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Sonocatalytic removal of ibuprofen and sulfamethoxazole in the presence of different fly ash sources.
Al-Hamadani, Yasir A J; Park, Chang Min; Assi, Lateef N; Chu, Kyoung Hoon; Hoque, Shamia; Jang, Min; Yoon, Yeomin; Ziehl, Paul.
Afiliación
  • Al-Hamadani YAJ; Department of Civil and Environmental Engineering, University of South Carolina, Columbia, SC 29208, USA.
  • Park CM; Department of Civil and Environmental Engineering, University of South Carolina, Columbia, SC 29208, USA.
  • Assi LN; Department of Civil and Environmental Engineering, University of South Carolina, Columbia, SC 29208, USA.
  • Chu KH; Department of Civil and Environmental Engineering, University of South Carolina, Columbia, SC 29208, USA.
  • Hoque S; Department of Civil and Environmental Engineering, University of South Carolina, Columbia, SC 29208, USA.
  • Jang M; Department of Environmental Engineering, Kwangwoon University, 20 Kwangwoon-ro, Nowon-Gu, Seoul 01897, Republic of Korea.
  • Yoon Y; Department of Civil and Environmental Engineering, University of South Carolina, Columbia, SC 29208, USA. Electronic address: yoony@cec.sc.edu.
  • Ziehl P; Department of Civil and Environmental Engineering, University of South Carolina, Columbia, SC 29208, USA.
Ultrason Sonochem ; 39: 354-362, 2017 Nov.
Article en En | MEDLINE | ID: mdl-28732956
We examined the feasibility of using two types of fly ash (an industrial waste from thermal power plants) as a low-cost catalyst to enhance the ultrasonic (US) degradation of ibuprofen (IBP) and sulfamethoxazole (SMX). Two fly ashes, Belews Creek fly ash (BFA), from a power station in North Carolina, and Wateree Station fly ash (WFA), from a power station in South Carolina, were used. The results showed that >99% removal of IBP and SMX was achieved within 30 and 60min of sonication, respectively, at 580kHz and pH 3.5. Furthermore, the removal of IBP and SMX achieved, in terms of frequency, was in the order 580kHz>1000kHz>28kHz, and in terms of pH, was in the order of pH 3.5>pH 7>pH 9.5. WFA showed significant enhancement in the removal of IBP and SMX, which reached >99% removal within 20 and 50min, respectively, at 580kHz and pH 3.5. This was presumably because WFA contains more silicon dioxide than BFA, which can enhance the formation of OH radicals during sonication. Additionally, WFA has finer particles than BFA, which can increase the adsorption capacity in removing IBP and SMX. The sonocatalytic degradation of IBP and SMX fitted pseudo first-order rate kinetics and the synergistic indices of all the reactions were determined to compare the efficiency of the fly ashes. Overall, the findings have showed that WFA combined with US has potential for treating organic pollutants, such as IBP and SMX, in water and wastewater.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Ultrason Sonochem Asunto de la revista: DIAGNOSTICO POR IMAGEM Año: 2017 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Ultrason Sonochem Asunto de la revista: DIAGNOSTICO POR IMAGEM Año: 2017 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Países Bajos