Fe_(3)O_(4)-RGO纳米复合催化剂类芬顿处理垃圾渗滤液  

LANDFILL LEACHATE TREATMENT BY FENTON-LIKE PROCESS WITH Fe_(3)O_(4)-RGO NANO-COMPOSITE CATALYST

作　　者：武奇 范建伟[2] WU Qi;FAN Jian-wei(Anhui Zhongzheng Environment Co.,Ltd.,Wuhu 241000,China;College of Environmental Science and Engineering,Tongji University,Shanghai 200082,China)

机构地区：[1]安徽中政环境有限公司,安徽芜湖241000 [2]同济大学环境科学与工程学院,上海200082

出　　处：《环境工程》2022年第5期25-30,共6页Environmental Engineering

摘　　要：采用共沉淀法制备Fe_(3)O_(4)-RGO纳米复合催化剂,并将其应用于类芬顿处理垃圾渗滤液,研究了反应时间、初始pH值、催化剂质量浓度和H_(2)O_(2)投加量对Fe_(3)O_(4)-RGO纳米复合催化剂类芬顿降解垃圾渗滤液COD去除率的影响。结果表明:反应时间为90 min,初始pH值为3,催化剂质量浓度为1 mg/L,H_(2)O_(2)投加量为0.08 mmol/L时,COD去除率达到最大值64.7%。有机物组分对比结果显示,类芬顿反应后垃圾渗滤液中大分子有机物得到较好的降解转化。Fe_(3)O_(4)-RGO纳米复合催化剂具有较好的重复利用性,重复使用5次后对垃圾渗滤液的COD去除率仅降低2.3%。Fe_(3)O_(4)-RGO nanocomposite catalyst was prepared by coprecipitation method and then investigated in Fenton-like process when treating landfill leachate.The effect of reaction time,initial pH value,catalyst mass concentration and H_(2)O_(2) dosage on COD removal rate of landfill leachate were studied.The results indicated that when the initial pH value was 3,catalyst mass concentration was 1 mg/L and H_(2)O_(2) dosage was 0.08 mmol/L,the removal rate of COD removal rate reached a maximum of 64.7%after 90 minutes reaction.The comparison of organic components showed that the macromolecular organic matter in the landfill leachate was well degraded after Fenton-like treatment.The Fe_(3)O_(4)-RGO nanocomposite catalyst had good repeatability,and the COD removal rate of landfill leachate was only reduced by 2.3%after 5 times usage.

关 键 词：Fe_(3)O_(4)-RGO 垃圾渗滤液 类芬顿 COD去除率 共沉淀法 

分 类 号：TQ426[化学工程] X703[环境科学与工程—环境工程]