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Dissertations / Theses on the topic 'Pollutant inorganic'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Saunders, Eleanor Margaret. "The effect of mineral nitrogen on ectomycorrhizas with special reference to nitrogen deposition." Thesis, University of Sheffield, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299547.

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2

Green, Janet Amanda. "The influence of wooded shelterbelts on the deposition of vehicle generated inorganic pollutants at Shakerley Mere, Cheshire." Thesis, Manchester Metropolitan University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337847.

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3

Peiris, Thelge Manindu Nirasha. "Development and characterization of silica and titania based nanostructured materials for the removal of indoor and outdoor air pollutants." Diss., Kansas State University, 2012. http://hdl.handle.net/2097/14891.

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Doctor of Philosophy<br>Department of Chemistry<br>Kenneth J. Klabunde<br>Solar energy driven catalytic systems have gained popularity in environmental remediation recently. Various photocatalytic systems have been reported in this regard and most of the photocatalysts are based on well-known semiconducting material, Titanium Dioxide, while some are based on other materials such as Silicon Dioxide and various Zeolites. However, in titania based photocatalysts, titania is actively involved in the catalytic mechanism by absorbing light and generating exitons. Because of this vast popularity of t

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4

Allus, Mahmoud A. "Thallium and trace metals as pollutants : chemometric studies." Thesis, University of Bristol, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294095.

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5

Lindberg, Anna-Lena. "Factors influencing the metabolism of inorganic arsenic in humans /." Stockholm, 2007. http://diss.kib.ki.se/2007/978-91-7357-145-6/.

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6

Colon, i. Bosch Mireia. "Analytical strategies based on inductively coupled plasma sprectroscopy (ICP) and diffusive gradients in thin fims (DGT) techniques for the assessment of environmental pollution indicators." Doctoral thesis, Universitat de Girona, 2011. http://hdl.handle.net/10803/84050.

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In this thesis, simple methods to determine sulfide at low levels (µg L-1) in aqueous samples and sediments by water free hydrogen sulfide vapor generation using a commercially available vapor generation accessory have been developed. The hydrogen sulfide is then introduced in the ICP-QMS, equipped with an octopole collision/reaction cell which is vented with hydrogen and helium gases, or in the ICP-AES where the optical path between the plasma and the monochromator is purged with nitrogen. Moreover some studies have been conducted for the determination of arsenic by ICP-MS in natural waters w

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7

Cowie, Claire. "The use of rhizogenic 'Agrobacterium' strains to improve phytoremediation of inorganic and organic pollutants." Thesis, University of Newcastle Upon Tyne, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.436167.

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8

McClain, Michael Eugene. "Terrestrial controls on the biogeochemistry of dissolved organic matter and inorganic nitrogen in streams of the central Amazon Basin, Brazil /." Thesis, Connect to this title online; UW restricted, 1996. http://hdl.handle.net/1773/11038.

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9

Mapukata, Sivuyisiwe. "Photocatalytic treatment of organic and inorganic water pollutants using zinc phthalocyanine-cobalt ferrite magnetic nanoparticle conjugates." Thesis, Rhodes University, 2019. http://hdl.handle.net/10962/67603.

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This work explores the synthesis and photophysicochemical properties of zinc phthalocyanines when conjugated to cobalt ferrite magnetic nanoparticles. Phthalocyanines with amine and carboxylic acid functional groups were synthesised so as to covalently link them via amide bonds to cobalt ferrite magnetic nanoparticles with carboxylic acid and amine groups, respectively. Spectroscopic and microscopic studies confirmed the formation and purity of the phthalocyanine-cobalt ferrite magnetic nanoparticle conjugates which exhibited enhanced triplet and singlet quantum yields compared to the phthaloc

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10

Bode-Aluko, Chris Ademola. "Functionalisation of polymer nanofibres and track-etched membrane removal of organic and and inorganic pollutants from water." University of the Western Cape, 2017. http://hdl.handle.net/11394/5773.

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Philosophiae Doctor - PhD<br>Organic and inorganic pollutants are two broad classes of pollutants in the environment with their main sources from waste waters that are indiscriminately dumped from chemical related industries. Among the organic pollutants are dyes that come as effluents from the textile industries. Toxic metals are the main inorganic pollutants with their sources from industries such as mining, electroplating, batteries etc. The presence of both classes of pollutants in the aquatic environment poses a serious threat to aquatic organisms and humans who depend on these wate

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11

Sundberg, Johanna. "Lactational transfer of methylmercury and inorganic mercury and uptake in the offspring /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5413-1.pdf.

