial culture. The anaerobic digestion lasted for 19 days per round at a temperature of 35C and were done batch wise in E-flasks provided with a small bag for gas collection. Totally 42 samples were made per round which consisted of seven measurement points and six replicates each for a good statistical basis. The results gave an indication of the highest methane production for the samples treated with calcium hydroxide at 140C and the neutral sample treated at 140C. The sample treated with calcium hydroxide at pH 9 and 70C gave the lowest production of methane followed by the reference sample. The samples treated with sodium hydroxide gave a lower methane production at 140C than at 70C while the acid treated samples had almost the same production at the two different temperatures. All the samples had in common a higher proportion of methane in the biogas when treated at 140C than at 70C. The results should be taken with caution since the distribution amongst the samples within the same pretreatment method sometimes is very high.
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Hedlund, Kristoffer, and Olle Hallkvist. "Effekterna av praktisk ocklusionsträning periodiserat med ett traditionellt styrketräningsprogram på anaerob prestation." Thesis, Umeå universitet, Idrottsmedicin, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-104098.

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Background: Practical blood flow restriction (pBFR) combined with resistance training has been proven to facilitate muscle strength despite training at low intensity. However, research investigating the effects of long-term pBFR-training and its periodization with strength training (ST) at a higher intensity is lacking, as well as the effects of occlusion training on blood lactate levels (BLL) over time. Purpose: To compare the effects of 2 weeks of pBFR training followed by 2 weeks of ST (BFR-ST) with 2 weeks of ST followed by 2 weeks of pBFR training (ST-BFR) on anaerobic performace and BLL. Method: 5 adults (age 23 ± 2 years) with a minimum of 1 year of ST experience were recruited and randomized into BFR-ST (n=2) or ST-BFR (n=3). Anaerobic performance was measured using a 30-s Wingate-test and BLL samples were collected <1 and 5 minutes post-Wingate. Data and samples were collected before the intervention and after the 2 protocols. Results: No differences were seen between groups in anaerobic output or BLL after 4 weeks of training (p>0,1 for all values). A decrease in time to peak power (tPP) were seen in both groups with an advantage for BFR-ST (-37 ± 8 %) over ST-BFR (-27 ± 22 %). BLL decreased after 2 weeks of pBFR (-14 ± 26 % at <1 min and -7 ± 14 % at 5 min) and increased after 2 weeks of ST (+26 ± 45 % at <1 min and +8 ± 20 % at 5 min). Conclusion: The results of this study suggests that occlusion training in conjunction with resistance training can reduce tPP, that BFR-ST has greater impact on this quality compared to ST-BFR and that pBFR-training seems to lower post-Wingate BLL. Thus pBFR-training combined with ST could be an interesting alternative to a traditional periodized resistance training program.
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Grundestam, Jonas. "Rening av avloppsvatten med anaerob membranbioreaktor och omvänd osmos." Thesis, Uppsala University, Department of Earth Sciences, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-88843.

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This master's theses was carried out on assignment from Stockholm Vatten AB as a part of a project developing new waste water treatment techniques. The goal of the theisis has been to evaluate an anaerobic membrane bioreactor for treatment of waste water from Hammarby Sjöstad. The bioreactor has not been heated and the main interest has been to study the gas production, power consumption and the reduction of organic matter and nutrients.

The system has been completed with a reverse osmosis unit and a total of four batch runs have been made with good results. The use of reverse osmosis allows nutrient in the waste water to be reintroduced into circulation as the reverse osmosis concentrate can be used as crop nutrient.

The membrane unit is of VSEP ("Vibratory Shear Enhanced Processing") type and an extensive membrane test has been conducted. This so called L-test helped determine the most suitable type of membrane for the system to allow a higher ±ux and thus lower power consumption. The L-test gave good results and a new membrane with a poresize diameter of 0,45 μm was used.

The organic load on the bioreactor has been more or less constant, around 0,7 kg COD/day, during the seven weeks of testing. The reduction over the entire system including reverse osmosis has been large, around 99 % regarding organic matter and phosporus and 93 % for nitrogen, making the system suitable for waste water treatment except for high power consumption, around 2 kWh/m3. The production of methanegas has worked although it has been quite low, with average values of 0,13 m3 CH4/kg reduced COD.


