School of Chemical Engineering, Engineering Campus, Universit Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia.
Bioresour Technol. 2012 Jan;103(1):398-404. doi: 10.1016/j.biortech.2011.09.116. Epub 2011 Oct 2.
Preparation of activated carbon has been attempted using KOH as activating agent by microwave heating from biodiesel industry solid residue, oil palm empty fruit bunch (EFBAC). The significance of chemical impregnation ratio (IR), microwave power and activation time on the properties of activated carbon were investigated. The optimum condition has been identified at the IR of 1.0, microwave power of 600 W and activation time of 7 min. EFBAC was characterized by scanning electron microscopy, Fourier transform infrared spectroscopy and nitrogen adsorption isotherm. The surface chemistry was examined by zeta potential measurement, determination of surface acidity/basicity, while the adsorptive property was quantified using methylene blue as dye model compound. The optimum conditions resulted in activated carbon with a monolayer adsorption capacity of 395.30 mg/g and carbon yield of 73.78%, while the BET surface area and total pore volume were corresponding to 1372 m2/g and 0.76 cm3/g, respectively.
已尝试使用 KOH 作为活化剂，通过微波加热从生物柴油工业固体残余物、油棕空果串 (EFBAC) 制备活性炭。研究了化学浸渍比 (IR)、微波功率和活化时间对活性炭性能的影响。在 IR 为 1.0、微波功率为 600 W 和活化时间为 7 分钟的条件下，确定了最佳条件。通过扫描电子显微镜、傅里叶变换红外光谱和氮气吸附等温线对 EFBAC 进行了表征。通过动电位测量、表面酸度/碱度测定来检查表面化学性质，而通过亚甲蓝作为染料模型化合物来定量吸附性能。最佳条件下制得的活性炭的单层吸附容量为 395.30mg/g，产率为 73.78%，BET 比表面积和总孔体积分别为 1372m2/g 和 0.76cm3/g。
