2.广东省环境污染控制与修复技术重点实验室,广州 510275
1.School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
2.Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China
直接氧化作用的加入使OTC的去除率提高了6.2%~15.9%;加入PS后,OTC的去除率增加了13.9%~23.2%,这是由8.6%~13.7%的·OH氧化作用和4.5%~7.5%的
/PS氧化降解。以上研究结果为含OTC废气的产生、检测和处理提供了参考。
In order to remove oxytetracycline (OTC)-containing waste gas generated from the process of high temperature composting of livestock manure, an advanced oxidation method of ozone and sodium persulfate (O
/PS) was used to degrade OTC-containing waste gas in the spray tower. The performance and the coupling role of ozone and sodium persulfate on OTC removal in spray tower were evaluated through comparing the OTC removal efficiencies by the device under different conditions. The result showed the OTC removal efficiency in spray tower with O
/PS could reach 94.7%. The 6.2%~15.9% increase of OTC removal efficiency was attributed to the direct oxidation of ozone. After PS addition, the OTC removal efficiency increased by 13.9%~23.2%, including 8.7%~11.9% by ·OH oxidation and 4.3%~7.5% by
oxidation. The intermediate products from OTC degradation were detected by LC-TOF-MS/MS, which indicated that OTC was mainly degraded to C
. The analysis showed that the OTC-containing waste gas could be effectively removed by pray tower, and be degraded by O
/PS advanced oxidation. The above research provides reference for the generation, detection, treatment and application of OTC-containing waste gas.
.
Coordinated treatment device of OTC-containing waste gas with ozone-sodium persulfate
and PS doses on OTC removal efficiency
and PS on OTC removal
Effect of the radical species on OTC removal
Fluorescence spectra of terephthalic acid oxidized by hydroxyl radical
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