The Mechanism of PE Microplastics Carrying Cr(VI) Ions in the Water Environment

More attention was paid to the attachment between Microplastics and environmental pollutants. The pH would influence the adsorption capability. The attachment performance of Cr(VI) by Polyethylene (PE) would be promoted by sodium dodecyl benzene sulfonate (SDBS) addition for the pH of less than 6. The attachment performance would be decreased when the pH was more than 6, for the SDBS would compete with CrO₄^2- for occupying the adsorption sites of PE. This research would provide a basis for investigating the influence of pH on adsorption performance of heavy metal by PE to simulate the surface attachment model of those three kind of pollutants.