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Dissertations / Theses on the topic 'Groundwater arsenic'

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Published: 4 June 2021

Last updated: 1 February 2022

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1

Radu, Tanja Clement Thangadurai Prabhakar Barnett Mark O. "Factors affecting arsenic mobilization in experimental subsurface systems." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2007%20Fall%20Dissertations/Radu_Tanja_3.pdf.

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Dissertation (Ph.D.)--Auburn University, 2007.<br>Abstract. Vita. The research presented herein has resulted in the following publications: Radu, Tanja; Yang, Jae K.; Hilliard Jeremy H.; Barnett, Mark O.; "Transport of As (III) and As (V) in experimental subsurface systems", ACS Symposium Series 915, Advances in Arsenic Research, 2005, 91-103 Radu, Tanja; Subacz, Jonathan L.; Jonathan L.; Phillippi, John M.; Barnett, Mark O. "Effects of dissolved carbonate on arsenic adsorption and mobility" Environmental Science and Technology, 2005, 39(20), 7875-7882 Radu, Tanja; Kumar, Anjani; Clemen

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2

Fayiga, Abioye O. "Phytoremediation of arsenic-contaminated soil and groundwater." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0008860.

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3

Valentine, Vecorena Rominna E. "Arsenic Analysis: Comparative Arsenic Groundwater Concentration in Relation to Soil and Vegetation." CSUSB ScholarWorks, 2016. https://scholarworks.lib.csusb.edu/etd/279.

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Arsenic (As) is a toxic semi-metallic element found in groundwater, soils, and plants. Natural and anthropogenic sources contribute to the distribution of arsenic in the environment. Arsenic’s toxic and mobile behavior is associated with its speciation ability. There are two types of arsenic available to the environment, inorganic and organic arsenic. Of the two, inorganic arsenic is more toxic to humans and more mobile in the environment. Two inorganic compounds responsible for arsenic contamination are trivalent arsenite, As (III), and pentavalent arsenate, As (V). Trivalent arsenate is cons

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4

Chowdhury, Mohammad. "Improving spatial mapping of arsenic contamination in groundwater a thesis presented to the faculty of the Graduate School, Tennessee Technological University /." Click to access online, 2009. http://proquest.umi.com/pqdweb?index=16&did=1759989311&SrchMode=1&sid=1&Fmt=6&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1250611777&clientId=28564.

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5

Chatterjee, Suvabrata. "Groundwater management in the Arsenic belt of India." Thesis, Queen's University Belfast, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.486050.

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The high arsenic content of the groundwater in the Holocene aquifer of the Bengal delta plain is unique and elusive in the extent of its exposure causing a threat to the lives of millions of people in the region. The thesis presents a general review on the arsenic contamination of the aquifer in the region with special emphasis on the mobilisation and mitigation issues and stresses the need for the holistic approach for sustainable development of the groundwater resource. A contingent valuation study ( CVM) was conducted to survey the residents of a arsenic affected village about their willing

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6

Uddin, G. M. Saleh. "Groundwater contamination by arsenic in Bangladesh : causes, consequences and solutions." Title page, table of contents and abstract only, 2001. http://web4.library.adelaide.edu.au/theses/09ENV/09envu18.pdf.

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7

Gutierrez-Ojeda, Carlos. "Origin of arsenic in the alluvial aquifer of the Region Lagunera, States of Coahuila and Durango, Mexico." Thesis, The University of Arizona, 1995. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_etd_hy0066_m_sip1_w.pdf&type=application/pdf.

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8

Hassan, Md Manzarul. "Arsenic toxicity in Bangladesh : health and social hazards." Thesis, Durham University, 2003. http://etheses.dur.ac.uk/1067/.

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9

Daigle, Ashley R. 1986. "Investigating Groundwater Arsenic Contamination using Aquifer Push-Pull Tests." Thesis, University of Oregon, 2010. http://hdl.handle.net/1794/10636.

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xiii, 67 p. : ill. (some col.) A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number.<br>The bedrock aquifer of the Southern Willamerte Basin, Oregon, USA, is contaminated with arsenic at concentrations as high as several ppm. Single-well push-pull tests were conducted to investigate how microbial metabolisms control arsenic occurrence and levels in the aquifer. Test solutions containing ethanol were injected into the aquifer; dissolved gases, groundwater, and sediments were then sampled to monitor the speciation of

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10

Turner, James P. Lee Ming-Kuo. "Groundwater geochemistry, geology, and microbiology of arsenic-contaminated Holocene alluvial aquifers, Manikganj, Bangladesh." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Spring/master's/TURNER_JAMEY_32.pdf.

