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An efficient catalytic degradation of trichloroethene in a percarbonate system catalyzed by ultra-fine heterogeneous zeolite supported zero valent iron-nickel 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.
East China University of Science and Technology, Shanghai, China.
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2017 (English)In: Applied Catalysis A: General, ISSN 0926-860X, E-ISSN 1873-3875, Vol. 531, 177-186 p.Article in journal (Refereed) Published
Abstract [en]

Zeolite supported nano iron-nickel bimetallic composite (Z-nZVI-Ni) was prepared using a liquid-phase reduction process. The corresponding surface morphologies and physico-chemical properties of the Z-nZVI-Ni composite were determined using scanning electron microscopy (SEM), transmission electron microscopy (TEM), Energy dispersive X-ray spectra (EDS), Brunauer Emmett Teller (BET) adsorption, wide angle X-ray diffractometry (WA-XRD), and Fourier transform infrared spectroscopy (FTIR). The results indicated high dispersion of iron and nickel nano particles on the zeolite sheet with an enhanced surface area. Complete destruction of trichloroethene (TCE) and efficient removal of total organic carbon (TOC) were observed by using Z-nZVI-Ni as a heterogeneous catalyst for a Fenton-like oxidation process employing sodium percarbonate (SPC) as an oxidant. The electron spin resonance (ESR) of Z-nZVI-Ni verified the generation and intensity of hydroxyl radicals (OH). The quantification of OHelucidated by using p-chlorobenzoic acid, a probe indicator, confirmed the higher intensity of OH. The transformation products were identified using GC–MS. The slow iron and nickel leaching offered higher stability and better catalytic activity of Z-nZVI-Ni, demonstrating its prospective long term applications in groundwater for TCE degradation.

Place, publisher, year, edition, pages
2017. Vol. 531, 177-186 p.
National Category
Engineering and Technology Other Engineering and Technologies
Identifiers
URN: urn:nbn:se:mdh:diva-33534DOI: 10.1016/j.apcata.2016.11.001ISI: 000392680500020Scopus ID: 2-s2.0-85006294070OAI: oai:DiVA.org:mdh-33534DiVA: diva2:1045485
Available from: 2016-11-09 Created: 2016-11-09 Last updated: 2017-02-23Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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