General Information
    • ISSN: 2010-0264
    • Frequency: Bimonthly (2010-2014); Monthly (Since 2015)
    • DOI: 10.18178/IJESD
    • Editor-in-Chief: Prof. Richard Haynes
    • Executive Editor: Ms. Nancy Y. Liu
    • Abstracting/ Indexing: Chemical Abstracts Services (CAS), CABI, DOAJ, Ulrich Periodicals Directory, Engineering & Technology Digital Library, Electronic Journals Library, Crossref, ProQuest.
    • E-mail: ijesd@ejournal.net
  • Oct 26, 2017 News! Vol.8, No.10 has been published with online version!   [Click]
  • Sep 13, 2017 News! Vol.8, No.9 has been published with online version!   [Click]
Editor-in-chief
The University of Queensland, Australia
It is my honor to be the editor-in-chief of IJESD. The journal publishes good papers in the field of environmental science and development.
IJESD 2017 Vol.8(9): 635-641 ISSN: 2010-0264
doi: 10.18178/ijesd.2017.8.9.1030

Removal of Phenanthrene in an Aqueous Matrix by Entrapped Crude Enzymes on Alginate Beads Combined with TiO2-C-Ag Coated Fiberglass

D. F. González-Ramírez, P. Ávila-Pérez, L. G. Torres-Bustillos, R. Aguilar-López, F. J. Esparza-García, and R. Rodríguez-Vázquez
Abstract—The polycyclic aromatic hydrocarbons (PAHs) are classified as a public health hazard, and priority pollutants to be eliminated from water. The degradation of PAHs is abetted by its low water solubility, yet countered by its attached to organic matter complicating the PAHs’ removal from wastewater. In this study, the use of two different types of mechanisms to overcome the drawbacks of the presence of dissolved organic matter was evaluated in PHE (phenanthrene) removal. The combination of crude enzymes entrapped in alginate gels with heterogeneous photocatalysis adds the catalytic activity of the enzymes to PHE treatment without requiring special conditions. The application of photocatalysis techniques for water recuperation is subject to photon incidence over the catalyst, which affects the efficiency of the process. The combined system removed 94.3 ± 2.0% of PHE in the presence of polyoxyethylene sorbitan monooleate and dimethyl sulfoxide. The alginate gels were able to maintain the catalytic activity of the enzymes, while the TiO2-C-Ag was activated under low-energy UV light (365-465 nm) with the Ag islands acting as electron donors. The latter was confirmed in the surface analysis by X-ray photoelectron spectroscopy, which presented an increase in carbonyl groups in both materials and a change from Ag0 to Ag3+ after 13 h of treatment. The combination of both treatments improved removal in a single TiO2-C-Ag treatment.

Index Terms—Biocatalyst, coupled treatment, heterogeneous photocatalysis, hydrocarbons.

D. F. González-Ramírez is with the the Department of Biotechnology and Bioengineering of the Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Av. Instituto Politécnico Nacional 2508, A.P. 14-740, Col. Zacatenco, 07360 Ciudad de México, México (e-mail: fgonzalez@cinvestav.mx).
P. Ávila-Pérez Author is with the Instituto Nacional de Investigaciones Nucleares (ININ), Carr. Mexico-Toluca S/N, La Marquesa, Ocoyoacac, 52750 State of Mexico, Mexico (e-mail: pedro.avila@inin.gob.mx).
L. G. Torres-Bustillos is with Unidad Profesional Interdisciplinaria de Biotecnología (UPIBI), IPN. Av. Acueducto S/N Col. Barrio La Laguna Ticomán, 97340 Mexico city, Mexico (e-mail: LTorresBustillos@gmail.com).
R. Aguilar-López, J. F. Esparza-García, and R. Rodríguez-Vázquez are with the Department of Biotechnology and Bioengineering of CINVESTAV-IPN, Mexico (e-mail: raguilar@cinvestav.mx, fesparza@cinvestav.mx, rrodrig@cinvestav.mx).

[PDF]

Cite: D. F. González-Ramírez, P. Ávila-Pérez, L. G. Torres-Bustillos, R. Aguilar-López, F. J. Esparza-García, and R. Rodríguez-Vázquez, "Removal of Phenanthrene in an Aqueous Matrix by Entrapped Crude Enzymes on Alginate Beads Combined with TiO2-C-Ag Coated Fiberglass," International Journal of Environmental Science and Development vol. 8, no. 9, pp. 635-641, 2017.

Copyright © 2008-2017. International Journal of Environmental Science and Development. All rights reserved.
E-mail: ijesd@ejournal.net