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11

Oates, Holly G. "Molecular determination of arsenate respiring bacteria in estuarine sediments and groundwater /." Electronic version (PDF), 2007. http://dl.uncw.edu/etd/2007-2/r1/oatesh/hollyoates.pdf.

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12

Moore, Kenneth. "Treatment of Arsenic Contaminated Groundwater using Oxidation and Membrane Filtration." Thesis, University of Waterloo, 2005. http://hdl.handle.net/10012/866.

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Arsenic is a known carcinogen, causing cancers of the skin, lungs, bladder and kidney. Current research suggests that drinking water is the most common pathway for long-term low dose exposure. Arsenic contaminated drinking water has caused serious health problems in many countries including: India, Bangladesh, Argentina, Chile, Taiwan, the United States and Canada. Nanofiltration (NF) is a promising technology for arsenic removal since it requires less energy than traditional reverse osmosis membranes. Several studies have shown that nanofiltration is capable of removing the oxi

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13

Majumder, Santanu. "Pollution assessment of arsenic in groundwater: geochemistry and analytical aspects." Doctoral thesis, Universitat de Girona, 2013. http://hdl.handle.net/10803/125308.

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Apart from the geological controls that can cause As mobilization in groundwater in the Bengal Delta Plain, local anthropogenic factors may also contribute to some extent. Investigations showed that As(III) get enriched in the groundwater after the monsoonal season. This could be due to the enhanced reducing conditions in the aquifer post-monsoonal recharge. The larger inorganic colloids were responsible to scavenge As(III) and the smaller organic/organo-metallic colloids were found to scavenge As(V). A study was carried out to improve the Solar Oxidation and Removal of Arsenic (SORAS) for rur

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14

Kulkarni, Harshad Vijay. "Biogeochemical interactions of natural organic matter with arsenic in groundwater." Diss., Kansas State University, 2016. http://hdl.handle.net/2097/32910.

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Doctor of Philosophy<br>Department of Civil Engineering<br>David R. Steward<br>Groundwater contamination with arsenic (As), a naturally occurring metalloid, is a worldwide problem. Over 100 million people are at health risk due to arsenic contaminated groundwater, especially in the Bengal Basin in south-east Asia. Dissolved organic matter (DOM), geology and geomicrobiology are important factors affecting arsenic mobility. This study focuses on interactions of different aspects of natural organic matter in arsenic-contaminated environments. A literature review specifically includes past studies

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15

Dhakal, Prakash Saunders James A. "Sorption of arsenic by iron sulfide made by sulfate-reducing bacteria implications for bioremediation /." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/FALL/Geology_and_Geography/Thesis/Dhakal_Prakash_27.pdf.

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16

Shamsudduha, Mohammad. "Mineralogical and geochemical profiling of arsenic-contaminated alluvial aquifers in the Ganges-Brahmaputra floodplain, Minikganj, Bangladesh." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2007%20Spring%20Theses/SHAMSUDDUHA_MOHAMMAD_47.pdf.

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17

Tran, Trung Kien Ross William. "Assessing arsenic contamination awareness of groundwater dependent residents in the Hanoi area, Vietnam /." Abstract Full Text (Mahidol member only), 2008. http://10.24.101.3/e-thesis/2551/cd424/5037287.pdf.

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18

Sumon, Mahmud Hossain. "Geochemistry of arsenic in Bengal Basin wetland sediments." Thesis, University of Aberdeen, 2011. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=168311.

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Over the last decades, arsenic (As) contamination of soil-plant-water systems has become a major concern for Bangladesh and West Bengal, India. The geochemistry of the sediment depositional environment which subsequently, on sediment burial, give rise to elevated As in Holocene groundwater’s of Southeast Asia, may provide clues to unravelling the mechanistic basis and spatial heterogeneity of this phenomenon. The Sundarbans mangrove ecosystem, Bangladesh, is a modern analogue, and indeed forms a continuum with, the Holocene sediments of concern and thus studying As cycling in surface Sundarban

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19

Edvardsson, Matilda. "Geochemical tracing of Arsenic sources in groundwater at the remediated Storliden mine, Skellefte district." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-82694.

