Journal
ENVIRONMENTAL GEOLOGY
Volume 41, Issue 3-4, Pages 269-273Publisher
SPRINGER
DOI: 10.1007/s002540100411
Keywords
red mud; adsorption; isotherms; dyes
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Waste red mud obtained during the processing of bauxite ore has been used for the adsorption of acid violet at different initial dye concentrations (10-40 mg/L), agitation time, adsorbent dosages (0.05-1.15 g/50 mL) and pH (2-11). Adsorption obeyed both Langmuir and Freundlich isotherms. Quantitative removal of dye was observed at pH 4.1. Desorption studies show that the adsorption is mainly due to ion-exchange.
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