Adsorption of methyl red by water-hyacinth (Eichornia crassipes) biomass

被引：15
|
作者：
Tarawou, Temi
Horsfall, Michael, Jr.
Vicente, Jose L.
机构：
[1] Univ Port Harcourt, Dept Pure & Ind Chem, Port Harcourt, Nigeria
[2] Natl Univ La Plata, Fac Ciencias Exactas, Inst Invest Fisicoquim Teor & Aplicadas, RA-1900 La Plata, Argentina
来源：
CHEMISTRY & BIODIVERSITY | 2007年 / 4卷 / 09期
关键词：
D O I：
10.1002/cbdv.200790182
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The surface characteristics and adsorbent properties of biomass, obtained from low-cost and environmentally problematic water hyacinth. were determined. Optimum conditions for the elimination of the industrial dye Methyl Red (1) from aqueous solution were established by means of a batch adsorption technique. The ultimate adsorption capacity of water-hyacinth biomass in terms of the elimination of 1 was calculated from a Langmuir-type isotherm as 8.85 x 10(-2) mol g(-1) at 30 degrees and at an optimum solution pH of 8.0. Dye elimination was found to be associated with strong electrostatic forces (physisorption). the overall process being slightly endergonic (Delta G>0). Our study shows that water hyacinth has a great potential of removing color from wastewater and other dye-polluted aquatic systems.
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页码：2236 / 2245
页数：10
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