Proceedings of International Conference on Applied Innovation in IT
2026/03/31, Volume 14, Issue 1, pp.341-347

Computational Analysis of Phenolic Compound Biodegradation in Polluted Water


Mohammed Abdulrazzaq Alsoufi


Abstract: This study aims to achieve environmental sustainability by using peroxidase extracted from Welsh onion (Allium fistulosum L.) and immobilized on bentonite clay for the biodegradation of phenolic compounds in polluted water. Peroxidase was purified using (NH4)2SO4, DEAE-Cellulose, and Sephacryl S-200. It was obtained with a specific activity of 1345.3 U mg-1, a 4.8-fold purification, and a 23.37% yield. The efficiency of immobilization on bentonite clay was 83%. The optimum pH for the activity of the immobilized enzyme was 7. It was stable at the pH range 5-8 for 30 min with a residual activity of 86% and 82%, respectively. The optimum temperature for the activity and stability was 50°C, with residual activity of 53% at 70°C. The immobilized enzyme retained 100% and 84% of activity after 21 and 30 d, respectively, during storage at 4°C. The activity of the enzyme was stable up to 19 reuses, while it retained 75% after 30 reuses. The treatment of polluted water with immobilized peroxidase 20 U mg-1 led to the removal of 95% of 4-chlorophenol and 100% of phenol at 30 and 25 min, respectively.

Keywords: Enzyme Applications, Immobilized Enzymes, Peroxidase, Phenolic Compounds.

DOI: Under indexing

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