Adsorption of chlorinated volatile organic compounds using activated carbon made from Jatropha curcas seeds

作者：Hsu, Shih-Hong; Huang, Chin-Sheng; Chung, Tsair-Wang^*; Gao, Shun

来源：Journal of the Taiwan Institute of Chemical Engineers, 2014, 45(5): 2526-2530.

DOI：10.1016/j.jtice.2014.05.028

• Jatropha curcas seeds
• Activated carbon
• Adsorption
• Isotherm
• Volatile organic compounds

In the present study, Jatropha curcas seeds (JS) were used as the raw material for the production of activated carbon by simple thermo-chemical activation with NaOH as a chemical activating agent. Various chlorinated volatile organic compounds (carbon tetrachloride, chloroform, dichloromethane, tetrachloroethylene, trichloroethylene, and chlorobenzene) were tested for the single-component adsorption study using the gravimetric adsorption method. The study focused on the adsorption of chlorinated volatile organic compounds, and the effect of the number of chlorine atoms in the molecule to the adsorption uptake. Results from the experiments showed that adsorption by activated carbon increased with increasing number of chlorine atoms and hence, with increasing molecular weight. There is, however, no significant difference between the adsorption of molecules with the same number of chlorine atoms but with different bond orders. It indicates that the influence of molecular weight is more important than the existence of double bonds within the molecule. The reusability of the activated carbon was proved when no significant decrease in its adsorption capacity was observed even after the fourth time of regeneration.

• 出版日期2014-9
• 单位四川农业大学