铁元素对有机物厌氧降解的影响研究  

Study on the Effects of Iron on Organics Anaerobic Biodegradation

作　　者：陈皓[1] 陈玲[1] 赵建夫[1] 张红[1] 孙娜[1] 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《四川环境》2005年第6期14-16,共3页Sichuan Environment

基　　金：国家863计划重大专项<高级催化还原技术与设备>(20025AA601270)

摘　　要：不同价态的铁元素氧化还原性不同,对有机物的厌氧生物降解过程的影响也不同.以邻氯苯酚和硝基苯为目标污染物,投铁量为20～100mg/L的条件下,单质铁能加速硝基苯的厌氧降解,对2-氯酚降解的影响则很小;二价铁和三价铁对两种物质都表现出一定的抑制作用,投加浓度越高,抑制作用越明显.Iron with different chemical valence has different oxidation-reduction potential, and has different effects on anaerobic biodegradation of organics. Different effects of iron on 2-chlorophenol and nitrobenzene anaerobic biodegradation were observed in the presence of iron ranging from 20 mg/L to 100mg/L. Under such dosage, Fe^0 resulted in accelerating the nitrobenzene degradation, but had no clearly influence on 2-chlorophenol. In case of Fe^2＋ and Fe^3＋ , the anaerobic biodegradation activity of both 2-chlorophenol and nitrobenzene were inhibited in a certain degree. The higher the concentration of iron is, the stronger the inhibition is.

关 键 词：铁元素 2-氯酚 硝基苯 厌氧生物降解 氧化还原电位 

分 类 号：X592[环境科学与工程—环境工程]