摘要
以石英砂负载羟基磷灰石作为吸附剂,通过静态实验研究了其在不同的pH、投加量、反应时间和初始锰含量等条件下对水溶液中锰的去除效果。结果表明,合成的石英砂负载羟基磷灰石具有较强的吸附性能,能有效去除水溶液中锰。当溶液初始pH为5.0,石英砂负载羟基磷灰石投加量为30 g/L、反应时间240 min,初始Mn质量浓度为5 mg/L的条件下,石英砂负载羟基磷灰石对水溶液中锰的去除率能够达到90%以上;石英砂负载羟基磷灰石对Mn的吸附规律符合Langmuir吸附等温式,吸附过程可用准2级动力学方程(t/q_t)/(min·g^(-1)·mg^(-1))=6.125 min^(-1)t+35.63(R^2=0.999 9)描述。
Based on quartz sand coated hydroxyapatite as adsorbent, the effects ofpH, dosage of reactive material, contact time and initial content of Mn on Mn removal efficiency in aqueous solution were studied in the static experiments. The results showed that the Mn removal rate could reach more than 90%, when the pH of solution, dosage of the reactive materials, contact time and the initial mass concentration of Mn were 5.0, 30 g/L, 240 min and 5 mg/L respectively. The adsorption of Mn by composite followed the Langmuir adsorption isotherm and the process could be described by pseudo-second-order kinetic equation： （t/qt）/（min·g-1·mg-1）=6.125 min-1 t＋35.63 （R2=0.999 9）.
作者
曾云嵘
张卫民
王惠东
郭亚丹
李亦然
ZENG Yunrong ZHANG Weimin WANG Huidong GUO Yadan LI Yiran(State Key Laboratory Breeding Base of Nuclear Resources and Environment, East China University of Technology School of Water Resources and Environmental Engineering, East China University of Technology： Nanehang 330013, China)
出处
《水处理技术》
CAS
CSCD
北大核心
2017年第5期72-75,79,共5页
Technology of Water Treatment
基金
国家自然科学基金资助项目(41562011)
东华理工大学省部共建核资源与环境国家重点试验室培育基地项目(Z201406)
江西省教育厅科技落地计划项目(KJLD13054)
江西省研究生创新基金项目(YC2015-S280)
关键词
负载
石英砂
羟基磷灰石
锰
去除
coated
quartz sand
hydroxyapatite
manganese
removal
