Natural Arsenic in Groundwater: Proceedings of the Pre-Congress Workshop "Natural Arsenic in Groundwater", 32nd International Geological Congress, Florence, Italy, 18-19 August 2004

Book Cover......Page 1
Title......Page 4
Copyright......Page 5
Table of Contents......Page 6
Preface......Page 10
List of Contributors......Page 12
Section 1: Arsenic occurrence and genesis in sedimentary and hard-rock aquifers......Page 18
Arsenic in groundwater of the Bengal Delta Plain: geochemical evidences for small scale redox zonation in the aquifer......Page 20
Genesis of arsenic contamination of groundwater in alluvial Gangetic aquifer in India......Page 34
Arsenic pollution in groundwater of West Bengal, India: Where we stand?......Page 42
Mineralogical characteristics of the Meghna floodplain sediments and arsenic enrichment in groundwater......Page 48
Naturally occurring arsenic in groundwater of Terai region in Nepal and mitigation options......Page 58
High arsenic concentrations in mining waters at Kan k, Czech Republic......Page 66
Natural arsenic in the groundwater of the alluvial aquifers of Santiago del Estero Province, Argentina......Page 74
Arsenic source and fate at a village drinking water supply in Mexico and its relationship to sewage contamination......Page 84
Arsenic contamination of the Salamanca aquifer system in Mexico: a risk analysis......Page 94
Arsenic pollution in aquifers located within limestone areas of Ogun State, Nigeria......Page 102
Section 2: Environmental health assessment-arsenic in the food chain......Page 110
Arsenic in groundwater and contamination of the food chain: Bangladesh scenario......Page 112
Arsenic contamination in groundwater in Nepal: a new perspective and more health threat in South Asia......Page 120
Estimating previous exposure to arsenic for populations living in parts of Hungary, Romania and Slovakia......Page 126
Arsenic bioaccumulation in a green algae and its subsequent recycling in soils of Bangladesh......Page 136
Environmental behavior of arsenic in a mining zone: Zimapán, Mexico......Page 142
Section 3: Arsenic biogeochemistry in groundwater......Page 148
Natural enrichment of arsenic in groundwaters of Brahmanbaria district, Bangladesh: geochemistry, speciation modeling and multivariate statistics......Page 150
Microbial processes and arsenic mobilization in mine tailings and shallow aquifers......Page 162
Geochemistry and geomicrobiology of arsenic in Holocene alluvial aquifers, USA......Page 172
Arsenic contamination in drinking water of tube wells in Bangladesh: statistical analysis and associated factors......Page 180
The impact of low dissolved oxygen in recharge water on arsenic pollution in groundwater of Bangladesh......Page 190
Section 4: Remediation of arsenic-rich groundwaters......Page 204
Technologies for arsenic removal from potable water......Page 206
Natural enrichment of arsenic in a minerotrophic peatland (Gola di Lago, Canton Ticino, Switzerland), and implications for the treatment of contaminated waters......Page 222
A comparative study for the removal of As(III) and As(V) by activated alumina......Page 228
Comparing the arsenic sorption capacity of Bauxsol™ and its derivatives with other sorbents......Page 240
Optimization of the removal of arsenic from groundwater using ion exchange......Page 254
Sorption of arsenic on sorghum biomass: a case study......Page 264
Removal and recovery of arsenic from aqueous solutions by sorghum biomass......Page 272
Optimisation of iron removal units to include arsenic removal......Page 280
A simple and environmentally safe process for arsenic remediation – laboratory and field evaluation......Page 290
Section 5: Management of arsenic-rich groundwaters......Page 298
Management of the groundwater arsenic disaster in Bangladesh......Page 300
Strengthening water examination system in Bangladesh......Page 314
Implementation of safe drinking water supplies in Bangladesh......Page 324
Sustainable safe water options in Bangladesh: experiences from the Arsenic Project at Matlab (AsMat)......Page 336
Prerequisite studies for numerical flow modeling to locate safe drinking water wells in the zone of arsenic polluted groundwater in the Yamuna sub-basin, West Bengal, India......Page 348
Author Index......Page 356