Title :
Study on adsorption of molasses effluent by activated carbon
Author :
Liang Zhen ; Tang Yafei ; Bao Rendong ; Cheng Shan
Author_Institution :
Sch. of Environ. & Civil Eng., Wuhan Inst. of Technol., Wuhan, China
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.
Keywords :
activated carbon; adsorption; effluents; organic compounds; pH; temperature; CAC; Freundlich adsorption isotherms; GAC; Langmuir adsorption isotherms; PAC; absorbent doses; adsorption temperature; adsorption time; cylindrical activated carbon; decolorization capacity; decolorization rates; equilibrium adsorption capacity; granular activated carbon; influential factors; initial pH; molasses effluent; optimal operation parameters; optimum dosage; organics; powered activated carbon; Carbon; Compounds; Effluents; Electronic mail; Filtration; Lakes; Wastewater; adsorption; adsorption isotherm; decolorization; molasses wastewater;
Conference_Titel :
Mechanic Automation and Control Engineering (MACE), 2011 Second International Conference on
Conference_Location :
Hohhot
Print_ISBN :
978-1-4244-9436-1
DOI :
10.1109/MACE.2011.5988627
