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Journal articles on the topic 'Adsorbeur'

Author: Grafiati

Published: 8 June 2024

Last updated: 31 July 2025

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1

Agustiani, Tia, Asep Saefumillah, and Hanies Ambarsari. "Studi Pemanfaatan Limbah Biomassa sebagai Raw Material Adsorben SiC dalam Penurunan Konsentrasi Amonia sebagai Parameter Bau dalam Air Limbah." Jurnal Teknologi Lingkungan 22, no. 2 (2021): 190–98. http://dx.doi.org/10.29122/jtl.v22i2.4838.

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ABSTRACT Biomass as raw material is one solution that can be developed in the management of agricultural, plantation, and industrial waste. The utilization of biomass-derived from waste can help reduce pollution and environmental pollution. This research was conducted to make Silicon Carbide (SiC) adsorbent from wood biomass using Sengon sawdust as a source of carbon and non-wood biomass, namely coconut husk, as a source of silica. SiC adsorbent is applied for ammonium adsorption, which has implications on reducing ammonia gas from wastewater, reducing odor. The research methods included isola

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2

Rybarchuk, O. V., V. I. Dudarev, and G. N. Dudareva. "Adsorptive extraction of chromium (VI) ions from corrosive aqueous solutions." Proceedings of Universities. Applied Chemistry and Biotechnology 11, no. 1 (2021): 159–64. http://dx.doi.org/10.21285/2227-2925-2021-11-1-159-164.

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Chromium is one of the most effective metals used for protection and decorative coating of various products. However, chrome plating typically occurs in a strongly acid medium, thus involving the formation of dangerous and corrosive solutions. In this article, we investigate the possibility of removing chromium from such solutions using carbon adsorbents, which allow for almost complete extraction of the metal from production solutions up to a residual content of no more than 0.05 mg/dm3. A significant advantage of carbon adsorbents is their ability to extract chromium (VI) ions without chromi

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Titova, Liubov Mikhailovna, and Diana Zamerovna Naurzgalieva. "Improving the design of devices with random packing due to the uniform distribution of the gas flow." Oil and gas technologies and environmental safety 2023, no. 4 (2023): 540–61. http://dx.doi.org/10.24143/1812-9498-2023-4-54-61.

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The modern technical level of solving the problem of efficient operation of adsorbers due to the uniform distri-bution of gas inside the apparatus is considered in detail and ways to improve the adsorbers are proposed. The disadvantages of modern designs of adsorbers and the areas of their use are noted. A brief critical analysis of the designs of devices for uniform loading of adsorbent is given. Based on the analysis and experimental studies, the design of the apparatus has been developed, which ensures a uniform distribution of gas flows inside the apparatus. The objective of the experiment

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4

Al-Hemiri, Adil A., Mohammed A. Atiya, and Farkad A. Lattieff. "Study of Dynamic Sorption in Adsorption Refrigeration Cycle." Journal of Engineering 20, no. 07 (2023): 158–73. http://dx.doi.org/10.31026/j.eng.2014.07.11.

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This paper shows the characteristics of temperature and adsorbed (water vapor) mass rate distribution in the adsorber unit which is the key part to any adsorption refrigeration system. The temperature profiles of adsorption/desorption phases (Dynamic Sorption) are measured experimentally under the operating conditions of 90oC hot water temperature, 30oC cooling water temperature, 35oC adsorption temperature and cycle time of 40 min. Based on the temperature profiles, The mass transfer equations for the annulus adsorbent bed are solved to obtain the distribution of adsorption velocity and adsor

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5

Strizhenov, Evgeny M., Sergey S. Chugaev, Ilya E. Men’shchikov, Andrey V. Shkolin, and Anatoly A. Zherdev. "Heat and Mass Transfer in an Adsorbed Natural Gas Storage System Filled with Monolithic Carbon Adsorbent during Circulating Gas Charging." Nanomaterials 11, no. 12 (2021): 3274. http://dx.doi.org/10.3390/nano11123274.

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Adsorbed natural gas (ANG) technology is a promising alternative to traditional compressed (CNG) and liquefied (LNG) natural gas systems. Nevertheless, the energy efficiency and storage capacity of an ANG system strongly depends on the thermal management of its inner volume because of significant heat effects occurring during adsorption/desorption processes. In the present work, a prototype of a circulating charging system for an ANG storage tank filled with a monolithic nanoporous carbon adsorbent was studied experimentally under isobaric conditions (0.5–3.5 MPa) at a constant volumetric flow

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6

Nour, A., H. Tazerouti, and Y. Ouragh. "Identification of Parameters W0, n, and D of the Dubinin–Radushkevich Equation." International Journal of Mechanical Engineering Education 31, no. 3 (2003): 245–57. http://dx.doi.org/10.7227/ijmee.31.3.6.

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This paper considers a cooling system for a thermal engine using heat from exhaust gas. This system uses a physical adsorption process of solid—gas (active carbon and ammonia). An adsorber tubular element of real scale is submitted to heat flux by electrical air heating, simulating exhaust gas. Temperatures and adsorbed mass are measured. Desorption and adsorption phenomena are described by the Dubinin—Radushkevich model equation, m = W0ρ( T) exp[– D( TIn( Ps( T)/ P)) n], where W0, n, and D are parameters characterising the adsorbent—adsorbate couple. These three parameters can be identified f

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7

Rokhati, Nur, Aji Prasetyaningrum, Nur ‘Aini Hamada, Adi Lamda Cahyo Utomo, Hery Budiarto Kurniawan, and Imam Husnan Nugroho. "PEMANFAATAN TONGKOL JAGUNG SEBAGAI ADSORBEN LIMBAH LOGAM BERAT." Jurnal Inovasi Teknik Kimia 6, no. 2 (2021): 89. http://dx.doi.org/10.31942/inteka.v6i2.5508.

