Adsorption of Methyl Red by Water-Hyacinth (Eichornia crassipes) Biomass
✍ Scribed by Temi Tarawou; Michael Horsfall Jr.; José L. Vicente
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 142 KB
- Volume
- 4
- Category
- Article
- ISSN
- 1612-1872
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✦ Synopsis
Abstract
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 8.85×10^−2^ mol g^−1^ at 30° 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 (Δ__G__>0). Our study shows that water hyacinth has a great potential of removing color from wastewater and other dye‐polluted aquatic systems.