1. Decolourization of pulp and paper mill effluents using heat-treated coal: a comparison with activated charcoal.
- Author
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Mishra, S. B., Mishra, A. K., and Khan, Mukhtar A.
- Subjects
- *
PAPER mills , *PULP mills , *COLOR removal (Sewage purification) , *ADSORPTION (Chemistry) , *ATMOSPHERIC temperature , *ACTIVATED carbon - Abstract
comparison between activated charcoal and heat-treated coal for decolourization of pulp and paper mill waste water was studied. The heat-treated coal was prepared in an inert atmosphere at 800°C. The adsorption dynamics that include batch contact–time study, kinetics along with adsorption isotherms were carried out. The study shows that heat-treated coal is a suitable adsorbent and can be used for the decolourization of pulp and paper mill effluent streams. The maximum removal was achieved at the initial stages of contact, and the overall adsorption was a slow process. However, the equilibrium concentration in the case of both the adsorbents reaches at almost same time. The linear plot of the Lagergren model shows its applicability and first-order kinetics. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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