Examensarbetet är utfört på uppdrag av Stockholm Vatten AB som en del av det pilotprojekt som utvärderar nya tekniker för avloppsvattenrening för Hammarby Sjöstad. Målsättningen med studien har varit att utvärdera ett system bestående av en anaerob membranbioreaktor för behandling av avloppsvatten från Hammarby Sjöstad. Bioreaktorn har inte varit uppvärmd och det som har studerats är reningseffekten, biogasproduktionen samt energiåtgången.

Systemet har även innefattat en omvänd osmosanläggning och totalt har fyra försök med denna gjorts med goda resultat. Analyser har koncentrerats till att utvärdera reduktion av organiskt material över membranbioreaktorn och av närsalter och metaller över omvänd osmos anläggningen. Bakgrunden till att använda omvänd osmos är att öka återföringen av näringsämnen från avloppsvatten. Resultatet av försöken med omvänd osmos gav ett koncentrat med högt näringsinnehåll och låg halt av tungmetaller vilket ger möjligheten att sprida det på åkermark.

Membranenheten är av typen VSEP ("Vibratory Shear Enhanced Processing") och ett membrantest har även utfötts för att finna det membran som passar systemet bäst med avseende på flöde och energiförbrukning. Det så kallade L-testet var omfattande och gav en klar bild över vad som skulle vara det bästa membranet. Det membran som visade sig passa systemet bäst var ett membran med en porstorlek på 0,45 μm. Belastningen av organiskt material på reaktorn under försöksperiodens sju veckor har varit mer eller mindre konstant och låg, cirka 0,7 kg COD/dygn. Reduktionen över hela systemet inklusive omvänd osmosanläggningen med avseende på organiskt material och fosfor har varit mycket hög, omkring 99 %. Reduktionen av kväve var som högst 93 %. Gasproduktionen har fungerat och har i genomsnitt varit omkring 0,13 m3 CH4/kg reducerad COD.

Energiförbrukningen för systemet i motsvarande fullskala blev omkring 2 kwh/m3.

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Lagerkvist, Anders. "Tvåstegs anaerob nedbrytning : en alternativ behandlingsteknik för upplagt hushållsavfall." Doctoral thesis, Luleå tekniska universitet, Geovetenskap och miljöteknik, 1995. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-25697.

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Gannholm, Catharina. "Utvärdering av anaerob behandling av hushållsspillvatten och tekniker för efterbehandling." Thesis, Uppsala University, Department of Earth Sciences, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-88896.

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The continuous process of urbanization results in demands on research and development for ecological and sustainable city development. Because of this, the current systems for wastewater treatment may have to be improved. In order to evaluate new technologies for municipal wastewater treatment, a development project has been initiated for the new district Hammarby Sjöstad in Stockholm. The project is lead by the company Stockholm Water. High environmental standards have been put up for the district, as it must be twice as good as an ordinary new district. To achieve this goal, a new water treatment plant is planned to be build.

In the testing facility Sjöstadsverket, several new water treatment processes for municipal wastewater are being evaluated. This thesis is concerned with the evaluation of one of these processes. The process in question is anaerobic and consists of the following steps: pre-treatment, UASB (Upflow Anaerobic Sludge Blanket), aerobic polishing for nitrogen reduction, a drum filter and reverse osmosis. The evaluation is performed by analysis of water sample taken from the whole process.

It is difficult to make any conclusions about the process as a whole, since not all of the individual parts have been in use at the same time. The production of gas in the UASB system has been quite low. The cause of this is probably that gas is dissolved in the effluent water. The aerobic polishing is sensitive and it will need adjustments of the pH-value in order to treat the water as planned. The use of chemical precipitation of phosphorus over the drum filter does not reduce the amount of phosphorus below the desired level. Furthermore, the demands on the treated water cannot be reached with the use of reverse osmosis, at least not in its current implementation.