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12

Metzger, Lia Kimiko. "Inorganic Heavy Metals as Environmental Pollution Indicators in Rio Baru, Costa Rica." Scholarship @ Claremont, 2015. http://scholarship.claremont.edu/scripps_theses/562.

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Pollution from industrial sources, such as leather tanneries, jewelry factories, car batteries, and construction refuse, has been linked to increased concentrations of toxic heavy metals in rivers in Costa Rica. This study focused on the concentrations of arsenic, cadmium, chromium, copper, nickel, and lead in sediment and water in Rio Baru, Costa Rica, which has not been previously studied. The concentrations in Rio Baru were compared to two controls and the Environmental Protection Agency toxicity limits to determine pollution levels. Inductively coupled plasma mass spectrometry was utilized

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13

Couvidat, Julien. "Gestion d'un sédiment de dragage marin contaminé : Caractérisation de la réactivité biogéochimique, valorisation en mortier et évaluation environnementale." Thesis, Lyon, INSA, 2015. http://www.theses.fr/2015ISAL0091/document.

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Le dragage de sédiments marins produit des millions de tonnes de déchets chaque année qu’il faut gérer durablement. Les deux sédiments étudiés, conservés dans des conditions anoxiques sous eau (sédiment brut), et oxiques soumis à l’altération naturelle (sédiment vieilli), présentent une contamination élevée en cuivre, plomb et zinc prépondérante surtout dans les fractions fines. Des phases réactives ont été identifiées telles que sulfures et matière organique, auxquelles le cuivre et le zinc sont en grande partie liés. Un dispositif expérimental innovant couplant un test de consommation d’oxyg

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14

Eigenhuis, Bernhard. "Developing the soil pollution potential as an environmental management cost estimation index for washing inorganic pollutants from soils / B. Eigenhuis." Thesis, North-West University, 2004. http://hdl.handle.net/10394/283.

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This study investigated the concept of the Soil Pollution Potential (SPP), a concept analogous to the Global Warming Potential used to compare various chemicals during Life Cycle Analysis of industrial projects. The objective of the study was to identify a reference soil pollution scenario and a reference inorganic soil pollutant that provide the basis for calculating Soil Pollution Potentials for a wide range of soil pollution scenarios. The reference inorganic soil pollutant has been identified as Aluminium and a reference soil pollution scenario is also described in this dissertation, provi

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15

SANTOS, JACINETE L. dos. "Trocadores ionicos inorganicos a base de manganes e potassio para recuperacao e remocao de metais poluentes de efluentes aquosos." reponame:Repositório Institucional do IPEN, 2001. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10956.

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Made available in DSpace on 2014-10-09T12:46:03Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T13:59:45Z (GMT). No. of bitstreams: 1 07536.pdf: 5663211 bytes, checksum: 0b68204c0f6a1c7f09e9308ae2274961 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Dissertacao (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP<br>FAPESP:97/07964-0

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Mubarak, Dalia Mohamed Fahmy [Verfasser], and Torsten [Akademischer Betreuer] Müller. "Removal of organic and inorganic pollutants from aqueous solutions by organically modified clayey sediments / Dalia Mohamed Fahmy Mubarak. Betreuer: Torsten Müller." Hohenheim : Kommunikations-, Informations- und Medienzentrum, 2012. http://d-nb.info/102896837X/34.

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Mubarak, Dalia [Verfasser], and Torsten [Akademischer Betreuer] Müller. "Removal of organic and inorganic pollutants from aqueous solutions by organically modified clayey sediments / Dalia Mohamed Fahmy Mubarak. Betreuer: Torsten Müller." Hohenheim : Kommunikations-, Informations- und Medienzentrum, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:100-opus-7795.

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18

Lai, Joshua. "Synthesis and characterization of Prussian red derived microparticles for the heterogeneous photo-fenton oxidation of azo-type textile dyes as pollutants." HKBU Institutional Repository, 2020. https://repository.hkbu.edu.hk/etd_oa/886.