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The Swedish mining industry has changed from the historical situation with several smaller mines to the present situation with a few, bigger mines. This results in presence of abandoned mines around Sweden. Remediation of mines is regulated by legislation and the present demands are considerably higher than it was some decades ago. The Storliden mine was a Zink- and Coppermine active between 2001-2008. Storliden is located in Malå municipality, Västerbotten county, and is included in the Skellefte district, known for its sulfide mineralizations. The ore was broken underground with a techniqu

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20

McCaffery, Kevin A. "Isolation and Characterization of a Microorganism from Groundwater that Reduces Arsenate." Fogler Library, University of Maine, 2002. http://www.library.umaine.edu/theses/pdf/McCafferyKA2002.pdf.

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21

Devanney, Michael. "A Hedonic Analysis of Arsenic Contamination of Groundwater in Southern Maine." Fogler Library, University of Maine, 2005. http://www.library.umaine.edu/theses/pdf/DevanneyM2005.pdf.

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22

Shamsudduha, M. "Groundwater dynamics and arsenic mobilisation in Bangladesh : a national-scale characterisation." Thesis, University College London (University of London), 2011. http://discovery.ucl.ac.uk/1331905/.

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Elevated arsenic (As) concentrations in groundwater-fed drinking water supplies in Bangladesh are a major public health problem but the hydrogeological conditions that give rise to the mobilisation and regional-scale distribution of As in shallow groundwater remain unknown. Published hypotheses developed from highly localised case studies are, to date, untested regionally and contradictory. My doctoral thesis makes a novel and substantial contribution to knowledge of the relationship between groundwater dynamics and As mobilisation in the Bengal Basin by (1) characterising national-scale groun

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23

Do, Clement. "EVALUATION OF A FILTRATION SORBENT FOR REMEDIATION OF ARSENIC IN GROUNDWATER." CSUSB ScholarWorks, 2017. https://scholarworks.lib.csusb.edu/etd/474.

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A commercially available product, PURA PhosLock, was identified and evaluated for use as a sorbent to remove dissolved arsenic (As) from drinking water. Although marketed as a product to remove phosphate in aquaria, it is composed of iron oxide hydroxide (i.e., FeO(OH)), which is also known to adsorb dissolved As species from water. Arsenic was measured using standard methods and Graphite Furnace Atomic Absorption Spectroscopy. A first rough filtration test was performed to see if the PhosLock adsorbed As well. About 50 g of PhosLock was used to filter 10 L of tap water containing 100 ppb As.

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24

Clark, Ryan J. "Geochemical controls on arsenic concentrations in Rye Patch Reservoir, Pershing County, NV." abstract and full text PDF (free order & download UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1453185.

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25

Hildum, Brendan. "Arsenic Speciation and Groundwater Chemistry at a Landfill Site: A Case Study of Shepley's Hill Landfill." Thesis, Boston College, 2013. http://hdl.handle.net/2345/3234.

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Thesis advisor: Rudolph Hon<br>A groundwater plume beneath a capped landfill in north-central Massachusetts contains dissolved arsenic concentrations exceeding 10,000 ppb at several locations. The landfill closed in the early 1990's and contains minimally documented solid waste materials deposited over the course of nearly a century. The source(s), fate, and transport of arsenic in the landfill aquifer have been studied extensively over the past decade; however, the source and pathways of arsenic are not yet fully defined. The primary source of arsenic likely involves a combination of the land

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26

Ziegler, Brady Allen. "Biogeochemical controls on arsenic cycling in a hydrocarbon plume." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/84443.

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Arsenic (As) in drinking water poses a critical threat to public health. More than 150 million people worldwide are at risk of developing diseases from unsafe concentrations of As in groundwater. Arsenic occurs naturally in rocks, soils, and sediments and generally remains associated with solid phases. However, changes in aquifer geochemistry can mobilize As into groundwater, contaminating drinking water sources. This dissertation investigates As cycling in an aquifer contaminated by petroleum hydrocarbons near Bemidji, Minnesota, where As is mobilized into groundwater due to biodegradation

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27

Brown, Brendan. "Arsenic transport in groundwater, surface water, and the hyporheic zone of a mine-influenced stream-aquifer system." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/36197.

