摘要
为了探究膨润土-钢渣复合颗粒对酸性矿山废水中Fe^(2+)的吸附机理,采用宏观、微观实验相结合的方法对复合颗粒处理含Fe^(2+)废水进行了探究,初步揭示了复合颗粒对Fe^(2+)的离子交换、络合反应机理及规律。通过测定复合颗粒处理废水过程中Na^+、Ca^(2+)的释放当量,揭示了复合颗粒对Fe^(2+)的阳离子交换作用主要发生在反应前5~10 min,通过XRD微观测定颗粒层间距变化进一步揭示发生了阳离子交换作用。通过测定不同离子强度下复合颗粒对Fe^(2+)的去除量,确定在反应前300 min均有外表面络合作用。
In order to study the adsorption mechanism on the treatment of acid mine drainage containing Fe2＋ by bentonite-steel slag composite particles, this paper combined macro and micro experiments to explore the treatment of Fe2＋ by composite particles. And preliminary revealed the mechanism and principles of ion-exchange action and complexation. Through measure the emitting quantity of Na＋ Ca2＋ from composite particles in the treatment of wastewater, the results show that ion-exchange action happened in the first 5 to 10 minutes. Ion-exchange action had been proved by XRD. Through measure the relationship of removal amount of Fe2＋ in different ionic strength, the surface comolexation was found in the first 300 min.
出处
《非金属矿》
CAS
CSCD
北大核心
2016年第4期43-45,70,共4页
Non-Metallic Mines
基金
国家自然科学基金(51174267
51474122)
辽宁省"百千万人才工程"项目(2014921069)
辽宁省高校科研立项计划(2008300)