Den allt större inflyttningen till städer och tätorter har gjort att behoven av forskning och utveckling kring ekologiskt hållbar stadsutveckling har ökat. Detta innebär i sin tur att det befintliga systemet för avloppsvattenrening kan behöva förändras. För att utvärdera ny och delvis obeprövad teknik inom behandling av avloppsvatten har ett utvecklingsprojekt startat för Stockholms nya stadsdel Hammarby Sjöstad. Stockholm Vatten har fått i uppgift att leda projektet. För stadsdelen har ett antal ambitiösa miljömål formulerats vilka i korthet innebär att stadsdelen skall vara dubbelt så bra som övrig nybyggnation. För att klara dessa miljömål görs förberedelser för ett eget reningsverk i stadsdelen.

I Stockholm Vattens pilotanläggning Sjöstadsverket utvärderas en rad olika behandlingslinjer för rening av avloppsvatten från hushåll och syftet med detta examensarbete är att utvärdera en av dessa försökslinjer. Försökslinjen är anaerob och består av försedimentering, UASB (Upflow Anaerobic Sludge Blanket), ett biologiskt poleringssteg för kvävereduktion, trumfilter samt omvänd osmos (RO). Utvärderingen har gjorts genom analyser av vattenprover längs försökslinjen.

Det är svårt att dra några slutsatser om linjen som helhet eftersom inte alla ingående komponenter varit igång samtidigt så som planerat. Gasproduktionen över UASB-systemet har varit relativt låg och det beror troligen på att en del av gasen löser sig i det utgående vattnet. Den biologiska poleringen för kvävereduktion är en känslig process som kommer att behöva pH-justeras för att klara att behandla vattnet från Sjöstaden. Med nuvarande utformning av anläggningen kan man inte med kemisk fällning av fosfor över trumfiltret komma ner under utsläppsgränserna. Kraven på utgående vatten kan inte heller nås med den RO som finns på Sjöstadsverket idag.

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Books on the topic "Anaerob"

1

Bode, Harro. Beitrag zur Anaerob-Aerob-Behandlung von Industrieabwässern. Hannover: [Institut für Siedlungswasserwirtschaft und Abfalltehnik der Universität Hannover], 1985.

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Mennerich, Artur. Beitrag zur anaerob-aeroben Behandlung von Sickerwässern aus Hausmülldeponien. Braunschweig: Institut für Siedlungswasserwirtschaft, Technische Universität Braunschweig, 1988.

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C, Dubourguier H., ed. Biology of anaerobic bacteria: Proceedings of the International Seminar on Biology of Anaerobic Bacteria, Lille, France, June 17-18, 1986. Amsterdam: Elsevier, 1986.

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S, Knapp J., and Shoesmith J. G, eds. Anaerobic bacteria. Glasgow: Blackie, 1987.

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UK Interdepartmental Anaerobic Digestion Seminar (1991 Solihull, England). Anaerobic DigestionSeminar. Oxfordshire: Harwell Laboratories, 1991.

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1924-, Sutter Vera L., ed. Anaerobic infections. 6th ed. Kalamazoo, Mich: Upjohn, 1986.

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Lance, George W., and Mulligan Maury E, eds. Anaerobic infections. Chicago: Year Book Medical Publishers, 1986.

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S, Knapp J., and Shoesmith J. G, eds. Anaerobic bacteria. Glasgow: Blackie, 1987.

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Holland, K. T., J. S. Knapp, and J. G. Shoesmith. Anaerobic Bacteria. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4613-1775-3.

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Symposium, Anaerobe Discussion Group. Anaerobes today: Proceedings of the Fifth Anaerobe Discussion Group Symposium held at Churchill College, University of Cambridge, July 23-25, 1987. Edited by Hardie J. M, Borriello S. Peter, Hudson M. J. 1940-, and Lysons R. J. Chichester [England]: Wiley, 1988.

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Book chapters on the topic "Anaerob"

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Bährle-Rapp, Marina. "anaerob." In Springer Lexikon Kosmetik und Körperpflege, 34. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_609.

