无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2011, Vol. 43 ›› Issue (12): 16-.

• 论文 • 上一篇    下一篇

掺铝α-FeOOH纳米微粒对铅离子吸附性能研究

刘宏伟1,卢造权1,张海英2,陈月红3,周愉1   

  1. 1.庆阳市环境监测站,甘肃庆阳 745000;2.西北师范大学;3.大同自来水公司
  • 发布日期:2011-12-06

Adsorption performance of Al-doped-FeOOH nanoparticles to Pb2+

Liu Hongwei1,Lu Zaoquan1,Zhang Haiying2,Chen Yuehong3,Zhou Yu1   

  1. 1.Qingyang City Environmental Monitoring Station,Qingyang 745000,China;2.Northwest Normal University;3.Datong Waterwoks Company
  • Published:2011-12-06

摘要: 采用金属离子化学共沉淀法制备掺铝α-FeOOH纳米微粒,通过透射电镜(TEM)和X射线衍射(XRD)对其进行表征,并研究了其对铅离子(Pb2+)的吸附性能。结果表明:制备的掺铝微粒为α-FeOOH,呈针状,是纳米级。Pb2+初始质量浓度、吸附时间对吸附效果均有不同程度的影响。掺铝α-FeOOH纳米微粒对Pb2+的吸附符合Langmuir模型,理论最大吸附量qm为 5.043 mg/g。吸附过程可以用准二级动力学方程进行描述,准二级动力学速率常数k为0.088 g/(mg•min),平衡吸附量理论计算值qe为5.405 5 mg/g。

关键词: 纳米&alpha, -FeOOH, Pb2+, 吸附, 水处理

Abstract: Al-doped α-FeOOH nanoparticles were prepared by metal-ion chemical coprecipitation method.Perfor-mancesof Al-doped α-FeOOH nanoparticles were characterized by transmission-electronic microscope and X-ray diffractometer,then its adsorption efficiency to Pb2+ was researched.Results showed that the prepared nanoparticles were α-FeOOH with nano-sized needle-like shape;and the adsorption efficiency was influenced by the initial mass concentration of Pb2+ and adsorption time in different degrees.Adsorption of Pb2+ by Al-doped α-FeOOHnanoparticles followed Langmuir isotherm model,and the maximum adsorption capacity qm was 5.043 mg/g. All absorption processes could be described by pseudo-second-order kinetics equation,in which the values of parameter kand qewere 0.088 g/(mg•min) and 5.405 5 mg/g respectively.

Key words: nano-sized &alpha, -FeOOH, Pb2+, adsorption, water treatment

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