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Treatment Of Polyvınyl Chlorıde (Pvc), Polypropylene (Pp) Mıcroplastics, Usıng Bi2wo6 / Fe3o4 Nanocomposıte
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Researchers applied photodegradation — a clean, green removal technology — to treat polyvinyl chloride (PVC) and polypropylene (PP) microplastics, evaluating the technique as a solution to the chemical inertness and environmental accumulation problems that make microplastics a persistent ecological threat.
Microplastics are ubiquitous in our daily life because of their low cost, portability, durability, and processability. However, since their chemical inert character and their accumulation problems exhibited a great threat to the sustainable development and ecocystem. Photo degradation of microplastic is a clean removal green technology. Therefore, in this study polyvinyl chloride (PVC), polypropylene (PP) microplastics was photodegraded with a novel heterogenous nanocomposite namely Bi2WO6 / Fe3O4 nanocomposite. The effects of increasing Bi2WO6 / Fe3O4 nanocomposite concentrations, PP and PVC concentrations, photodegradation time, pH, temperature on the photodegradation yields of PP and PVC yields were examined.For maximum PVC and PP yields (99% and 98%) the optimized conditions were as follows: Ph=5, 1.5 mg/l Bi2WO6 / Fe3O4 nanocomposite concentration, 800 mg/l PVC and PP concentrations, 15 min photodegradation time, 40 W/m2 sun ligth power, 30 Oc temperature and 0,9 mg/l Cl-1, SO4-2, BrO3-1, PO4-3 and CO3-2 ion concentrations. The XRD analysis showed that the cristal structure of Fe3O4/Bi2WO6 nanocomposite originated from the Bi2WO6 not from Fe3O4. The XPS disturbances of Fe3O4/Bi2WO6 nanocomposite showed the presence of Fe, W, O, and Bi elements.TEM and SEM imaged showed that the Fe3O4/Bi2WO6 nanocomposite exhibited a palm shape with uniform structure of Bi and Fe. HR-TEM analyses showed that the nanocomposite exhibited a 2D (dimensional)-2D heterostructure.
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