%0 Journal Article
%T Comparison on Desorptive Behavior of Copper in Phaeozem and Burozem<br>重金属铜在黑土和棕壤中解吸行为的比较
%A YU Ying
%A ZHOU Qi-xing
%A <br>于颖
%A 周启星
%J 环境科学
%D 2004
%I 
%X Desorptive behavior of Cu2+ from phaeozem and burozem was studied and compared using the batch method. The results indicated that Cu2+ desorbed from phaeozem tested had a longer lag period than that from burozem. When adsorbed Cu2+ for phaeozem was lower than 729.00 mg·kg-1 (Cu2+ concentration was lower than 40 mg·L-1), and on burozem was lower than 393.29 mg·kg-1 (Cu2+ concentration was lower than 20 mg·L-1), adsorbed Cu2+ was hardly desorbed. Meanwhile, the desorption ratio of Cu2+ from the two soils were both low, especially for phaeozem. In the range of Cu2+ concentration used in the experiments, the desorption rate maximums of Cu2+ for phaeozem and burozem were respectively 6.60% and 13.56%. Freundlich equation could best describe desorption isotherm processes of Cu2+ from the two soils. Adsorbed Cu2+ on soils was desorbed so fast from phaeozem and burozem that the desorption equilibrium could be reached only after 40 min desorption. The best model to describe Cu2+ desorption kinetics was two-constant equations, followed by the Elovich equation.
%K Cu2+
%K desorption
%K thermodynamic process
%K kinetic process
%K phaeozem
%K burozem<br>Cu2+
%K 解吸
%K 热力学
%K 动力学
%K 黑土
%K 棕壤
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=E681933300BC090C&yid=D0E58B75BFD8E51C&vid=C5154311167311FE&iid=CA4FD0336C81A37A&sid=1F199509C0B6C4D6&eid=7C72DBC13F2D71EC&journal_id=0250-3301&journal_name=环境科学&referenced_num=23&reference_num=12