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Logam berat adalah istilah untuk logam-logam seperti Cd, Cr, Cu, Hg, Ni, Pb, dan Zn yang sering berhubungan dengan polusi dan toksisitas. Adsorpsi merupakan metode yang paling sering digunakan untuk menghilangkan ion logam. Tongkol jagung berpotensi menjadi adsorben karena kadar selulosanya yang tinggi. Penelitian ini bertujuan untuk mengkaji performa tongkol jagung sebagai adsorben ion Cr(VI) dan Cd(II). Penelitian dimulai dengan perlakuan awal adsorben dan dilanjutkan dengan proses adsorbsi. Kadar logam berat dihitung dengan metode spektrofotometri. Nilai efisiensi penyerapan Cd(II) meningka

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8

Irdhawati, Irdhawati, Alling Andini, and Made Arsa. "DAYA SERAP KULIT KACANG TANAH TERAKTIVASI ASAM BASA DALAM MENYERAP ION FOSFAT SECARA BATH DENGAN METODE BATH." Jurnal Kimia Riset 1, no. 1 (2016): 52. http://dx.doi.org/10.20473/jkr.v1i1.2443.

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AbstrakKulit kacang tanah digunakan sebagai adsorben untuk menyerap ion fosfat dalam larutan. Sebelum digunakan sebagai adsorben, kulit kacang tanah dicuci, dikeringkan, dihaluskan menggunakan blender dan diayak dengan ukuran partikel ≤ 100 mesh. Serbuk halus diaktifkan dengan asam (H2SO4) dan basa (NaOH) pada berbagai konsentrasi. Selanjutnya, adsorben dengan dan tanpa aktivasi digunakan untuk menentukan kadar fosfat yang terserap secara optimum. Parameter adsorpsi yang digunakan adalah waktu kontak dan kapasitas adsorpsi. Kapasitas adsorpsi diukur dengan mereaksikan ion fosfat dengan adsorbe

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9

Amne, Dinda Prihatini Fitri, Hery Gunawan Togatorop, Putri Sintiani, and Lisnawaty Simatupang. "Penjernihan Minyak Jelantah menggunakan Adsorben Kulit Durian (Durio zibethinus) Teraktivasi Kalium Hidroksida." Jurnal Sains dan Terapan Kimia 14, no. 1 (2020): 29. http://dx.doi.org/10.20527/jstk.v14i1.6626.

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Minyak jelantah merupakan sisa penggunaan bahan pangan, jika di konsumsi akan berbahaya bagi kesehatan. Kegiatan penelitian ini bertujuan untuk menjernihkan minyak jelantah menggunakan adsorben kitozenus yaitu dari limbah kulit durian. Metode penelitian secara laboratorium dengan metode fisika dan kimia. Hasil penelitian dilihat dari kualitas minyak jelantah setelah dijernihkan, yaitu dengan mengetahui bilangan iod dan perubahan warna. Proses pembuatan adsorben kitozenus menggunakan limbah kulit durian dengan diaktivasi KOH variasi konsentrasi 25%, 27% dan 30%. Yang sebelumnya adsorben melalui

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Allouache, Nadia, Rachid Bennacer, Salahs Chikh, A. Al Mers, and N. Mimouni. "Modeling of Heat and Mass Transfer in an Annular Adsorber for Solar Cooling Machine: Performance Coefficients." Defect and Diffusion Forum 312-315 (April 2011): 641–46. http://dx.doi.org/10.4028/www.scientific.net/ddf.312-315.641.

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The primary aim of this study is to simulate numerically the heat and mass transfer characteristics in the annular adsorber that is the most important component of the solar cooling machine, and to evaluate the solar and thermal coefficients of performance as an optimisation criterion of the system, for different adsorbent/adsorbate pairs. The porous medium constituted of the adsorbent/adsorbate is contained in the annular space and it is heated by solar energy. A general model equation is used for modeling the transient heat and mass transfer. The adsorption phenomenon is described by using d

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11

Yang, Xiong, Haoyu Wang, Jiangwei Chen, et al. "Two-Dimensional Modeling of Pressure Swing Adsorption (PSA) Oxygen Generation with Radial-Flow Adsorber." Applied Sciences 9, no. 6 (2019): 1153. http://dx.doi.org/10.3390/app9061153.

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Radial flow is an important type of flow direction for large-scale pressure swing adsorption (PSA) oxygen generation systems. In this study, a numerical simulation of a PSA oxygen generation process based on radial-flow adsorbers was performed with two-dimensional CFD modeling. The gas distribution, the maldistribution factor and the pressure difference were comparatively investigated at each flow type of the radial-flow adsorber. Considering the gas adsorption performance, the results indicated that the centripetal π-flow radial adsorber has the best flow characteristics for the PSA process.

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12

Hilbrandt, Inga, Aki Sebastian Ruhl, and Martin Jekel. "Testing monolithic activated carbon adsorbers for in-line removal of organic micropollutants." Water Supply 16, no. 6 (2016): 1693–99. http://dx.doi.org/10.2166/ws.2016.094.

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Anthropogenic organic micropollutants (OMP) occur along the whole urban water cycle including drinking water. Various OMP can be efficiently adsorbed onto activated carbon. In the present study a commercial monolithic adsorber (MA), originally developed for gas treatment, was examined for the removal of OMP from drinking water. As a promising advantage, the adsorber can be introduced into existing pipes without causing substantial pressure losses. The MA was first characterized with scanning electron microscopy and energy dispersive X-ray spectroscopy. Weight loss during incineration at 550 °C

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13

Amran, Fadina, Nur Fatiah Zainuddin, and Muhammad Abbas Ahmad Zaini. "Two-Stage Adsorber Design for Methylene Blue Removal by Coconut Shell Activated Carbon." Malaysian Journal of Fundamental and Applied Sciences 17, no. 6 (2021): 768–75. http://dx.doi.org/10.11113/mjfas.v17n6.2303.

