重金属在碱渣层中的分布及形态研究  

Distribution and Speciation of Heavy Metals in Alkali Residue

作　　者：曹煊[1] 孙继昌[1] 金春姬[2] 高杨[1] 刘岩[1] 尤小华[1] 

机构地区：[1]山东省科学院海洋仪器仪表研究所海洋环境监测技术重点实验室,山东青岛266001 [2]中国海洋大学海洋环境与生态教育部重点实验室,山东青岛266001

出　　处：《化工环保》2011年第1期5-8,共4页Environmental Protection of Chemical Industry

基　　金：国家自然科学基金资助项目(20307009);山东省科学院博士基金资助项目(Y09-3)

摘　　要：采用自制动态吸附柱考察了碱渣层对重金属离子(Cu^(2+)、Zn^(2+)和Cd^(2+))的吸附截留能力。实验结果表明,在高浓度和高水力负荷条件下,碱渣对Cu^(2+)、Zn^(2+)和Cd^(2+)的最大吸附量分别可达194.451,24.245,11.036 mg/g,穿透时间均达60 h以上,饱和吸附时间超过80 h。通过Tessier提取法考察了碱渣层中重金属的存在形态,实验结果表明,重金属离子在碱渣表面的存在形态主要为铁锰氧化物结合态和碳酸盐结合态,以有机结合态存在的重金属离子极少。The adsorption capability of alkali residue to heavy metals （ such as Cu2＋ , Zn2＋ and Cd2＋） was investigated using a self-made dynamic adsorption column. The experimental results show that under the conditions of high concentration and high hydraulic load, the most adsorption quantities of alkali residue to Cu2＋ , Zn2＋ and Cd2＋ can reach 194. 451, 24. 245, 11.036 mg/g, respectively, the penetration time can reach over 60 h, and the saturated absorption time can reach more than 80 h. Heavy metal species in alkaline residue were also studied using Tessier extraction. The experimental results show that the heavy metals on the surface of alkali residue are mainly in Fe-Mn oxide form and carbonate-bounded form, hardly in organic-bounded form.

关 键 词：重金属 动态吸附 碱渣 形态分布 

分 类 号：X705[环境科学与工程—环境工程]