%0 Journal Article
%T Biosorption of Cu2+ and Zn2+ by raw and autoclaved Rocella phycopsis<br>Biosorption of Cu^2＋ and Zn^2＋ by raw and autoclaved Rocella phycopsis
%A Emine Yaln
%A Kültiin avuolu
%A Kadir Knalolu
%A <br>Emine Yalc??n
%A K¨ultiˇgin C
%A avus?oˇglu
%A Kadir K?nal?oˇglu
%J 环境科学学报(英文版)
%D 2010
%I 
%X The behavior of Cu2+ and Zn2+ biosorption onto raw and modified Roccella phycopsis from aqueous solutions was studied. Modification process was applied by autoclavation at 121°C for 30 min. The e ects of pH, initial metal concentration and biosorbent dosage were investigated. The maximum Cu2+ biosorption was achieved at pH 5.0 and the maximum biosorption capacities of 31.5 and 37.8 mg/g were recorded for raw and modified biosorbent, respectively. In the case of Zn2+ biosorption, maximum biosorption capacities were obtained at pH 4.0 as 29.1 and 35.3 mg/g for raw and modified biosorbent, respectively. Biosorption of Zn2+ and Cu2+ on all form of R. phycopsis increased much quickly with increasing initial metal concentrations from 10 to 100 mg/L. After modification process, probable changes in the surface polarity of raw and modified R. phycopsis were investigated by contact angle measurements. As expected, R. phycopsis has a polar surface and shows a highest contact angle with water, while after autoclavation water contact angle of R. phycopsis was significantly decreased from 47.5 to 34.4 .
%K biosorption
%K Roccella phycopsis
%K polarity
%K contact angle measurement<br>生物吸附剂
%K 锌吸附
%K 原料
%K 接触角测量
%K 铜
%K 蒸压
%K 表面极性
%K 改造过程
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=86F4BA28213008498F21F6097EE14235&yid=140ECF96957D60B2&vid=BC12EA701C895178&iid=38B194292C032A66&sid=4C2B9916B58305BE&eid=F4BDB5452F9F5642&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=4&reference_num=22