摘要
通过添加Mg^2+对羟基磷灰石(HAp)进行改性,制备出Mn^2+吸附剂Mg-HAp,并探讨Mg-HAp对Mn^2+的吸附特性。结果表明,75%Mg-HAp对Mn^2+的吸附效果最好,其对Mn^2+的吸附反应符合Langmuir方程,为吸热的单分子层均匀吸附反应;吸附动力学数据拟合结果表明吸附反应符合准二级吸附方程,为多种行为共同作用的化学反应。当75%Mg-HAp在煤矸石中的掺杂量大于5%,养护7 d后,煤矸石中的Mn^2+已被全部固定。
The hydroxyapatite(HAp)was modified by adding Mg^2+.And the Mg-HAp adsorbent was prepared.the adsorption characteristics of Mg-HAp was discussed.The results showed that 75%Mg-HAp had the best adsorption effect on Mn^2+.The adsorption reaction of 75%Mg-HAp to Mn^2+ was more consistent with the Langmuir equation,and it was an endothermic monolayer homogeneous adsorption reaction.The adsorption reaction was more in accordance with the quasi-second-order adsorption equation,which was a chemical reaction with multiple behaviors.When the content of 75%Mg-HAp in coal gangue was more than 5% and curing for 7 days,all Mn^2+ in coal gangue had been adsorbed.
作者
张茜
刘方
杨爱江
朱健
杨文弢
Zhang Qian;Liu Fang;Yang Aijiang;Zhu Jian;Yang Wentao(College of Resources and Environmental Engineering,Guizhou University,Guiyang 550025,China)
出处
《工业水处理》
CAS
CSCD
北大核心
2021年第1期61-66,共6页
Industrial Water Treatment
基金
国家自然科学基金项目(41661094)
贵州省科技计划项目(黔科合平台人才[2017]5788号)。
