Enhancing herbicide adsorption in low-fertility soil using sugarcane biochar: Insights from Imazapic dynamics.

Autor: Lopes JRA; Federal Rural University of Pernambuco, Graduate Program in Environmental Engineering, Rua Dom Manuel de Medeiros, s/n, Dois Irmãos, PE 52171-900, Brazil. Electronic address: jessicarafaellyalmeida@hotmail.com., Mendonça ZLL; Federal Rural University of Pernambuco, Graduate Program in Environmental Engineering, Rua Dom Manuel de Medeiros, s/n, Dois Irmãos, PE 52171-900, Brazil. Electronic address: zabele.lyra@gmail.com., da Silva JPS; Federal University of Pernambuco, Department of Nuclear Energy, Av. Prof. Luiz Freire, 1000 - Curado, PE 50740-545, Brazil. Electronic address: joao.ouri@gmail.com., Amaral A; Federal University of Pernambuco, Department of Nuclear Energy, Av. Prof. Luiz Freire, 1000 - Curado, PE 50740-545, Brazil. Electronic address: ademir.amaral@ufpe.br., Netto AM; Federal University of Pernambuco, Department of Nuclear Energy, Av. Prof. Luiz Freire, 1000 - Curado, PE 50740-545, Brazil. Electronic address: andre.netto@ufpe.br.
Jazyk: angličtina
Zdroj: Journal of contaminant hydrology [J Contam Hydrol] 2024 Sep; Vol. 266, pp. 104412. Date of Electronic Publication: 2024 Aug 03.
DOI: 10.1016/j.jconhyd.2024.104412
Abstrakt: Biochar amendment has emerged as a potential solution for preventing, remediating, and mitigating agricultural compound pollution. This groundbreaking technique not only improves crucial soil properties like porosity, water retention capacity, cation exchange capacity, and pH, but also intricately impacts the interaction and retention mechanisms of polluting molecules. In this study, we investigate the dynamic of the herbicide Imazapic when subjected to applying pyrolyzed biochars, specifically at temperatures of 300 and 500 °C, within the context of a low-fertility soil characterized as dystrophic Yellow Ultisol (YUd) in a sugarcane cultivation area in Igarassu-PE, Brazil. The biochars were produced from sugarcane bagasse by pyrolysis process in a muffle furnace. In laboratory conditions, with saturated soil columns under steady-state, analyses of the mechanisms involved in interaction and transport and determining hydrodispersive parameters for Imazapic were performed by the two-site nonequilibrium transport model using the CXTFIT 2.0 program. Samples of YUd soil amended with biochar pyrolyzed at 300 °C presented a negligible interaction with Imazapic. However, adding biochar pyrolyzed at 500 °C (BC500) to the soil samples enhanced the adsorption coefficient and improved the interaction with Imazapic. This research points out that biochar produced from agricultural waste biomass, such as sugarcane bagasse specifically pyrolyzed at 500 °C, offers a potential means to adsorb herbicides, reducing their leaching to deeper layers of the amended soils and the risk of groundwater contamination and potential environmental negative impacts.
Competing Interests: Declaration of competing interest 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.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: