An effective technology for utilizing vinegar lees （VL）, a biomass waste generated during its production, is much needed in China due to the huge consumption of vinegar. This study investigates the preparation of po...An effective technology for utilizing vinegar lees （VL）, a biomass waste generated during its production, is much needed in China due to the huge consumption of vinegar. This study investigates the preparation of porous carbon （PC） from VL, now reporting on the adsorption capability of PC in removing phenol from its aqueous solution. The preparation of PC consists of carbonization of VL in N2 and activation in CO2. The results show that the optimal activation temperature and time in CO2 for VL char carbonized at 800 ℃ were 875 ℃ and 1 h, respectively. The PC prepared was found to have large specific surface area and micropore volume, with an adsorptive capacity for phenol from its aqueous solution much higher than that of commercial coconut shell activated carbon （CSAC）. Adsorption of phenol from its aqueous solution by the VL-based PC was found to follow the isothermal Langmuir equation.展开更多
基金the National High-Tech Research and Development Program of China(2009AA02Z209)The National Key Technology Development Programs(2009BAC64B05 and 2010BAC66B01)+2 种基金the National Natural Science Foundation of China(21006110 and 21006114)State Key Laboratory of Coal Combustion(FSKLCC0910)for their supports on related fundamental studiesthe Young Teacher Scientific Research Cultivation Foundation of Xinjiang(XJEDU2011S03)
文摘An effective technology for utilizing vinegar lees （VL）, a biomass waste generated during its production, is much needed in China due to the huge consumption of vinegar. This study investigates the preparation of porous carbon （PC） from VL, now reporting on the adsorption capability of PC in removing phenol from its aqueous solution. The preparation of PC consists of carbonization of VL in N2 and activation in CO2. The results show that the optimal activation temperature and time in CO2 for VL char carbonized at 800 ℃ were 875 ℃ and 1 h, respectively. The PC prepared was found to have large specific surface area and micropore volume, with an adsorptive capacity for phenol from its aqueous solution much higher than that of commercial coconut shell activated carbon （CSAC）. Adsorption of phenol from its aqueous solution by the VL-based PC was found to follow the isothermal Langmuir equation.
