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Biosorption of Pb (II) and Zn (II) from aqueous solution by Oceanobacillus profundus isolated from an abandoned mine

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Title: Biosorption of Pb (II) and Zn (II) from aqueous solution by Oceanobacillus profundus isolated from an abandoned mine
Authors: Mwandira, Wilson Browse this author
Nakashima, Kazunori Browse this author
Kawasaki, Satoru Browse this author →KAKEN DB
Arabelo, Allison Browse this author
Banda, Kawawa Browse this author
Nyambe, Imasiku Browse this author
Chirwa, Meki Browse this author
Ito, Mayumi Browse this author →KAKEN DB
Sato, Tsutomu Browse this author →KAKEN DB
Igarashi, Toshifumi Browse this author →KAKEN DB
Nakata, Hokuto Browse this author →KAKEN DB
Nakayama, Shouta Browse this author →KAKEN DB
Ishizuka, Mayumi Browse this author →KAKEN DB
Issue Date: 3-Dec-2020
Publisher: Nature Research
Journal Title: Scientific reports
Volume: 10
Issue: 1
Start Page: 21189
Publisher DOI: 10.1038/s41598-020-78187-4
Abstract: The present study investigated biosorption of Pb (II) and Zn (II) using a heavy metal tolerant bacterium Oceanobacillus profundus KBZ 3-2 isolated from a contaminated site. The effects of process parameters such as effect on bacterial growth, pH and initial lead ion concentration were studied. The results showed that the maximum removal percentage for Pb (II) was 97% at an initial concentration of 50 mg/L whereas maximum removal percentage for Zn (II) was at 54% at an initial concentration of 2 mg/L obtained at pH 6 and 30 degrees C. The isolated bacteria were found to sequester both Pb (II) and Zn (II) in the extracellular polymeric substance (EPS). The EPS facilitates ion exchange and metal chelation-complexation by virtue of the existence of ionizable functional groups such as carboxyl, sulfate, and phosphate present in the protein and polysaccharides. Therefore, the use of indigenous bacteria in the remediation of contaminated water is an eco-friendly way of solving anthropogenic contamination.
Rights: https://creativecommons.org/licenses/by/4.0/
Type: article
URI: http://hdl.handle.net/2115/80630
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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