Graduate School of Environmental Earth Science, Hokkaido University, Sapporo 060-0810, Hokkaido, Japan.
J Hazard Mater. 2010 Feb 15;174(1-3):776-81. doi: 10.1016/j.jhazmat.2009.09.119. Epub 2009 Sep 30.
The present study investigated the adsorptive ability of carbon materials (C1 and C2) released during the combustion of woody biomass. The physical and chemical properties, adsorption dynamics and adsorption isotherms of the adsorbents were compared with those of commercially available carbon that was powdered and activated. The percent nitrobenzene adsorption from an aqueous solution (nitrobenzene: 50mg/L) after 3h of adsorption using C1 was 92% compared with 81% when using the activated carbon powder. The saturated adsorption amounts of nitrobenzene were 294 mg/g for C1 and 344 mg/g for the activated carbon powder. However, the adsorption equilibrium constant for C1 was approximately 7-fold greater than that of the activated carbon powder. The methylene blue-adsorption capacity of C1 was similar to nitrobenzene adsorption. Thus, the results of the present study confirm that the carbon material resulting from the combustion of woody biomass is an inexpensive and environmentally friendly adsorbent for nitrobenzene.
本研究考察了木质生物质燃烧过程中释放的碳材料（C1 和 C2）的吸附能力。比较了吸附剂的物理化学性质、吸附动力学和吸附等温线与商用粉末状和活化碳的性质。在吸附 3 小时后，从水溶液中（硝基苯：50mg/L）吸附的硝基苯百分比，C1 为 92%，而活性炭粉末为 81%。C1 的硝基苯饱和吸附量为 294mg/g，活性炭粉末为 344mg/g。然而，C1 的吸附平衡常数大约是活性炭粉末的 7 倍。C1 的亚甲基蓝吸附容量与硝基苯吸附相似。因此，本研究的结果证实，木质生物质燃烧产生的碳材料是一种廉价且环保的硝基苯吸附剂。