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The present work was aimed at evaluating the performance of two-stage adsorber for methylene blue removal by coconut shell activated carbon in minimizing the adsorbent mass and contact time. The Langmuir constants were used to evaluate the optimum mass, while the pseudo-second-order constants for contact time. Results show that the adsorbent mass can only be minimized by 0.01 % due to the high adsorbent affinity towards methylene blue, while the contact time has been optimized to 12.2 min at the studied conditions. The effect of adsorbent affinity in two-stage adsorber was analyzed to shed som

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14

Satayev, Marat, Abdugani Azimov, Gani Iztleuov, and Lazzat Satayeva. "Modeling the Structure and Diffusion of Porous Layers." Water 16, no. 1 (2024): 172. http://dx.doi.org/10.3390/w16010172.

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The aim of this work is to develop an adsorber with a fixed bed of adsorbent and a mathematical model of the adsorption bed. On the basis of the theory of fractal clusters, an equation for calculating the layer porosity that takes into account the average cluster radius, the fractal dimension of the cluster structure and the anisotropy index of the adsorbent layer is proposed. The adsorption mechanism in the layer was established, and the proportionality coefficients were estimated based on the tetrahedral packing of grains in the layer. Based on the analysis of the movement of the carrier thr

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15

Irabor E. E. I, Okunseri N. A., and Unuigbe C. A. "Adsorption of heavy metals (lead and chromium) by Calliandra surinamensis chaff." GSC Biological and Pharmaceutical Sciences 23, no. 2 (2023): 091–99. http://dx.doi.org/10.30574/gscbps.2023.23.2.0172.

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Adsorption is one of the most effective ways of removing heavy metals such as Cu, Zn, Pb etc from media. This research work investigated the adsorption efficiency of Calliandra surinamensis pod chaff (Powder Puff flower) for the removal of heavy metals from their aqueous solutions using its chaff as the absorbent. C. surinamensis chaff was activated using ZnCl2 solution in water. The activated carbon obtained was characterized in terms of functional groups present in the carbon using FTIR which gave the infrared spectra of the activated carbon of the sample material. The impact of varying adso

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16

Mohammed, Sawsan A. M., Sarmad Foad, and Haider Abbas Shanshool. "TREATMENT OF A HIGH STRENGTH ACIDIC INDUSTRIAL CHEMICAL WASTEWATER USING EXPANDED BED ADSORBER." Journal of Engineering 17, no. 1 (2011): 103–15. http://dx.doi.org/10.31026/j.eng.2011.01.08.

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Treatment of a high strength acidic industrial wastewater was attempted by activated carbonadsorption to evaluate the feasibility of yielding effluents of reusable qualities. The experimentalmethods which were employed in this investigation included batch and column studies. Theformer was used to evaluate the rate and equilibrium of carbon adsorption, while the latter wasused to determine treatment efficiencies and performance characteristics. Fixed bed and expandedbed adsorbers were constructed in the column studies. In this study, the adsorption behavior of acetic acid onto activated carbon

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17

Ugale, Vinayak D., and Amol D. Pitale. "A Review on Working Pair Used in Adsorption Cooling System." International Journal of Air-Conditioning and Refrigeration 23, no. 02 (2015): 1530001. http://dx.doi.org/10.1142/s2010132515300013.

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Adsorption cooling system find its application in refrigeration, air conditioning, chiller, Ice making, etc. It uses thermal energy as driving force. Adsorption systems are environmental friendly (zero global warming potential and ozone depleting potential) and also eliminates use of compressor and minimize vibration problem. So it can be used as substitute for conventional vapor compression refrigeration system or vapor absorption system. The adsorption generally classified in two types as physical adsorption (due to weak van der waal forces) and chemical adsorption (chemical reaction between

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18

Afrianita, Reri, and Yommi Dewilda. "EFISIENSI DAN KAPASITAS PENYERAPAN FLY ASH SEBAGAI ADSORBEN DALAM PENYISIHAN LOGAM TIMBAL (Pb) LIMBAH CAIR INDUSTRI PERCETAKAN DI KOTA PADANG." Jurnal Dampak 10, no. 1 (2013): 1. http://dx.doi.org/10.25077/dampak.10.1.1-10.2013.

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ABSTRAKPenelitian ini bertujuan untuk menentukan kondisi optimum fly ash sebagai adsorben dalam menyisihan logam timbal (Pb). Penelitian adsorpsi dilakukan secara batch dengan menggunakan larutan artifisial Pb dengan variasi diameter adsorben, berat adsorben, waktu kontak dan kecepatan pengadukan. Hasil penelitian diperoleh kondisi optimum untuk setiap variasi parameter adalah diameter adsorben 0,075-0,14 mm, berat adsorben 1 gam, pH adsorbat 4, waktu kontak 60 menit, dan kecepatan pengadukan 120 rpm. Dapat disimpulkan makin kecil adsorben, maka semakin luas permukaan aktif pada adsorben serta

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Irabor, E. E. I., N. A. Okunseri, and C. A. Unuigbe. "Adsorption of heavy metals (lead and chromium) by Calliandra surinamensis chaff." GSC Biological and Pharmaceutical Sciences 23, no. 2 (2023): 091–99. https://doi.org/10.5281/zenodo.8041340.

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Adsorption is one of the most effective ways of removing heavy metals such as Cu, Zn, Pb etc from media. This research work investigated the adsorption efficiency of <em>Calliandra surinamensis</em> pod chaff (Powder Puff flower) for the removal of heavy metals from their aqueous solutions using its chaff as the absorbent. <em>C. surinamensis</em> chaff was activated using ZnCl<sub>2</sub> solution in water. The activated carbon obtained was characterized in terms of functional groups present in the carbon using FTIR which gave the infrared spectra of the activated car

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20

HR, Yuliani, Elizabet Alwina, Isma Ayu Ningsih Putri Zainal, Ida Adriani Idris, Haera Setiadi, and Andi Musfira Adhar. "Methylene Blue Adsorption With KOH Activated Carbon From Kluwak Shell." Jurnal Kimia dan Rekayasa 2, no. 1 (2021): 1–8. http://dx.doi.org/10.31001/jkireka.v2i1.20.