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We investigated the transport of dissolved arsenic in groundwater, surface water and the hyporheic zone in a stream-aquifer system influenced by an abandoned arsenopyrite mine. Mine tailing piles consisting of a host of arsenic-bearing minerals including arsenopyrite and scorodite remain adjacent to the stream and represent a continuous source of arsenic. Arsenic loads from the stream, springs, and groundwater were quantified at the study reach on nine dates from January to August 2005 and a mass-balance approach was used to determine hyporheic retention. Arsenic loading from the groundwate

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28

Rahman, Md Moklesur. "Variability in Hydrogeochemical Characteristics in Regions with High Arsenic Groundwater at Matlab, Southeastern Bangladesh." Thesis, KTH, Miljögeokemi och ekoteknik, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-96306.

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Elevated levels of geogenic arsenic (As) in groundwater are regarded as the most formidable environmental crisis in the contemporary world and an estimated 30-70 million people in Bangladesh are at risk. Many of the provided options for mitigation have not been well accepted. In recent years, local drillers have been targeting As-low groundwater on the basis of the color of the sediments. A correlation between the color characteristics of the sediments and the groundwater redox conditions and thereby the risk for As mobilization has been established. It is possible to assess the relative possi

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29

Kumar, Rajender. "Development and potential applications of nanomaterials for arsenic removal from contaminated groundwater." Thesis, KTH, Miljögeokemi och ekoteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-96106.

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In this study, a magnetic nanomaterial was used for the binding of anionic arsenic species from contaminated groundwater. Iron oxide (Fe3O4) magnetic nanoparticles (NPs) and the surface modified Fe3O4 NPs with 3-aminopropyl-triethoxysilane (3-APTES), Trisodium citrare (TSC) and Chitosan were synthesized with the co-precipitation method. Structural characterizations showed that the four kinds of NPs had different sizes an average particle range size of 15-20 nm was observed with Transmission Electron Microscopy. X-ray diffraction was used to identify the crystalline structure of synthesized Fe3

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30

Stahl, Mason Odell. "Surface-water groundwater interaction and arsenic mobilization in south and southeast Asia." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/99609.

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Thesis: Ph. D. in Environmental Engineering, Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>Contamination of groundwater with geogenic arsenic is widespread throughout much of South and Southeast Asia and poses a serious health risk to the millions of individuals who consume this water. It is widely agreed that the dominant mechanism of arsenic mobilization is reductive dissolution of arsenic-bearing iron-oxides coupled to the oxidation of organic carbon. However

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31

Ahmed, Shakib. "Stable isotopic study of groundwater arsenic contaminated plume at Shepley's Hill Landfill." Thesis, Boston College, 2014. http://hdl.handle.net/2345/3876.

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Thesis advisor: Rudolph Hon<br>In the northeast United States, arsenic (As) contamination in groundwater is frequently associated with historical landfill leachate plumes. Based on the history of Shepley's Hill Landfill (SHL) in Devens, MA, solid waste disposal activities spanned nearly a century of landfilling with little or no documentation of when or what waste material was disposed. Past geochemical investigations proved the presence of high levels of As in groundwaters within and around the SHL region. A total of 114 samples were collected from the SHL region and analyzed for their hydrog

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32

Jones, Robert Garret. "Adsorption of As(V), As(III) and methyl arsenic by calcite and the impact of some groundwater species." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1674.

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33

Maguffin, Scott. "A Biogeochemical Study of Groundwater Arsenic Contamination in the Southern Willamette Basin, Oregon, USA." Thesis, University of Oregon, 2016. http://hdl.handle.net/1794/20692.

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The mobilization and transformation of arsenic within the critical zone is a major cause of human suffering worldwide. Microorganisms, as they grow and utilize organic matter, accelerate redox processes that can transform and mobilize arsenic within aquifers on a large scale. As such, naturally occurring groundwater arsenic is a particularly hazardous problem that is chronically poisoning over 100 million people annually. Historically, groundwater arsenic research has been focused on the two principal inorganic arsenic species: arsenate [As(V)] and arsenite [As(III)]. Recently, organic arsenic

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34

Choudhury, Zubaida Akhtar. "Groundwater arsenic pollution in Bangladesh : a study of water consumption behaviour and decision-making processes within rural communities." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610220.

