Monoclinic Pyrrhotite Derived from Pyrite through Thermal Decomposition to Activate PDS for the Degradation of Oxytetracycline

被引：0

作者：

Liu M. ^{[1
]}

Wang H. ^{[1
]}

Liu H. ^{[1
]}

Chen T. ^{[1
]}

Zou X. ^{[1
]}

Sun F. ^{[1
]}

Chu Z. ^{[1
]}

Zhai P. ^{[1
]}

Chen D. ^{[1
]}

机构：

[1] Key Laboratory of Nano-minerals and Pollution Control of Anhui Higher Education Institutes, School of Resources & Environmental Engineering, Hefei University of Technology, Hefei

来源：

Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2021年 / 49卷 / 07期

关键词：

Monoclinic pyrrhotite; Oxytetracycline; Pyrite; Sodium persulfate; Thermal decomposition;

D O I：

10.14062/j.issn.0454-5648.20210035

中图分类号：

学科分类号：

摘要：

Monoclinic pyrrhotite (M-Pyr) was derived from pyrite through thermal decomposition in nitrogen atmosphere with controlled temperature and time, which was used to activate sodium persulfate (PDS) for the degradation of oxytetracycline (OTC). The effects of initial concentration of OTC, initial solution pH value, contents of PDS and M-Pyr on OTC degradation were studied. The contents of PDS and M-Pyr had a positive effect on the OTC removal rate, while the effect of the initial OTC concentration was negative. Specifically, 99% of OTC was degraded in the M-Pyr/PDS system with pH=6-7, ρ (M-Pyr) =0.1 g/L and c(PDS)=1.0 mmol/L. The removal rate of OTC was 86.5% after recycling for two times, where the relatively poor recyclability might be attributed to the corrosion of M-Pyr and the formation of intermediate product to occupy the active sites. Sulfate radical and hydroxyl radical were the main active species in the M-Pyr/PDS system. © 2021, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.

引用

页码：1403 / 1411

页数：8

共 36 条

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