Study of an adsorption method for trace mercury based on Bacillus subtilis-Reference-Cited by-同舟云学术

Study of an adsorption method for trace mercury based on Bacillus subtilis

Published:2021-01-01 Issue:1 Volume:19 Page:1155-1161
ISSN:2391-5420
Container-title:Open Chemistry
language:en
Short-container-title:

Author:

Li Yijin¹,Xia Shanhong²

Affiliation:

1. School of Mechanical Electronic and Information Engineering, China University of Mining and Technology – Beijing , Beijing , China

2. State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences , Beijing , China

Abstract

Abstract In order to decrease the difficulty in trace mercury determination, an adsorption method for trace mercury based on Bacillus subtilis cells was proposed in this article. The adsorption process was characterized by optical microscopy and SEM. The adsorption mechanism was analyzed by IR. The adsorption performance was studied by measuring the concentration of supernate and calculating the adsorption efficiency. When adsorbing Hg2+, Bacillus subtilis cells gathered and their structure turned coarse. The IR results illustrated that functional groups bound with Hg for complexation during adsorption. Bacillus subtilis completed adsorption for trace Hg2+ in 15 min. The adsorption efficiency was maintained above 80% under low Hg2+ concentrations (<200 µg/L). The proposed study illustrates that Bacillus subtilis cells are highly efficient and easily obtained material for the adsorption of trace mercury, which shows potential to be further used in the pretreatment of trace Hg2+ detection.

Publisher

Walter de Gruyter GmbH

Subject

Materials Chemistry,General Chemistry

Link

https://www.degruyter.com/document/doi/10.1515/chem-2021-0099/pdf

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