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Removal of chlortetracycline from water using spent tea leaves-based biochar as adsorption-enhanced persulfate activator
Y. P. Chen; C. H. Zheng; Y. Y. Huang and Y. R. Chen
2022
Source PublicationChemosphere
ISSN0045-6535
Volume286Pages:8
AbstractAntibiotic compounds have caused serious environmental concerns. In this study, we developed an effective technology for treatment of chlortetracycline (CTC), a widely used antibiotic compound. A natural heteroatomdoped spent tea leaves-based biochar (STLB) with excellent adsorption and catalytic property was prepared by simple thermal treatment. An adsorption-promoted persulfate-based advanced oxidation process (PS-AOP) using STLB was studied for CTC removal. The results showed that the as-prepared STLB presented favorable adsorption affinity towards CTC with the maximum adsorption capacity of 627 mg g-1. Meanwhile, CTC enriched on the surface of STLB was good for in-situ decomposition of CTC and nearly 97.4 % of CTC was removed within 30 min of pre-adsorption and 60 min of subsequent degradation. The STLB had excellent recyclability and wide pH tolerance range of 3.0-9.0 in combined pre-adsorption and PS-AOP. Reactive oxygen species analysis confirmed that CTC degradation was mainly due to non-radical (singlet oxygen, 1O2) and radicals (SO4 center dot- and center dot OH). This study suggests that STLB is a promising adsorption-enhanced PS activator for the treatment of refractory wastewater and also provides a strategy of waste control by spent tea leaves.
DOI10.1016/j.chemosphere.2021.131770
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Document Type期刊论文
Identifierhttp://ir.ciomp.ac.cn/handle/181722/65585
Collection中国科学院长春光学精密机械与物理研究所
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GB/T 7714
Y. P. Chen,C. H. Zheng,Y. Y. Huang and Y. R. Chen. Removal of chlortetracycline from water using spent tea leaves-based biochar as adsorption-enhanced persulfate activator[J]. Chemosphere,2022,286:8.
APA Y. P. Chen,C. H. Zheng,&Y. Y. Huang and Y. R. Chen.(2022).Removal of chlortetracycline from water using spent tea leaves-based biochar as adsorption-enhanced persulfate activator.Chemosphere,286,8.
MLA Y. P. Chen,et al."Removal of chlortetracycline from water using spent tea leaves-based biochar as adsorption-enhanced persulfate activator".Chemosphere 286(2022):8.
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