NATURAL ARSENIC IN GROUNDWATER: OCCURRENCE, REMEDIATION AND MANAGEMENT - CHAPTER 8 docx
NATURAL ARSENIC IN GROUNDWATER: OCCURRENCE, REMEDIATION AND MANAGEMENT - CHAPTER 8 docx
... geochemicalconditions (an oxidizing environment with neutral pH) that suggest significant immobilization by73 -7 5 -7 0 -6 5 -6 0 -5 5 -5 0 -1 1 -7 δ2Η ‰δ 18 Ο ‰ -1 0 -9 -8 y = 7.97x + 11.03Figure 5. ␦ 18 O vs. ␦2H ... hydrological system, (2) to investigate the source(s) of67 Natural Arsenic in Groundwater: Occurrence, Remediation and Management – Bundschuh, Bhattacharya and Chandrasekharam (eds)© 2005, ... geochemistry is domin-ated by Ca, Mg, and HCO3, as expected for waters interacting with carbonate rocks and/ or cal-cium-rich soils.High concentrations of Cl, K, Na, NO3-N, and SO4, and high electrical...
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NATURAL ARSENIC IN GROUNDWATER: OCCURRENCE, REMEDIATION AND MANAGEMENT - CHAPTER 10 docx
... composition the water characterization in theaquifer of the study area fit into the three main types, viz. Na-(K)-Cl-SO4, Ca-(Mg)-Na-(K)-SO4 and Ca-(Mg)-Na-(K)-HCO3 das reported by the earlier ... which high levels of arsenic were obtained in the soils collected 85 Natural Arsenic in Groundwater: Occurrence, Remediation and Management – Bundschuh, Bhattacharya and Chandrasekharam (eds)© ... con-centration of the water resources of the aquifers in these communities. The result indicates a min-imum of 0.04 mg/L obtained in the wells of Akinbo and a maximum of 0.16mg/L obtained in...
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NATURAL ARSENIC IN GROUNDWATER: OCCURRENCE, REMEDIATION AND MANAGEMENT - CHAPTER 2 pptx
... 2002).2 ARSENIC AFFECTED FLOOD-DELTA PLAINS IN WEST BENGALPandemic arsenic contamination in the Bengal Basin is essentially confined to the low-lyingGanga-Brahmaputra flood-delta plain located ... Holoceneentrenched floodplain in parts of lower-middle Gangetic plain in Bihar and eastern UP. Sedimentcover on Pleistocene uplands in the Bengal Basin as well as, in interfluve uplands in lower-middleparts ... Jharkhand and eastern UttarPradesh (UP; Fig. 1). The upper permissible limit of arsenic in potable water is set at 50g/L in 17 Natural Arsenic in Groundwater: Occurrence, Remediation and Management...
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NATURAL ARSENIC IN GROUNDWATER: OCCURRENCE, REMEDIATION AND MANAGEMENT - CHAPTER 4 doc
... 1.92 1 .88 2.65 0. 08 0.12 18 0.4617 .8 48. 74 14 .86 14 .85 1.13 5.36 1.14 1.05 3.26 0.22 0.15 80 1.4920.5 70.03 11.95 4 .88 0.67 1.74 2.43 1.90 2.39 0.09 0.14 15 0.4421.5 62.15 15.96 6.96 0 .81 2.65 ... 56. 18 18. 39 7 .83 0 .81 2.92 0.99 1.20 3. 38 0.11 0.10 83 0.7037.1 69.75 11.63 5.11 0.66 1.69 2.22 1 .86 2.40 0.09 0.14 13 n.a**37.1 58. 71 16 .81 7.17 0 .80 2 .84 1.32 1.42 3.27 0.12 0.10 59 0.73 38. 0 ... oxyhydroxides noticed in the fine clastic sediments (Ahmed et al. 2001).31 Natural Arsenic in Groundwater: Occurrence, Remediation and Management – Bundschuh, Bhattacharya and Chandrasekharam (eds)©...
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NATURAL ARSENIC IN GROUNDWATER: OCCURRENCE, REMEDIATION AND MANAGEMENT - CHAPTER 5 doc
... 409.4 397 .8 97. 18 2.05 0.01N-10 27.537 83 .691 19 .8 7.40 Ϫ0.129 4 28 11.0 1.3 2.5 53.3 1.7 32.1 69.0 25.5 0.6 385 .1 303 .8 78. 88 0. 78 0.07N-11 27.5 28 83. 688 16 .8 6.50 Ϫ0.141 465 1.4 0.1 2 .8 36.4 ... 80 .81 0.11 0.32N-3 27.520 83 .674 13.7 7.36 Ϫ0.149 332 0 .8 bdl bdl 11 .8 1.1 14.5 93.5 28. 1 0.2 20.0 19.0 95.12 1.94 0.09N-4 27.5 38 83.624 15.2 6 .85 Ϫ0.159 427 32.0 bdl 0.4 38. 1 1.6 29.1 89 .8 ... 36 .8 1.4 20.7 84 .8 17.7 1.2 91 .8 87.9 95.76 1.73 0. 08 N-24 27.607 83 .646 54.9 7.12 Ϫ0.144 381 0.6 0.1 1.3 23.5 2.0 21.6 86 .4 15.3 0.1 11.1 10.2 91.90 1.23 0.24N-25 27.597 83 .649 10.7 6 .80 Ϫ0. 188 ...
