Removal of benzene and toluene by carbonized bamboo materials modified with TiO₂
2008
Chuang, Chih Shen | Wang, Ming-Kuang | Ko, Chun-Han | Ou, Chia-Chih | Wu, Chien-Hou
Carbonized moso bamboo (Phyllostachys pubescens) was coated with TiO₂ nanoparticles to enhance its removal efficiency of harmful gases. Carbonized bamboo-TiO₂ composite (CBC) was prepared by heating mixtures of carbonized bamboo powder (CB) and TiO₂ nanoparticles, denoted as CBM, under nitrogen condition. TiO₂ nanoparticle and carbonized bamboo powder were mixed with the mass ratios of 1/1 and 2/1, respectively. At the same mass ratio of TiO₂ to CB, the benzene and toluene removal efficiencies follow the trend: CBC>CBM>CB, which is consistent with the amount of TiO₂ validated by elemental analysis. Sorption mechanism of benzene and toluene by CB, CBM and CBC might belong to hydrophobic-hydrophobic interaction, observed by depletion of untreated bamboo (UB) carbohydrates during carbonization. Sorption kinetics was further analyzed, and optimal correlation was found by fitting with the Elovich kinetic equation.
Показать больше [+] Меньше [-]Ключевые слова АГРОВОК
Библиографическая информация
Эту запись предоставил National Agricultural Library