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Kluwak is a plant whose meat is used as the main ingredient in making rawon. The flesh is located in the seed which taken of meat, leaves only the shell that has not been utilized and becomes waste. The use of kluwak shell directly as an adsorbent has not been maximized so that it is carbonized and activated using KOH. This study aims to utilize kluwak shell carbon without activation and KOH activation as adsorbent. Adsorption was carried out on methylene blue adsorption with 5 variations of concentration. Variations in KOH concentrations of 0, 1, 3 and 5 M and concentrations of methylene blue

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Mo, Wei, Shao Jian Ma, Qin Deng, Mei Qun Lin, and Gui Fang Wang. "Experimental Study on the Desorption and Regeneration of a Novel Granular Bentonite Composite Adsorbent." Advanced Materials Research 158 (November 2010): 81–95. http://dx.doi.org/10.4028/www.scientific.net/amr.158.81.

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The desorption and regeneration of a novel granular bentonite composite adsorbent were investigated in this paper. Copper ions were adsorbed onto the composite adsorbent firstly, then the effects of reagent categories, reagent concentration, desorption time, adsorbed copper ion amount, and temperature on the desorption and regeneration of the adsorbent were studied. The results show that the desorption and regeneration of the composite adsorbent adsorbed copper ions can be carried out by acids, alkalis, or salts. The desorption and regeneration efficiency are closely connected with the experim

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Priadi, Cindy Rianti, Anita Anita, Putri Nilam Sari, and Setyo Sarwanto Moersidik. "ADSORPSI LOGAM SENG (Zn) DAN TIMBAL (Pb) PADA LIMBAH CAIR INDUSTRI KERAMIK OLEH TANAH LIAT." Reaktor 15, no. 1 (2014): 10. http://dx.doi.org/10.14710/reaktor.15.1.10-19.

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ADSORPTION OF ZINC AND LEAD FROM CERAMIC WASTEWATER USING CLAY. Ceramic industry generates glaze wastewater and clay waste. Glaze wastewater contains heavy metal from ceramic painting process which can potentially cause severe pollution problem. Glaze wastewater from PT.X typically contains Cd (0.013 mg/L); Cu (0.033 mg/L); Pb (1.20 mg/L); and Zn (7.00 mg/L). Clay waste used as adsorbent to reduce heavy metal amount in glaze wastewater. The present study investigates in bench scale and uses batch adsorption method to determine effective adsorbent amount and contact time in removing heavy metal

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Piskovatska, Veronika, Alexander Navarrete Santos, Katrin Kalies, et al. "Proteins Adsorbed during Intraoperative Hemoadsorption and Their In Vitro Effects on Endothelium." Healthcare 11, no. 3 (2023): 310. http://dx.doi.org/10.3390/healthcare11030310.

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(1) Background: Hemoadsorption is a method of blood purification with a wide spectrum of indications. Pre-emptive use of hemoadsorption in patients undergoing heart surgery with cardiopulmonary bypass is considered to reduce the risk of postoperative systemic inflammatory response syndrome. The current study aimed to identify the spectrum of blood proteins adsorbed on the polymer matrix of the CytoSorb hemoadsorption system and to investigate their influence on cultured endothelial cells in vitro. (2) Methods: Adsorbers used for intraoperative hemoadsorption were obtained from patients undergo

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24

Yusda, Sari. "PERMURNIAN MINYAK KEMIRI DENGAN ADSORBSI BENTONIT UNTUK MERUBAH KARAKTERISTIK MUTU." JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY 1, no. 2 (2018): 76. http://dx.doi.org/10.31289/jmemme.v1i2.1194.

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<em>Perencanaan alat pemurnian ini merupakan teknologi alternatif untuk memurnikan minyak kemiri dengan memanfaatkan bentonit alam sebagai adsorben. Jenis alat adsorpsi adalah type fixed bed coloums (silinder tegak), dimana kolom dilengkapi unggun adsorben bentonit. Alat pemurnian minyak kemiri ini dirancang dengan kapasitas 5 liter. Bahan rancangan menggunakan pipa PVC setinggi 160 cm, sedangkan untuk media kolom adsorber terbuat dari bahan acrylic 2 inc setinggi 30 cm yang berdiameter rata-rata 50 mm, Bentonit sebagai adsorben diisi kedalam kolom setinggi 80 cm. Adsorber juga dilengkap

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25

J.C., Igwe, Okoronkwo N.E., Nnorom I.C., U. Aghalibe C., I. Obike A., and Uchechukwu F.O. "Removal of Dyes from Synthetic Effluents by Adsorption onto Thiolated boiler fly ash." Chemistry Research Journal 3, no. 6 (2018): 122–34. https://doi.org/10.5281/zenodo.13760550.

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The batch adsorption of methyl orange (MO) and Congo red (CR) from synthetic dye effluents using thiolated boiler fly ash was studied by monitoring the dye concentration using UV- spectrophotometer. The amount of dye adsorbed increased as initial concentration and time was increased. MO was adsorbed more than CR. The sorption process was found to be influenced by initial concentration, time, dye structure and properties and thiolation on the surface chemistry of the adsorbent. The kinetic data were subjected to pseudo-first, pseudo-second order, penetrant transport, fractional attainment to eq

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Sarawanan, Tivya, Sirajo Lawal, and Muhammad Abbas Ahmad Zaini. "Malachite green adsorption by calcium-rich crab shell char via two-stage adsorber design." Ovidius University Annals of Chemistry 33, no. 1 (2022): 36–40. http://dx.doi.org/10.2478/auoc-2022-0005.

