Optimization of Cr(VI) Adsorption by Bacillus amyloliquefaciens and Its Mechanism Study

Hedong Lu, Hedong Lu, Chengyuan Gu, Panping Yang, Hai Xu, Muhanmmad Bilal

2022

Abstract

In recent decades, with the rapid development of social economy, heavy metal pollution has become increasingly serious. With laboratory preservation a strong resistant Bacillus amyloliquefaciense was used as experiment strains to verify whether Ca2+ could improve the tolerance of the experimental strains to metal and explore the adsorption characteristics of the experimental strains to Cr6+ as well as optimize the adsorption conditions. This experiment used the single factor experiment combined with dibenzoyl hydrazine method to optimize Bacillus amyloliquefaciens of Cr6+ adsorption conditions. The experimental results showed that when calcium chloride (0.1 g/L) was in the medium, the tolerance was increased by 21.26%, 76.21% and 269.66% at Cr6+ concentrations of 20, 40 and 60 mg/L, respectively. When the carbon source was maltose (25 g/L) and the nitrogen source was trypsin (25 g/L), the best adsorption temperature and pH value weree 35 ? and 7.5, respectively. When the concentration of Cr6+ was 20mg/L, the adsorption rate was as high as 89.20%, which was 24.34% higher than that before optimization. Bacillus amyloliquefaciens has good adsorption potential for Cr6+, which can provide excellent microbial resources for bioremediation or environmental pollution.

Paper Citation

in Harvard Style

Lu H., Gu C., Yang P., Xu H. and Bilal M. (2022). Optimization of Cr(VI) Adsorption by Bacillus amyloliquefaciens and Its Mechanism Study. In Proceedings of the 4th International Conference on Biomedical Engineering and Bioinformatics - Volume 1: ICBEB, ISBN 978-989-758-595-1, pages 1206-1212. DOI: 10.5220/0011382700003443

in Bibtex Style

@conference{icbeb22,
author={Hedong Lu and Chengyuan Gu and Panping Yang and Hai Xu and Muhanmmad Bilal},
title={Optimization of Cr(VI) Adsorption by Bacillus amyloliquefaciens and Its Mechanism Study},
booktitle={Proceedings of the 4th International Conference on Biomedical Engineering and Bioinformatics - Volume 1: ICBEB,},
year={2022},
pages={1206-1212},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0011382700003443},
isbn={978-989-758-595-1},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 4th International Conference on Biomedical Engineering and Bioinformatics - Volume 1: ICBEB,
TI - Optimization of Cr(VI) Adsorption by Bacillus amyloliquefaciens and Its Mechanism Study
SN - 978-989-758-595-1
AU - Lu H.
AU - Gu C.
AU - Yang P.
AU - Xu H.
AU - Bilal M.
PY - 2022
SP - 1206
EP - 1212
DO - 10.5220/0011382700003443