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Inorganic colloidal synthesis, without a doubt, lies at the foundation of many contemporary areas of nanoscience and nanotechnology. At the advent of the 21st century, much progress has been made in the size, shape / morphological control and surface engineering of metal oxides resulting in a diverse library of macroscopic crystal architectures with well-defined surface properties. In this thesis, we start by introducing the self-assembly of the iron(oxy-, hydro-)xide while briefly reviewing some fundamental concepts of solid-state chemistry. Specific information on the family of iron oxide an

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19

Ojemaye, Cecilia Yejide. "Identification and quantification of chemicals of emerging concern (persistence organic and inorganic pollutants) in some selected marine environments of Cape Town, South Africa." University of Western Cape, 2020. http://hdl.handle.net/11394/7697.

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Philosophiae Doctor - PhD<br>The increasing evidence of chemicals of emerging concern (CECs) in water bodies is causing major concern around the world because of their toxicological effects upon humans and aquatic organisms. The release of wastewater to the aquatic environment is most likely to introduce some trace levels of organic contaminants, some of which may be toxic, carcinogenic, or endocrine disruptors, as well as, persistent in the environment. These compounds are often persistent but not regularly monitored because they are mostly still excluded from environmental legislation.

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Ojemaye, Cecilia Yejide. "Identification and quantification of chemicals of emerging concern (persistent organic and inorganic pollutants) in some selected marine environments of cape town, South Africa." University of the Western Cape, 2020. http://hdl.handle.net/11394/7877.

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Philosophiae Doctor - PhD<br>The increasing evidence of chemicals of emerging concern (CECs) in water bodies is causing major concern around the world because of their toxicological effects upon humans and aquatic organisms. The release of wastewater to the aquatic environment is most likely to introduce some trace levels of organic contaminants, some of which may be toxic, carcinogenic, or endocrine disruptors, as well as, persistent in the environment. These compounds are often persistent but not regularly monitored because they are mostly still excluded from environmental legislation. Their

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21

Giri, Atanu. "Development of Photocatalysts Supported on Graphitic Carbon Nitride for the Degradation of Organic Water Pollutants." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5692.

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Graphitic carbon nitride (g-C3N4) heterojunction composites with the semiconducting metal oxides, CeO2, ZnO and TiO2 are prepared in situ by co-calcination of the precursor materials or by a solvothermal method. The structural, morphological and the optical properties of the prepared materials are studied using various microscopy and spectroscopy techniques. The synthesized composite materials, CeO2/g-C3N4, ZnO/g-C3N4 and TiO2/g-C3N4 are more efficient in the photocatalytic degradation of the water pollutants indigo carmine (IC) and atrazine than the pure metal oxide, g-C3N4, or their physical

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22

Carravieri, Alice. "Seabirds as bioindicators of Southern Ocean ecosystems : concentrations of inorganic and organic contaminants, ecological explanation and critical evaluation." Thesis, La Rochelle, 2014. http://www.theses.fr/2014LAROS026/document.

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L’océan Austral est soumis à la redistribution globale des contaminants par les voies atmosphérique et océanique. Cependant, la contamination des écosystèmes austraux est très peu connue, en particulier dans le secteur Indien. De par leur toxicité, leur mobilité et leur capacité à se bioaccumuler dans les tissus des organismes et à se bioamplifier dans les réseaux trophiques, le mercure (Hg) et les polluants organiques persistants (POPs) comptent parmi les contaminants les plus préoccupants. Du fait de leur position élevée dans les réseaux trophiques, les oiseaux marins sont exposés à de grand

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23

Hannachi, Hassen. "Etudes cinetiques sous conditions atmospheriques simulees des reactions de composes carbonyles avec oh', o::(3), no'::(3) : consequences sur la chimie de basse troposphere." Paris 7, 1986. http://www.theses.fr/1986PA077213.

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24

Vedolin, Marcela Corrêa. "Estudo da distribuição de metais em plásticos no litoral de São Paulo: avaliação da poluição por meio de análise de pellets." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/21/21137/tde-05022015-112027/.

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A matéria prima das indústrias transformadoras de utensílios plásticos são os pellets de plástico, que recebem quantidades significativas de aditivos os quais possuem metais pesados e elementos tóxicos. Devido à perda desses pellets durante os processos de produção e transporte, tais contaminantes são liberados no ambiente. Este estudo investiga as interações entre os metais dissolvidos em pellets coletados em diferentes praias do litoral de São Paulo. Especificamente, o estudo comparou a realização do método em grânulos virgens, ou seja, aqueles obtidos a partir de uma fábrica de moldagem com

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25

Booyens, Paul Lodewyk. "Pollutants associated with mass mortality of Nile crocodiles (Crocodylus niloticus) in the Kruger National Park, South Africa / P.L. Booyens." Thesis, North-West University, 2011. http://hdl.handle.net/10394/5564.

