铁铝复合氧化物吸附砷氟性能实验研究  

Experimental Research on Adsorption Properties of Arsenic and Fluoride by Iron-aluminum Binary Oxide

作　　者：杨天明[1] 葛建团 韩菲[3] 

机构地区：[1]兰州交通大学环境与市政工程学院,甘肃兰州730070 [2]甘肃省环境科学设计研究院,甘肃兰州730030 [3]中国市政工程华北设计研究总院,天津300074

出　　处：《广东化工》2010年第6期29-31,共3页Guangdong Chemical Industry

摘　　要：采用共沉淀法制备了复合铁铝氧化物吸附剂,并对其表面ξ电位和砷氟共存时除砷氟性能进行了初步研究。ξ电位表明铁铝复合氧化物pHzpc在9.0附近;铁铝复合氧化物对砷氟共存溶液中As（V）和F-均表现出很强的吸附能力,决定F-的去除率的是铝含量;该吸附剂对砷氟共存溶液As（V）在广谱pH范围内具有很高的去除能力,对F-在pH为6~7之间时去除率最高;砷氟共存溶液中As（V）对F-具有竞争吸附作用。The adsorbent of iron-aluminum binary oxide was prepared by co-precipitation, and its ξ potential was determined and adsorption properties for arsenic and fluoride removal were studied. pHzpc of iron-aluminum binary oxide was at near 9.0; the iron-aluminum binary oxide proved to be effective to remove both arsenic and fluoride from water and the fluoride removal was decided by aluminum content. It was successfully applied for arsenic removal in broad pH ranges and for fluoride removal in pH 6~7; Arsenic had a competition effect on fluoride adsorption by iron-aluminum binary oxide.

关 键 词：复合铁铝氧化物 砷氟共存 ξ电位 竞争吸附 

分 类 号：X132[环境科学与工程—环境科学]