Bibliografias temáticas / Arsenic Environmental aspects Bangladesh

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Literatura científica selecionada sobre o tema "Arsenic Environmental aspects Bangladesh"

Autor: Grafiati
Publicado: 4 de junho de 2021
Última modificação: 19 de fevereiro de 2022

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Artigos de revistas sobre o assunto "Arsenic Environmental aspects Bangladesh"

1

Peters, Gregory R., Ross F. McCurdy e J. Thomas Hindmarsh. "Environmental Aspects of Arsenic Toxicity". Critical Reviews in Clinical Laboratory Sciences 33, n.º 6 (janeiro de 1996): 457–93. http://dx.doi.org/10.3109/10408369609080055.

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Kile, Molly L., E. Andres Houseman, Carrie V. Breton, Thomas Smith, Quazi Quamruzzaman, Mahmuder Rahman, Golam Mahiuddin e David C. Christiani. "Dietary Arsenic Exposure in Bangladesh". Environmental Health Perspectives 115, n.º 6 (junho de 2007): 889–93. http://dx.doi.org/10.1289/ehp.9462.

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Zaved Kaiser Khan, Mohammad. "Arsenic mitigation measures in Bangladesh". Revue des sciences de l’eau 25, n.º 1 (28 de março de 2012): 49–67. http://dx.doi.org/10.7202/1008535ar.

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The scale of arsenic toxicity of the groundwater in Bangladesh is greater than any environmental debacle in the history of human civilization. The main route of arsenic accumulation in the human body is the ingestion of arsenic tainted water. Because of the undetectable nature of arsenic poisoning at the early stage and lack of awareness due to mass illiteracy, poverty and malnutrition, arsenic related ailments may cause death. However, this paper mainly discusses arsenic mitigation measures in Bangladesh. Although a piped surface water supply after treatment is the absolute solution to get rid of this crisis, the weak economic background of Bangladesh does not support supplying such water to every corner of rural areas. Hence research groups have developed their own methods to suit the local environment, using locally available materials and approaches based on the common method of arsenic removal: use of oxidizing agents, followed by flocculation and precipitation. Again, among different alternative water supply options, deep tubewells, which have been used by the communities in Bangladesh during the past few decades, appear to be a more suitable alternate option. Moreover, household-based arsenic filters can be a good choice if proper maintenance can be done.
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Yokota, H., K. Tanabe, M. Sezaki, Y. Yano, K. Hamabe, K. Yabuuchi e H. Tokunaga. "Arsenic contamination in groundwater of Samta, Bangladesh". Water Science and Technology 46, n.º 11-12 (1 de dezembro de 2002): 375–80. http://dx.doi.org/10.2166/wst.2002.0765.

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In March 1997, we analyzed the water of all tubewells used for drinking in Samta village in the Jessore district, Bangladesh. It has been confirmed from the survey that the arsenic contamination in Samta was one of the worst in the Ganges basin including West Bengal, India. 90% of the tubewells had arsenic concentrations above the Bangladesh standard of 0.05 mg/l. Tubewells with higher arsenic concentrations of over 0.50 mg/l were distributed in the southern area with a belt-like shape from east to west, and the distribution of arsenic concentration showed gradual decreasing toward northern area of the village. In order to examine the characteristics of the arsenic distribution in Samta, we have performed investigations such as: 1) the characteristics of groundwater flow, 2) the distribution of arsenic in the ground, 3) the concentration of arsenic and the other dissolved materials in groundwater, and 4) the distribution of arsenic concentration of trivalence and pentavalence. This paper examines the mechanism of arsenic release to groundwater and explains the above-mentioned characteristics of the arsenic contamination in Samta through the investigations of the survey results for these years.
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Rahman, Mahfuzar. "The Bangladesh Arsenic Catastrophe: Clinical Manifestations". Tropical Doctor 33, n.º 1 (janeiro de 2003): 42–44. http://dx.doi.org/10.1177/004947550303300121.

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Mukherjee, A. B., e P. Bhattacharya. "Arsenic in groundwater in the Bengal Delta Plain: slow poisoning in Bangladesh". Environmental Reviews 9, n.º 3 (1 de setembro de 2001): 189–220. http://dx.doi.org/10.1139/a01-007.

