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Cho, Kyung Hwa
Water-Environmental Informatics Lab.
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Novel activation of peroxymonosulfate by biochar derived from rice husk toward oxidation of organic contaminants in wastewater

Author(s)
Huong, Pham ThiKim, JitaeAl Tahtamouni, T.M.Le Minh Tri, NguyenKim, Hak-HyeonCho, Kyung HwaLee, Changha
Issued Date
2020-02
DOI
10.1016/j.jwpe.2019.101037
URI
https://scholarworks.unist.ac.kr/handle/201301/30559
Fulltext
https://www.sciencedirect.com/science/article/pii/S2214714419307597
Citation
JOURNAL OF WATER PROCESS ENGINEERING, v.33, pp.101037
Abstract
In this study, novel activation of peroxymonosulfate (PMS) by biochar derived from rice husk (generally considered useless agricultural wastes in Vietnam) toward organic pollutants from wastewater was investigated. The basic properties of biochar were characterized through field-emission scanning electron microscopy (FE-SEM), elemental analysis (EA) and gas adsorption analysis (BET). Operating parameters including PMS concentration, dose of biochar and initial concentration of target pollutants (tetracycline and bisphenol A) were systematically studied. The results showed that biochar derived from rice husk effectively activated of PMS, leading to high degradation of organic pollutants in wastewater. The degradation efficiency of organic pollutants increased with increasing PMS concentration and amount of biochar. The reuse of rice husk biochar and the possible mechanism for PMS activation were proposed accordingly. In addition, the evaluation of potential available rice husk biomass in Vietnam was discussed. These findings suggest a novel rice husk biochar for activation of PMS toward toxic organic pollutants from wastewater.
Publisher
ELSEVIER
ISSN
2214-7144
Keyword (Author)
Rice huskBiocharOrganicPollutantsPeroxymonosulfateWastewater
Keyword
PERSISTENT FREE-RADICALSBISPHENOL-APHOTOCATALYTIC DEGRADATIONHYDROXYL RADICALSREMOVALPERSULFATECARBONADSORPTIONPOLLUTANTSTETRACYCLINE

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