Adsorption of heavy metals with dried aerobic granular sludge

doi:10.11894/1005-829x.2013.33(10).40

INDUSTRIAL WATER TREATMENT ›› 2013, Vol. 33 ›› Issue (10): 40-43. doi: 10.11894/1005-829x.2013.33(10).40

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Adsorption of heavy metals with dried aerobic granular sludge

Li Shu, Hu Xuewei, Nguyen Dinh Trung, Jiang Meng, Li Yuan, Ning Ping

Institute of Envionmentul Science and Engineering,Kunming University of Science and Technology，Kunming 650500，China

Received:2013-06-13 Online:2013-10-20 Published:2013-10-29

干燥好氧颗粒污泥对重金属的吸附研究

李姝, 胡学伟, Nguyen Dinh Trung, 江孟, 李媛, 宁平

昆明理工大学环境科学与工程学院.云南昆明650500

通讯作者: 胡学伟，电话:13769153307E-mail:huxuewei.kmust@gmail.com E-mail:huxuewei.kmust@gmail.com
作者简介:李妹(1989-), 硕士研究生, E-mail : lishu924C@163.com
基金资助:
国家自然科学基金项目(50908109,51178208);昆明理工大学分析测试基金项目(2011302)

Abstract

Abstract:

Dried and inactive aerobic granular sludge has been used for the adsorption of Pb²⁺，Cu²⁺ and Cd²⁺in water. The experimental results show that when the pH of solution is 5.0，adsorption time 20 min，and the initial con- centrations of heavy metal ions , Pb²⁺，Cu²⁺and Cd²⁺ are 0-40 mg/L respectively , the dried aerobic granular sludge has the best adsorption effect on the three kinds of heavy metals. The adsorption process is more in accordance with Langmuir isotherm equation. According[()single-metal adsorption system，the adsorptive capacity for the three kinds of heavy metals ions follows the order of Cd²⁺>Cu²⁺>Pb²⁺. However, in coexisting adsorption system , the adsorption capacity for the three kinds of heavy metal ions follows the order of Pb²⁺>Cu²⁺>Cd²⁺.

Key words: aerobic granular sludge, heavy metal, adsorption, coexisting system

摘要：

采用经干燥处理后失去活性的好氧颗粒污泥对水中的Pb²⁺、Cu²⁺和Cd²⁺进行吸附试验研究。试验结果表明:当溶液pH为5.0,吸附时间为20 min,Pb²⁺、Cu²⁺和Cd²⁺的初始质量浓度各为0~40 mg/L时,干燥好氧颗粒污泥对3种重金属的吸附效果均最好;吸附过程更加符合Langmuir等温吸附方程;在单一吸附体系中,吸附剂对3种重金属离子的吸附能力依次为Cd²⁺>Cu²⁺>Pb²⁺;在共存吸附体系中,吸附剂对3种重金属离子的吸附能力依次为Pb²⁺>Cu²⁺>Cd²⁺。

关键词: 好氧颗粒污泥, 重金属, 吸附, 共存体系

CLC Number:

X703

Li Shu, Hu Xuewei, Nguyen Dinh Trung, Jiang Meng, Li Yuan, Ning Ping. Adsorption of heavy metals with dried aerobic granular sludge[J]. INDUSTRIAL WATER TREATMENT, 2013, 33(10): 40-43.

李姝, 胡学伟, Nguyen Dinh Trung, 江孟, 李媛, 宁平. 干燥好氧颗粒污泥对重金属的吸附研究[J]. 工业水处理, 2013, 33(10): 40-43.

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