Open AccessAbiotic reduction of p-chloronitrobenzene by sulfate green rust: influence factors, products and mechanism
Author(s) -
Ying Han,
Junkai Huang,
Hong-Yuan Liu,
Yue Wu,
Weiqiang Zhao,
Kemin Zhang,
Qianqian Lu
Publication year - 2020
Publication title -
rsc advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.746
H-Index - 148
ISSN - 2046-2069
DOI - 10.1039/d0ra02113j
Subject(s) - abiotic component , sulfate , mechanism (biology) , rust (programming language) , chemistry , environmental chemistry , ecology , biology , organic chemistry , physics , computer science , quantum mechanics , programming language
The reduction of p -chloronitrobenzene ( p -CNB) by sulfate green rust (GR SO 4 ) was systematically studied. The results revealed that GR SO 4 has a good removal effect on p -CNB. The removal efficiencies of p -CNB by GR SO 4 improved with the increase of the pH value. The removal efficiencies in the presence of ions were better than that of GR SO 4 alone, while natural organic matter (NOM) could adsorb p -CNB, which competed with GR SO 4 . The reductions of p -CNB by GR SO 4 under different conditions followed pseudo-first-order reaction kinetics except for the reactions in the presence of NOM. p -CNB was converted into p -chloroaniline ( p -CAN), which produced p -nitrosochlorobenzene and p -chlorophenylhydroxylamine as the intermediate products. The results of the X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) showed GR SO 4 was gradually transformed into goethite. Fe(ii) in the GR SO 4 structure was the main electron donor involved in the reaction.