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Potentiality of open burnt clay as an adsorbent for the removal of Congo red from aqueous solution
Article 16: Volume 4, Number 4, Autumn 2007, Pages 525-532 (8) XML PDF (184 K)
Authors
M. A. Mumin; M. M. R. Khan; K. F. Akhter; M. J. Uddin
Abstract
Open burnt clay was studied as a potential adsorbent for the adsorption of Congo red (a reactive dye) from aqueous solution. The effect of contact time, pH, adsorbent dosage and temperature were studied. It was observed that the amount of Congo red retained increase with decreasing pH and increasing initial concentration. Removal percentage at pH 2 and 3 are almost same. The adsorption capacity of regenerated burnt clay was showed more than 98 % recovery of the adsorption efficiency of initial virgin adsorbent. The equilibrium data were described well by both Langmuir and Freundlich isotherm model. The adsorption capacity of some natural adsorbents, namely rice husk, wood charcoal, tea waste etc. were also investigated and compared with that of open burnt clay.
Keywords
Adsorption; Congo red; Open burnt clay; Wastewater
Main Subjects
Aqueous solution; Adsorbent; Congo red; Burnt clay
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