Removal of 4-chlorophenol by visible-light photocatalysis using ammonium iron(II) sulfate-doped nano-titania

doi:10.1016/j.psep.2019.03.001

CNU IR > College of Sustainable Environment and Recreation > Dept. of Environmental Resources Management > Periodical Articles > Item 310902800/32627

Please use this identifier to cite or link to this item: https://ir.cnu.edu.tw/handle/310902800/32627

Title:	Removal of 4-chlorophenol by visible-light photocatalysis using ammonium iron(II) sulfate-doped nano-titania
Authors:	Villaluz, Finella Dianna A. de Luna, Mark Daniel G. Colades, James, I Garcia-Segura, Sergi Ming-Chun Lu(盧明俊)
Contributors:	Univ Philippines, Environm Engn Program, Natl Grad Sch Engn Univ Philippines, Dept Chem Engn Arizona State Univ, Nanosyst Engn Res Ctr Nanotechnol Enabled Water T, Sch Sustainable Engn & Built Environm Chia Nan Univ Pharm & Sci, Dept Environm Resources Management
Keywords:	Persistent organic pollutants Wastewater treatment Visible light photocatalyst Nanotechnology Advanced oxidation process
Date:	2019-05
Issue Date:	2020-07-29 13:52:43 (UTC+8)
Publisher:	INST CHEMICAL ENGINEERS
Abstract:	Halogenated aromatic compounds are toxic and carcinogenic. This is the case of 4-chlorophenol (4CP), a priority pollutant found in large amounts in industrial wastewater effluents from pharmaceutical, dye, pulp and paper industries. Long term exposure to 4-CP even at low-concentration is associated to endocrine disruption. Photocatalysis is a promising advanced oxidation process that attains complete degradation of organic pollutants. The use of UV lamps undermines actual photocatalysis application due to the electrical energy requirements. In this frame, the development of visible light photoactive catalysts can overcome these challenges allowing the implementation using affordable light sources like light emitting diodes (LEDs) or natural sunlight. This work is to present the synthesis and use of an alternative photocatalyst that provided eight-fold increase on 4-CP degradation in comparison to commercial TiO2 Degussa P-25. Almost complete removal (99.20%) was achieved with synthesized Fe/N/S-doped TiO2 at 1.0 g L-1 of photocatalyst dose and pH 7.0 for treating 10 ppm of 4-CP.The first-order rate constant, k(LH ) and Langmuir adsorption constant, Ku(LH, )were calculated with values of 0.429 min(-1) and 2.326 ppm(-1), respectively. The Fe/N/S-TiO2. photocatalysts showed an excellent stability maintaining their performance during four cycles of recovery/reuse. (C) 2019 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
Relation:	Process Safety and Environmental Protection, v.125, pp.121-128
Appears in Collections:	[Dept. of Environmental Resources Management] Periodical Articles

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