[1]李秋蓉,欧阳通,张萍,等.Nano-HCO吸附剂的制备及其除As(Ⅲ)性能[J].华侨大学学报(自然科学版),2009,30(6):677-680.[doi:10.11830/ISSN.1000-5013.2009.06.0677]
　LI Qiu-rong,OUYANG Tong,ZHANG Ping,et al.Preparation of Nano-Hydrous Ceric Oxide and Its Adsorption Characteristics of Arsenite[J].Journal of Huaqiao University(Natural Science),2009,30(6):677-680.[doi:10.11830/ISSN.1000-5013.2009.06.0677]
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Nano-HCO吸附剂的制备及其除As(Ⅲ)性能()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第30卷
期数:
2009年第6期
页码:
677-680
栏目:
出版日期:
2009-11-20

文章信息/Info

Title:
Preparation of Nano-Hydrous Ceric Oxide and Its Adsorption Characteristics of Arsenite
文章编号:
1000-5013(2009)06-0677-04
作者:
李秋蓉; 欧阳通; 张萍; 种珊
厦门大学海洋与环境学院
Author(s):
LI Qiu-rong;  OUYANG Tong;  ZHANG Ping;  CHONG Shan
College of Oceanography and Environmental Science, Xiamen University, Xiamen 361005, China
关键词:
纳米级水合氧化铈;  As(Ⅲ);  地热水;  吸附等温线
Keywords:
nano-sized hydrous ceric oxide;  As(Ⅲ);  geothermal water;  adsorption isotherm
分类号:
X703
DOI:
10.11830/ISSN.1000-5013.2009.06.0677
文献标志码:
A
摘要:
采用溶胶沉淀结合超声分散处理的方法,制备平均粒径为70 nm,比表面积为212 m2.g-1的纳米级水合氧化铈(Nano-HCO)吸附剂.在pH值为4~10,初始As(Ⅲ)质量浓度为10 mg.L-1,吸附剂投加量为1.0 g.L-1的反应条件下,可在2 h内将溶液中As(Ⅲ)质量浓度降低到0.01 mg.L-1以下.Nano-HCO吸附剂对砷的吸附等温线服从Langmuir方程,对应不同pH值,其对As(Ⅲ)的吸附容量较未经超声分散处理的水合氧化铈提高29%~141%,且水温的升高有助于增加As(Ⅲ)的吸附程度.
Abstract:
Nano-sized hydrous ceric oxide(Nano-HCO) with an average diameter size of 70 nm and specific surface area 212 m2·g-1 were prepared using sol-precipitation method in conjunction with ultrasonic dispersion.At an initial As(Ⅲ) concentration of 10 mg·L-1,solution pH range 4~10,adsorbent dose of 1.0 g·L-1,a final concentration of As(Ⅲ) could be decreased below 0.01 mg·L-1,within 2 h.The isotherms fit well in the Langmuir model of adsorption,and with the studied pH conditions,the adsorption capacity of As(Ⅲ) on Nano-HCO was increased by 29% to 141% compared with the HCO samples prepared without ultrasonic dispersion treatment.The extent of As(Ⅲ) adsorption was enhanced by increasing ambient temperature.

参考文献/References:

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备注/Memo

备注/Memo:
福建省自然科学基金计划资助项目(D0510005); 厦门市科技计划项目(3502Z20083001)
更新日期/Last Update: 2014-03-23