标題：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

來源出版物：CHEMICAL ENGINEERING JOURNAL 卷：270 頁：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

文獻類型：Article

語種：English

作者關鍵詞：Sulfate radical, Peroxydisulfate, Vitamin C, Refractory pollutants

擴展關鍵詞：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

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

電子郵件地址：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