Simultaneous Manganese Adsorption and Biotransformation by Streptomyces Violarus Strain SBP1 Cell-Immobilized Biochar

Document Type

Article

Publication Date

4-15-2020

Publication Title

Science of The Total Environment

Volume

715

First page number:

1

Last page number:

10

Abstract

Consumption of water containing high proportions of manganese could cause Parkinson's like symptoms and damage the central nervous systems. This study aims to investigate the potential of manganese removal through the development of microbial cell-immobilized biochar. The wood vinegar industry generates a large volume of carbonized wood waste (natural biochar) from the pyrolytic process. This is the first investigation utilizing this low value waste combined with biological treatment for water purification. Raw and hydrogen peroxide-modified biochars were used to immobilize an effective manganese-oxidizing bacterium, Streptomyces violarus strain SBP1 (SBP1). The results demonstrated that the modified biochar had a higher proportion of oxygen-containing functional groups leading to better manganese removal. Manganese adsorption by the modified biochar fitted pseudo-second-order and Langmuir models with the maximum adsorption capacity of 1.15 mg g−1. The modified biochar with SBP1 provided the highest removal efficiency at 78%. The advanced synchrotron analyses demonstrated that manganese removal by the biochar with SBP1 is due to the synergistic combination of manganese adsorption by biochars and biological oxidation by SBP1.

Keywords

Biochar; Cell immobilization; Micro X-ray fluorescence spectroscopy; X-ray absorption near edge structure; Wood pyrolysis

Disciplines

Civil and Environmental Engineering | Engineering | Environmental Engineering

Language

English

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