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The purpose of this paper is to provide an overview of the problems concerning the widespread occurrences of arsenic in groundwater in Bangladesh, a land with enormous resources of precipitation, surface water, and groundwater. Because of the potential risk of microbiological contamination in the surface water, groundwater was relied on as an alternate source of drinking water. Exploitation of groundwater has increased dramatically in Bangladesh since the 1960s to provide safe water for drinking and to sustain wetland agriculture. The presence of arsenic in the groundwater at elevated concentrations has raised a serious threat to public health in the region. Nearly 60–75 million people inhabiting a large geographical area are at potential risk of arsenic exposure, and several thousands have already been affected by chronic arsenicosis. The source of arsenic in groundwater is geogenic and restricted within the Holocene sedimentary aquifers. Mobilization of arsenic from the alluvial aquifers is primarily effected through a mechanism of reductive dissolution of the iron oxyhydroxides within the sediments, rather than by the oxidation of pyrite, as has been hypothesized by other workers. The problem is further accentuated by the fact that arsenic is also found at elevated concentrations in vegetables and rice grown in the areas where high-arsenic groundwater is used for irrigation. Dietary habits among the population are also an important pathway for arsenic ingestion. Studies are in progress at national as well as international levels to alleviate the arsenic crisis in Bangladesh. Besides the identification of arsenic-free tubewells in the affected areas for drinking purposes, purification of groundwater at household level by low-cost arsenic removal techniques is suggested. Rehabilitation of the patients with chronic arsenicosis and arsenic education programs for rural communities must be addressed urgently by the government of Bangladesh. Key words: arsenic, groundwater, chemistry, redox, causes, effects, Bangladesh.
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HABIB, M. A., S. MIONO, K. SERA e S. FUTATSUGAWA. "PIXE ANALYSIS OF HAIR IN ARSENIC POLLUTION, BANGLADESH". International Journal of PIXE 12, n.º 01n02 (janeiro de 2002): 19–34. http://dx.doi.org/10.1142/s0129083502000044.

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The groundwater pollution by arsenic in Bangladesh causes a serious problem for millions of people who are exposed to poisoning by this toxic element. In an attempt to evaluate the extent of arsenic poisoning, hair samples of people living in Pabna district were collected. The hair samples were analyzed using Proton Induced X-ray Emission (PIXE) through exciting the atoms of a specimen so that their intensities can be converted into elemental concentrations in the specimen. The elements present in the specimen are identified by the corresponding X-ray energies and their concentrations are deduced from the X-ray intensities. The results from hair samples indicate substantially higher level of arsenic than those demarcated as toxic levels, in people from member families both affected and non-affected by poisoning. We correlate it with exceedingly high arsenic concentration in drinking water far above the permissible limit. The analytical results are compared with the results of arsenic and other elemental analysis of 160 Bangladeshi hair samples with that of 250 Japanese samples. The results show markedly higher levels of arsenic, manganese, iron and lead where the latter three elements show a positive relation with arsenic in the case of Bangladeshi as compared to the samples from Japan. On the other hand, selenium concentrations show very low level in the Bangladeshi samples compared to Japanese, displaying an inverse relationship with arsenic. The mechanism of arsenic in relation to other elements in the human body needs further investigation. The preliminary results call for detailed experimental and epidemiological studies to further characterize these aspects.
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AKMAM, Wardatul, e Md Fakrul ISLAM. "Arsenic Contamination in Ground Water in Bangladesh". Studies in Regional Science 37, n.º 3 (2007): 829–40. http://dx.doi.org/10.2457/srs.37.829.

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Hindmarsh, J. Thomas, Ross F. McCurdy e John Savory. "Clinical and Environmental Aspects of Arsenic Toxicity". CRC Critical Reviews in Clinical Laboratory Sciences 23, n.º 4 (janeiro de 1986): 315–47. http://dx.doi.org/10.3109/10408368609167122.

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Gamble, Mary V., Xinhua Liu, Habibul Ahsan, J. Richard Pilsner, Vesna Ilievski, Vesna Slavkovich, Faruque Parvez, Diane Levy, Pam Factor-Litvak e Joseph H. Graziano. "Folate, Homocysteine, and Arsenic Metabolism in Arsenic-Exposed Individuals in Bangladesh". Environmental Health Perspectives 113, n.º 12 (dezembro de 2005): 1683–88. http://dx.doi.org/10.1289/ehp.8084.

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Teses / dissertações sobre o assunto "Arsenic Environmental aspects Bangladesh"

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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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Huhmann, Brittany Lynn. "Mitigating the impacts of arsenic on human health and rice yield in Bangladesh". Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/120601.