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The first of a series of mass mortalities of Nile crocodiles in the Olifants and Letaba rivers in the Kruger National Park (KNP) was reported in the winter of 2008. The present study investigated the levels and possible effects on eggshell thickness of inorganic elements and organic pollutants in Nile crocodile eggs from these rivers, and comparing them with eggs from a reference crocodile farm and a reference dam inside the KNP. The egg contents were analyzed for chlorinated organic compounds and brominated flame retardants. Eggshells and egg contents were analyzed for inorganic elements. The

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26

Liu, Wenjun. "High strength industrial wastewater treatment using membrane bioreactors : a novel extractive membrane bioreactor for treating bio-refractory organic pollutants in the presence of high concentrations of inorganics: application to acidic effluents." Thesis, University of Bath, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369997.

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27

Theóphilo, Carolina Yume Sawamura. "Análise de elementos potencialmente tóxicos em material biológico da Ilha da Trindade, Brasil." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/21/21137/tde-26112014-161310/.

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A Ilha da Trindade está localizada a aproximadamente 1150 km da costa de Vitória-ES, é uma das ilhas oceânicas brasileiras e está sob o domínio da Marinha do Brasil. Desde o início de sua ocupação sofreu algumas influências antrópicas, como a derrubada de árvores e a introdução de animais (porcos e cabras). Os metais oriundos da costa ou de navios que passam pela região, estão em destaque entre os contaminantes ambientais que podem alterar o ecossistema da ilha. Dessa forma, o objetivo desse trabalho foi quantificar Al, As, Cd, Cu, Fe, Mn, Ni, Pb, Se, Zn e Hg em 300 amostras, compostas por mús

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28

Chéret, Véronique. "La sapiniere du luchonnais (pyrenees hautes-garonnaises) : etude phytoecologique, recherches sur le phenomene de deperissement forestier." Toulouse 3, 1987. http://www.theses.fr/1987TOU30042.

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Un phenomene de deperissement du sapin (abies alba m. ) se developpe depuis plusieurs annees dans le luchonnais. Apres un inventaire des symptomes et une cartographie des secteurs forestiers atteints, des travaux ont ete menes dans differents domaines afin d'expliciter ce phenomene. Il ressort que le deperissement semble du a une synergie de facteurs contribuant a affaiblir progressivement la sapiniere en provoquant directement (pollutions acides, faible fertilite des sols) ou indirectement (secheresse, competition) des troubles nutritionnels

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29

Friedrich, Nadine. "Untersuchungen zum Transfer von anorganischen und organischen Schadstoffen aus dotiertem Substrat in Gemüsepflanzen (Tomaten, Paprika)." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2011. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-73396.

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In der vorliegenden Arbeit wurde mit Hilfe von Gefäßversuchen der Transfer von ausgewählten organischen (m-Kresol, Simazin, Lindan, Anthracen, Galaxolid) und anorganischen Umweltschadstoffen (As, Cd, Pb, Cr, Zn, Ni) aus dotiertem Substrat in Nutzpflanzen (Tomaten, Paprika) untersucht. Zum besseren Verständnis des Schadstofftransfers der organischen Verbindungen und als Möglichkeit einer kosten- und zeitsparenden Alternative zu den herkömmlichen Untersuchungsverfahren, wurden ergänzend in vivo – Experimente durchgeführt. Weitere Schwerpunkte der Arbeit waren Untersuchungen zur Schadstoffaufnahm

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30

Bode, Ralf. "Auslaugung anorganischer Schadstoffe aus Abfall- und Altlastmaterialien." Doctoral thesis, [S.l.] : [s.n.], 2005. http://hdl.handle.net/11858/00-1735-0000-0006-B310-C.

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31

"Electrospun Polymeric Nanocomposites for Aqueous Inorganic and Organic Pollutant Removal." Doctoral diss., 2018. http://hdl.handle.net/2286/R.I.50495.