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Abstract The present work was aimed to evaluate the optimum mass of crab shell biochar and adsorption contact time in a two-stage adsorber design for malachite green. The model was developed to predict optimum adsorbent mass and adsorption profiles at specified volumes and concentrations of dye effluent. Results show that the adsorbent mass can only be reduced by 1.91 % because of the adsorbent’s strong affinity towards malachite green. Accordingly, the adsorption contact time to achieve equilibrium has dramatically reduced from 150 min to 31 min. In the performance evaluation, the adsorbent m

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A. M. Mohammed, Sawsan, Ibtihage Faisal, and Maha M. Alwan. "Oily Wastewater Treatment Using Expanded Beds of Activated Carbon and Zeolite." Iraqi Journal of Chemical and Petroleum Engineering 12, no. 1 (2011): 1–12. http://dx.doi.org/10.31699/ijcpe.2011.1.1.

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Two types of adsorbents were used to treat oily wastewater, activated carbon and zeolite. The removal efficiencies of these materials were compared to each other. The results showed that activated carbon performed some better properties in removal of oil. The experimental methods which were employed in this investigation included batch and column studies. The former was used to evaluate the rate and equilibrium of carbon and zeolie adsorption, while the latter was used to determine treatment efficiencies and performance characteristics. Expanded bed adsorber was constructed in the column studi

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Bobok, Daniel, and Elemír Kossaczký. "Some Problems of the Laboratory Modelling of Non-Isothermal Adsorption in a Fixed Bed of Adsorbent." Collection of Czechoslovak Chemical Communications 57, no. 6 (1992): 1237–47. http://dx.doi.org/10.1135/cccc19921237.

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The course of non-isothermal adsorption of carbon dioxide from nitrogen stream in laboratory glass adsorbers with a polyurethane insulation, without insulation, with a vacuum silvered jacket and with a vacuum jacket with radiation curtain of aluminium sheet was investigated from the point of view of the possibility to employ a one-dimensional model to describe the adsorption course. The assumptions of the one-dimensional model are fulfilled, from the adsorbers investigated, by the adsorber with vacuum silvered jacket and the adsorber with vacuum jacket with radiation curtain.

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Alwathan, Alwathan, Mustafa Mustafa, and Ramli Thahir. "PENGURANGAN KADAR H2S DARI BIOGAS LIMBAH CAIR RUMAH SAKIT DENGAN METODE ADSORPSI." Konversi 2, no. 1 (2013): 1. http://dx.doi.org/10.20527/k.v2i1.112.

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Biogas sebelum digunakan harus dimurnikan terlebih dahulu dari kandungan asam sulfida (H2S) yang meskipun jumlahnya kecil namun menimbulkan kerugian karena menimbulkan korosi pada logam atau apabila dibakar akan membentuk SO2 atau SO3 yang dikenal dengan SOx yang menyebabkan terjadinya hujan asam. Tujuan dari penelitian ini adalah mencari waktu jenuh adsorben dalam menjerap H2S, mengetahui kemampuan adsorben karbon aktif dalam menyerap dan mencari konstanta persamaan adsorpsi isotherm Freundlich pada variasi ukuran karbon aktif yang digunakan dalam menghitung waktu tinggal adsorpsi. Bahan yang

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Gandhi, Khushi. "Adsorption of Phenol and Resorcinol on Parthenium Based Activated Carbon (Pac) in Basal Salt Medium: Equilibrium and Kinetics." Bioscience Biotechnology Research Communications 16, no. 2 (2023): 84–90. http://dx.doi.org/10.21786/bbrc/16.2.4.

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The adsorption studies were carried out for the removal of Phenol and Resorcinol on Parthenium Based Activated Carbon (PAC) at 301 K and neutral pH ~7. To determine the adsorption equilibrium isotherms, the experiments were performed at the initial concentration of adsorbates with adsorbent doses from 1 g/l to 10 g/l. The experimental data were fitted to six isothermal models, and a nonlinear least square method has been used to estimate model parameters. It has been observed that for adsorption on PAC, Freundlich model was best fitted for the study and data was more closely related for the re

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Hasanah, Ulfa Imroathul, Budi Utami, and Endang Susilowati. "Combination of Corn Waste and Egg Shell as Zn Metal Adsorbent with Batch System." JKPK (Jurnal Kimia dan Pendidikan Kimia) 7, no. 2 (2022): 223. http://dx.doi.org/10.20961/jkpk.v7i2.55440.

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<p>This study aims to determine: the ability of corn cobs and eggshells as Zn metal adsorbents, functional groups of corn cobs and eggshells adsorbent, what isotherm patterns occur in the adsorbent corn cobs and eggshells in adsorbing Zn metal, the optimum ratio and optimum mass of the adsorbent composition of corn cobs and eggshells in Zn metal adsorption, the optimum contact time for adsorbent corn cobs and eggshell in adsorbing Zn metal, the optimum concentration of adsorbate to be adsorbed by corn cobs and eggshell adsorbents. This study used an experimental method in the laboratory.

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Donatus Setyawan Purwo Handoko, R. Yuni Ristanti, and Wuryanti Handayani. "Improvement the Quality of Fish Oil from Waste Flouring Using Adsorbent Zeolit H5-NZA." Formosa Journal of Sustainable Research 2, no. 5 (2023): 1109–22. http://dx.doi.org/10.55927/fjsr.v2i5.4083.