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Thesis: Ph. D. in Environmental Engineering, Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2018.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references.
Naturally-occurring groundwater arsenic can threaten human health and food security. In Bangladesh, >50 million people are estimated to have chronically consumed water with arsenic above the World Health Organization (WHO) guideline of 10 μg/L, which can contribute to cancer, cardiovascular disease, and reproductive and developmental effects. Studies relating arsenic exposure to health impacts generally estimate dose based on participants' primary household wells. Using a mass-balance for arsenic and water, we estimate that participants in Araihazar, Bangladesh obtain 37±8% of their water from primary household wells and 31±14% from other wells, and we thus recommend the inclusion of other wells in dose estimation. Concentrations of arsenic in well water are spatially variable, enabling many exposed households to switch to nearby lower-arsenic wells in response to area-wide well testing. Following well testing and education in Araihazar, arsenic exposure declined and remained lowered for at least eight years. Participants with arsenic-unsafe wells were 6.8 times more likely to switch wells over the first two years and 1.4-1.8 times more likely to switch wells over the ensuing decade. Rice comprises more than 70% of calories consumed in Bangladesh, and rice yield is negatively impacted by the buildup of arsenic in soil from irrigation with high-arsenic water. We investigated the effect of soil arsenic on yield using a controlled study design where we exchanged the top 15 cm of soil between high-arsenic and low-arsenic plots. Differences in yield were negatively correlated to differences in soil arsenic between adjacent soil replacement and control plots, suggesting that boro rice yield countrywide may be diminished by 7-26% due to arsenic in soil. Soil testing and removal of high-arsenic soil may enable farmers to mitigate the impacts of arsenic on rice. Twelve measurements made with the ITS Econo-Quick field kit could be used to estimate whether soil arsenic was above or below a 30 mg/kg intervention threshold with 80-90% accuracy. A soil inversion, where deep low-arsenic soil was exchanged with surface high-arsenic soil, decreased soil arsenic, organic carbon, nitrogen, and phosphorus concentrations by about 40% in the top 20 cm of soil and improved rice yield by 15-30%.
by Brittany Lynn Huhmann.
Ph. D. in Environmental Engineering
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Ashfaque, Khandaker. "Effect of hydrological flow pattern on groundwater arsenic concentration in Bangladesh by Khandaker Ashfaque". Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/42218.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2007.
Includes bibliographical references.
Widespread arsenic contamination of groundwater has become a major concern in Bangladesh since the water supply, particularly in rural areas, is heavily dependent on groundwater. However, relative to the extent of research on biogeochemical processes of arsenic mobilization, very little work has been conducted to understand the complex transient dynamics of groundwater flow, and the transport of arsenic and other solutes that control its mobility in the area. A detailed three-dimensional hydrological model of our study area in Munshiganj indicates that: (1) the shallow aquifer acts primarily as a conduit for flow from ponds and rice fields to irrigation wells and rivers; (2) most inflow to the aquifer occurs during the dry season, and monsoon contributes relatively little to the inflow since the aquifer storage is small; (3) since the increase in irrigation pumping and pond construction have changed the groundwater flow dynamics, arsenic concentrations are unlikely to be at steady-state. These observations are consistent with those from the lumped-parameter model. Analysis of various fluxes from the three-dimensional groundwater model also reveals that ponds provide the largest source of recharge to the aquifer, and hence, is a potential source of dissolved arsenic to the subsurface. Accordingly, a "Pond Hypothesis" has been developed suggesting that arsenic mobilization in Bangladesh aquifer is deriving from reductive dissolution of various arsenic bearing oxides (the widely accepted mechanism for arsenic mobilization in Bangladesh) deposited at the pond bottoms. The process of reductive dissolution occurs in the presence of organic matter and under reducing environment, when residing microbes respire on oxygen from oxide-minerals (e.g. Fe and Mn oxides) to process the organic matter for growth, and subsequently causes release of arsenic associated with the oxide-minerals to the aqueous phase.
(cont.) Afterwards, at the end of flooding season, the dissolved arsenic along with mixture of various dissolved solutes from pond bottoms enters the aquifer and is driven towards the well screen both vertically due to overlying recharge and horizontally due to increased pumping. Extensive small-scale pump tests and one large-scale extended pumping experiment carried out at our study area in Munshiganj indicates that the aquifer is anisotropic in nature creating flow convergence at the depth of irrigation well screen. Results from a three-dimensional hydrological model suggests that groundwater irrigation has changed the flow dynamics in the area - not only by reducing the residence and travel times, but also carrying solutes to particular depth from different sources and locations. Model simulations carried out for three different scenarios - 'Current Stage' (if the current flow condition continues), 'Ancient Stage' (before the advent of habitation and irrigation practices), and 'Inception Stage' (the beginning of irrigation and creation of ponds) - indicates that in general, the rice field water dominates at the shallowest depth while pond water dominates at the depth of irrigation well, and the contribution from river water increases with depth. Analysis of the average groundwater age distribution indicates that younger age dominates at shallower depths. More importantly, the age values at the monitoring locations can be explained by the relative contribution of recharge water from different sources. Furthermore, modeling results indicate that the groundwater age at 30m depth in Bejgoan Field Site is about 24-60 years old, which is consistent with the tritium age measurement at the same depth. The stable water isotope values in our study area shows a similar profile to the dissolved arsenic concentration, and their peak concentrations coincidence with the depth of irrigation well.
(cont.) Furthermore, comparison of calculated and measured isotopic values at the Bejgoan Field Site indicates that the calculated values are within the range of measured values, and thereby, confers that the observed isotopic profile results from the mixing of water from various recharge sources. More importantly, the lighter water at the depth of peak arsenic concentration can only be derived from lighter pond water recharge in November, whereas recharge from river and rainfall mainly occurs after March when those waters are actually heavier. Finally, observation of two distinct peaks in the dissolved arsenic concentration profile from a recently installed cluster beside a highly recharging pond provides a direct evidence supporting the "Pond Hypothesis". While the peak concentration at 30-40m depth corresponds to the characteristic regional hump observed in our study area, the second peak at a shallower depth (20m) has been explained as the local arsenic plume originating from the nearby pond bottom.
Ph.D.
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KARTHIK, BHAMIDIMARRI B. K. "SPATIAL VARIABILITY OF GROUNDWATER ARSENIC IN BANGLADESH: AN EVALUATION OF GEOLOGIC AND PHYSICAL CONTROLS". University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1005673192.

