Cr (III) bioremoval capacities of indigenous and adapted bacterial strains from Palar river basin

Sundar, Krishnan; Mukherjee, Amitava; Sadiq, Mohammed; Chandrasekaran, N.

doi:10.1016/j.jhazmat.2011.01.077

Cited by 48 publications

(19 citation statements)

References 26 publications

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“…Ozturk et al (2008) reported that there was significant toxic effect by Cr(VI) and reduced EPS production by M. mesophilicum up to 12 h. In this study, an increase in EPS production was observed due to the high tolerance of the indigenous mine isolate to Cr(VI). In a related work with tanning industry isolates, a similar increase in EPS production with increase in chromium concentration has been reported (Sundar et al 2011).…”

Section: Quantification Of Eps At Different Chromium Concentrationsupporting

confidence: 74%

“…The vital role of EPS along with the cell in the adsorption and reduction of chromium has been noted recently (Ozturk et al 2009;Sheng et al 2010;Quintelas et al 2011). A detailed study on bio-removal of chromium by indigenous bacterial isolates from tannery polluted places has also been reported (Sundar et al 2011).…”

Section: Introductionmentioning

confidence: 93%

“…Quintelas et al (2007) has also reported the polysaccharide production of three different strains namely Bacillus coagulans (CECT 12), Streptococcus equisimilis (CECT 926) and Escherichia coli (CECT 515) to be 9.19, 7.24 and 4.77 mg/g of biosorbent. A recent study (Sundar et al 2011) shows the production of EPS with concentrations ranging from 0.059 to 0.063 mg/ml by chromium resistant strains isolated from chromium polluted tannery site in Vellore, India.…”

Section: Extraction and Quantification Of Epsmentioning

confidence: 99%

“…These results show that EPS played a specific role in Cr(VI) reduction. There are a few reports stating the reduction of Cr(VI) by various indigenous isolates stressing the role of biosorption (Rege et al 1997;Wei-hua et al 2009;Sethuraman and Balasubramanian 2010;Sundar et al 2011). This …”

Section: Cr(vi) Reduction By Extracted Epsmentioning

confidence: 99%

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Bio-reduction of Cr(VI) by exopolysaccharides (EPS) from indigenous bacterial species of Sukinda chromite mine, India

et al. 2011

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Chrome mining activity has contributed intensively towards pollution of hexavalent chromium around Sukinda Valley, Orissa, India. In an attempt to study the specific contribution of exopolysaccharides (EPS) extracted from indigenous isolates towards Cr(VI) reduction, three chromium (VI) tolerant strains were isolated from the effluent mining sludge. Based on the tolerance towards Cr(VI) and EPS production capacity, one of them was selected for further work. The taxonomic identity of the selected strain was confirmed to be Enterobacter cloacae (showing 98% similarity in BLAST search to E. cloacae) through 16S rRNA analysis. The EPS production was observed to increase with increasing Cr(VI) concentration in the growth medium, highest being 0.078 at 100 mg/l Cr(VI). The extracted EPS from Enterobacter cloacae SUKCr1D was able to reduce 31.7% of Cr(VI) at 10 mg/l concentration, which was relevant to the prevailing natural concentrations at Sukinda mine effluent sludge. The FT-IR spectral studies confirmed the surface chemical interactions of hexavalent chromium with EPS.

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Section: Quantification Of Eps At Different Chromium Concentrationsupporting

confidence: 74%

Section: Introductionmentioning

confidence: 93%

Section: Extraction and Quantification Of Epsmentioning

confidence: 99%

Section: Cr(vi) Reduction By Extracted Epsmentioning

confidence: 99%

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Bio-reduction of Cr(VI) by exopolysaccharides (EPS) from indigenous bacterial species of Sukinda chromite mine, India

et al. 2011

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“…The bacterial strains isolated from heavy metal contaminated wastewater might occur more potential to resist and remove the metal ions compared to that obtained from noncontaminated area even if both strains are classified within the same species [3,4]. Sundar et al [5] revealed that the potential of B. subtilis to remove Cr 3+ ions improved effectively after the acclimatization to high concentrations of Cr 3+ . The removal percentage increased from 64 to 85 %.…”

Section: Introductionmentioning

confidence: 99%