Efficacy of indigenous soil microbes in arsenic mitigation from contaminated alluvial soil of India

• Published in: Environmental science and pollution research international 2013-08, Vol.20 (8), p.5645-5653
• Main Authors: Majumder, Aparajita, Bhattacharyya, Kallol, Kole, S. C., Ghosh, Sagarmoy
• Format: Article
• Language: English
• Subjects: Aerobic conditions; Aerobiosis; Alluvial soils; Anaerobic conditions; Anaerobiosis; Animal manures; Aquatic Pollution; Arsenates - metabolism; Arsenic; Arsenic - metabolism; Arsenic - toxicity; Arsenic content; Arsenicals; Arsenites - metabolism; Atmospheric Protection/Air Quality Control/Air Pollution; Bacteria; Bacteria - drug effects; Bacteria - genetics; Bacteria - metabolism; Biodegradation, Environmental; Bioremediation; Contamination; DNA methylation; Earth and Environmental Science; Ecotoxicology; Effectiveness; Environment; Environmental Chemistry; Environmental Health; Genetically modified organisms; India; Microbial Sensitivity Tests; Microorganisms; Nitrates; Organisms; Research Article; RNA, Bacterial - genetics; RNA, Ribosomal, 16S - genetics; Sequence Analysis, RNA; Soil (material); Soil bacteria; Soil contaminants; Soil contamination; Soil Microbiology; Soil microorganisms; Soil Pollutants - metabolism; Soil Pollutants - toxicity; Studies; Toxicity; Volatilization; Waste Water Technology; Water Management; Water Pollution Control
• ISSN: 0944-1344; 1614-7499
• DOI: 10.1007/s11356-013-1560-x

Selected arsenic-volatilizing indigenous soil bacteria were isolated and their ability to form volatile arsenicals from toxic inorganic arsenic was assessed. Approximately 37 % of AsIII (under aerobic conditions) and 30 % AsV (under anaerobic conditions) were volatilized by new bacterial isolates in 3 days. In contrast to genetically modified organism, indigenous soil bacteria was capable of removing 16 % of arsenic from contaminated soil during 60 days incubation period while applied with a low-cost organic nutrient supplement (farm yard manure).