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Neumann, Rebecca B. "The hydrogeochemistry of pond and rice field recharge : implications for the arsenic contaminated aquifers in Bangladesh". Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/57548.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, February 2010.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student submitted PDF version of thesis. Page 290 blank.
Includes bibliographical references.
The shallow aquifers in Bangladesh, which provide drinking water for millions and irrigation water for innumerable rice fields, are severely contaminated with geogenic arsenic. Water mass balance calculations show that groundwater-irrigated rice fields and man-made ponds are the primary sources of recharge to the contaminated aquifers. We studied the hydrology and chemistry of these anthropogenic recharge sources to determine the impact they have on groundwater arsenic concentrations. Our hydrogeochemical investigation involved fieldwork, laboratory analyses, and modeling. The field research spanned three years and included the deployment of a sensor network to continually monitor soil moisture and water potential, tracer tests to visualize flow patterns, soil cores to determine soil properties, and soil and water samples to ascertain chemical characteristics. The large amount of generated data were synthesized with hydrologic, geochemical and mass-balance models. The study showed that physical and chemical differences between rice fields and ponds explain the spatial patterns of arsenic in the Bangladeshi aquifers. Recharge from rice fields is both temporally and spatially heterogeneous. It is focused through bunds (the raised boundaries around the perimeter of fields) and depends on irrigation intervals. Flow from ponds is constant and uniform through the pond sediments. These distinct hydrologic behaviors produce different water chemistries. Ponds contribute anoxic recharge elevated in labile organic carbon, while rice fields contribute semi-oxic recharge that lacks labile organic carbon.
(cont.) The labile organic carbon in the pond recharge stimulates microbial respiration that mobilizes sediment-bound arsenic, contributing dissolved arsenic to the aquifers. Conversely, rice-field recharge does not mobilize arsenic. In fact, rice fields act as an arsenic sink. Irrigation moves arsenic-rich groundwater from the aquifers and deposits it on the rice fields. Most of the deposited arsenic does not return to the aquifers; it is sorbed by the field's surface soil and bunds, and is swept away in the monsoon floods. The results demonstrate how land-use changes in Bangladesh have impacted groundwater arsenic concentrations.
by Rebecca B. Neumann.
Ph.D.
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6

Savoie, Courtney Beth Young. "Arsenic Mobility and Compositional Variability in High-Silica Ash Flow Tuffs". PDXScholar, 2013. https://pdxscholar.library.pdx.edu/open_access_etds/1012.

