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2011•Unpublished venueRequires access

Study on adsorption of molasses effluent by activated carbon

Zhen Liang, Yafei Tang, Rendong Bao, Shan Cheng

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Abstract

Adsorption of molasses effluent by activated carbon (AC) was investigated in this study. The effect of AC type on decolorization rates was compared and influential factors such absorbent doses, initial pH, adsorption time and temperature were evaluated. The results shows that the decolorization capacity is in the order of powered activated carbon (PAC) >; granular activated carbon (GAC) >; cylindrical activated carbon (CAC). The optimum dosage was 2 g/L for PAC and 20 g/L for GAC. The optimal operation parameters were set as: initial pH lower than 5, adsorption time in the range of 90-120 min and adsorption temperature lower than 40 oC Adsorption of molasses effluent using PAC and GAC fit Langmuir and Freundlich adsorption isotherms, respectively. The equilibrium adsorption capacity of organics present in the molasses effluent using PAC amounted to 300 mg/g.

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What this paper is about

Adsorption of molasses effluent by activated carbon (AC) was investigated in this study. The effect of AC type on decolorization rates was compared and influential factors such absorbent doses, initial pH, adsorption time and temperature were evaluated. The results shows that the decolorization capacity is in the order of powered activated carbon (PAC) >; granular activated carbon (GAC) >; cylindrical activated carbon (CAC). The optimum dosage was 2 g/L for PAC and 20 g/L for GAC. The optimal operation parameters were set as: initial pH lower than 5, adsorption time in the range of 90-120 min and adsorption temperature lower than 40 oC Adsorption of molasses effluent using PAC and GAC fit Langmuir and Freundlich adsorption isotherms, respectively. The equilibrium adsorption capacity of organics present in the molasses effluent using PAC amounted to 300 mg/g.

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Available abstract

Adsorption of molasses effluent by activated carbon (AC) was investigated in this study. The effect of AC type on decolorization rates was compared and influential factors such absorbent doses, initial pH, adsorption time and temperature were evaluated. The results shows that the decolorization capacity is in the order of powered activated carbon (PAC) >; granular activated carbon (GAC) >; cylindrical activated carbon (CAC). The optimum dosage was 2 g/L for PAC and 20 g/L for GAC. The optimal operation parameters were set as: initial pH lower than 5, adsorption time in the range of 90-120 min and adsorption temperature lower than 40 oC Adsorption of molasses effluent using PAC and GAC fit Langmuir and Freundlich adsorption isotherms, respectively. The equilibrium adsorption capacity of organics present in the molasses effluent using PAC amounted to 300 mg/g.

Key concepts: Adsorption, Effluent, Activated carbon, Freundlich equation, Chemistry, Langmuir, Powdered activated carbon treatment, Carbon fibers

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