Enhancement of Electron Transfer in Various Photo-Assisted Oxidation Processes for Nitro-Phenolic Compound Conversion

• DOI: 10.1007/s11664-016-4576-4
• Publication Date: 2016-05-25T01:01:19Z
• Authors: Do Ngoc Khue; Tran Dai Lam; Do Binh Minh; Vu Duc Loi; Nguyen Hoai Nam; Vu Quang Bach; Nguyen Van Anh; Nguyen Van Hoang; Dao Duy Hu’ng
• Keywords: Solid-state physics

The present study focuses on photo-assisted advanced oxidation processes (AOPs) with strongly enhanced electron transfer for degradation of nitro-phenolic compounds in aqueous medium. The effectiveness of these processes was estimated based on the pseudo-first order rate constant k determined from high-performance liquid chromatography. The degradation of four different nitro-phenolic compounds was systematically studied using selected AOPs; these four compounds were nitrophenol, dinitrophenol, trinitrophenol and trinitroresorcin. It was observed that the combination of ultraviolet light with hydrogen peroxide H2O2 enhanced and maintained hydroxyl radicals, and therefore increased the conversion yield of organic pollutants. These AOPs provided efficient and green removal of stable organic toxins found in a wide range of industrial wastewater.