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Volcanic rocks typically have only low to moderate arsenic concentrations, none-the-less, elevated levels of arsenic in ground waters have been associated with pyroclastic and volcaniclastic rocks and sediments in many parts of the world. The potential for arsenic leaching from these deposits is particularly problematic as they often comprise important water-bearing units in volcanic terrains. However, the role that chemical and mineralogical variations play in controlling the occurrence and mobility of arsenic from pyroclastic rocks is largely unexplored. This study uses chemical and X-ray diffraction data to characterize and classify 49 samples of ash-flow tuffs, and 11 samples of tuffaceous sediments. The samples exhibit a range of devitrification and chemical weathering. Total and partial digestion, and water extractions of samples are used to determine the total, environmentally available, and readily leachable fractions of arsenic present in all tuff samples. Leaching experiments were also performed with buffered solutions to determine the influence of elevated pH levels on arsenic mobility. The 49 tuff samples have a mean arsenic content of 7.5 mg kg-1, a geometric mean arsenic content of 4.8 mg kg-1, a median arsenic content of 5.2 mg kg-1, and a maximum arsenic concentration of 81 mg kg-1. The mean and median values are 2.8 - 4.4x the average crustal abundance of 1.7 mg kg-1 (Wedepohl, 1995), and consistent with previously reported values for volcanic glasses and felsic volcanic rocks (Onishi and Sandell, 1955; Wedepohl, 1995), although the maximum arsenic content is higher than previously reported (e.g., Casentini et al., 2010; Fiantis et al., 2010; Nobel et al., 2004). In addition, the arsenic concentrations of tuffs were found to be highly heterogenous, both between and within individual units, and in some cases, individual outcrops. Results of whole rock and leachate analyses indicate that there is no significant difference in the total arsenic content of tuffs as a result of devitrification or weathering, but both devitrified and weathered tuffs contain higher levels of environmentally available arsenic than unweathered glassy tuffs. Glassy tuffs did not produce any readily leachable arsenic, while individual devitrified and weathered tuffs both generated aqueous concentrations that exceeded regulatory limits after 18 hours. Leaching of weathered tuffs produced higher levels of arsenic at high (~9-11) pH than in tests conducted at circum-neutral pH. Devitrified and glassy tuffs showed no increase in leachable arsenic with increasing pH. The results of this study indicate that devitrification and weathering processes determine the host phases, degree of adsorption, and overall mobility of arsenic from ash-flow tuffs. Tuffs that have undergone different types of alteration are likely to have different host phases of arsenic, and different mechanisms that mobilize arsenic into the environment. Potential host phases and mobility mechanisms are discussed, and a conceptual model of arsenic behavior in ash-flow tuffs is proposed.
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Halim, Sadeka. "Invisible again : women and social forestry in Bangladesh". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ64569.pdf.

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Swarna, Anitha. "Removal of Arsenic Using Iron Coated Limestone". TopSCHOLAR®, 2014. http://digitalcommons.wku.edu/theses/1342.

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Arsenic contamination in drinking water is a severe problem worldwide. The best way to prevent hazardous diseases from chronic arsenic exposure is to remove the exposure. Efforts to remediate arsenic in drinking water have taken two tracks. One is to provide surface or shallow well water sources as an alternative to the arsenic contaminated deep wells. Another approach is to remove arsenic from the contaminated water. Different removal technologies like oxidation, chemical coagulation, precipitation, adsorption and others are available. There are problems and benefits associated with each of these approaches that can be related to cultural, socio-economic and engineering influences. The method proposed in this research is adsorption of arsenic to iron coated limestone. Different iron coated limestone samples were prepared. Standard solutions of 100ppb arsenic were prepared and batch and kinetic experiments were conducted. The final solution concentrations were analyzed by Graphite Furnace Atomic Adsorption Spectroscopy (GFAAs) and the results showed that iron coated limestone removed arsenic below 10ppb with 5 grams of material. Variations in iron coverage impacted efficiency of arsenic removal.
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Lesley, Michael Patrick. "The fluxes and fates of arsenic, selenium, and antimony from coal fired power plants to rivers". Thesis, Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04082004-180307/unrestricted/lesley%5fmichael%5fp%5f200312%5fms.pdf.

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Lou, Laiqing. "Arsenic uptake, accumulation and tolerance in Chinese brake fern (Pteris vittata L., an arsenic hyperaccumulator) under the influence of phosphate". HKBU Institutional Repository, 2008. http://repository.hkbu.edu.hk/etd_ra/928.

