Citation
Nurul Ashraf Razali, . and Wan Rafizah Wan Abdullah, . and Nurafiqah Mohd Zikir, . Effect of thermo-photocatalytic process using zinc oxide on degradation of macro/micro-plastic in aqueous environment. pp. 1-14. ISSN 2672-7226
Abstract
More than 320 million tons of plastics are produced annually and the rate of plastic waste generation steadily increases by 3.9 per year. Introduction of plastic waste into water bodies may lead to many adverse environmental impacts as the plastic debris is very stable and generally requires a longer time to degrade. Over a period of time bulk plastic debris will slowly degrade into small fragments known as macroplastics (particles size 5mm) and microplastics (particles size 5mm). Accumulation of this newly emerging class of pollutants potentially decreases the efficiency of the existing water treatment system. Therefore improvement on the existing water treatment technique is required. This study aimed at investigating the effect of using the UV-assisted thermo-photocatalytic reaction on the degradation of polypropylene (PP) macro- and microplastics in an aqueous environment for 6 hours. ZnO nanoparticles (50 nm) were employed as the photocatalyst. 23 Full Factorial design was carried out in order to identify the correlation between the reaction temperature (35-50 C) size of PP plastic (25-100 mm) and the catalyst dosage (1“3 g/L) factors and their influences on the weight loss of macro/micro-plastics. Maximum plastic weight loss of 7.8 wt was achieved at 50C 1 g/L ZnO and 25 mm of PP plastic. The interaction between temperature and size must be taken into consideration.
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Abstract
More than 320 million tons of plastics are produced annually and the rate of plastic waste generation steadily increases by 3.9 per year. Introduction of plastic waste into water bodies may lead to many adverse environmental impacts as the plastic debris is very stable and generally requires a longer time to degrade. Over a period of time bulk plastic debris will slowly degrade into small fragments known as macroplastics (particles size 5mm) and microplastics (particles size 5mm). Accumulation of this newly emerging class of pollutants potentially decreases the efficiency of the existing water treatment system. Therefore improvement on the existing water treatment technique is required. This study aimed at investigating the effect of using the UV-assisted thermo-photocatalytic reaction on the degradation of polypropylene (PP) macro- and microplastics in an aqueous environment for 6 hours. ZnO nanoparticles (50 nm) were employed as the photocatalyst. 23 Full Factorial design was carried out in order to identify the correlation between the reaction temperature (35-50 C) size of PP plastic (25-100 mm) and the catalyst dosage (1“3 g/L) factors and their influences on the weight loss of macro/micro-plastics. Maximum plastic weight loss of 7.8 wt was achieved at 50C 1 g/L ZnO and 25 mm of PP plastic. The interaction between temperature and size must be taken into consideration.
Additional Metadata
Item Type: | Article |
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AGROVOC Term: | Plastics |
AGROVOC Term: | Water pollution |
AGROVOC Term: | Alternative methods |
AGROVOC Term: | Degradation |
AGROVOC Term: | Particle size |
AGROVOC Term: | Experiments |
AGROVOC Term: | Analysis of variance |
AGROVOC Term: | Thermogravimetric analysis |
AGROVOC Term: | Temperature |
AGROVOC Term: | Polypropylene |
Depositing User: | Mr. AFANDI ABDUL MALEK |
Last Modified: | 24 Apr 2025 00:54 |
URI: | http://webagris.upm.edu.my/id/eprint/9301 |
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