Isolation and characterization of Bacillus cereus IST105 from electroplating effluent for detoxification of hexavalent chromium

Abstract

Isolated strain B. cereus was able to remove and detoxify chromium (VI). It would be an efficient tool of the biotechnological approach in mitigating the heavy metal pollutants.

Response Surface Modeling for Co-Remediation of Cr6+and Pentachlorophenol byBacillus cereusRMLAU1: Bioreactor Trial and Structural and Functional Characterization by SEM-EDS and FT-IR Analyses

“…MC1 cells by SEM; EDX showed the presence of Cr peak in exposed cells, but it is absent in unexposed control cells. Likewise, Naik, Srivastava, and Thakur (2012) reported morphological changes in treated B. cereus cells (small, round-shaped with uneven edges on the cell wall), and there was a peak of chromium observed in EDX. They asserted that the change in cell shape due to heavy metal exposure is an adopted mechanism to resist the toxicity of heavy metals.…”

“…In our study, the functional groups such as hydroxyl, phosphate, and amide might be responsible for absorption of reduced Cr 3C in the form of Cr (OH) 3 or CrPO 4 . Naik, Srivastava, and Thakur (2012) also reported the role of carboxyl, phosphate, and amide groups for the absorption of chromium.…”

Evaluation of cyanobacterial endolith Leptolyngbya sp. ISTCY101, for integrated wastewater treatment and biodiesel production: A toxicological perspective

“…The process was carried out according to [18]. Energy dispersive X-ray analysis (EDAX, USA) was done in order to confirm the role of cyanobacterial EPS in metal chelation.…”

Potential of Staphylococcus xylosus strain for recovering nickel ions from aqueous solutions

“…This might be due to the over production of exopolysaccharide (EPS) by the bacterial cells which is one of the mechanism used to resist the metal ions toxicity. Naik et al [6] indicated that B. cereus which has high ability to tolerate Cr 3+ exhibited more than 75 % of Cr 3+ removal. Moreover, understand the response of bacterial cells to the environmental factors represent the critical step to find a more suitable bacterial strain with high efficiency to remove heavy metals.…”