Effect of Temperature and pH on the Floatability of PVA and POM Microplastics 


Vol. 60,  No. 1, pp. 15-21, Feb.  2023
10.12772/TSE.2023.60.015


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  Abstract

Removal of microplastics is one of the most important task in the modern society because the microplastics not only adversely affect the natural environment and ecosystem, but also have internal inflammatory and carcinogenic effects on the human body. Therefore, there is an urgent need to develop a method for recovering microplastics dissolved in aquatic ecosystems. Herein, polyvinyl alcohol (PVA) and polyoxomethylene (POM) microplastics dissolved in Tancheon, Seongnam were recovered by density screening using NaCl, an eco-friendly method. The density of the experimental aqueous NaCl solution was adjusted to 1.2 g/cm3. Pulverized PVA and POM was used for experiments, and the floatability was measured by comparing the initial input amount and the recovered amount. The floatability of microplastics was compared by changing the temperature and pH. The experimental results showed that the floatability of PVA increased as the temperature increased or the solvent was acidic or basic. On the other hand, the floatability of POM is high at low temperature or neutral pH condition.

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pISSN : 1225 - 1089
eISSN : 2288 - 6419

한국연구재단 우수등재학술지 유지 (2022년)