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Livros sobre o assunto "Arsenic Environmental aspects Bangladesh"

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Bangladesh. Arsenic Policy Support Unit., Great Britain. Dept. for International Development, Bangladesh. e UNICEF Bangladesh, eds. Not just red or green: An analysis of arsenic data from 15 upazilas in Bangladesh. Dhaka: Govt. of the People's Republic of Bangladesh, Ministry of Local Govt., Rural Development, and Co-operatives, Dept. of Public Health & Engg., Arsenic Policy Support Unit, 2004.

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Tamaki, Stanley. Environmental biochemistry of arsenic. Sacramento, CA: San Joaquin Valley Drainage Program, 1989.

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Farhana, Sultana, Mannan Fatema e Bangladesh. Arsenic Policy Support Unit., eds. Selected papers on the social aspects of arsenic and arsenic mitigation in Bangladesh. Dhaka: Arsenic Policy Support Unit, 2006.

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4

International Conference on Bangladesh Environment (2nd 2002 Dhaka, Bangladesh). Bangladesh environment, 2002: A compilation of technical papers of the 2nd International Conference on Bangladesh Environment (ICBEN-2002). Editado por Ahmed M. Feroze, Tanveer Saleh, Badruzzaman A. B. M e Bangladesh Poribesh Andolon. Dhaka: Scientific Subcommittee on behalf of the Bangladesh Poribesh Andolon, 2002.

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name, No. Arsenic in ground water. Boston, MA: Kluwer Academic Publishers, 2003.

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Feroze, Ahmed M., M. Ashraf Ali, Adeel Zafar, Bangladesh University of Engineering and Technology. e United Nations University, eds. Fate of arsenic in the environment. [Dhaka]: Published by ITN Centre, BUET on behalf of Bangladesh University of Engineering and Technology and The United Nations University, 2003.

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Arsenic: Natural and anthropogenic. Boca Raton: CRC Press, 2011.

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8

H, Brammer, e Richards K. S, eds. Arsenic pollution: A global synthesis. Malden, MA, USA: Blackwell, 2009.

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Kamal, Golam Monowar. Environmental bibliography of Bangladesh. Dhaka, Bangladesh: Swedish International Development Authority, 1994.

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10

Johnson, Art. Arsenic concentrations in three Palmer Lake sediment samples. Olympia, WA: Washington State Dept. of Ecology, 2002.

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Capítulos de livros sobre o assunto "Arsenic Environmental aspects Bangladesh"

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Shukla, Anurakti, e Sudhakar Srivastava. "Emerging Aspects of Bioremediation of Arsenic". In Green Technologies and Environmental Sustainability, 395–407. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-50654-8_17.

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Jones, Huw, Pornsawan Visoottiviseth, Md Khoda Bux, Rita Földényi, Nora Kováts, Gábor Borbély e Zoltán Galbács. "Case Reports: Arsenic Pollution in Thailand, Bangladesh, and Hungary". In Reviews of Environmental Contamination and Toxicology, 163–87. New York, NY: Springer New York, 2008. http://dx.doi.org/10.1007/978-0-387-79284-2_6.

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Hossain, Khaled, M. M. Hasibuzzaman e Seiichiro Himeno. "Characteristics and Health Effects of Arsenic Exposure in Bangladesh". In Current Topics in Environmental Health and Preventive Medicine, 43–60. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-2565-6_4.

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Caussy, Deoraj, e Nicholas D. Priest. "Introduction to Arsenic Contamination and Health Risk Assessment with Special Reference to Bangladesh". In Reviews of Environmental Contamination and Toxicology, 1–15. New York, NY: Springer New York, 2008. http://dx.doi.org/10.1007/978-0-387-79284-2_1.

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Thurow, K., A. Koch, N. Stoll e C. A. Haney. "General Approaches to The Analysis of Arsenic Containing Warfare Agents". In Environmental Aspects of Converting CW Facilities to Peaceful Purposes, 123–38. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0508-1_12.

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Schneider, John F., Don Johnson, Norbert Stoll, Kirsten Thurow, Andreas Koch e Klaus Thurow. "Portable X-Ray Fluorescence Analysis of a CW Facility Site for Arsenic Containing Warfare Agents". In Environmental Aspects of Converting CW Facilities to Peaceful Purposes, 139–47. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0508-1_13.

