Abstract
In present study maize cob was used as adsorbent for colour removal from homogeneous system of textile dye and textile effluent as heterogeneous system. Adsorption kinetics were studied using the parameters such as dye concentration, adsorbent dose, agitation time and pH. Adsorption followed first order expression. The equilibrium adsorption data followed Freundlich isotherm. Maize Cob was found efficient in both homogeneous as well as heterogeneous system. Adsorption was nearly quantitative at pH 2.0. Around 99.36 % colour was removed from 10 ppm dye solution by using 600 mg/lt of maize cob at pH 2.0. The findings of elemental studies by XRF- scan and SEM studies were correlated with the colour removal capacity of maize cob.
In heterogeneous system also acidic pH was found more effective in colour removal. The BOD, oil & grease and TSS were found below detectable limit, while COD and TDS were found 24.3 mg/lt and 152 mg/lt respectively at 150 mg/lt dose of maize cob.
In present study maize cob was used as adsorbent for colour removal from homogeneous system of textile dye and textile effluent as heterogeneous system. Adsorption kinetics were studied using the parameters such as dye concentration, adsorbent dose, agitation time and pH. Adsorption followed first order expression. The equilibrium adsorption data followed Freundlich isotherm. Maize Cob was found efficient in both homogeneous as well as heterogeneous system. Adsorption was nearly quantitative at pH 2.0. Around 99.36 % colour was removed from 10 ppm dye solution by using 600 mg/lt of maize cob at pH 2.0. The findings of elemental studies by XRF- scan and SEM studies were correlated with the colour removal capacity of maize cob.
In heterogeneous system also acidic pH was found more effective in colour removal. The BOD, oil & grease and TSS were found below detectable limit, while COD and TDS were found 24.3 mg/lt and 152 mg/lt respectively at 150 mg/lt dose of maize cob.
This paper was presented in National Conference of Environment Conservation – 1st – 3rd Sep. 2006 at BIT – Pillani, Rajasthan, India. Full paper can be made available on request.
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