Removal of Reactive-dyes from Textile Plant Effluents Using Polyvinyl Alcohol-coated Active Carbon obtained from Sesame Seeds

Document Type : Research Paper


1 Former Graduate Student, Dept. of Chemistry, Semnan University, Semnan, Iran

2 Ass. Prof., Dept. of Chemistry, Semnan University, Semnan, Iran

3 Assoc. Prof., Dept. of Chemistry, University of Yazd


In this study, the adsorption of active carbon derived from waste sesame seeds coated with polyvinyl alcohol (AC/PVA) was investigated for removing red 198 and blue 19 reactive dyes from textile effluents. The batch process was carried out to identify such parameters as pH, adsorbent dose, contact time, and initial dye concentration involved in the dye removal adsorption capacity of AC/PVA. Also, batch kinetic and isotherm experiments were conducted. Results indicated that the maximum dye removal was obtained in an acidic pH over 90 min of contact time and that adsorption rates followed the pseudo-second-order kinetics. Blue and red dye concentrations were determined using the spectrophotometric method at 590 and 517 nm, respectively. It may be concluded that AC/PVA is capable of removing blue and red reactive dyes and can be used as an efficient, cheap, and accessible adsorbent for treating textile effluents.


Main Subjects

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