Bioreduction of hexavalent chromium by Pseudomonas stutzeri L1 and Acinetobacter baumannii L2

被引：0
作者：
Kuppusamy Sathishkumar
Kadarkarai Murugan
Giovanni Benelli
Akon Higuchi
Aruliah Rajasekar
机构：
[1] Thiruvalluvar University,Department of Biotechnology, Environmental Molecular Microbiology Research Laboratory
[2] Bharathiar University,Division of Entomology, Department of Zoology, School of Life Sciences
[3] Thiruvalluvar University,Department of Agriculture, Food and Environment
[4] University of Pisa,Department of Chemical and Materials Engineering
[5] National Central University,undefined
来源：
Annals of Microbiology | 2017年 / 67卷
关键词：
Hexavalent chromium; Diphenylcarbazide; Bioremediation; Trivalent chromium;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Bioreduction of the very toxic hexavalent chromium ion [Cr(VI)] to the non-toxic trivalent chromium ion [Cr(III)] is a key remediation process in chromium-contaminated sites. In this study, we investigated the bioreduction of Cr(VI) by Pseudomonas stutzeri L1 and Acinetobacter baumannii L2. The optimum pH (5–10), temperature (27, 37 and 60 °C) and initial chromium Cr(VI) concentration (100–1000 mg L−1) for Cr(VI) reduction by strains L1 and L2 were determined using the diphenylcarbazide method. In the presence of L1 and L2, the bioreduction rate of Cr(VI) was 40–97 and 84–99%, respectively. The bioreduction of Cr(VI) by L2 was higher, reaching up to 84%—than that by L1. The results showed that strain L2 was able to survive even if exposed to 1000 mg L−1 of Cr(VI) and that this tolerance to the effects of Cr(VI) was linked to the activity of soluble enzyme fractions. Overall, A. baumannii L2 would appear to be a potent Cr(VI)-tolerant candidate for the bioremediation of chromium (VI)-contaminated wastewater effluent.
引用
收藏
页码：91 / 98
页数：7
相关论文
共 119 条
  • [31] Rastogi A(2004)Stimulation of microbially mediated chromate reduction in alkaline soil water systems Appl Environ Microbiol 70 5595-5602
  • [32] Kamaludeen SPB(2009)High chromium tolerant bacterial strains from Palar River Basin: impact of tannery pollution J Environ Sci 21 814-820
  • [33] Megharaj M(2003)Reduction of chromate by cell-free extract of Plant Soil 249 139-156
  • [34] Naidu R(undefined) sp. isolated from Cr(VI) contaminated sites undefined undefined undefined-undefined
  • [35] Singleton I(undefined)Fe(III), Cr(VI), and Fe(III) mediated Cr(VI) reduction in alkaline media using a undefined undefined undefined-undefined
  • [36] Juhasz AL(undefined) isolate from Soap Lake, Washington undefined undefined undefined-undefined
  • [37] Hawke BG(undefined)The impact of chromium contamination on soil heterotrophic and photosynthetic microorganisms undefined undefined undefined-undefined
  • [38] Sethunanthan N(undefined)Characterization of cultivable heterotrophic bacterial communities in Cr-polluted and unpolluted soils using biolog and ARDRA approaches undefined undefined undefined-undefined
  • [39] McLean J(undefined)Characterization of Cr (VI) resistant bacteria isolated from chromium contaminated soil by tannery activity undefined undefined undefined-undefined
  • [40] Beveridge TJ(undefined)Chromium(VI) reduction by undefined undefined undefined-undefined
12345678910