NATURAL ARSENIC IN GROUNDWATER: OCCURRENCE, REMEDIATION AND MANAGEMENT - CHAPTER 8 docx

... geochemical conditions (an oxidizing environment with neutral pH) that suggest significant immobilization by 73 -7 5 -7 0 -6 5 -6 0 -5 5 -5 0 -1 1 -7 δ 2 Η ‰ δ 18 Ο ‰ -1 0 -9 -8 y = 7.97x + 11.03 Figure 5. ␦ 18 O vs. ␦ 2 H ... hydrological system, (2) to investigate the source(s) of 67 Natural Arsenic in Groundwater: Occurrence, Remediation...

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... composition the water characterization in the aquifer of the study area fit into the three main types, viz. Na-(K)-Cl-SO 4 , Ca-(Mg)-Na-(K)-SO 4 and Ca-(Mg)-Na-(K)-HCO 3 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...

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... 2002). 2 ARSENIC AFFECTED FLOOD-DELTA PLAINS IN WEST BENGAL Pandemic arsenic contamination in the Bengal Basin is essentially confined to the low-lying Ganga-Brahmaputra flood-delta plain located ... Holocene entrenched floodplain in parts of lower-middle Gangetic plain in Bihar and eastern UP. Sediment cover on Pleistocene uplands in the Bengal Basin as well as, in interflu...

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... 1.92 1 .88 2.65 0. 08 0.12 18 0.46 17 .8 48. 74 14 .86 14 .85 1.13 5.36 1.14 1.05 3.26 0.22 0.15 80 1.49 20.5 70.03 11.95 4 .88 0.67 1.74 2.43 1.90 2.39 0.09 0.14 15 0.44 21.5 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 0.70 37.1 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....

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... 409.4 397 .8 97. 18 2.05 0.01 N-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 0.07 N-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 0.32 N-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 0.09 N-4 27.5 38 83.624 15.2 6 .85 Ϫ0.159 427 3...

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... local drinking water standard of 50␮g/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. Hidro...

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... 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-Dha...

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... nutrient recycling process. This is obviously a major concern vis-a-vis soil pollution 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 deep 119 Natural Arsenic in Groundwater: Occurrence, Remediation and...

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... 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 plan...

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... ϽϪ0.254 1.55 Similarity HCO 3 - CI - Na + NO - 3 Mn Fe tot PO 4 3- K + pH SO 4 2- Mg 2+ Ca 2+ EC As tot 0 -1 00 -2 00 -3 00 -4 00 -5 00 -6 00 -7 00 -8 00 123456 78 91011121314 Figure 5. Results of Hierarchical ... precipitation of secondary sulfide minerals like mackinawite. This mineral is a precursor of pyrite and may incorporate some arsenic,...

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