Removal of polyvinyl alcohol from aqueous solutions using P-25 TiO2 and ZnO photocataysts: A comparative study

被引:15
作者
Lin, Chia-Chang [1 ]
Hsu, Ling-Jung [1 ]
机构
[1] Chang Gung Univ, Dept Chem & Mat Engn, Tao Yuan, Taiwan
关键词
Photocatalytic degradation; Polyvinyl alcohol; PVA; TiO2; ZnO; WASTE-WATER; POLY(VINYL ALCOHOL); DEGRADATION; ACID; SUSPENSIONS; OXIDATION; PHOTODEGRADATION; UV/TIO2; DYES;
D O I
10.1016/j.powtec.2013.05.027
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
This investigation evaluates the effectiveness of P-25 TiO2 and ZnO in removing polyvinyl alcohol (PVA) from aqueous solutions. The effects of pH, photocatalyst dosage, initial PVA concentration, and UV wavelength on the removal efficiency of PVA were studied. Under acidic conditions, the removal efficiency of PVA using P-25 TiO2 exceeded that under alkaline conditions. However, the removal efficiency of PVA using ZnO under alkaline conditions exceeded that under acidic conditions. Additionally, the removal efficiency of PVA increased with photocatalyst dosage, but declined as the initial PVA concentration increased. The UV wavelength slightly affected the removal efficiency of PVA using P-25 TiO2, but dramatically affected that using ZnO. At UV-254 nm, pH 9, a photocatalyst dosage of 0.12 g/L, and an initial PVA concentration of 20 mg/L, the removal efficiencies of PVA using P-25 TiO2 and ZnO were 54% and 74%, respectively. Therefore, at UV-254 nm and pH 9, ZnO was more effective than P-25 TiO2. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:351 / 355
页数:5
相关论文
共 26 条
[1]   Advanced oxidation processes (AOP) for water purification and recovery [J].
Andreozzi, R ;
Caprio, V ;
Insola, A ;
Marotta, R .
CATALYSIS TODAY, 1999, 53 (01) :51-59
[2]   Adsorption equilibrium and kinetics of polyvinyl alcohol from aqueous solution on powdered activated carbon [J].
Behera, Shishir Kumar ;
Kim, Jung-Hoon ;
Guo, Xuejun ;
Park, Hung-Suck .
JOURNAL OF HAZARDOUS MATERIALS, 2008, 153 (03) :1207-1214
[3]   Kinetic study on photocatalytic degradation of CI Acid Yellow 23 by ZnO photocatalyst [J].
Behnajady, M. A. ;
Modirshahla, N. ;
Hamzavi, R. .
JOURNAL OF HAZARDOUS MATERIALS, 2006, 133 (1-3) :226-232
[4]   Photocatalytic degradation of model textile dyes in wastewater using ZnO as semiconductor catalyst [J].
Chakrabarti, S ;
Dutta, BK .
JOURNAL OF HAZARDOUS MATERIALS, 2004, 112 (03) :269-278
[5]   Treatment of desizing wastewater containing poly(vinyl alcohol) by wet air oxidation [J].
Chen, GH ;
Lei, LC ;
Yue, PL ;
Cen, PL .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2000, 39 (05) :1193-1197
[6]   Heterogeneous photocatalytic oxidation of polyvinyl alcohol in water [J].
Chen, YX ;
Sun, ZS ;
Yang, Y ;
Ke, Q .
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2001, 142 (01) :85-89
[7]   Investigation of process parameters for the removal of polyvinyl alcohol from aqueous solution by iron electrocoagulation [J].
Chou, Wei-Lung ;
Wang, Chih-Ta ;
Huang, Kai-Yu .
DESALINATION, 2010, 251 (1-3) :12-19
[8]   Photocatalytic degradation of azo dye acid red 14 in water: investigation of the effect of operational parameters [J].
Daneshvar, N ;
Salari, D ;
Khataee, AR .
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2003, 157 (01) :111-116
[9]   Degradation of amoxicillin, ampicillin and cloxacillin antibiotics in aqueous solution by the UV/ZnO photocatalytic process [J].
Elmolla, Emad S. ;
Chaudhuri, Malay .
JOURNAL OF HAZARDOUS MATERIALS, 2010, 173 (1-3) :445-449
[10]   SPECTROPHOTOMETRIC DETERMINATION OF POLYVINYL ALCOHOL IN PAPER COATINGS [J].
FINLEY, JH .
ANALYTICAL CHEMISTRY, 1961, 33 (13) :1925-&