化工学报2016，Vol.67Issue(10)：4413-4421,9.DOI:10.11949/j.issn.0438-1157.20160446
添加剂改性Fenton体系中Fe2+再生过程及机制的对比
Comparison of regeneration mechanism of Fe2+ in modified Fenton system
摘要
Abstract
The regeneration of Fe2+ can have a marked effect oniOH production in Fenton system. Hydroxylamine hydrochloride, hydroquinone,p-benzoquinone and sodium sulfite were used as typical additives. Different regeneration mechanisms of Fe2+ were revealed by analysis of Fe2+ concentration, H2O2 concentration and oxidation-reduction potential (ORP) as well. Furthermore, reactions between additives and H2O2 andiOH were also explored. Results demonstrated that Fe2+ was regenerated by hydroxylamine quickly, but concentration of Fe2+ gradually decreased with the consumption of hydroxylamine. Hydroquinone andp-benzoquinone exerted similar effect on Fenton system, resulting in enhanced regeneration of Fe2+. Quinone cycle could be built once they were added to Fenton system. Therefore, the concentration of Fe2+ could maintain a relatively high level in a long period. Quinone cycle can be established by one of the two substances or their mixture. Sodium sulfite reacted withi OH and H2O2, which contributed to a poor performance on Fe3+ reduction.关键词
Fenton/Fe2+再生/自由基/罗丹明B/还原/水溶液Key words
Fenton/regeneration of ferrous ion/radical/Rhodamine B/reduction/aqueous solution分类
资源环境引用本文复制引用
周伟,赵海谦,高继慧,吴少华..添加剂改性Fenton体系中Fe2+再生过程及机制的对比[J].化工学报,2016,67(10):4413-4421,9.基金项目
国家自然科学基金项目（91434134，51276052）。@@@@Foundation item：supported by the National Natural Science Foundation of China (91434134,51276052) （91434134,51276052）