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35

Lawson, Michael. "Isotopic tracers of surface derived components in arsenic rich shallow aquifers of South and South East Asia." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/isotopic-tracers-of-surface-derived-components-in-arsenic-rich-shallow-aquifers-of-south-and-south-east-asia(a8f66fd1-e026-4259-9b75-b727e72d9f85).html.

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The contamination of groundwater by naturally occurring arsenic (As) in South and South East Asia has resulted in the exposure of an estimated 100 million people to hazardously high concentrations of this known carcinogen. Whilst the biogeochemical processes and mechanisms responsible for releasing As to groundwater are now understood, the fundamental controls on these processes have yet to be resolved. In particular, the role of different sources of organic matter (OM) in controlling the rate and extent of As release and how the contributions of these different sources may be influenced by gr

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36

VanDerwerker, Tiffany Jebson. "Evaluating Sources of Arsenic in Groundwater in Virginia using a Logistic Regression Model." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/77957.

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For this study, I have constructed a logistic regression model, using existing datasets of environmental parameters to predict the probability of As concentrations above 5 parts per billion (ppb) in Virginia groundwater and to evaluate if geologic or other characteristics are linked to elevated As concentrations. Measured As concentrations in groundwater from the Virginia Tech Biological Systems Engineering (BSE) Household Water Quality dataset were used as the dependent variable to train (calibrate) the model. Geologic units, lithology, soil series and texture, land use, and physiographic pro

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37

Eastridge, Emily. "ARSENIC HETEROGENEITY IN AQUIFER SEDIMENTS FROM WEST BENGAL, INDIA." UKnowledge, 2011. http://uknowledge.uky.edu/ees_etds/3.

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Multiple studies in the Bengal basin have shown that elevated As in groundwater coincides with reduced, relatively dark sediments of Himalayan provenance. In West Bengal state (India), As concentrations > 10 μg/L tend to occur east of the River Bhagirathi-Hoogly, the main distributary of the Ganges. Associations among sediment chemistry and mineralogy for four cores from either side of the Bhagirathi-Hoogly (cores 1 and 2 to the east, 3 and 4 to the west) in Murshidabad district were investigated. Ten sediment samples were collected from each boring at various depths to a maximum of 38 to 43 m

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Gingborn, Nicklas, and Hanna Wåhlén. "Investigating sustainable mitigation alternatives for groundwater in Matlab Upazila, Bangladesh. : A Minor Field Study." Thesis, KTH, Miljögeokemi och ekoteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-99340.

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Since the late 20th century most people in rural Bangladesh use hand pumped tube wells to extract groundwater as their primary source of water. In 1993 it was officially recognized that many of the Holocene groundwater aquifers contain elevated levels of arsenic (As) and that millions of people in Bangladesh are exposed and at risk for mass poisoning. The need to focus efforts to areas with scarce supply of safe drinking water has raised the need to quickly locate and identify these areas. Mitigation options evaluated in this study focus on 1) how to target As safe aquifers and 2) how to ident

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Nguyen, Hoang Nam. "Creating nano composite TiO2.Fe2O3/laterite material applying to treat arsenic compound in groundwater." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-176920.

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This article presents nano composite TiO2.Fe2O3/laterite materials, which were successfully prepared by hydrometallurgical method. The materials were modified using urea as the nitrogen source. The particles size of the materials is from 20-30 nanometers. The obtained materials can not only absorb arsenic compounds but also enhance the ability of converting As (III) or As (V) into Aso, which is removed from solution. Arsenic removal efficiency of these materials is high. Using sunlight in a hydraulic retention time, about 180 minutes, the arsenic value at the inflow was about 10 mg/L but the o

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40

Neidhardt, Harald [Verfasser]. "Arsenic in groundwater of West Bengal: Implications from a field study / Harald Neidhardt." Karlsruhe : KIT Scientific Publishing, 2012. http://www.ksp.kit.edu.

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41

Bonilla, Ramos Alejandra. "Geochemistry of arsenic and sulfur in southwest Ohio bedrock, outwash deposits and groundwater /." Cincinnati, Ohio : University of Cincinnati, 2005. http://www.ohiolink.edu/etd/view.cgi?acc%5Fnum=ucin1132088950.

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Thesis (M.S.)--University of Cincinnati, 2005.<br>Title from electronic thesis title page (viewed Apr. 12, 2006). Includes abstract. Keywords: arsenic, sulfur isotopes, Kope Formation, Shaker Creek Aquifer, buried valley aquifer, groundwater. Includes bibliographical references.

