Reduction of Chromium (VI) by indigenous bacteria isolated from industrial effluents of Pakistan:

Sabeen  Sabri; Rida  Batool; Muhammad Shoaib  Akhtar

doi:10.54692/lgujls.2022.0603225

Sabeen Sabri Department of Microbiology and Molecular Genetics, Faculty of Life Sciences, University of Okara, Okara 56130 Pakistan
Rida Batool Institute of Microbiology and Molecular Genetics, University of the Punjab, Lahore, Pakistan
Muhammad Shoaib Akhtar Institute of Microbiology and Molecular Genetics, University of the Punjab, Lahore, Pakistan

DOI: https://doi.org/10.54692/lgujls.2022.0603225

Keywords: Sewage Water, Reduction Potential, Chromium VI, Heavy Metal Bacteria

Abstract

The present study was aimed to isolate and examine the reduction potential of chromium resistant bacteria. For this purpose, 10 chromium resistant bacterial strains were isolated from three different samples, collected from effluents of industries. These isolated strains were designated as A, B1, B2, C, L1, L2, L3, M, I1, and I2. All strains were able to resist up to 3500 μg/ml of potassium chromate on Lagar. At optimum pH 7 and temperature 37 ℃, all isolated strains showed optimum reduction potential. The strain B1 and L3 showed 97% reduction potential in DE broth while B1 in L-broth and I2 in acetate minimal broth showed 98% and 97% reduction potential respectively. In the case of artificial sewage water, strain M and L2 showed 94% reduction potential. In sample-1 of domestic sewage water (sterile), B2 showed 94% while I2 (non-sterile) had maximum reduction potential. Sample-2 (A, C, L2, I1) from domestic sewage water (non-sterile) had 96% and A, C, L2, I1 (sterile) also showed a 96% maximum reduction potential.

Reduction of Chromium (VI) by indigenous bacteria isolated from industrial effluents of Pakistan

Sabeen Sabri, Rida Batool, Muhammad Shoaib Akhtar

Abstract