| Summary: | 碩士 === 中原大學 === 環境工程學系 === 107 === Microplastic is a new emerging pollutant. For facilitating researcher to conduct deeper study toward microplastic, there are some new devices which is specifically designed to capture microplastic samples in aquatic environment. Among those new born design, which one is better? this study is aimed to make an approach in comparing those design based on the flowrate capacity and particle deposition. We provide an approach in understanding physical phenomena inside a bongo net. We also provide innovative design called multi net structure and single net with multi-tier container that the design was backgrounded by advices of former researchers.
Three different designs are named as common bongo net (design A), multi net structure (design B) and single net with multi-tier container (design C). By using Darcy’s law of permeability as a strategic approach for estimating the flowrates of each design, we can compare the effectivity.
Set on the similar circumstance, design A gets original water pressure and one time of membrane resistances. It makes design A having highest flowrates, but the researcher probably loss fine size of microplastics. Then, design B, coupled by two different membrane pore sizes, water pressure is decreasing after passing the first membrane and also facing the increase of membrane resistance. It causes the slower flowrate, but this design allows the opportunity in capturing finer microplastics. Design C, made of the finest membrane pore size with only one layer, faces the original water pressure giving higher flowrate than design B but less than design A. Design C is also completed with multi-tier container that divide the particles deposition based on size. It sound that each design has each own specialty.
|
|---|