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abstract: Electrospinning is a means of fabricating micron-scale diameter fiber networks with enmeshed nanomaterials. Polymeric nanocomposites for water treatment require the manipulation of fiber morphology to expose nanomaterial surface area while anchoring the nanomaterials and maintaining fiber integrity; that is the overarching goal of this dissertation. The first investigation studied the effect of metal oxide nanomaterial loadings on electrospinning process parameters such as critical voltage, viscosity, fiber diameter, and nanomaterial distribution. Increases in nanomaterial loading be

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32

Tesfai, Fitsum Kidane. "Determination of the inorganic pollutants in South African sewage sludges." Thesis, 2004. http://hdl.handle.net/10413/2129.

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A total of 78 sludge samples originating from 69 sewage works of South Africa were used in this investigation. Seven of the sludge samples were liquid and the rest were solid. Moisture content, pH and mineral ion determination using ICP-OES were carried out. The methods used to digest the samples were EPA 3050B and 301OA for solid sludge and effluent (liquid sludge) respectively. The moisture content determination showed that fresh wet sludge was composed of water between 40 to 90 %. The minimum moisture content was found to be 2.70 % while the maximum was 88.50 % with a mean value of41 %. The

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LO, SHIH-HSUAN, and 羅世軒. "Applications of Iron carbon to abate Organic/inorganic Pollutants in Aqueous Solution." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/443ard.

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碩士<br>國立宜蘭大學<br>環境工程學系碩士班<br>106<br>In this study, the granulation method involving high-temperature sintering of ferro-carbon is used to investigate the feasibility of its degradation and adsorption, and the effects of subjecting it to aeration. The method involves uniformly mixing appropriate proportions of iron powder, activated carbon, calcium stearate, and glass powder before granulation in a compressor and sintering via aeration using high-temperature nitrogen. The ferro-carbon is applied to the adsorption of phosphate in water and tested using isothermal and dynamic experiments, and the

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34

Ndlovu, Thabile. "Electrochemical detection of organic and inorganic water pollutants using recompressed exfoliated graphite electrodes." Thesis, 2012. http://hdl.handle.net/10210/8091.

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Ph.D.<br>This study explored the possible application of a relatively new electrode called exfoliated graphite electrode (EG electrode) in the electroanalysis of organic and inorganic water pollutants. This study also explored the applicability of this electrode in the removal of heavy metal pollutants in water. The EG material was successfully prepared by intercalating bisulphate ions into graphite flakes (>300 μm) followed by thermal shock at 800°C to obtain an exfoliated graphite. After compressing the EG at high pressure, the obtained circular sheets were used to fabricate electrodes. The

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Lin, Fen-horng, and 林奮宏. "The Influence of Some Inorganic Salts on the Treatment of Organic Pollutants by Fenton Method." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/31231284596531838045.

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碩士<br>淡江大學<br>水資源及環境工程所<br>83<br>Organics from landfill leachate are complicated. After decomposition, inorganic salt and organic by-product might both be able to combine with Fe2+ to form chelate or to compete with.OH. That will affect the result of Fenton treatment. Hence, we conduct a study by using simple organics probing into several objectives separately during the process of Fenton treatment such as the impact of organic decomposition while existing the inorganic salt and t

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Simelane, Siphamandla. "Phosphorylated nanoporous β-cyclodextrin polymers: synthesis, characterization and their application in water purification". Thesis, 2012. http://hdl.handle.net/10210/5051.

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M.Sc.<br>This study was carried out to investigate the removal of organic and inorganic pollutants from water using phosphorylated and nonphosphorylated cyclodextrin polymers. The β-cyclodextrin was functionalized using various phosphorylating agents and the derivatives obtained were characterised with Fourier Transform-Infrared (FT-IR), Nuclear Magnetic Resonance (NMR) spectroscopy and mass spectrometry. These derivatives were polymerized using hexamethylene diisocyanate (HMDI) as a cross-linking agent. The polymers were obtained in good yields ranging from 72 % to 93 %. They were characteris

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Ottenstein, Ralf [Verfasser]. "Investigation of the Volga River sediments composition : inorganic pollutants of potential concern / vorgelegt von Ralf Ottenstein." 2005. http://d-nb.info/975980157/34.

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Nuapia, Yannick Belo. "Environmental risk assessment of inorganic and organic pollutants in raw and cooked food in African countries." Thesis, 2016. http://hdl.handle.net/10539/21076.

