Devita Amelia, Eva Fathul Karamah, Melbi Mahardika, Edi Syafri, Sanjay Mavinkere Rangappa, Suchart Siengchin, Mochammad Asrofi
Microplastic pollution in the aquatic systems is attracting continued concern globally. Microplastics can be needed a long degradation time due to the structural complexity and hydrophobicity. The advanced oxidation process (AOPs) can generate reactive oxygen such as hydroxyl (OH) radicals. These radicals initiate the plastic degradation process by changes in chemical structure with formed functional groups such as hydroxyl (O-H) and carbonyl (C=O) groups and modified C-H groups. The changes in chemical structure are the alternative to accelerate the degradation of microplastics. In this paper, polyethylene (PE) microplastics were modified the chemical structure by AOPs using the combination of ozonation and hydrogen peroxide (H2O2). The effect of the AOPs in samples of PE microplastics was characterized using Fourier Transform Infrared (FTIR) analysis. The results show increasing the intensity of the O-H and C=O bands and decreasing the intensity of C-H groups. The highest carbonyl index (CI) value was 1.33 at pH 12 with a flow rate of 3 L/min using the combination of ozonation and hydrogen peroxide method. © 2021 Elsevier Ltd. All rights reserved.
Department of Chemical Engineering, Institut Teknologi Sumatera, South Lampung, 35365, Indonesia; Departement of Chemical Engineering, Universitas Indonesia, Depok, 16424, Indonesia; Departement of Biosystems Engineering, Institut Teknologi Sumatera, South Lampung, 35365, Indonesia; Departement of Agricultural Technology, Agricultural Polytechnic, West Sumatera, 26271, Indonesia; Natural Composites Research Group Lab, Departement of Materials and Production Engineering, The Sirindhorn International Thai-German Graduate School of Engineering, King Mongkut's University of Technology North Bangkok, Bangkok, 10800, Thailand; Department of Mechanical Engineering, University of Jember, Jember, 68121, Indonesia
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