Microplastic removal by ozone oxidation in cooling wastewater of food packaging industry

TOPKAYA E., ARSLAN A., İŞGÖREN M., SEZER M., VELİ S.

Chemical Engineering Science, cilt.306, 2025 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 306
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1016/j.ces.2025.121287
  • Dergi Adı: Chemical Engineering Science
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Aqualine, Biotechnology Research Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Pollution Abstracts, zbMATH, DIALNET, Civil Engineering Abstracts
  • Anahtar Kelimeler: COD, Cooling Wastewater, Food packaging industry, Microplastic, Ozone oxidation, Polyethylene
  • Kocaeli Üniversitesi Adresli: Evet

Özet

Microplastic (MP) pollution of aquatic systems is a global concern. Plastics such as polyethylene (PE) are widely used in food packaging for transportation, protection, and easy handling. This study, investigated the removal efficiency of MPs and changes of chemical oxygen demand (COD) parameter found in the cooling wastewater of the food packaging industry that produces PE stretch films by ozone oxidation process. To evaluate the effect of MPs on removal efficiency, the ozone dose (5–12.5 ppm), pH (3–11) and reaction time (15–90 min) were studied. The highest MP (92 %) and COD (49 %) removal efficiencies were obtained at 10 ppm ozone dose, pH 5, and 75 min. Fourier transform infrared (FTIR) analyses were performed to identify the structure of the MPs and their structural changes after ozone treatment. Energy consumption and cost were determined based on COD parameters as 12.29 kWh/m3 and 0.28 €/m3. MP removal treatment cost was 0.079 €/m3.