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42

Gupta, Prachee. "Utilization of University of Florida flux meter for estimating arsenic contamination in groundwater." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0005441.

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43

BONILLA, ALEJANDRA. "GEOCHEMISTRY OF ARSENIC AND SULFUR IN SOUTHWEST OHIO: BEDROCK, OUTWASH DEPOSITS AND GROUNDWATER." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1132088950.

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44

Abedin, Md Anwarul. "Mitigation of Arsenic in Groundwater Using Zero Valent Iron: removal mechanism and application." 京都大学 (Kyoto University), 2011. http://hdl.handle.net/2433/142484.

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45

Enriquez, Hersy J. "Biogeochemical and ecohydrologic controls on arsenic mobilization in groundwater of the Okavango Delta." Thesis, Kansas State University, 2014. http://hdl.handle.net/2097/18251.

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Master of Science<br>Department of Civil Engineering<br>Natalie Mladenov<br>The detrimental health effects of arsenic (As) contamination have motivated the study of As mobility around the globe. The variability in naturally occurring As concentration is due to variation in geology and climate. In arid environments with high evaporation, ecohydrology and As desorption under alkaline pH are thought to be responsible for high As concentrations. In reducing groundwater, on the other hand, microbial iron (Fe) reductive dissolution is known to release As into solution. In such environments, As-sulfi

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46

von, Brömssen Mattias. "Hydrogeological and geochemical assessment of aquifer systems with geogenic arsenic in Southeastern Bangladesh : Targeting low arsenic aquifers for safe drinking water supplies in Matlab." Doctoral thesis, KTH, Miljögeokemi och ekoteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-53300.

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Naturally occurring arsenic (As) in Holocene aquifers in Bangladesh have undermined a long success of supplying the population with safe drinking water. Arsenic is mobilised in reducing environments through reductive dissolution of Fe(III)-oxyhydroxides. Several studies have shown that many of the tested mitigation options have not been well accepted by the people. Instead, local drillers target presumed safe groundwater on the basis of the colour of the sediments. The overall objective of the study has thus been focussed on assessing the potential for local drillers to target As safe groundwa

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47

Sowder, Jonathan T. "The origin and fate of arsenic in coalbed natural gas produced water ponds." Laramie, Wyo. : University of Wyoming, 2009. http://proquest.umi.com/pqdweb?did=1935323111&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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48

Xie, Yu. "Spatial Distribution and Pathways of Arsenic in Shepley's Hill Landfill, Ayer, Massachusetts." Thesis, Boston College, 2013. http://hdl.handle.net/2345/3241.

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Thesis advisor: Rudolph Hon<br>Groundwater in the Shepley's Hill Landfill (SHL) area had a high arsenic concentration for at least 20 years. This study is aimed at understanding the migration pathways of arsenic in the SHL area and postulating the possible sources and mechanisms for the mobilization of arsenic. A direct-push sampling technique (DPT) was applied in the summer of 2010 within the SHL and its downgradient area, which provided groundwater samples from various depths and locations. A long-term monitoring dataset from 1998 to 2009 was utilized as a subsidiary source for temporal anal

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Stuckman, Mengling Yi. "Biotic Arsenic Mobilization in Natural and Anthropogenic Systems from Redox Transformations of Arsenic, Iron and Sulfur." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1388505419.

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Magnone, Daniel. "Modelling the sources of organic material, processes and timescales leading to arsenic contamination of circum-Himalayan groundwaters." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/modelling-the-sources-of-organic-material-processes-and-timescales-leading-to-arsenic-contamination-of-circumhimalayan-groundwaters(852ae5a1-b09a-44fd-99b3-d8ae2dcc65c6).html.

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Abstract:

Arsenic contamination of circum-Himalayan groundwater is leading to one of the greatest humanitarian disasters of modern times, poisoning at least 70 million people who are mostly poor and rural. The groundwater is hosted in Holocene aquifers consisting of Himalayan sediments deposited by the great Asian rivers in deltaic environments. Arsenic is released when organic material (OM) reacts with the iron-oxide minerals co-deposited in the sediments onto which arsenic is adsorbed. The source of OM is one of the most important questions facing researchers and policy makers. There are generally acc

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