%0 Journal Article
%T Removal of Direct Black G in aqueous solution using kaolin supported Fe-Ni nanoparticles<br>高岭土负载纳米铁镍双金属去除水中偶氮染料直接耐晒黑G
%A Liu Xinwen
%A Chen Zhengxian
%A Wang Qingping
%A Zheng Yuyi
%A Chen Zuliang
%A <br>刘馨文
%A 陈征贤
%A 王清萍
%A 郑育毅
%A 陈祖亮
%J 环境工程学报
%D 2012
%I 
%X Calcinated kaolin supported iron-nickel bimetallic nanoparticles (CK-Fe/Ni) was synthetized and used for the degradation of azo dye Direct Black G (DBG). The parameters affecting the degradation of DBG such as solution pH, dosage, initial concentration of DBG and temperature were investigated. Results show that the 99.98% of DBG in aqueous solution was removed after 20 minutes using CK-Fe/Ni at pH of 9.49, 303 K and 1.05 g/L of CK-Fe/Ni. In addition, batch experiments and scanning electron microscopy (SEM) show that the presence of calcinated kaolin led to adsorb the DBG on the calcinated kaolin, as well as a decrease in aggregation of Fe/Ni nanoparticles and a corresponding increase in the reactivity. The kinetics show that the degradation process of DBG fits well the pseudo-first-order kinetics, and the rate constant increases with the increasing dosage of CK-Fe/Ni with Ea=19.72 kJ/mol. Finally, the degradation of wastewater using CK-Fe/Ni indicates that the 99.98% of DBG was removed.
%K Fe-Ni nanoparticles
%K calcinated kaolin
%K removal
%K supported
%K Direct Black G
%K azo dyes<br>纳米铁镍
%K 焙烧高岭土
%K 去除
%K 负载
%K 直接耐晒黑G
%K 偶氮染料
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=92E6F4267FD4CBCB51B1E49E014D8054&jid=3567BD61129AA59043F5DE01F8815DB5&aid=37D4B66310E46B833A25C67F3411B79A&yid=99E9153A83D4CB11&vid=B31275AF3241DB2D&iid=708DD6B15D2464E8&sid=A1ACADF58E25FF1C&eid=BFFEDBDA09089B23&journal_id=1673-9108&journal_name=环境工程学报&referenced_num=0&reference_num=17