矿化(土壤科学)
苯酚
化学
碳纳米管
水溶液
锌
降级(电信)
核化学
总有机碳
环境化学
无机化学
化学工程
有机化学
氮气
工程类
电信
计算机科学
作者
Yong Liu,Anlan Zhou,Yanlan Liu,Jianlong Wang
出处
期刊:Chemosphere
[Elsevier]
日期:2017-10-05
卷期号:191: 54-63
被引量:26
标识
DOI:10.1016/j.chemosphere.2017.10.025
摘要
A novel zinc-carbon nanotubes (Zn-CNTs) composite was prepared, characterized and used in O3 system for the enhanced degradation and mineralization of chlorinated phenol. The Zn-CNTs was characterized by SEM, BET and XRD, and the degradation of 4-chloro-3-methyl phenol (CMP) in aqueous solution was investigated using Zn-CNTs/O3 system. The experimental results showed that the rate constant of total organic carbon (TOC) removal was 0.29 min-1, much higher than that of only O3 system (0.059 min-1) because Zn-CNTs/O2 system could generate H2O2 in situ, the concentration of H2O2 could reach 156.14 mg/L within 60 min at pH 6.0. The high mineralization ratio of CMP by Zn-CNTs/O3 occurred at wide pH range (3.0-9.0). The increase of Zn-CNTs dosage or gas flow rate contributed to the enhancement of CMP mineralization. The intermediates of CMP degradation were identified and the possible degradation pathway was tentatively proposed.
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