Brian J. Mailloux, Ekaterina Alexandrova, Alison R. Keimowitz, Karen Wovkulich et al.
Tens of millions of people in Southeast Asia drink groundwater contaminated with naturally occurring arsenic. How arsenic is released from the sediment into the water remains poorly understood. Here, we show in laboratory experiments that phosphate-limited cells of Burkholderia fungorum mobilize anc...
Jianying Yang, Xiangliang Pan, Chenxi Zhao, Shuyong Mou et al.
Heavy metal contamination of mine tailings is one of the most serious environmental challenges facing the mining industry worldwide. Conventional technologies used for the treatment of such tailing soils are expensive both in terms of operation and capital costs as well as being not so effective. In...
James A. Saunders, M.-K. Lee, Mohammad Shamsudduha, Prakash Dhakal et al.
Mohammad A. Halim, R. K. Majumder, Syeda Afsarun Nessa, Yoshinari Hiroshiro et al.
Forty-six deep groundwater samples from highly arsenic affected areas in Bangladesh were analyzed in order to evaluate the processes controlling geochemical constituents in the deep aquifer system. Spatial trends of solutes, geochemical modeling and principal component analysis indicate that carbona...
Samantha C. Ying, Michael Schaefer, Alicea Cock-Esteb, Jun Li et al.
Providing access to safe drinking water is a global challenge, for which groundwater is increasingly being used throughout the world. However, geogenic contaminants limit the suitability of groundwater for domestic purposes over large geographic areas across most continents. Geogenic contaminants in...
Mattias von Brömssen, Sara Häller Larsson, Prosun Bhattacharya, Mahmudul Hasan et al.
High arsenic (As) concentrations in groundwater pose a serious threat to the health of millions of people in Bangladesh. Reductive dissolution of Fe(III)-oxyhydroxides and release of its adsorbed As is considered to be the principal mechanism responsible for mobilisation of As. The distribution of A...
Helen Rowland, Christopher Boothman, Richard D. Pancost, Andrew G. Gault et al.
High levels of naturally occurring arsenic are found in the shallow reducing aquifers of West Bengal, Bangladesh, and other areas of Southeast Asia. These aquifers are used extensively for drinking water and irrigation by the local population. Mechanisms for its release are unclear, although increas...
Qurban Ali Panhwar, J. Shamshuddin, Umme Aminun Naher, Radziah Othman et al.
A study was conducted at Universiti Putra Malaysia to determine the effect of phosphate-solubilizing bacteria (PSB) and organic acids (oxalic & malic) on phosphate (P) solubilization from phosphate rock (PR) and growth of aerobic rice. Four rates of each organic acid (0, 10, 20, and 30 mM), and PSB ...
M. Farhad Howladar
Adam P. Hitchcock, Martin Obst, Jian Wang, Yingshen Lu et al.
Speciation and quantitative mapping of elements, organic and inorganic compounds, and mineral phases in environmental samples at high spatial resolution is needed in many areas of geobiochemistry and environmental science. Scanning transmission X-ray microscopes (STXMs) provide a focused beam which ...
A. K. M. E. Islam, E. G. Lotse
Abstract Fine clay, coarse clay, and silt fractions of four Bangladesh soils were studied using XRD, ion exchange, and selective dissolution techniques. Constants for the XRD intensity-weight proportion relationships were derived using these techniques. Smectite and mica were found to be dominant in...
Rebecca B. Neumann, Lara E. Pracht, Matthew L. Polizzotto, A. B. M. Badruzzaman et al.
Laboratory incubations of sediment collected from an arsenic-contaminated aquifer in Bangladesh revealed a hitherto undocumented pool of biodegradable sedimentary organic carbon. Sampling, homogenizing, handling, and/or experimentation with the sediment released organic carbon, causing dissolved org...
Baohua Li, Xiangliang Pan, Daoyong Zhang, Duu‐Jong Lee et al.
Md. Rafiqul Islam, M. Jahiruddin, Shofiqul Islam
Satinder Ahuja
Contributors. Preface. 1. Problems and Solutions of Arsenic Contamination of Groundwater (Satinder Ahuja). 2. Fate of Arsenic in Irrigation Water and its Potential Impact on the Food Chain (S.M. Imamul Huq). 3. Microbial Controls on the Geochemical Behavior of Arsenic in Groundwater Systems (Farhana...