TiO2-Coated Carbon for the Removal of VOCs (submitted by US Department of Energy)

摘要

A photocatalytic fluidized bed reactor was designed, fabricated, and optimized for carbon fluidization and UVrnintensity to significantly reduce emissions form a variety of sources at pulp, paper and paperboard mills and solidrnwood products facilities. Several activated carbons were investigated to determine the carbon best suited forrnmethanol capture and in-situ regeneration. Although results were inconclusive as to what carbon properties werernideal for the intended purpose, it was learned that wood based carbons are preferred compared to coal based carbons.rnIn bench scale experiments, titania coated carbon was capable of degrading approximately 100 ppm of methanol in 1rnhour. Parallel efforts focused on titania doped silica-gel, and thus far, zero methanol degradation was realized.