PVA와 POM 미세플라스틱 Floatability에 미치는 온도와 pH의 영향

Abstract

Removal of microplastics is one of the most important task in the modern societybecause 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 dissolvedin aquatic ecosystems. Herein, polyvinyl alcohol (PVA) and polyoxomethylene (POM)microplastics dissolved in Tancheon, Seongnam were recovered by density screeningusing NaCl, an eco-friendly method. The density of the experimental aqueous NaCl solutionwas adjusted to 1.2 g/cm3. Pulverized PVA and POM was used for experiments, and thefloatability was measured by comparing the initial input amount and the recoveredamount. The floatability of microplastics was compared by changing the temperature andpH. The experimental results showed that the floatability of PVA increased as the temperatureincreased or the solvent was acidic or basic. On the other hand, the floatability of POMis high at low temperature or neutral pH condition.