Photocatalytic Degradation of Humic Acid by Fe- Supported on Spherical Activated Carbon with Enhanced ActivityReport as inadecuate




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International Journal of PhotoenergyVolume 2013 2013, Article ID 296821, 5 pages

Research ArticleResearch Center for Environmental Resources & Processes, Korea Research Institute of Chemical Technology KRICT, Daejeon 305-600, Republic of Korea

Received 5 April 2013; Revised 4 July 2013; Accepted 4 July 2013

Academic Editor: Hongtao Yu

Copyright © 2013 Mi-Hwa Baek et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Fe-TiO2 supported on spherical activated carbon Fe-TiO2-SAC with different Fe contents was prepared by heat treatment process after ion exchange method. The prepared Fe-TiO2-SAC was characterized by SEM, EDS, and BET. Batch experiments for photocatalytic degradation of humic acid by Fe-TiO2-SAC were carried out in the fluidized bed photoreactor. It was found that 0 wt% Fe-TiO2-SAC had high photocatalytic activity in the wavelength range of 100~280 nm. However, Fe-TiO2-SAC with Fe contents of 0.4, 0.6, and 0.8 wt% exhibited higher photocatalytic activity than 0 wt% Fe-TiO2-SAC in the wavelength range of 315~400 nm compared to that of 100~280 nm. The optimum Fe content was 0.6 wt% for maximum photocatalytic degradation of humic acid. Moreover, Fe-TiO2-SAC does not require an additional process step for separation of photocatalyst from treated water after photocatalysis.





Author: Mi-Hwa Baek, Ji-Sook Hong, Ji-Won Yoon, and Jeong-Kwon Suh

Source: https://www.hindawi.com/



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