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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received April 11, 2015
Accepted June 20, 2015

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Degradation of ultrahigh concentration pollutant by Fe/Cu bimetallic system at high operating temperature

Bo Lai^† Qingqing Ji Yue Yuan Donghai Yuan^1† Yuexi Zhou² Juling Wang²

Department of Environmental Science and Engineering, School of Architecture and Environment, Sichuan University, Chengdu 610065, China ¹Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing Climate Change Response Research and Education Center, Beijing University of Civil Engineering and Architecture, Beijing 100044, China ²Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China

laibo@scu.edu.cn

Korean Journal of Chemical Engineering, January 2016, 33(1), 207-215(9), 10.1007/s11814-015-0135-6

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Abstract

To investigate the degradation of high concentration pollutant by Fe/Cu bimetallic system at a high operating temperature, 10,000mg/L acid orange 7 (AO7) aqueous solution was treated by Fe/Cu bimetallic system at 80 oC. First, the effect of the operating temperature (30-80 oC) on the reactivity of Fe/Cu bimetallic particles was investigated thoroughly. Then, the studies on the effect of theoretical Cu mass loading, Fe/Cu dosage, stirring speed and initial pH on the reactivity of Fe/Cu bimetallic particles at a high temperature (i.e., 80 oC) were carried out, respectively. The degradation and transformation process of AO7 was studied by using COD, TOC and UV-Vis spectra. The results indicate that high concentration pollutant could be removed effectively by Fe/Cu bimetallic system at a high operating temperature. And the removal efficiencies of AO7 by Fe/Cu bimetallic system were in accordance with the pseudofirst-order model. Finally, it was observed that the high temperature could accelerate mass transport rate and overcome the high activation energy barrier to significantly improve the reactivity of Fe/Cu bimetallic particles. Therefore, the higher removal efficiency could be obtained by Fe/Cu system at a high operating temperature. Thus, the high operating temperature played a leading role in the degradation of high concentration pollutant.

Keywords

Operating Temperature High Concentration Pollutant Fe/Cu Bimetallic Particles Wastewater Treatment

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