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Efficient transformation of trichloroethylene activated through sodium percarbonate using heterogeneous zeolite supported nano zero valent iron-copper bimetallic composite
East China University of Science and Technology, Shanghai, China .
East China University of Science and Technology, Shanghai, China .
East China University of Science and Technology, Shanghai, China .
Muhammad Nawaz Sharif University of Engineering and Technology, Multan, Pakistan.
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2017 (engelsk)Inngår i: Chemical Engineering Journal, ISSN 1385-8947, E-ISSN 1873-3212, Vol. 308, s. 396-407Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Zeolite supported nano zero valent iron copper bimetallic composite (Z-nZVFe-Cu) was synthesized using an ion exchange method. The morphology and physico-chemical properties of the Z-nZVFe-Cu composite were determined using transmission electron microscopy (TEM), scanning electron microscopy (SEM), Brunauer Emmett Teller (BET), energy dispersive X-ray spectra (EDS), Fourier transform infrared spectroscopy (FTIR) and X-ray diffractometer (XRD). The results showed that iron and copper nano particles were well dispersed on the zeolite sheet. The degradation efficiency of trichloroethylene (TCE) achieved was more than 95% using Z-nZVFe-Cu as a heterogeneous Fenton like catalyst. An efficient removal of total organic carbon (TOC) was promoted as compared to zeolite supported iron nano composite (Z-nZVFe) and unsupported nano iron (nZVFe). Electron spin resonance (ESR) detection confirmed the intensity of hydroxyl radicals (OH[rad]) in the system. While benzoic acid (BA), a probe indicator for the quantification of OH[rad], demonstrated the higher intensity of hydroxyl radicals in Z-nZVFe-Cu as compared to Z-nZVFe and nZVFe. The less iron and copper leaching of from Z-nZVFe-Cu presented its higher stability and better catalytic activity, displaying its potential long term applications for TCE degradation in groundwater. 

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2017. Vol. 308, s. 396-407
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URN: urn:nbn:se:mdh:diva-33347DOI: 10.1016/j.cej.2016.09.051ISI: 000389088000042Scopus ID: 2-s2.0-84988701257OAI: oai:DiVA.org:mdh-33347DiVA, id: diva2:1033418
Tilgjengelig fra: 2016-10-06 Laget: 2016-10-06 Sist oppdatert: 2017-11-30bibliografisk kontrollert

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