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Photocatalytic Detoxification of Some Insecticides in Aqueous Media Using TiO 2 Nanocatalyst

Author

Listed:
  • Ahmed Massoud

    (Pesticides Chemistry and Toxicology Department, Faculty of Agriculture, Kafrelsheikh University, Kafrelsheikh 33516, Egypt)

  • Aly Derbalah

    (Pesticides Chemistry and Toxicology Department, Faculty of Agriculture, Kafrelsheikh University, Kafrelsheikh 33516, Egypt)

  • Ibrahim El-Mehasseb

    (Chemistry Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt)

  • Moustafa Saad Allah

    (Pesticides Chemistry and Toxicology Department, Faculty of Agriculture, Kafrelsheikh University, Kafrelsheikh 33516, Egypt)

  • Mohamed S. Ahmed

    (Department of Pathology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh 33516, Egypt)

  • Ashraf Albrakati

    (Department of Human Anatomy, College of Medicine, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia)

  • Ehab Kotb Elmahallawy

    (Department of Biomedical Sciences, University of Leon, 24004 Leon, Spain
    Department of Zoonoses, Faculty of Veterinary Medicine, Sohag University, Sohag 82524, Egypt)

Abstract

The present study was performed to fabricate a titanium dioxide (TiO 2 ) nanocatalyst with proper characteristics for the removal of some insecticides (dimethoate and methomyl) from aqueous media. A TiO 2 catalyst of regular (TiO 2 —commercial—/H 2 O 2 /UV) or nano (TiO 2 —synthesized—/H 2 O 2 /UV) size was employed as an advanced oxidation process by combining it with H 2 O 2 under light. Moreover, the total detoxification of insecticides after treatment with the most effective system (TiO 2 (s)/H 2 O 2 /UV) was also investigated through exploring the biochemical alterations and histopathological changes in the liver and kidneys of the treated rats. Interestingly, the present study reported that degradation rates of the examined insecticides were faster using the TiO 2 catalyst of nano size. Complete degradation of the tested insecticides (100%) was achieved under the TiO 2 (s)/H 2 O 2 /UV system after 320 min of irradiation. The half-life values of the tested insecticides under H 2 O 2 /TiO 2 (c)/UV were 43.86 and 36.28 for dimethoate and methomyl, respectively, whereas under the H 2 O 2 /TiO 2 (c)/UV system, the half-life values were 27.72 and 19.52 min for dimethoate and methomyl, respectively. On the other hand, no significant changes were observed in the biochemical and histopathological parameters of rats administrated with water treated with TiO 2 (s)/H 2 O 2 /UV compared to the control, indicating low toxicity of the TiO 2 nanocatalyst-. Altogether, the advanced oxidation processes using TiO 2 nanocatalyst can be considered as a promising and effective remediation technology for the complete detoxification of methomyl and dimethoate in water. However, further future research is needed to identify the possible breakdown products and to verify the safety of the used nanomaterials.

Suggested Citation

  • Ahmed Massoud & Aly Derbalah & Ibrahim El-Mehasseb & Moustafa Saad Allah & Mohamed S. Ahmed & Ashraf Albrakati & Ehab Kotb Elmahallawy, 2021. "Photocatalytic Detoxification of Some Insecticides in Aqueous Media Using TiO 2 Nanocatalyst," IJERPH, MDPI, vol. 18(17), pages 1-15, September.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:17:p:9278-:d:627945
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    References listed on IDEAS

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    1. Adolphe Monkiedje & Michael Spiteller, 2005. "Degradation of Metalaxyl and Mefenoxam and Effects on the Microbiological Properties of Tropical and Temperate Soils," IJERPH, MDPI, vol. 2(2), pages 1-14, August.
    2. Federica Giambò & Michele Teodoro & Chiara Costa & Concettina Fenga, 2021. "Toxicology and Microbiota: How Do Pesticides Influence Gut Microbiota? A Review," IJERPH, MDPI, vol. 18(11), pages 1-17, May.
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    Cited by:

    1. Haneen H. Shanaah & Eman F. H. Alzaimoor & Suad Rashdan & Amina A. Abdalhafith & Ayman H. Kamel, 2023. "Photocatalytic Degradation and Adsorptive Removal of Emerging Organic Pesticides Using Metal Oxide and Their Composites: Recent Trends and Future Perspectives," Sustainability, MDPI, vol. 15(9), pages 1-43, April.

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