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Bencko, Vladimír. "Environmental & Human Health Aspects of Burning Arsenic Reach Coal Ecology Restoring Issues". In Implementing Ecological Integrity, 233–43. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-5876-3_15.

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Hoque, B., S. Khanam, M. Siddik, S. Huque, A. Rahman e M. Zahid. "Technological, social and policy aspects in Bangladesh arsenic mitigation and water supply: Connections and disconnections". In Arsenic in the Environment - Proceedings, 570–71. CRC Press, 2016. http://dx.doi.org/10.1201/b20466-265.

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Plant, Jane A., e Barry Smith. "Environmental Geochemistry on a Global Scale". In Geology and Health. Oxford University Press, 2003. http://dx.doi.org/10.1093/oso/9780195162042.003.0028.

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Recent population growth and economic development are extending the problems associated with land degradation, pollution, urbanization, and the effects of climate change over large areas of the earth’s surface, giving increasing cause for concern about the state of the environment. Many problems are most acute in tropical, equatorial, and desert regions where the surface environment is particularly fragile because of its long history of intense chemical weathering over geological timescales. The speed and scale of the impact of human activities are now so great that, according to some authors, for example, McMichael (1993), there is the threat of global ecological disruption. Concern that human activities are unsustainable has led to the report of the World Commission on Environment and Development Our Common Future (Barnaby 1987) and the establishment of a United Nations Commission on Sustainable Development responsible for carrying out Agenda 21, the action plan of the 1992 Earth Summit in Rio de Janeiro, Brazil. Considerable research into the global environment is now being undertaken, especially into issues such as climate change, biodiversity, and water quality. Relatively little work has been carried out on the sustainability of the Earth’s land surface and its life support systems, however, other than on an ad-hoc basis in response to problems such as mercury poisoning related to artisanal gold mining in Amazonia or arsenic poisoning as a result of water supply problems in Bangladesh (Smedley 1999). This chapter proposes a more strategic approach to understanding the distribution and behavior of chemicals in the environment based on the preparation of a global geochemical baseline to help to sustain the Earth’s land surface based on the systematic knowledge of its geochemistry. Geochemical data contain information directly relevant to economic and environmental decisions involving mineral exploration, extraction, and processing; manufacturing industries; agriculture and forestry; many aspects of human and animal health; waste disposal; and land-use planning. A database showing the spatial variations in the abundance of chemical elements over the Earth’s surface is, therefore, a key step in embracing all aspects of environmental geochemistry. Although environmental problems do not respect political boundaries, data from one part of the world may have important implications elsewhere.
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Ravenscroft, P. "Arsenic Pollution of Groundwater in Bangladesh". In Encyclopedia of Environmental Health, 169–80. Elsevier, 2011. http://dx.doi.org/10.1016/b978-0-444-63951-6.00347-8.

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Trabalhos de conferências sobre o assunto "Arsenic Environmental aspects Bangladesh"

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Versteeg, Roelof, Lex van Geen, Mike Steckler, Martin Stute, Yan Zheng, Steve Goodbred, Gail Heath e Kazi Matin Ahmed. "3D Mapping of Geology and Arsenic Using Integrated Geophysical and Geochemical Studies in Bangladesh". In Symposium on the Application of Geophysics to Engineering and Environmental Problems 2003. Environment and Engineering Geophysical Society, 2003. http://dx.doi.org/10.4133/1.2923167.

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Versteeg, Roelof, Lex van Geen, Mike Steckler, Martin Stute, Yan Zheng, Steve Goodbred, Gail Heath e Kazi Matin Ahmed. "3D Mapping Of Geology And Arsenic Using Integrated Geophysical And Geochemical Studies In Bangladesh". In 16th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems. European Association of Geoscientists & Engineers, 2003. http://dx.doi.org/10.3997/2214-4609-pdb.190.con09.

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Islam, S. M. A., K. Fukushi e K. Yamamoto. "Contamination of agricultural soil by arsenic containing irrigation water in Bangladesh: overview of status and a proposal for novel biological remediation". In ENVIRONMENTAL TOXICOLOGY 2006. Southampton, UK: WIT Press, 2006. http://dx.doi.org/10.2495/etox060301.

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Tarannum, T., N. Mirza e T. Ahmed. "Arsenic Removal Potential Using Naturally Occurring Iron in Groundwater: A Geo-Spatial Assessment of Household Potable Drinking Water in Bangladesh". In World Environmental and Water Resources Congress 2017. Reston, VA: American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480618.015.

