Helen Rowland, R. L. Pederick, David A. Polya, Richard D. Pancost et al.
ABSTRACT Microbes may play a key role in the mobilization of arsenic present in elevated concentrations within the aquifers extensively exploited for irrigation and drinking water in West Bengal, Bangladesh, and in other regions of South‐East Asia. Microcosm experiments using Cambodian sediments (wh...
Natalie Mladenov, Yan Zheng, Bailey Simone, Theresa M. Bilinski et al.
In some high arsenic (As) groundwater systems, correlations are observed between dissolved organic matter (DOM) and As concentrations, but in other systems, such relationships are absent. The role of labile DOM as the main driver of microbial reductive dissolution is not sufficient to explain the va...
Victoria S. Coker, Andrew G. Gault, Carolyn I. Pearce, G. van der Laan et al.
Poorly crystalline Fe(III) oxyhydroxides, ubiquitously distributed as mineral coatings and discrete particles in aquifer sediments, are well-known hosts of sedimentary As. Microbial reduction of these phases is widely thought to be responsible for the genesis of As-rich reducing groundwaters found i...
Case M. van Genuchten, Susan E.A. Addy, Jasquelin Peña, Ashok Gadgil
Electrocoagulation (EC) using iron electrodes is a promising arsenic removal strategy for Bangladesh groundwater drinking supplies. EC is based on the rapid in situ dissolution of a sacrificial Fe(0) anode to generate iron precipitates with a high arsenic sorption affinity. We used X-ray absorption ...
K. M. Mohiuddin, Kazuo Otomo, Yasumasa Ogawa, Naotatsu Shikazono
The Tsurumi, a class-one Japanese river, has a significant metal loading originating from urban environment. Water and sediment samples were collected from 20 sites in winter and summer, 2009 and were analyzed to determine and compare the extent of different trace element enrichment. A widely used f...
Alexander van Geen, Zhongqi Cheng, Ashraf Ali Seddique, M. A. Hoque et al.
A comparison of field and laboratory measurements of arsenic in groundwater of Araihazar, Bangladesh, indicates that the most widely used field kit correctly determined the status of 88% of 799 wells relative to the local standard of 50 microg/L As. Additional tests showthatthe inconsistencies, main...
M. Azizur Rahman, Hiroshi Hasegawa, Kazumasa Ueda, Teruya Maki et al.
Some unavoidable drawbacks of traditional technologies have made phytoremediation a promising alternative for removal of arsenic from contaminated soil and water. In the present study, the potential of an aquatic macrophyte Spirodela polyrhiza L. for phytofiltration of arsenic, and the mechanism of ...
Prosun Bhattacharya, Alan H. Welch, Kazi Matin Ahmed, Gunnar Jacks et al.
Qurban Ali Panhwar, Umme Aminun Naher, J. Shamshuddin, Radziah Othman et al.
A study was conducted to determine the total microbial population, the occurrence of growth promoting bacteria and their beneficial traits in acid sulfate soils. The mechanisms by which the bacteria enhance rice seedlings grown under high Al and low pH stress were investigated. Soils and rice root s...
Mohammad A. Halim, R. K. Majumder, Mohammad Nazim Zaman
Ratan Dhar, Yan Zheng, M. Stute, Alexander van Geen et al.
Samples were collected every 2-4 weeks from a set of 37 monitoring wells over a period of 2-3 years in Araihazar, Bangladesh, to evaluate the temporal variability of groundwater composition for As and other constituents. The monitoring wells are grouped in 6 nests and span the 5-91 m depth range. Co...
Jannatun Nahar Jannat, Md Sanjid Islam Khan, H. M. Touhidul Islam, Md. Saiful Islam et al.
Mohammad A. Halim, R. K. Majumder, Syeda Afsarun Nessa, Yoshinari Hiroshiro et al.
Geochemical composition and the level of Arsenic (As) contamination of groundwater in the Ganges Delta Plain, southwestern Bangladesh were elucidated. Hydrogeochemical data of tube well samples suggested that the groundwater is mostly Ca-Mg-HCO(3) type with bicarbonate (HCO(3)(-)) as the dominant an...
Hossain M. Anawar, Farjana Akter, Zakaria M. Solaiman, Vladimir Strezov
Golam Kibria, M.M. Hossain, Debbrota Mallick, Tai‐Chu Lau et al.
Using artificial mussels (AMs), this study reports and compares time-integrated level of eleven trace metals (Cd, Co, Cr, Cu, Fe, Hg, Mn, Ni, Pb, U, Zn) in Karnafuli River estuary and coastal area of the Bay of Bengal, Bangladesh. Through this study, "hot spots" of metal pollution were identified. T...