Adsorption of humic acid onto chitin and chitosan

被引：0
|
作者：
Ngah, WSW [1 ]
Musa, A [1 ]
机构：
[1] Univ Sains Malaysia, Sch Chem Sci, George Town 11800, Malaysia
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 1998年 / 69卷 / 12期
关键词：
D O I：
10.1002/(SICI)1097-4628(19980919)69:12<2305::AID-APP1>3.0.CO;2-C
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The adsorption of humic acid onto chitin and chitosan has been investigated. The uptake of humic acid from aqueous solution was determined from changes in concentration, as measured by ultraviolet-visible spectroscopy. The decrease in humic acid removal was observed with the increase in pH. A significant uptake of humic acid on both chitin and chitosan was observed. The uptake of humic acid on chitosan was greater than that on chitin. Adsorption isothermal data could be interpreted by the Langmuir and Freundlich equation. Langmuir and Freundlich constants have been determined. The experimental data of the adsorption equilibrium from humic acid solutions correlate well with the Langmuir isotherm equation, as compared to the Freundlich isotherm equation. (C) 1998 John Wiley & Sons, Inc.
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页码：2305 / 2310
页数：6
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