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NATURAL ARSENIC IN GROUNDWATER: OCCURRENCE, REMEDIATION AND MANAGEMENT - CHAPTER 7 pptx
... local drinking water standard of 50g/L. The first symptoms of arsenic related diseases were detected in 1 983 within the counties of La Banda and Robles, and in the fol-lowing year investigations ... pat-terns and remediation with natural materials. Master Thesis, Dept. of Land and Wat. Res. Eng., KTH,Stockholm, Sweden, TRITA-LWR-EX-0 3-0 5, 59p.Martin, A. 1999. Hidrogeologia de la provincia ... oxalateclearly indicated dominance of Al- and Mn-oxides and -hydroxides as compared to Fe-oxides and hydroxides (Fig. 6). Much higher concentrations at site CH47 seem to be related to the preferen-tial...
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NATURAL ARSENIC IN GROUNDWATER: OCCURRENCE, REMEDIATION AND MANAGEMENT - CHAPTER 11 pot
... 95 Natural Arsenic in Groundwater: Occurrence, Remediation and Management – Bundschuh, Bhattacharya and Chandrasekharam (eds)© 2005, Taylor & Francis Group, London, ISBN 04 1536 700 X Arsenic ... possible contamination from arsenic through the food chain. In Groundwater Arsenic Contamination in the Bengal Delta Plains of Bangladesh(Proceedings of the KTH-Dhaka University Seminar, University ... Bhattacharya, and AA Khan KTH Special Publication, TRITA-AMI Report 3 084 , ISSN 14001306,ISRN KTH/AMI/REPORT 3 084 -SE, ISBN 9 1-7 28 3-0 76-X, ©2001, KTH, pp. 91–96.Huq, S.M.I. & Naidu, R. 2003. Arsenic in...
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NATURAL ARSENIC IN GROUNDWATER: OCCURRENCE, REMEDIATION AND MANAGEMENT - CHAPTER 14 pptx
... nutrient recycling process. This is obviously a major concern vis-a-vis soilpollution and contamination of the food chain through water-soil-crop transfer of contaminants.This demands special ... irrigation facil-ities and more than 60% of this irrigation water come from groundwater which is extracted by deep119 Natural Arsenic in Groundwater: Occurrence, Remediation and Management – Bundschuh, ... phases of incubation(Fig. 2). It is apparent that the algae growing on As-contaminated water and bioaccumulating itsubsequently released the element in soil during the process of mineralization....
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NATURAL ARSENIC IN GROUNDWATER: OCCURRENCE, REMEDIATION AND MANAGEMENT - CHAPTER 15 ppsx
... Settling of As-rich smelter particulates, wind dispersion of solid tailings, and leachate run-off from tailings has contaminated soils around smelters and tailings. In addition, natural subsur-face ... Zimapán inhabitants.6 CONCLUSIONS Arsenic is widely distributed in Zimapán. Mining wastes and natural arsenic- bearing mineraliza-tion release As to water, soils and plants. Geochemical processes ... increases in the mine area, reaching 51 48 mg/kg (García et al. 2001). Arsenic is mainly associated with Fe and Mn oxyhydroxides and residual fractions in sediments. Arsenopyritewas identified in As-rich...
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NATURAL ARSENIC IN GROUNDWATER: OCCURRENCE, REMEDIATION AND MANAGEMENT - CHAPTER 16 pptx
... ϽϪ0.254 1.55SimilarityHCO3 - CI - Na+NO - 3MnFetotPO4 3- K+pHSO4 2- Mg2+Ca2+ECAstot0 -1 00 -2 00 -3 00 -4 00 -5 00 -6 00 -7 00 -8 00123456 78 91011121314Figure 5. Results of Hierarchical ... precipitation of secondary sulfide minerals like mackinawite. This mineralis a precursor of pyrite and may incorporate some arsenic, acting as a sink for arsenic in ground-water where sulfate reduction ... Occurrence of arsenic contaminated groundwater in allu-vial aquifers from Delta Plains, Eastern India: Options for safe drinking water supply. Int Jour. Water Res. Management 13(1): 79 82 .Bhattacharya,...
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