Removal of natural organic polyelectrolytes by adsorption onto tobermorite

被引：38

作者：

Kaneco, S ^{[1
]}

Itoh, K

Katsumata, H

Suzuki, T

Masuyama, K

Funasaka, K

Hatano, K

Ohta, K

机构：

[1] Mie Univ, Dept Chem Mat, Fac Engn, Tsu, Mie 5148507, Japan

[2] Mie Univ, Environm Preservat Ctr, Tsu, Mie 5148507, Japan

[3] Osaka City Inst Publ Hlth & Environm Sci, Tsu, Mie 5140819, Japan

[4] CLION Co Ltd, Water Environm Dept, Owariasahi, Aichi 1880052, Japan

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2003年 / 37卷 / 07期

关键词：

D O I：

10.1021/es020816v

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Natural organic polyelectrolytes, such as humic and fulvic acids, were removed by adsorption onto silicate rocks. Tobermorite, zeolite, and molecular sieves 5A were used as the adsorbents. Tobermorite was more efficient by 40-50% in the removal of fulvic acids, and by 30-50% for humic acid than zeolite or molecular sieves, respectively. Humic acid removal from the solution by adsorption onto silicate rocks took place more readily than fulvic acid removal. From the determined heat of adsorption, the adsorption process in the present study may be chemi-sorption (ligand exchange). Metal/humic acid complexes were effectively removed by adsorption onto tobermorite. Because tobermorite (a silicate rock) can be easily synthesized and obtained commercially, the adsorption method of removal of fulvic and humic acids is superior to their precipitation.

引用

页码：1448 / 1451

页数：4

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