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Biosorption of Heavy Metals from Aqueous Solution by Bacteria Isolated from Contaminated Soil
Author(s) -
Dhanwal Pradeep,
Kumar Anil,
Dudeja Shruti,
Badgujar Hemlata,
Chauhan Rohit,
Kumar Abhishek,
Dhull Poonam,
Chhokar Vinod,
Beniwal Vikas
Publication year - 2018
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143017x15131012152979
Subject(s) - biosorption , chromium , chemistry , nuclear chemistry , bioremediation , adsorption , aqueous solution , environmental chemistry , bacillus cereus , fourier transform infrared spectroscopy , copper , arsenic , bacteria , biology , organic chemistry , chemical engineering , sorption , engineering , genetics
This study was carried out to analyze the heavy metals biosorption potential of bacteria isolated from soil contaminated with electroplating industrial effluents. Bacterial isolates were screened for their multi‐metal biosorption potential against copper, nickel, lead, and chromium. Bacterial isolate CU4A showed the maximum uptake of copper, nickel, lead, and chromium in aqueous solution, with a biosorption efficiency of 87.16 %, 79.62%, 84.92%, and 68.12%, respectively. The bacterial strain CU4A was identified as Bacillus cereus , following 16S rRNA gene sequence analysis. The surface chemical functional groups of bacterial biomass were identified by Fourier transform infrared (FTIR) spectroscopy as hydroxyl, carboxyl, amine, and halide, which may be involved in the biosorption of heavy metals. Analysis with scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) confirmed the adsorption of metals on the bacterial cell mass. The results of this study are significant and could be further investigated for the removal of heavy metals from contaminated environments.