Biosorption of heavy metals by Pseudomonas species isolated from sugar industry

Toxicology and Industrial Health
Tayyaba NazMuhammad Jamil

Abstract

Heavy metal-resistant bacteria can be efficient bioremediators of metals and may provide an alternative or additional method to conventional methods of metal removal. In this study, 10 bacterial isolates were isolated from soil samples of a sugar industry, located at Peshawar, Pakistan. Morphological, physiological, and biochemical characteristics of these isolates were observed. Sequence analysis (16S ribosomal RNA) revealed that isolated strains were closely related to the species belonging to the genera Pseudomonas, Arthrobacter, Exiguobacterium, Citrobacter, and Enterobacter Bacterial isolates were resistant with a minimum inhibitory concentration (500-900 ppm) to lead ion (Pb(2+)), (500-600 ppm) nickel ion (Ni(2+)), (500-800 ppm) copper ion (Cu(2+)), and (600-800 ppm) chromium ion (Cr(3+)) in solid media. Furthermore, biosorption of metals proved considerable removal of heavy metals by isolated metal-resistant strains. Pseudomonas sp. reduced 37% (Pb(2+)), 32% (Ni(2+)), 29% (Cu(2+)), and 32% (Cr(3+)) and was thus found to be most effective, whereas Enterobacter sp. reduced 19% (Pb(2+)), 7% (Ni(2+)), 14% (Cu(2+)), and 21% (Cr(3+)) and was found to be least effective. While average reduction of Pb(2+), Ni(2+), Cu(2+), and Cr...Continue Reading

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Citations

Mar 26, 2016·Frontiers in Plant Science·Kareem A MosaOm Parkash Dhankher
May 26, 2018·Journal of Hazardous Materials·Erin K FieldRobin Gerlach
Feb 18, 2020·Ecotoxicology and Environmental Safety·Xuemin WeiJianping Han
Nov 21, 2021·The Science of the Total Environment·Muhammad Usama SaeedHafiz M N Iqbal

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Methods Mentioned

BETA
PCR
bioremediation

Software Mentioned

BLAST

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