Abstract:
Removal of VOCs is a process of controlling hazard according to industrial hygiene. Photocatalytic oxidation is effectiveness, non-toxicity, environmentally friendly technology, and widely used. A plant-based biodegradable poly (lactic acid) PLA was used as bio-supporter for TiO2 photocatalyst. The research was aimed to improve incorporating TiO2 -anatase in PLA for using as environmentally friendly photocatalyst material which use less process and materials. To study appropriate dosage of TiO2 -anatase for synthesized the 5%, 10%, and 15%TiO2 /PLA-composite film using blown film technique. To study physical properties of photocatalyst, removal efficiency of benzene and eco-efficiency. The result indicated that TiO2 dosages with PLA in 5,10 and 15% wt./wt. were incorporated utilizing a blown film technique. The SEM images showed homogeneity of the distribution of TiO2 on the PLA matrix. Band gap energies of TiO2 in PLA/TiO2 -composite film are 3.14, 3.18, and 3.22 eV, respectively. There is no alteration of structure of TiO2 and PLA after blown film technique. The benzene degradation rate constants were obtained by fitting the experimental data using first order reaction kinetics. Efficiency of removal benzene was 44%, 42%, and 32% using 5%, 10%, and 15%TiO2 /PLA-composite film, respectively. Improvement of TiO2 /PLA-composite film are eco-efficiency especially 5%TiO2 /PLA-composite film is the best.