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[Red Mud-activated Peroxymonosulfate for Ciprofloxacin Degradation: Efficiency and Mechanism].
Huan Jing Ke Xue. 2020 Apr 08; 41(4):1743-1751.HJ

Abstract

In this paper, the effects and mechanism of ciprofloxacin (CIP) degradation with peroxymonosulfate (PMS) catalyzed by solid waste red mud (RM) was firstly studied. The results indicated that RM has large specific surface area (10.96 m2·g-1) and complex pore structure, containing ferric, alumina and calcium oxide, which enhanced ciprofloxacin degradation by PMS effectively. Radical quenching experiments revealed that SO4-·and HO·were contributed to ciprofloxacin oxidation, and the reaction was mainly occurred on RM's surface. An increase in temperature could accelerate CIP degradation, and the corresponding reaction activation energy Ea was about 5.74 kJ·mol-1. Meanwhile, CIP degradation rate increased with PMS concentration and the optimal dosage of RM was 1.0 g·L-1. Eight degradation intermediates were identified using HPLC/MS/MS, and consequently, CIP was degraded mainly through two pathways; the piperazine groups were preferentially attacked by active free radicals. This study further indicated that RM is a cheap catalyst and can be potentially used in the treatment of antibiotic contaminated wastewater.

Authors+Show Affiliations

State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi'an University of Technology, Xi'an 710048, China.State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi'an University of Technology, Xi'an 710048, China.State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi'an University of Technology, Xi'an 710048, China.Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, Ministry of Education, Northwest University, Xi'an 710069, China.Shaanxi Reconnaissance Design&Research Institute of Water Environmental Engineering, Xi'an 710021, China.

Pub Type(s)

Journal Article

Language

chi

PubMed ID

32608681

Citation

Shi, Jing-Zhuan, et al. "[Red Mud-activated Peroxymonosulfate for Ciprofloxacin Degradation: Efficiency and Mechanism]." Huan Jing Ke Xue= Huanjing Kexue, vol. 41, no. 4, 2020, pp. 1743-1751.
Shi JZ, Wei H, Zhou XD, et al. [Red Mud-activated Peroxymonosulfate for Ciprofloxacin Degradation: Efficiency and Mechanism]. Huan Jing Ke Xue. 2020;41(4):1743-1751.
Shi, J. Z., Wei, H., Zhou, X. D., Li, K. B., & Shi, Y. J. (2020). [Red Mud-activated Peroxymonosulfate for Ciprofloxacin Degradation: Efficiency and Mechanism]. Huan Jing Ke Xue= Huanjing Kexue, 41(4), 1743-1751. https://doi.org/10.13227/j.hjkx.201911239
Shi JZ, et al. [Red Mud-activated Peroxymonosulfate for Ciprofloxacin Degradation: Efficiency and Mechanism]. Huan Jing Ke Xue. 2020 Apr 8;41(4):1743-1751. PubMed PMID: 32608681.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Red Mud-activated Peroxymonosulfate for Ciprofloxacin Degradation: Efficiency and Mechanism]. AU - Shi,Jing-Zhuan, AU - Wei,Hong, AU - Zhou,Xiao-de, AU - Li,Ke-Bin, AU - Shi,Ying-Juan, PY - 2020/7/2/entrez PY - 2020/7/2/pubmed PY - 2020/9/18/medline KW - ciprofloxacin(CIP) KW - degradation pathway KW - hydroxyl radical KW - peroxymonosulfate(PMS) KW - red mud(RM) SP - 1743 EP - 1751 JF - Huan jing ke xue= Huanjing kexue JO - Huan Jing Ke Xue VL - 41 IS - 4 N2 - In this paper, the effects and mechanism of ciprofloxacin (CIP) degradation with peroxymonosulfate (PMS) catalyzed by solid waste red mud (RM) was firstly studied. The results indicated that RM has large specific surface area (10.96 m2·g-1) and complex pore structure, containing ferric, alumina and calcium oxide, which enhanced ciprofloxacin degradation by PMS effectively. Radical quenching experiments revealed that SO4-·and HO·were contributed to ciprofloxacin oxidation, and the reaction was mainly occurred on RM's surface. An increase in temperature could accelerate CIP degradation, and the corresponding reaction activation energy Ea was about 5.74 kJ·mol-1. Meanwhile, CIP degradation rate increased with PMS concentration and the optimal dosage of RM was 1.0 g·L-1. Eight degradation intermediates were identified using HPLC/MS/MS, and consequently, CIP was degraded mainly through two pathways; the piperazine groups were preferentially attacked by active free radicals. This study further indicated that RM is a cheap catalyst and can be potentially used in the treatment of antibiotic contaminated wastewater. SN - 0250-3301 UR - https://www.unboundmedicine.com/medline/citation/32608681/[Red_Mud_activated_Peroxymonosulfate_for_Ciprofloxacin_Degradation:_Efficiency_and_Mechanism]_ DB - PRIME DP - Unbound Medicine ER -