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Bochdansky, Th, H. Lechner, N. Bachl, and R. Baron. "Anaerob-alaktazide Meßdatenerfassung und deren Bezug zur aeroben Leistungsprognose." In Sportmedizin — Kursbestimmung, 472–76. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-72571-5_100.

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Gooch, Jan W. "Anaerobe." In Encyclopedic Dictionary of Polymers, 873. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_13116.

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Sanz, José Luis. "Anaerobe." In Encyclopedia of Astrobiology, 93–94. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_75.

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Sanz, José Luis. "Anaerobe." In Encyclopedia of Astrobiology, 1–2. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-27833-4_75-2.

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Sanz, José Luis. "Anaerobe." In Encyclopedia of Astrobiology, 44. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-11274-4_75.

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Cypionka, Heribert. "Anaerobe Atmungsprozesse." In Grundlagen der Mikrobiologie, 169–86. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-662-07586-9_15.

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Cypionka, Heribert. "Anaerobe Atmungsprozesse." In Grundlagen der Mikrobiologie, 159–76. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-662-07587-6_15.

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Scheiber, P. "Anaerobe Keime." In Hygiene in Krankenhaus und Praxis, 109–12. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-70813-8_11.

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Wiederkumm, Martin. "Anaerobe Wundinfektionen." In Leitfaden für septische Intensivpflege, 153–55. Vienna: Springer Vienna, 2000. http://dx.doi.org/10.1007/978-3-7091-6765-6_9.

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Conference papers on the topic "Anaerob"

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Allaily, Allaily, Miswar Miswar, S. Rianah, Y. Usman, Zulfan Zulfan, and MA Yaman. "Potensi Pakan Fermentasi Anaerob Menggunakan Bahan Pakan Lokal untuk Ternak Itik." In Prosiding Seminar Nasional Teknologi Peternakan dan Veteriner. Pusat Penelitian dan Pengembangan Peternakan, 2017. http://dx.doi.org/10.14334/pros.semnas.tpv-2017-p.430-437.

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Chin, S. K., D. T. Tan, H. M. Tan, and P. E. Poh. "Preservation of mesophilic mixed culture for anaerobic palm oil mill effluent treatment by convective drying methods." In 21st International Drying Symposium. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/ids2018.2018.7295.

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While anaerobic digestion is a reliable method that treats the waste and produces renewable biomethane fuel, the necessary sludge in liquid form is difficult to handle due to the constant biogas generation. Therefore, this study investigates the possibility of convective air drying, namely heat pump and hot air circulation oven as preservation methods for anaerobic microbial sludge. Drying was conducted at various temperatures, ranging from 22℃ to 70℃. The study found that heat pump drying at 22℃ resulted in highest COD removal of 55.3% as well as the least log reduction in methanogens and anaerobes at 1.4 and 2.4, respectively.Keywords: Chemical Oxygen Demand (COD); Heat pump drying; Hot air drying; Log reduction; Methane yield
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Ren, Nanqi, Yongfeng Li, Maryam Zadsar, Lijie Hu, and Jianzheng Li. "Biological Hydrogen Production In China: Past, Present and Future." In ASME 2005 International Solar Energy Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/isec2005-76101.

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As a new clean energy source and important material, the use and demand of hydrogen are increasing-rapidly. So that bio-hydrogen producing technology moves toward cutting down the operation costs in recent years. Biohydrogen production capacity improvement and cost reduction are two key points for industrialization of the process. Biohydrogen production has been studied in China for over 20 years in both photosynthetic hydrogen production and fermentative processes fields. The anaerobic process of fermentative hydrogen production has been developing in China since 1990s. The isolation and identification of high efficient bio-hydrogen production anaerobic bacteria is an important foundation of fermentative bio-hydrogen production process by anaerobic digestion of organic wastewater. The paper focuses on: (1) Fermentative biohydrogen production system, (2) Laboratory experiments and pilot scale tests for continued hydrogen production, (3) Fermentation types and their engineering control, (4) isolation, culture media and characterization of anaerobes, (5) Applications of pure bacteria, (6) Fundamental researches including ecology, genetics and improvements, (7) Development of two-phase anaerobic process of H2-producing and methanogenic phases as, and (8) the integrated processes with bioengineering and wastewater treatments. Recently, the first pilot factory has been costructedin Harbin, China by hydrogen production rate of more than 1200m3/d which located in northeast of China. In photosynthetic hydrogen production filed, study is focused on the fundamentals, engineering application and microbiology. Detailed discussion comes later.
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Leonhardt, Eric C., Jamin F. Swazo, and Ryan F. Cruse. "Using Dairy Cow Derived Biomethane to Fuel the Viking 32 Hybrid Electric Vehicle." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-41659.

