摘要
利用油茶果壳直接炭化法制备油茶果壳炭,其BET比表面积和孔容积测定结果分别为1 244 m2·g-1和1.02cm3·g-1,SEM的分析表明,油茶果壳炭含有不同孔径的孔隙和裂缝,有利于油烟这种含有复杂组分污染物分子的吸附作用;等温吸附实验结果表明,低温低油烟浓度有利于油茶果壳炭对油烟的吸附作用,吸附量可达378.79 mg·g-1,其吸附等温线符合Langmuir吸附模型,热力学参数ΔG0、ΔH0、ΔS0均为负值,表明油茶果壳炭对油烟的吸附是一个自发的放热的物理过程。
Camellia oleifera shell was used for the production of C. oleifera shell carbon（ COSC） via direct carbonization. The BET surface area and pore volume of COSC were determined to be 1 244 m2·g- 1and 1. 02cm3·g- 1,respectively. Scanning electron microscopy revealed an abundance of pores and cracks with different sizes in COSC,which was beneficial for the absorption of complicated components and pollutants from cooking oil fume. The adsorption isotherm showed that COSC is more effective in the absorption of low-concentration pollutants from cooking oil fume at low temperatures,and the adsorption amount can reach up to 378. 79 mg·g- 1.The adsorption isotherm fitted adequately with the Langmuir model. All the calculated thermodynamic parameters such as ΔG0,ΔH0,and ΔS0had negative values,which indicated that the process of cooking oil fume absorption by COSC was spontaneous and exothermic.
出处
《环境工程学报》
CAS
CSCD
北大核心
2016年第8期4387-4390,共4页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金资助项目(51468011
51564009)
广西高校专利倍增计划项目(2013ZL06
2013ZL062)
关键词
油茶果壳炭
油烟
吸附等温线
热力学参数
C.oleifera shell carbon COSC
cooking oil fume
adsorption isotherm
thermodynamic parameters
