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A Sustainable Approach towards the Restoration of Lead-Contaminated Soils through Nutrient-Doped Olive Waste-Derived Biochar Application

Author

Listed:
  • Muhammad Usama

    (Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
    These authors share co-first authorship and contributed equally to this work.)

  • Muhammad I. Rafique

    (Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
    These authors share co-first authorship and contributed equally to this work.)

  • Jahangir Ahmad

    (Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia)

  • Munir Ahmad

    (Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia)

  • Mohammad I. Al-Wabel

    (Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia)

  • Abdullah S. F. Al-Farraj

    (Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia)

Abstract

The current study was conducted to investigate the efficiency of olive mill waste-derived biochar and its silica-embedded and nutrient-loaded derivatives in immobilizing lead (Pb) and improving nutrients availability in contaminated sandy loam soils. Biochar was produced at 500 °C and latterly modified with silica and enriched with nutrients (P and N). An incubation experiment was conducted for a period of 45 days to observe the dynamics in heavy metals and nutrient release. The produced biochar and its modified versions were characterized for physiochemical and structural properties prior to soil application. The results of incubation trials demonstrated that pseudo second-order kinetic model was fitted best to Pb, P, NO 3 − and NH 4 + release characteristics. Silica embedded and nutrient loaded biochars performed outclass and showed up to 85% decline in Pb release against control treatment. Similarly, 38%, 69% and 59% increase in P, NO 3 − and NH 4 + availability, respectively, was observed with modified biochars, as compared to 22%, 59% and 32% increase with pristine biochar application, respectively. Overall, silica and nutrient doping of biochar resulted in significantly higher immobilization of Pb in contaminated soil and increased the nutrient availability, which could be helpful in restoring heavy metal contaminated soil and improving soil fertility.

Suggested Citation

  • Muhammad Usama & Muhammad I. Rafique & Jahangir Ahmad & Munir Ahmad & Mohammad I. Al-Wabel & Abdullah S. F. Al-Farraj, 2023. "A Sustainable Approach towards the Restoration of Lead-Contaminated Soils through Nutrient-Doped Olive Waste-Derived Biochar Application," Sustainability, MDPI, vol. 15(3), pages 1-16, February.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:3:p:2606-:d:1053938
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    References listed on IDEAS

    as
    1. Marina Moura Morales & Nicholas Brian Comerford & Maurel Behling & Daniel Carneiro de Abreu & Iraê Amaral Guerrini, 2021. "Biochar Chemistry in a Weathered Tropical Soil: Kinetics of Phosphorus Sorption," Agriculture, MDPI, vol. 11(4), pages 1-12, March.
    2. Daniela Losacco & Claudia Campanale & Marina Tumolo & Valeria Ancona & Carmine Massarelli & Vito Felice Uricchio, 2022. "Evaluating the Influence of Nitrogen Fertilizers and Biochar on Brassica oleracea L. var. botrytis by the Use of Fourier Transform Infrared (FTIR) Spectroscopy," Sustainability, MDPI, vol. 14(19), pages 1-13, September.
    Full references (including those not matched with items on IDEAS)

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