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A high performance vehicle—Viking 32—designed and built at the Vehicle Research Institute has been powered with methane refined from a dairy cow anaerobic digester. A student and faculty led team designed and constructed two different refining processes to investigate the feasibility of developing a renewable energy source for transportation in Whatcom County. The paper discusses several key issues surrounding anaerobic digester produced biomethane: the quantity and significance of the energy produced, why transportation fuel is a viable alternative to electrical production in anaerobic digester projects, and the environmental benefits of the anaerobic digester. The design, construction and test results of the two different refining techniques are reviewed as well. The systems are considered for application beyond dairy cow anaerobic digesters. Finally, a renewable transportation concept is proposed for biomethane based transportation in Whatcom County.
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Zhang, Z. J., C. H. Xu, T. Zhu, T. Nozaki, L. L. Zhao, and K. Morita. "Anaerobic Treatment Piggery Wastewater in an Integrated Two-phase Anaerobic Reactor." In 2007 2nd IEEE Conference on Industrial Electronics and Applications. IEEE, 2007. http://dx.doi.org/10.1109/iciea.2007.4318539.

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sheng, Hou Zhe, Huo Man Tang, Dai Chuan Bo, Wang Ben, Fang Yan zhao Xue Da liang, and Li Yi. "ANAEROBIC DIGESTION OF PULP." In International Conference on New Materials and Intelligent Manufacturing (ICNMIM). Volkson Press, 2018. http://dx.doi.org/10.26480/icnmim.01.2018.344.346.

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Kontokostas, Georgios, Ioannis Goulos, and Anastassios Stamatis. "Techno–Economic Evaluation of Recuperated Gas Turbine Cogeneration Cycles Utilizing Animal Manure and Energy Crops for Biogas Fuel." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-25308.

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This work presents the development of an integrated approach, targeting the techno-economic assessment of recuperated cogeneration gas turbine cycles, utilizing anaerobic digestion products of animal manure and energy crops for biogas fuel. The overall approach consists of a series of fundamental modeling theories applicable to; anaerobic digestion and biogas fuel yield, thermodynamic analysis of cogeneration gas turbine cycles, exergetic analysis of anaerobic digestion, and economic modeling of implementation and operation. The developed methodology is applied to the techno-economic analysis of a representative anaerobic digestion plant yielding biogas fuel which is supplied to a recuperated cogeneration gas turbine powerplant. The influence of employed thermodynamic cycle parameters along with the incorporated technology level, on the cycle performance parameters and economic sustainability of integrated digestion–cogeneration powerplant designs, is thoroughly investigated. The obtained results suggest that, the dominant thermodynamic cycle variables that affect the electrical performance of integrated digestion-cogeneration systems, are the gas/air temperatures at the combustor outlet and recuperator air side exit, respectively. It is shown that the profitability of the investment is highly depended on the electrical power output and the feed–in tariff for electrical energy. Optimization of the employed co-generation cycle for maximum electrical power output, is shown to be a crucial element in terms of securing investment sustainability. A general review of the results indicates that, anaerobic treatment of animal manure and energy crops may constitute a sustainable investment, primarily for cases that substantial volumes of substrates are available in order to secure biogas yield and stable operation of the AD–gas turbine power plant.
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Keleman, Michael P. "Economics of Wastewater Treatment Codigestion." In ASME 2010 4th International Conference on Energy Sustainability. ASMEDC, 2010. http://dx.doi.org/10.1115/es2010-90397.