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Islam, Md Zahidul, Walid-Bin-Habib e Md Sahil Hassan. "Environmental & health effects of nuclear radiation and various aspects of nuclear power plant in Bangladesh". In 2014 2nd International Conference on Green Energy and Technology (ICGET). IEEE, 2014. http://dx.doi.org/10.1109/icget.2014.6966664.

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Case, G. G., e R. L. Zelmer. "Comparative Experiences in Environmental Remediation of LLR Waste Sites in Diverse Canadian Environments". In ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4846.

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A variety of sites contaminated with legacy low-level radioactive (LLR) waste materials have been identified across Canada. Many of these sites, associated with former radium and uranium refining and processing operations, are located in urbanized areas of southern Ontario. However, other sites have been discovered at more remote locations in Canada, including northern Alberta and the Northwest Territories. The diversity of waste froms, ranging from pitchblende ore and processing wastes, to discarded luminescent products, combined with construction and transportation logistical issues encountered at these sites, present ongoing challenges for the Low-Level Radioactive Waste Management Office (LLRWMO) to overcome in meeting its mandate to resolve these legacy problems. Since its establishment in 1982, the federal government’s LLRWMO has operated programs to characterize and delineate contaminated historic waste sites across Canada. These programs have included undertaking property decontaminations, waste consolidation and interim storage projects at many sites, and participating with federal and provincial government departments and local communities to consider long-term storage and disposal opportunities. This paper compares four specific environmental remediation programs conducted by the LLRWMO within diverse Canadian settings found at Port Hope and Toronto (southern Ontario), Fort McMurray (northern Alberta), and Vancouver (west coast of British Columbia). Contaminant characterization and delineation, and remediation plan design and implementation aspects of these individual programs span the time period from the early 1980s through to 2002. The individual programs dealt with a variety of legacy waste forms that contained natural radioactive materials such as radium-226, total uranium, total thorium and thorium-230, as well as coincidental inorganic contaminants including arsenic, barium, cadmium, cobalt, lead, mercury, vanadium and zinc. Application of the lessons learned during these individual programs, as well as the development of new and innovative technologies to meet the specific needs of these programs, have enabled the LLRWMO to effectively and efficiently implement environmental remediation solutions that address the variety of Canada’s legacy LLR wastes.introduction.
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Pongpitukkul, Woraphat, Thotsaphon Chaianansutcharit, Suppakit Learduchasai, Thunyarak Suankaew e Satiraporn Sirisampan. "Tantawan Sludge Management: Holistic Approach Introducing New Practices". In International Petroleum Technology Conference. IPTC, 2021. http://dx.doi.org/10.2523/iptc-21331-ms.

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Abstract Following Tantawan field suspension of production, considerable volume of contaminated crude (high level of mercury and arsenic content) remains on board in Tantawan FPSO. These volumes are deemed as waste hydrocarbon sludge that hold no commercial value and must be urgently removed from the vessel as per safety requirements to maintain the vessel class and certification, according to Tantawan FPSO integrity condition. After review of many alternatives, offshore subsurface disposal initiative is the safest and most cost-effective means for disposal. Since subsurface disposal of such waste, highly mercury and arsenic contaminated crude, has never been performed in the Gulf of Thailand, several aspects need to be considered from technical and environmental perspective and public sector concerns. A cross functional team of Reservoir Engineer, Geologist, Facilities Engineer, Health and Safety, Policy, Government and Public Affair and commercial advisor, has co-devised a holistic waste management plan to inject waste into Tantawan reservoirs after obtaining required approvals by the government. Many challenges including limitation of the FPSO pumping system, sludge properties and seasonal increment weather, were encountered during the execution phase and many remedial actions were taken to mitigate their impact. Cross functional team initiatives on heater installation, adjusting injection procedure, and additional disposal well approval helped address project challenges. Entire volume of sludge was safely injected to subsurface reservoirs with cost effective operation. The success of this offshore injection process has reduced the cost to less than 10% compared to onshore disposal option to asset joint venture. The results set a new standard for Thailand petroleum waste management policy. Following this success, decommissioning of all remaining of Tantawan field are progressing as scheduled. This paper will outline the holistic approach of hydrocarbon sludge management process including the subsurface injection identifcation, stakeholder engagement, environmental impact assessment and execution challenges. Lessons learned from this paper would help other offshore operators to effectively manage hydrocarbon sludge, which demonstrate how the oil and gas industry plays a vital role in protecting the environment.
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