粉煤灰综合利用 2016 NO.5FLYASHCOMPREHENSIVEUTILIZATION 专题研究
粉煤灰合成沸石对重金属铅与镍的吸附性能研究* Adsorption of Heavy Metal Lead and Nickel by Zeolite Synthesized from Fly Ash
程婷，陈晨²，许文静'，干方群，吴伟3 （1.江苏城市职业学院城市科学系，江苏南京210017;2.江苏科技大学环境与化学工程学院，江苏镇江212018； 3.江苏省环境科学研究院环境工程重点实验室，江苏南京210036) 摘要：利用粉煤灰合成的沸石吸附混合重金属Ni"与Pb²”，考察吸附剂量、初始pH、反应温度与反应时间对其竞 争吸附效果的影响，探讨沸石吸附Ni”与Pb”"的吸附动力学。
结果表明：随着吸附剂量的逐渐增大，沸石对Ni”与Pb²
二级动力学模型。
关键词：粉煤灰；重金属；铅；镍；沸石；竞争吸附 中图分类号：X52文献标识码：A文章编号：1005-8249(2016)05-0012-05 Cheng Ting', Chen Chen²， Xu Wenjing'， Gan Fangqun', WuWei （1.Department of City Science,Jiangsu City Vocational College，Nanjing 210017; 2.School of Environmental and Chemical Engineering,Jiangsu University of Science and Technology,Zhenjang 212018; 3. Jiangsu Provincial Academy of Environmental Science,Key Laboratory of Environmental Engineering, Nanjing 210036) AbstractThe experiments were conducted to examine the adsorption ofmixed heaymetalsNi andPb²through snthesizing zelite frm y ash.headsrben enital Handreactioeraue dreatmewereetigatedt studthmpetivedtietf ns.The adt kinti quto was al disdTh reults shwed that, wih theeasing fadsret dageeadrptl rate fNanPbysthzeliteaprodnthtraed adpiityedgallhetiad sequence of lead ion and nickel ion was Pb>Ni in the whole adsorption process The initial pH had significant effct on the removal of Ni²* and Pb2. In acidic environment, the adsorption of Pb²* in mixed heavy metals inhibited the adsorption of Ni².With the increasing of reaction temperature and reaction time, the aorption removal rate forNi² and Pb²was improved continuusly.The adsrptio removal rate forey metalPb²washiherthan N²indiferent reaction tmperathe adsoptin reationfrmixed heaymetal ions fNi²and Pb²mathd t the pseudo-second class reaction kinetics model. Key words:coal fy ash; heavy metal; lead; nickel; zeolite; adsorption
重金属污染中毒性较大的一种。
铅常被用作原料应用 *基金项目：国家自然科学基金资助项目（）；江苏省高校于农药、蓄电池、电镀、颜料、橡胶、燃料等制造业。
铅 自然科学研究项目（14KJD610002）；江苏省环境工程重点实验室科研及其化合物侵入途径主要是呼吸道与消化道，会对人 开放基金课题（KF2014002）；江苏省高校自然科学研究项目体健康产生极其不利的影响，其被列...