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Flouring process produces fish oil fractions colored dark brown and has a free fatty acid levels are high. This causes the oil fraction can be easily damaged and rancid. This problem can be overcome by purification by means of degumming first and then the fish oil the gross adsorbed using adsorbents natural zeolite (NZ) and H5-NZA with the composition of the adsorbent 10%, 15%, 20%, and 25% (w / w fish oil ) on the adsorption process temperature of 50 ° C, 70 ° C, 90 ° C. Adsorbent characterization results indicate that an increase in acidity and Si / Al ratio of zeolites that have been activa

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Dhidan, Samar K. "REMOVAL OF PHENOLIC COMPUNDS FROM AQUEOUS SOLUTIONS BY ADSOPTION ONTO ACTIVTED CARBONS PREPARED FROM DATE STONES BY CHEMICAL ACTIVATION WITH FeCl3." Journal of Engineering 18, no. 1 (2023): 64–77. http://dx.doi.org/10.31026/j.eng.2012.01.05.

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Activated carbon prepared from date stones by chemical activation with ferric chloride (FAC) was used an adsorbent to remove phenolic compounds such as phenol (Ph) and p-nitro phenol (PNPh) from aqueous solutions. The influence of process variables represented by solution pH value (2-12), adsorbent to adsorbate weight ratio (0.2-1.8), and contact time (30-150 min) on removal percentage and adsorbed amount of Ph and PNPh onto FAC was studied. For PNPh adsorption,( 97.43 %) maximum removal percentage and (48.71 mg/g) adsorbed amount was achieved at (5) solution pH,( 1) adsorbent to adsorbate wei

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Wuntu, Audy D., Harry S. J. Koleangan, and Norrytha L. Wuntu. "Adsorpsi Metilen Biru Pada Hidroksiapatit Dari Tulang Ikan Kakap Merah." JURNAL ILMIAH SAINS 20, no. 1 (2020): 6. http://dx.doi.org/10.35799/jis.20.1.2020.25758.

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Adsorpsi Metilen Biru Pada Hidroksiapatit Dari Tulang Ikan Kakap MerahABSTRAKPenelitian yang bertujuan untuk mempelajari adsorpsi metilen biru pada hidroksiapatit yang diperoleh dari tulang ikan kakap merah (Lutjanus sp.) telah dilakukan. Tulang dikalsinasi dalam tanur pada 600, 800, dan 1000 oC, digerus, dan diayak dengan ayakan 100 mesh. Material tersebut selanjutnya digunakan dalam eksperimen adsorpsi dan data yang diperoleh dianalisis menggunakan model isoterm adsorpsi Langmuir, Freundlich, dan Dubinin-Raduskevich. Hasil penelitian menunjukkan bahwa semakin tinggi suhu kalsinasi, semakin r

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Enenebeaku, Conrad Kenechukwu, Nnaemeka John Okorocha, Uchechi E. Enenebeaku, and Benedict Ikenna Onyeachu. "Adsorption of Methylene Blue Dye onto Bush Cane Bark Powder." International Letters of Chemistry, Physics and Astronomy 76 (October 2017): 12–26. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.76.12.

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The adsorption of methylene blue (MB) dye on bush cane bark powder has been studied by analyzing the effect of contact time, initial dye concentration, adsorbent dose, pH, and temperature on the amount of the MB dye adsorbed per unit mass of the bush cane bark powder adsorbent. An optimum adsorption could be achieved during 80 min contact time but, thereafter, decreased with contact time beyond 80 min. The adsorption of the methylene blue dye increased with increasing the initial dye concentration, temperature and pH. However, the amount of methylene blue adsorbed decreased with increasing the

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Enenebeaku, Conrad Kenechukwu, Nnaemeka John Okorocha, Uchechi E. Enenebeaku, and Benedict Ikenna Onyeachu. "Adsorption of Methylene Blue Dye onto Bush Cane Bark Powder." International Letters of Chemistry, Physics and Astronomy 76 (October 26, 2017): 12–26. http://dx.doi.org/10.56431/p-q37sww.

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The adsorption of methylene blue (MB) dye on bush cane bark powder has been studied by analyzing the effect of contact time, initial dye concentration, adsorbent dose, pH, and temperature on the amount of the MB dye adsorbed per unit mass of the bush cane bark powder adsorbent. An optimum adsorption could be achieved during 80 min contact time but, thereafter, decreased with contact time beyond 80 min. The adsorption of the methylene blue dye increased with increasing the initial dye concentration, temperature and pH. However, the amount of methylene blue adsorbed decreased with increasing the

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Ibnu Hajar, Erna Wati, Reny Suryani Sitorus, Novi Mulianingtias, and Fransiska Jawa Welan. "EFEKTIVITAS ADSORPSI LOGAM Pb2+ DAN Cd2+ MENGGUNAKAN MEDIA ADSORBEN CANGKANG TELUR AYAM." Konversi 5, no. 1 (2018): 1. http://dx.doi.org/10.20527/k.v5i1.4771.

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Abstrak-Cangkang telur merupakan bagian terluar dari telur yang berfungsi memberikan perlindungan bagi komponen-komponen isi telur dari kerusakan secara fisik, kimia maupun mikrobiologis. Setiap cangkang telur memiliki 10.000-20.000 pori-pori sehingga diperkirakan dapat menyerap suatu solute dan dapat digunakan sebagai adsorben untuk menjerap logam seperti Pb2+ dan Cd2+. Tujuan dari penelitian ini untuk mengetahui efektivitas cangkang telur ayam sebagai adsorben dengan variasi waktu kontak yaitu 15, 30, 45 menit dan perbedaan massa adsorben yaitu 3, 6, dan 9 gram, serta untuk mengetahui model

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Bae, Min A., Kyeong Ho Kim, and Jae Ho Baek. "Effect of Inorganic Additives and Sintering Temperature on Adsorbents." Korean Journal of Metals and Materials 60, no. 3 (2022): 244–50. http://dx.doi.org/10.3365/kjmm.2022.60.3.244.

