首页 | 本学科首页   官方微博 | 高级检索  
     检索      

沸石及其改性材料硅炭素处理含铅废水
引用本文:赵庆良,夏小青,王广智,张天明,杨尔倜.沸石及其改性材料硅炭素处理含铅废水[J].环境科学研究,2011,24(9):1023-1028.
作者姓名:赵庆良  夏小青  王广智  张天明  杨尔倜
作者单位:1.哈尔滨工业大学市政环境科学与工程学院, 黑龙江 哈尔滨 150090
基金项目:哈尔滨科技型中小企业技术创新基金(2010FG4Cs022)
摘    要:对沸石及其改性材料硅炭素(ANJ.SiC)处理含铅废水进行优化研究,结果表明,当废水中ρ(Pb)为10 mg/L,pH>4.62,吸附剂投加量为5 g/L,25 ℃处理30 min时,沸石及硅炭素对铅的去除率均可达到90%以上,且硅炭素的处理效果优于沸石.分别采用5种再生剂对饱和的沸石和硅炭素进行再生,NaOH再生效果最佳;经过5次再生,2种吸附剂的饱和容量呈现不同的衰减,硅炭素的再生效果较好,饱和容量从33.9 mg/L衰减到20.5 mg/L.通过扫描电镜(SEM)对沸石和硅炭素吸附前后的表面形貌进行观察发现,二者的除铅机理不尽相同,沸石主要是通过离子交换作用,使铅进入其结构内部;沸石经过改性,表面发生变化,硅炭素主要是通过材料表面与铅离子的反应达到除铅目的. 

关 键 词:    沸石    硅炭素    再生
收稿时间:2011/1/3 0:00:00
修稿时间:2011/2/20 0:00:00

Lead-Laden Wastewater Treatment with Zeolite and a Modified Material ANJ.SiC
ZHAO Qing-liang,XIA Xiao-qing,WANG Guang-zhi,ZHANG Tian-ming and YANG Er-ti.Lead-Laden Wastewater Treatment with Zeolite and a Modified Material ANJ.SiC[J].Research of Environmental Sciences,2011,24(9):1023-1028.
Authors:ZHAO Qing-liang  XIA Xiao-qing  WANG Guang-zhi  ZHANG Tian-ming and YANG Er-ti
Institution:1.School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China2.School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150091, China3.School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150092, China4.Harbin Xunchi Environmental Protection Equipment Corporation, Harbin 150000, China
Abstract:Optimization studies for lead-laden wastewater treatment with zeolite and a modified material ANJ.SiC were conducted.The experimental results showed that over 90% of the lead could be removed from the wastewater by using these adsorbents under the conditions of initial lead concentration 10 mg/L,pH > 4.62,ratio of absorbent to absorbate 5 g/L,reaction time 30 min,and temperature 25 ℃.The ANJ.SiC could remove more lead than the zeolite.Of the five regenerant combinations,NaOH alone was the best for regenerating the saturated zeolite and ANJ.SiC.After regenerating five times,the saturation capacities of the two adsorbents were decreased to different degrees.The regeneration effect of ANJ.SiC was better,with its saturated capacity decreasing from 33.9 mg/L to 20.5 mg/L.By examining the surface topography of the raw and saturated adsorbents with a Scanning Electronic Microscope (SEM),it was found that the two adsorbents differed in the mechanism of removing lead.Lead removal with zeolite was mainly through ion exchange,with the lead being entrapped into its structure.After the modification of the zeolite,the surface of the material was changed.Lead removal with ANJ.SiC was mainly through the surface reaction. 
Keywords:lead  zeolite  ANJ  SiC  regeneration  
本文献已被 CNKI 等数据库收录!
点击此处可从《环境科学研究》浏览原始摘要信息
点击此处可从《环境科学研究》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号