摘要： 采用改进Hummers法制备氧化石墨烯，用水合肼将其还原制成石墨烯，并通过FTIR、XRD、FESEM、循环伏安法进行表征。以自制石墨烯修饰的石墨电极（RCE）为阳极，纯石墨电极为阴极，构建二维电极体系电催化氧化处理高氨氮垃圾渗滤液生化出水。在电流为15 A、极板间距为1.5 cm、pH=7、反应时间为45 min的实验条件下，氨氮去除率为98%，其主要转化为氮气而被去除，符合零级反应动力学模型；COD去除率为88%，降解过程符合一级反应动力学模型。
关键词:
电催化氧化,
石墨烯,
高氨氮,
垃圾渗滤液
Abstract: Graphene oxide has been prepared by the improved Hummers method,and then reduced with hydrazine so as to obtain graphene,which is characterized by means of FTIR,XRD,FESEM and CV techniques. The home-made graphene modified graphite electrode(REC) can be used as anode,and graphite as cathode. The two-dimensional electrode system has been established by electro catalytic oxidation technology for treating the biochemical effluent from landfill leachate with high ammonia nitrogen. The ammonia nitrogen removing rate is 98%,when the experimental conditions are as follows:current is 15 A,plate spacing 1.5 cm,pH=7,and reaction time 45 min. The ammonia nitrogen has mainly been converted into nitrogen and removed from wastewater in the degradation process,which complies with the zero-order reaction kinetics model. Addiitionally,the removing rate of COD is 88%,and the degradation process complies with the first-order reaction kinetics model.
Key words:
electrocatalytic oxidation,
graphene,
high ammonia nitrogen,
landfill leachate
中图分类号:
滕厚开, 聂荣健, 谢陈鑫, 靳晓霞, 徐俊英. 石墨烯修饰石墨电极制备及在高氨氮废水中的应用[J]. 工业水处理, 2018, 38(12): 42-46.
Teng Houkai, Nie Rongjian, Xie Chenxin, Jin Xiaoxia, Xu Junying. Preparation of the graphene modified graphite electrode and its application to the treatment of wastewater with high ammonia nitrogen[J]. INDUSTRIAL WATER TREATMENT, 2018, 38(12): 42-46.