Effect of degrading yellow oxo-biodegradable low-density polyethylene films to water quality

7th International Conference on Key Engineering Materials

材料科学;工业技术

Requejo, B.A.^1,2 ; Pajarito, B.B.^2

Environmental Engineering Program, University of the Philippines, Diliman, Quezon City

1101, Philippines^1

Polymer Research Laboratory, Department of Chemical Engineering, University of the Philippines, Diliman, Quezon City

1101, Philippines^2

关键词: Aquatic environments;    LDPE film;    Lead chromate;    Low density;    Low density polyethylene films;    Oxidation reduction potential;    Plastic wastes;    Total dissolved solids;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/201/1/012004/pdf
DOI  :  10.1088/1757-899X/201/1/012004

来源: IOP

【 摘 要 】

Polyethylene (PE) contributes largely to plastic wastes that are disposed in aquatic environment as a consequence of its widespread use. In this study, yellow oxo-biodegradable low-density PE films were immersed in deionized water at 50°C for 49 days. Indicators of water quality: pH, oxidation-reduction potential, turbidity, and total dissolved solids (TDS), were monitored at regular intervals. It was observed that pH initially rises and then slowly decreases with time, oxidation-reduction potential decreases then slowly increases with time, turbidity rises above the control at varied rates, and TDS increases abruptly and rises at a hindered rate. Moreover, the films potentially leach out lead chromate. The results imply that degrading oxo-biodegradable LDPE films results to significant reduction of water quality.