Water purification in a fluidized bed photocatalytic reactor using TiO"2-coated ceramic particles [An article from: Chemical Engineering Journal]

This digital document is a journal article from Chemical Engineering Journal, published by Elsevier in 2005. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
TiO"2-coated mm-size spherical ceramic particles which are very stable for dynamical impact and whose specific density is very near to unity were developed and applied to a fluidized bed reactor for water purification. Two types of test-scale fluidized bed photocatalytic reactors were prepared: the reactor a which holds the ultra violet light source (254nm) inside it and the reactor b which holds the light source (365nm) outside it. The latter one is supposed to be operated under solar light. Phenol and bisphenol A were selected for target contaminants and the decomposition experiments by fluidized bed photocatalytic reactor were conducted. It was shown with the reactor a that aqueous phenol and bisphenol A with 10mg/dm^3 in 2L water can be decomposed rapidly in about 200min and TOC originated from their byproducts can eventually be mineralized in short time in 300min. It was also shown through the decomposition experiment using the reactor b that water purification under solar light can be possible, though the decomposability is less effective: it took about 20h to mineralize the aqueous contaminants with10mg/dm^3 in 1L water.