当前位置: 首页 > 文章 > 新疆棕漠土无机胶体对Cu~(2+)的吸附特征研究 西北农业学报 2008,17 (5) 220-223
Position: Home > Articles > Study on Absorption of Cu~(2+) by Inorganic Colloid of Brown Desert Soil in Xinjiang Acta Agriculturae Boreali-occidentalis Sinica 2008,17 (5) 220-223

新疆棕漠土无机胶体对Cu~(2+)的吸附特征研究

作  者:
孙红专;陈秋兰;杨剑虹
单  位:
新疆塔里木大学生物技术研究与开发中心;厦门大学环境科学研究中心;西南大学资源环境学院
关键词:
棕漠土;无机胶体;铜吸附;支持电解质浓度
摘  要:
选用采自新疆阿克苏地区典型的棕漠土壤,用模拟吸附方法研究棕漠土无机胶体在不同阴阳离子作用下对Cu2+的吸附特征,得出:棕漠土无机胶体对铜的等温吸附曲线可以用Langmuir等温方程式拟合,解吸后,铜在胶体内的残余量与加入溶液的浓度呈很好的一次函数关系;随着加入支持电解质浓度的增加,胶体对铜的吸附量逐渐减少;不同电解质溶液对土壤无机胶体吸附铜的影响不一样,在Cl-存在下,对铜竞争吸附的影响K+>NH4+>Na+;当支持电解质阳离子浓度相同时,阴离子对胶体吸附铜的影响都为SO42->Cl-
译  名:
Study on Absorption of Cu~(2+) by Inorganic Colloid of Brown Desert Soil in Xinjiang
作  者:
SUN Hong-zhuan1,2,CHEN Qiu-lan3 and YANG Jian-hong4(1.Biological Technology Research and Development Center,Tarim University,Alaer Xinjiang 843300,China;2.Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin,Alaer Xinjiang 843300,China;3.Environmental Science Research Center,Xiamen University,Xiamen Fujian 361005,China;4.College of Resources and Environment,Southwest University,Chongqing 417706,China)
关键词:
Brown desert soil;Inorganic colloid;Cu2+ absorption;Electrolyte strength
摘  要:
This paper chose typical brown desert soil from Aksu,Xinjiang,studied the absorption of Cu2+ by inorganic colloid,the results as follows: Isothermal adsorption curve of copper absorbed by brown desert soil can match with Langmuir equation well,after desorption the relationships between original Cu2+ concentration and remainder Cu2+content in colloid was a linear function.With the increasing of electrolyte strength,the absorption quantity of Cu2+ by colloid decreases gradually;Different compounded negative ion and positive ion have different influence on copper absorbed by colloid.When negative ion is Cl-only in solution,the order of the influence on copper absorption is K+>NH4+ >Na+.SO42-on copper absorption is higher than that of Cl-.

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