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布洛芬固定膜TiO2光催化降解特性研究(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2013年04期
Page:
90-94
Column:
研究论文
publishdate:
2013-07-15

Article Info:/Info

Title:
Study on the photocatalytic degradation characteristics of ibuprofen with immobilized TiO2 catalyst
Article ID:
1000-2006(2013)04-0090-05
Author(s):
LIN Shaohua1 YANG Didi2 LU Jingjing1 ZHOU Tingting1
1. College of Civil Engineering, Nanjing Forestry University, Nanjing 210037,China;
2. Nantong Water Supply Company, Nantong 226009,China
Keywords:
ibuprofen(IBP) immobilized catalyst photocatalysis TiO2
Classification number :
R994.6
DOI:
10.3969/j.issn.1000-2006.2013.04.017
Document Code:
A
Abstract:
To reveal the photocatalytic degradation characteristics of ibuprofen(IBP), the effects of adsorption, photolysis, initial concentration, initial pH value and H2O2 dosage on the degradation of ibuprofen were explored by photoreactor with immobilized TiO2 catalyst supported on fiberglass net by solgel method. Mineralization and intermediates were also investigated. Results indicated that adsorption and photolysis under UV365 had little effects on IBP degradation. The degradation of IBP followed pseudlo-first-order kinetics under studied conditions, and the pseudo-first-order kinetic constants decreased with the increase of initial concentration. The photocatalytic degradation rate decreased with the increase of initial pH, for that the existing forms of IBP in the solution and the electric charge of TiO2 surface were controlled by pH. The photocatalytic degradation rate of IBP was significantly affected by H2O2 dosage, and the suitable, amount of H2O2 was about 2.5 mg/L. It was also indicated that TOC was removed effectively. According to the LC-MS data, hydroxylation addition to the parent pharmaceutical was proposed as the fundamental degradation pathway.

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Last Update: 2013-07-30