标题：Rapid and continuous oxidation of organic contaminants with ascorbic acid and a modified ferric/persulfate system作者：Lei, Yang; Zhang, Hui; Wang, Jiawen; Ai, Jia

来源出版物：CHEMICAL ENGINEERING JOURNAL 卷：270 页：73-79 DOI: 10.1016/j.cej.2015.02.014 出版年：JUN 15 2015

摘要：An eco-friendly reagent, Vitamin C (ascorbic acid, H(2)A), has been introduced into a traditional iron activated persulfate (PS) process (Fe2+/PS). The modified Fe3+/H(2)A/PS system exhibits a rapid and continuous oxidation of organic contaminants, and shows great advantages over the conventional Fe2+/PS process by enhanced removal efficiency and wide working initial pH (pH(0) 2.0-6.2). This can be attributed to both the reduction and chelating ability of ascorbic acid. The optimal dosages of ascorbic acid, ferric ion and persulfate were determined by batch experiments. Radical quenching experiments show that SO4- and HO center dot are the main reactive species in the Fe3+/H(2)A/PS process. Based on these results, a plausible degradation mechanism is proposed. The modified system may provide a simple and effective technology for the decomposition of refractory organics in water.

入藏号：WOS:000353729100010

文献类型：Article

语种：English

作者关键词：Sulfate radical, Peroxydisulfate, Vitamin C, Refractory pollutants

扩展关键词：ENHANCED HETEROGENEOUS ACTIVATION; SITU CHEMICAL OXIDATION; ZERO-VALENT IRON; AQUEOUS-SOLUTION; PERSULFATE OXIDATION; FERROUS ION; ORANGE 7; BISPHENOL-A; ELECTRO/FE2+/PEROXYDISULFATE PROCESS; SPECTROPHOTOMETRIC METHOD

通讯作者地址：Zhang, Hui; Wuhan Univ, Dept Environm Engn, Wuhan 430079, Peoples R China.

电子邮件地址：eeng@whu.edu.cn

地址：[Lei, Yang; Zhang, Hui; Wang, Jiawen; Ai, Jia] Wuhan Univ, Dept Environm Engn, Wuhan 430079, Peoples R China.

研究方向：Engineering

ISSN：1385-8947

eISSN: 1873-3212