Functionalized biochar from waste as a slow-release nutrient source: Application on tomato plants.

Autor: Rosa D; Department of Chemical Engineering Materials Environment & UdR INSTM, Sapienza-Università di Roma, Via Eudossiana 18, 00184, Roma, Italy., Petruccelli V; Department of Environmental Biology, Sapienza-Università di Roma, Piazzale Aldo Moro 5, 00185, Roma, Italy., Iacobbi MC; Department of Chemical Engineering Materials Environment & UdR INSTM, Sapienza-Università di Roma, Via Eudossiana 18, 00184, Roma, Italy., Brasili E; Department of Environmental Biology, Sapienza-Università di Roma, Piazzale Aldo Moro 5, 00185, Roma, Italy., Badiali C; Department of Environmental Biology, Sapienza-Università di Roma, Piazzale Aldo Moro 5, 00185, Roma, Italy., Pasqua G; Department of Environmental Biology, Sapienza-Università di Roma, Piazzale Aldo Moro 5, 00185, Roma, Italy., Di Palma L; Department of Chemical Engineering Materials Environment & UdR INSTM, Sapienza-Università di Roma, Via Eudossiana 18, 00184, Roma, Italy.
Jazyk: angličtina
Zdroj: Heliyon [Heliyon] 2024 Apr 09; Vol. 10 (8), pp. e29455. Date of Electronic Publication: 2024 Apr 09 (Print Publication: 2024).
DOI: 10.1016/j.heliyon.2024.e29455
Abstrakt: Licorice processing waste was pyrolyzed at different temperatures (500 and 700 °C) to obtain biochar (BC500 and BC700) for use as a slow-release fertilizer on Solanum lycopersicum . The materials were characterized through BET analysis, SEM, elemental analysis, pH zc , and pyrolysis temperature effect was evaluated. The biochars were functionalized by the impregnation method to enrich them with nitrogen, phosphorus, and potassium (NPK), and desorption tests were performed in aqueous solution at different pHs (5 and 7). The pseudo-second-order model described well the release of all 3 macronutrients tested, BC500 was found to have slower release kinetics due to smaller pore size, reaching adsorption/desorption equilibrium after 14 days, compared with 10 for BC700, K des were lower in all 3 cases and NPK content was higher, initial pH did not change the release kinetics. BC500 was selected as an agricultural soil conditioner by testing at both different dosages of BC (0-25 %) and different NPK ratios (3:1:4 and 4:1:3). The treatment significance was evaluated. The best treatment resulted in BC dosage of 25 % nutrient ratio 4:1:3 which increased, compared to the control, total chlorophyll content (+38 %) and carotenoids (+15 %).
Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(© 2024 The Authors.)
Databáze: MEDLINE
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