Kinetic study of acetaminophen degradation by visible light photocatalysis

doi:10.1080/10934529.2014.894310

CNU IR > College of Sustainable Environment and Recreation > Dept. of Environmental Resources Management > Periodical Articles > Item 310902800/28610

Please use this identifier to cite or link to this item: https://ir.cnu.edu.tw/handle/310902800/28610

Title:	Kinetic study of acetaminophen degradation by visible light photocatalysis
Authors:	Gotostos, Mary Jane N. Su, Chia-Chi De Luna, Mark Daniel G. Lu, Ming-Chun
Contributors:	環境資源管理系
Keywords:	modified TiO2 visible light photocatalytic degradation kinetic Acetaminophen
Date:	2014-07
Issue Date:	2015-05-06 21:22:26 (UTC+8)
Publisher:	Taylor & Francis Inc
Abstract:	In this work, a novel photocatalyst K-3[Fe(CN)(6)]/TiO2 synthesized via a simple sol-gel method was utilized to degrade acetaminophen (ACT) under visible light with the use of blue and green LED lights. Parameters (medium pH, initial concentration of reactant, catalyst concentration, temperature, and number of blue LED lights) affecting photocatalytic degradation of ACT were also investigated. The experimental result showed that compared to commercially available Degussa P-25 (DP-25) photocatalyst, K-3[Fe(CN)(6)]/TiO2 gave higher degradation efficiency and rate constant (k(app)) of ACT. The degradation efficiency or k(app) decreased with increasing initial ACT concentration and temperature, but increased with increased number of blue LED lamps. Additionally, k(app) increased as initial pH was increased from 5.6 to 6.9, but decreased at a high alkaline condition (pH 8.3). Furthermore, the degradation efficiency and k(app) of ACT increased as K-3[Fe(CN)(6)]/TiO2 loading was increased to 1g L-1 but decreased and eventually leveled off at photocatalyst loading above this value. Photocatalytic degradation of ACT in K-3[Fe(CN)(6)]/TiO2 catalyst system follows a pseudo-first-order kinetics. The Langmuir-Hinshelwood equation was also satisfactorily used to model the degradation of ACT in K-3[Fe(CN)(6)]/TiO2 catalyst system indicated by a satisfactory linear correlation between 1/k(app) and C-o, with k(ini) = 6.54 x 10(-4) mM/min and K-ACT = 17.27mM(-1).
Relation:	Journal of Environmental Science and Health Part A-Toxic/Hazardous Substances & Environmental Engineering, v.49 n.8, pp.892-899
Appears in Collections:	[Dept. of Environmental Resources Management] Periodical Articles

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	1824	View/Open

Loading...