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Wastewater treatment is the method by which sewage of both residential and industrial sources is processed to promote public health and reduce environmental impacts on receiving waters. This physical and biological process generates sludge, which after being treated to reduce pathogens, is referred to as biosolids. In the US there are over 16,000 wastewater treatment plants (WWTP), and every year they produce approximately 7 million tons of biosolids according to the EPA.1 These biosolids are handled differently depending upon local conditions, but most are either buried in landfills, land applied for agriculture or incinerated. Reducing the volume of biosolids produced by each facility is desirable for improving operational efficiency since lower volumes are easier to manage and cheaper to handle and dispose. Most facilities utilize either aerobic digestion to process sludge into biosolids, but larger facilities use anaerobic digestion because this process reduces the overall volume of solids left for management. Anaerobic digestion is more complex and capital intensive, so typically only those facilities treating flows higher than 5 million gallons per day (MGD) use anaerobic digestion. Given current economic conditions and rising energy costs, however, anaerobic digestion is becoming more attractive to utility managers as they attempt to offset energy costs. The anaerobic process produces methane gas. Also called biogas, methane can be utilized not only to fire boilers for heating digesters and nearby buildings, but also to fuel internal combustion engines, microturbines or fuel cells to generate power for plant processes such as blowers in the aeration system. There is also the potential for WWTPs to obtain carbon credits for utilizing renewable energy, especially in those states with renewable portfolio standards. Because anaerobic digestion has limited application in the US, this study evaluated economic viability at plants with design flows less than 5 MGD by incorporating codigestion of food waste to improve the production of biogas for use as energy to reduce operational costs and recover capital costs.
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Spencer L. Mann, Conly L. Hansen, and Carl S. Hansen. "Anaerobic Digestion and Bio-gas." In 2004, Ottawa, Canada August 1 - 4, 2004. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2004. http://dx.doi.org/10.13031/2013.16793.

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Oren, Aharon, and Roland S. Oremland. "Diversity of anaerobic halophilic microorganisms." In International Symposium on Optical Science and Technology, edited by Richard B. Hoover. SPIE, 2000. http://dx.doi.org/10.1117/12.411614.

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Reports on the topic "Anaerob"

1

Rivard, C. J., and D. R. Boone. The anaerobic digestion process. Office of Scientific and Technical Information (OSTI), January 1996. http://dx.doi.org/10.2172/530632.

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Frazer, A. C. (Anaerobic O-demethylation of phenylmethylethers). Office of Scientific and Technical Information (OSTI), January 1990. http://dx.doi.org/10.2172/5077682.

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Wellinger, A. Economic viability of anaerobic digestion. Office of Scientific and Technical Information (OSTI), January 1996. http://dx.doi.org/10.2172/530638.

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Mosey, F. E. Environmental impacts of anaerobic digestion and the use of anaerobic residues as soil amendment. Office of Scientific and Technical Information (OSTI), January 1996. http://dx.doi.org/10.2172/530637.

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Wiegel, J. Hemicellulases from anaerobic thermophiles. Progress report. Office of Scientific and Technical Information (OSTI), May 1994. http://dx.doi.org/10.2172/88584.

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Jain, M. K., R. Narayan, and O. Han. Anaerobic bioprocessing of low-rank coals. Office of Scientific and Technical Information (OSTI), April 1992. http://dx.doi.org/10.2172/5100486.

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Jain, M., R. Narayan, and O. Han. Anaerobic bioprocessing of low rank coals. Office of Scientific and Technical Information (OSTI), January 1991. http://dx.doi.org/10.2172/7013870.

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Jain, M. K., R. Narayan, and O. Han. Anaerobic bioprocessing of low-rank coals. Office of Scientific and Technical Information (OSTI), July 1992. http://dx.doi.org/10.2172/7008193.

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Jain, M. K., R. Narayan, and O. Han. Anaerobic processing of low-rank coals. Office of Scientific and Technical Information (OSTI), January 1992. http://dx.doi.org/10.2172/6971632.

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Jain, M. K., R. Narayan, and O. Han. Anaerobic bioprocessing of low rank coals. Office of Scientific and Technical Information (OSTI), January 1991. http://dx.doi.org/10.2172/6128313.

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