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Magnesium silicate is a porous material with a large specific surface area and is easily adsorbed. In particular, it is widely used commercially because it is very effective for adsorbing Na+, K+ ions and other catalysts. However, if the powder is used as an adsorbent as is, there are disadvantages, in that the adsorbed material is easily lost during the adsorption action and becomes difficult to recover. In this study, magnesium silicate was used as an adsorbent to remove pollutants (CO2) from the atmosphere. In addition, in order to overcome the disadvantages of using a powder adsorbent mate

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Bob Widodi, Suparno, and Wipsar Sunu Brams Dwandaru. "Experimental Study: Avocado Seed Powder as Adsorbent for Fe Metal Ions in Water." JST (Jurnal Sains dan Teknologi) 14, no. 1 (2025): 124–31. https://doi.org/10.23887/jstundiksha.v14i1.87894.

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Heavy metal waste pollution such as iron (Fe) has affected many clean water sources in Indonesia, so alternative solutions are needed to clean them, one of which uses adsorbents from avocado seeds. This study aims to determine the effect of avocado seed powder mass as an adsorbent on Fe metal levels in water and compare the effectiveness of adsorbents activated with HCl and H₂SO₄ solutions. The research method uses an experimental method which includes making adsorbent powder, activation process using HCl and H₂SO₄ solution of 1M concentration, adsorption process, testing with Atomic Absorptio

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Sangandita, Kharisma Resti Kurnia Diah, and Budi Utami. "Effectiveness of Rice Husk and Bagasse Fly Ash as Adsorbent of Cr Metal on Batch System." JKPK (Jurnal Kimia dan Pendidikan Kimia) 4, no. 2 (2019): 85. http://dx.doi.org/10.20961/jkpk.v4i2.29724.

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<p>This study aimed to utilize rice husk and bagasse fly ash as Cr metal adsorbent. In this study, the adsorption used batch system. The steps of research were preparation of materials, activation of materials with HCl and NaOH solutions, characterization test using SEM, FTIR and AAS. Determination of optimum condition of Cr metal adsorption on variation of adsorbent composition, adsorbent mass, adsorbate concentration and isotherm adsorption study. The result showed that the adsorbent of rice husk and bagasse fly ash can be used as adsorbent because there were pores that is based on SEM

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Brandani, Stefano. "The Rigid Adsorbent Lattice Fluid Model: Thermodynamic Consistency and Relationship to the Real Adsorbed Solution Theory." Membranes 12, no. 10 (2022): 1009. http://dx.doi.org/10.3390/membranes12101009.

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The Rigid Adsorbent Lattice Fluid model has been shown to comply with all the requirements for thermodynamic consistency in the case of an adsorbent that does not undergo structural changes. This is achieved by introducing a correction to the reduced density function that multiplies the combinatorial term. A procedure to calculate the predicted adsorbed mixture activity coefficients has been presented that allows the production of excess Gibbs energy plots at a constant reduced grand potential. The predicted nonideality is structurally consistent with the Non-Ideal Adsorbed Solution Theory of

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Rahimli, Fazil, and Nigar Mamedova. "Enhancement of Sulphur Removal Efficiency from Propane-Propylene Fraction (PPF) from Catalytic Cracking Process (CCP) by Adsorption: A Field Study." Grassroots Journal of Natural Resources 8, no. 1 (2025): 431–51. https://doi.org/10.33002/nr2581.6853.080117.

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The removal of sulphur from propane-propylene fraction (PPF) is crucial for enhancing hydrocarbon product quality and meeting environmental standards. This study aimed to investigate the effectiveness of adsorption methods used to remove sulphur-containing compounds from PPF using different adsorbents and recovery methods. The experiment was conducted at the olefin plant of the Ethylene-Polyethylene complex in Sumgait, Azerbaijan, employing a two-stage purification process. Four types of adsorbents (A, B, C, and D) were tested. The first adsorber containing adsorbents A, B, and C removed water

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Zahro, Septi Fatimatus, and Sandyanto Adityosulindro. "Literature Review: Penggunaan Bahan Berbasis Limbah Sebagai Adsorben untuk Degradasi Zat Warna pada Air Limbah." Jurnal Kesehatan Lingkungan Indonesia 22, no. 3 (2023): 359–68. http://dx.doi.org/10.14710/jkli.22.3.359-368.

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Latar belakang: Penggunaan adsorben bahan limbah dari limbah pertanian, industri maupun bahan alam menjadi alternatif baru dalam pengolahan air limbah yang mengandung zat warna. Limbah ini dapat menyebabkan berbagai masalah kesehatan bagi makhluk hidup mulai dari alergi, cidera permanen, asma, bahkan kanker. Tujuan review artikel ini adalah untuk memberikan informasi tren penelitian penggunaan adsorben dari bahan limbah dalam penyisihan zat warna serta informasi mengenai komposisi bahan, dan pengaplikasiannya sebagai potensi alternatif baru bahan adsorben dalam pengolahan limbah.Metode: Metode

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Ivontianti, Wivina Diah, Syahrul Khairi, Ria Devitasari, and Yusup Yusup. "Pemanfataan Cangkang Keong Susuh Kura (Sulcospira Testudinaria) Sebagai Adsorben Untuk Menyerap Logam Besi (Fe) di Perairan dengan Kajian Variasi Suhu Kalsinasi Adsorben." Jurnal Teknologi Lingkungan Lahan Basah 10, no. 1 (2021): 038–47. https://doi.org/10.26418/jtllb.v10i1.51649.

