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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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    Abstract - Issue May 2015, 36 (3)                                     Back


nstantaneous and historical temperature effects on a-pinene

Removal of VOCs by photocatalytic oxidation using

nano-TiO2/PLA biocomposite 

 

Chaisri Tharasawatpipat1, Kowit Suwannahong2, Jittiporn Kruenate3 and Torpong Kreetachat1*

1Department of Environmental Engineering, School of Energy and Environment, University of Phayao, Phayao 56000, Thailand

2Department of Public Health, Faculty of Public Health, Western University, Kanchanaburi 71170, Thailand

3PTT Global Chemical Public Company Limited, Chatuchak, Bangkok 10900, Thailand

*Corresponding Author?s E-mail: torpong.kr@up.ac.th

 

 

 

 

Publication Data

Paper received:

25 June 2013

 

Revised received:

15 April 2014

 

Accepted:

28 April 2014

 

Abstract

Poly (lactic acid) or PLA has been challenging as one of the most recognizable biopolymer for more than a decade since it has been readily fabricated as biocomposite film. In the present study, biocomposite film, which composed of PLA and nano-TiO2 particles, were used as a carrier to modify volatile organic compound (VOCs) removal efficiency by photocatalytic oxidation, using the nano-TiO2/PLA biocomposite film as a photocatalyst. Since the amount of nano-TiO2 affected the efficiency of photocatalytic activity, the present study mainly focused at the effort to embed high amount of nano-TiO2 in PLA matrix. Therefore, the developed nano-TiO2/PLA biocomposite films were characterized for physical properties by Scanning Electron Microscope (SEM),UV-VIS spectrophotometer, and X-ray diffractometer (XRD). The SEM images revealed the presence of high homogeneity of the deposition of nano-TiO2 on PLA matrix. The XRD patterns interpreted that the nano-TiO2 embedded in PLA matrix exhibited mainly in anatase form. In addition, photodegradation results showed that DCM removal efficiencies were 41.2%, 63.4% and 49.1% when using the nano-TiO2/PLA biocomposite films loading at TiO25.0%, 10.0% and 15.0%wt.cat./wt.film., respectively. The present study emphasises the use of Nato-TiO2/PLA as promising photo catalyst for degradation of VOC.   

 

 

 Key words

Photocatalytic oxidation, Dichloromethane, Nano-TiO2/PLA biocomposite film

 

 

 

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