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A dissertation submitted to the Faculty of Science, University of the Witwatersrand in fulfilment of the requirements for the degree of Master of Science. Johannesburg 2015<br>Exposure to inorganic and organic pollutants residues causes negative effects to human health. They can cause damage to the living organism as well as to the environment. Humans take up these pollutants through skin absorption, respiration and ingestion of contaminated food and also the drinking water as a potential contaminants exposure route for inorganic and organic pollutants to humans. Studies have shown that inorg

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39

Chen, Hsuan-Hsuan, and 陳宣亘. "The preparation of multiple functions pillars by modified clay for sorption of organic and inorganic pollutants." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/52490341625169735944.

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博士<br>國立中央大學<br>環境工程研究所<br>105<br>The current remediation technologies are not effective for the simultaneous removal of both organic and inorganic contaminants from the contaminated sites due to their different characteristics. In two decades ago, we had used a high molecular organic compound (HDTMA) to modify soil to enhance the SOM content, which increases the ability of organic compounds partitioning to the soil. One of the studies highlighted the preparation of adsorbents for both organic and inorganic pollutants by modifying sodium montmorillonite using different functionalized modifiers

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Mwangi, Isaac Waweru. "Functionalized synthetic-and bio-sorbents for removal of inorganic and organic contaminants in water." Thesis, 2013. http://hdl.handle.net/10210/8568.

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D.Phil. (Chemistry)<br>This thesis describes the improvement of sorption capacity and efficiency of synthetic and biological adsorbents towards selected pollutants by introducing functional groups on the sorbents. Functionalization was achieved by chemically modifying the binding sites of the studied adsorbents. The sorbent materials considered were chemical resins (Amberlite XAD 1180) and biomass (maize tassels and seaweed). The adsorbents were modified with ethylenediamine in order to improve their capacity for extraction of heavy metals, namely lead, copper and cadmium from water. For the r

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Chen, Yi-hsun, and 陳誼勳. "Reaction Behavior of Nanoscale Fe3O4 and [Fe3O4]MgO with Different Inorganic Pollutants (NO3-, Cd2+ and Cr6+) in Simulated Groundwater." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/75374599593178756507.

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碩士<br>國立中山大學<br>環境工程研究所<br>97<br>This study was to investigate the reaction behavior of laboratory-prepared nanoscale adsorbents (Fe3O4 and H-[Fe3O4]MgO) and inorganic pollutants (NO3-, Cd2+and Cr6+) in simulated groundwater. First, Fe3O4 and the composites of nanoscale Fe3O4 and MgO were prepared using chemical co-precipitation method. Then they were characterized and verified by various apparatuses and methods including X-ray diffractometry, scanning electron microscopy, Zetasizer, and specific surface area measurements. Second, the nanoscale adsorbents were used to adsorb inorganic pollu

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42

Pete, Kwena Yvonne. "Photocatalytic degradation of dyes and pesticides in the presence of ions." Thesis, 2015. http://hdl.handle.net/10352/308.

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M. Tech. (Department of Chemical Engineering, Faculty of Engineering and Technology), Vaal University of Technology<br>Water pollution caused by organic and inorganic contaminants represents an important ecological and health hazard. Simultaneous treatment of organic and inorganic contaminants had gradually gained great scientific interest. Advanced oxidation processes such as photocatalysis, using TiO2 as a photocatalyst, have been shown to be very robust in the removal of biorecalcitrant pollutants. These methods offer the advantage of removing the pollutants, in contrast to conventional t

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Okedeyi, Olumuyiwa Olakunle. "Assessment of polycyclic aromatic hydrocarbon (PAHs) and heavy metals in the vicinity of coal power plants in South Africa." Thesis, 2012. http://hdl.handle.net/10500/12001.

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The distribution and potential sources of 15 polycyclic aromatic hydrocarbons (PAHs) in soils and Digitaria eriantha in the vicinity of three South African coal-fired power plants, Matla, Lethabo and Rooiwal were determined by gas chromatography–mass spectrometry. An ultrasonic assisted dispersive liquid-liquid microextraction (UA-DLLME) method was developed for the extraction of polycyclic aromatic hydrocarbon in soil, followed by determination using gas chromatography mass spectrometry. The study showed that an extraction protocol based on acetonitrile as dispersive solvent and C2H2Cl2 as ex

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