title: Isolation and characterization of arsenic-resistant bacteria and possible application in bioremediation.
abstract: Ground water arsenic contamination is a widespread problem in many developing countries including Bangladesh and India. In recent years development of modern innovative technologies for the removal of arsenic from aqueous system has become an interesting topic for research. In this present study, two rod shaped Gram-positive bacteria are being reported, isolated from arsenic affected ground water of Purbasthali block of Burdwan, West Bengal, India, which can tolerate arsenate concentration up to 4500 ppm and 550 ppm of arsenite concentration. From biochemical analysis and 16S rRNA sequencing, they were identified asBacillussp. andAneurinibacillus aneurinilyticusrespectively. The isolates SW2 and SW4 can remove 51.45% and 51.99% of arsenite and 53.29% and 50.37% of arsenate, respectively from arsenic containing culture media. Both of the isolate can oxidize arsenite to less toxic arsenate. These two arsenic resistant bacteria can be used as a novel pathway for the bioremediation of arsenic.
authors.affiliation: Environmental Chemistry Laboratory, Department of Environmental Science, The University of Burdwan, Burdwan 713104, India.
authors.forename: Uttiya
authors.initials: U
authors.lastname: Dey
authors.affiliation: Parasitology and Microbiology Laboratory, Department of Zoology, The University of Burdwan, Burdwan 713104, India.
authors.forename: Soumendranath
authors.initials: S
authors.lastname: Chatterjee
authors.affiliation: Environmental Chemistry Laboratory, Department of Environmental Science, The University of Burdwan, Burdwan 713104, India.
authors.forename: Naba Kumar
authors.initials: NK
authors.lastname: Mondal
keywords: Arsenic; Arsenic resistant bacteria; Bioremediation; Purbasthali