• 关键词：矿水污染水体  铁氧化物颗粒  吸附特征  表面络合模式

• 基金项目：

• 栾兆坤
• 中国科学院生态环境研究中心环境水化学国家重点实验室, 北京　100085

• 刘文新
• 中国科学院生态环境研究中心环境水化学国家重点实验室, 北京　100085

• 汤鸿霄
• 中国科学院生态环境研究中心环境水化学国家重点实验室, 北京　100085

• 摘要：通过现场实测数据与实验室模拟实验相结合,分析研究了受铜矿酸碱矿水污染河流沿程主要江段中铜在水与悬浮颗粒物之间的分配,模拟研究了悬浮沉积颗粒物的主要组份对铜离子的吸附特征。结果表明,污染河段中新生水合氧化铁/铝微粒表面具有显着的吸附作用并控制水中溶解态铜离子浓度。其吸附规律遵循表面络合反应特征并可用简化表面络合模式来描述。

• Abstract：Partitioning of copper between sediments and overlaying water in Dawu Le An River contaminated by acid mine drainage was studied by field investigation and acid dissolution experiment. Simulated absorption experiments were carried out to study the absorption of copper on amorphous iron oxyhyroxide and ore tailing particles. The results showed that the binding of copper onto the surface of amorphous Fe/Al oxyhydeoxides and ore tailing particles regulated the concentrations of dissolved Cu at downstream of Dawu River and its inlet into Le An River. A significant part of adsorbed copper was likely to be associated with amorphous Fe/al oxyhydroxides coated on the surface of ore tailing particles. A simplified surface complexation model can be used to describe the absorption behavior.

• Key words：copper  adsorption  mine  drainage 

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