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This research is the use of snail susuh kura (Sulcospira testiudinaria) as an adsorbent to absorb ferrous metal (Fe2+) by studying the variation calcination temperatures of the adsorbent. The purpose of this study was to determine the characteristics of the adsorbent based on XRD, FTIR and GSA analysis. In this experiment also carried out temperature variations of calcination in 110 ℃ (without calcination), 500 ℃ and 900 ℃ The fixed variables in this study were the adsorbate volume of 100 mL with a concentration of 100 mg / L, stirring speed of 250 rpm and adsorption time of 30 minutes. Based

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Golubyatnikov, Oleg O., Evgeny I. Akulinin, and Alexey A. Kolomoets. "CFD MODELING OF FLOW IN A STATIONARY ADSORBENT BED FOR PRESSURE SWING ADSORPTION PROCESS OF HYDROGEN PURIFICATION." Bulletin of the Saint Petersburg State Institute of Technology (Technical University) 61 (2022): 92–97. http://dx.doi.org/10.36807/1998-9849-2022-61-87-92-97.

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The paper presents the results of numerical studies of the aerodynamic structure of the flow in a fixed layer of granular adsorbent in the adsorber of a pressure swing adsorption (PSA) unit for synthesis gas separation and hydrogen purification. Сomputational experiments were conducted in COMSOL Multiphysics software using 1-D and 2-D mathematical models to calculate the velocity field in the bulk layer of the 13X adsorbent for the PSA process of hydrogen purification. When assessing the accuracy of calculating the aerodynamic structure of the gas flow in the adsorbent, it was found that the u

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Bariyah, Khoerul, Nuri Andarwulan, and Purwiyatno Hariyadi. "Pengurangan Kadar Digliserida dan Asam Lemak Bebas dalam Minyak Sawit Kasar Menggunakan Adsorben." Agritech 37, no. 1 (2017): 49. http://dx.doi.org/10.22146/agritech.17009.

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Indonesia is the world’s largest crude palm oil (CPO) producer and consumer in 2014. Components that affect the quality of CPO are diglycerides (DAGs) and free fatty acids (FFA). DAGs in palm oil are known as the precursor of 3-MCPD esters, while higher content of FFA could influence the oil stability. The contact of CPO with adsorbent could affect the present of DAG and FFA in CPO. The purpose of this study was to determine the best type of adsorbent in reducing DAGs and FFA in CPO with emphasis on the characteristics of the adsorbent and adsorbate. This study was carried out by using three d

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Hayati, Gusti Indah, Bunga Pertiwi, and Yuli Ristianingsih. "PENGARUH VARIASI KONSENTRASI ADSORBEN BIJI TREMBESI TERHADAP PENURUNAN KADAR LOGAM KROMIUM (Cr) TOTAL PADA LIMBAH INDUSTRI SASIRANGAN." Konversi 5, no. 2 (2018): 1. http://dx.doi.org/10.20527/k.v5i2.4760.

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Abstrak- Proses pembuatan kain sasirangan menghasilkan limbah cair yang berasal dari proses pewarnaan dan pencelupan kain. Salah satu polutan yang terkandung pada limbah cair industri sasirangan adalah logam Cr. Reduksi logam Cr total limbah cair industri sasirangan dilakukan dengan proses adsorpsi menggunakan adsorben dari biji Trembesi. Tujuan penelitian ini untuk mengetahui pengaruh konsentrasi adsorben 1, 2, 3 dan 4% w/v terhadap proses reduksi logam Cr total industri sasirangan. Variasi konsentrasi adsorben yang digunakan sebesar 1 g/100 mL, 2 g/100 mL, 3 g/100 mL dan 4 g/100 mL limbah sa

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Yuliana, Y., Veronica J. S, and Bambang Gunantara. "Penggunaan adsorben untuk mengurangi kadar free fatty acid, peroxide value dan warna minyak goreng bekas." Jurnal Teknik Kimia Indonesia 4, no. 2 (2018): 212. http://dx.doi.org/10.5614/jtki.2005.4.2.4.

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This research was carried out to examine the ability of calcium silicate, magnesium silicate, activated carbon and bentonite as adsorbent to decrease the FFA content, PV and dark color intensitv of used frying oil. Adsorbent treatment may improve the quality and extend the frying life of used frying oil. A mixture of used frying oil and certain adsorbent were agitated at constant temperature 150oC for 1 hour Four adsorbents were used at various concentrations. Subsequently, the oil was filtered by vacuum filtration, The changes in FFA content, PV and color intensity were observed. Calcium sili

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Bocarov-Stancic, A., M. Adamovic, N. Salma, M. Bodroza-Solarov, J. Vuckovic, and V. Pantic. "In vitro efficacy of mycotoxins adsorption by natural mineral adsorbents." Biotehnologija u stocarstvu 27, no. 3 (2011): 1241–51. http://dx.doi.org/10.2298/bah1103241b.

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The paper describes in vitro model for evaluation of natural mineral adsorbents ability to adsorb mycotoxins. Bentonite, diatomite and zeolite were prepared in the Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade. A total of six mycotoxins: aflatoxin B1 (AFL), ochratoxin A (OTA), deoxynivalenol (DON), zearalenone (ZON), diacetoxyscirpenol (DAS) and T-2 toxin were tested in vitro. For adsorption experiments crude extracts of mycotoxins, produced in the Department of Microbiology of Bio-ecological Center in Zrenjanin, were used. The ability for binding mycotoxins was

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García-Hernández, Elias, Carlos Gilberto Aguilar-Madera, Erik Cesar Herrera-Hernández, et al. "3D Modeling of the Adsorption Rate of Pyridine on Activated Carbon Cloth in a Stirred Tank under Turbulent Conditions." Processes 10, no. 4 (2022): 735. http://dx.doi.org/10.3390/pr10040735.

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The experimental and numerical analysis of pyridine adsorption onto activated carbon cloth in a stirred batch adsorber under transition and turbulent regime is presented in this work. Three-dimensional numerical modeling of the adsorption process was implemented for the identification of local velocity, local concentration, and concentration gradients inside the adsorber. This represents a costly computational effort in comparison with conventional batch adsorption models, as for instance the Langmuir kinetic model. Both types of modeling yield comparable results, but the advantage of the 3D m

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