Removal of benzene and toluene by carbonized bamboo materials modified with TiO2

Chih Shen Chuang; Ming-Kuang Wang; Chun-Han Ko; Chia-Chih Ou; Chien-Hou Wu

doi:10.1016/j.biortech.2007.03.003

Removal of benzene and toluene by carbonized bamboo materials modified with TiO2

Bioresour Technol. 2008 Mar;99(5):954-8. doi: 10.1016/j.biortech.2007.03.003. Epub 2007 Apr 24.

Authors

Chih Shen Chuang¹, Ming-Kuang Wang, Chun-Han Ko, Chia-Chih Ou, Chien-Hou Wu

Affiliation

¹ School of Forestry and Resource Conservation, National Taiwan University, Taipei 106, Taiwan.

PMID: 17459699
DOI: 10.1016/j.biortech.2007.03.003

Abstract

Carbonized moso bamboo (Phyllostachys pubescens) was coated with TiO(2) nanoparticles to enhance its removal efficiency of harmful gases. Carbonized bamboo-TiO(2) composite (CBC) was prepared by heating mixtures of carbonized bamboo powder (CB) and TiO(2) nanoparticles, denoted as CBM, under nitrogen condition. TiO(2) nanoparticle and carbonized bamboo powder were mixed with the mass ratios of 1/1 and 2/1, respectively. At the same mass ratio of TiO(2) to CB, the benzene and toluene removal efficiencies follow the trend: CBC>CBM>CB, which is consistent with the amount of TiO(2) 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.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Air Pollutants / chemistry
Air Pollution / prevention & control
Benzene / chemistry*
Catalysis
Charcoal / chemistry*
Nanoparticles
Poaceae / chemistry*
Titanium / chemistry*
Toluene / chemistry*

Substances

Air Pollutants
titanium dioxide
Charcoal
Toluene
Titanium
Benzene