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用加载生物炭辅助植物修复来固定土壤中的,和

María F Serrano¹, Julián E López², Nancy Henao¹

¹Department of Civil and Environmental Engineering, Universidad de los Andes, Carrera 1Este #19A-40, 111711 Bogotá, Colombia.

|January 29, 2024

概括

生物炭与瑞草相结合,有效地弥补土壤重金属污染,改善土壤特性并增加植物中的金属保留. 这种方法显著降低了重金属在土壤中的生物可用性.

科学领域:

环境科学环境科学
土壤科学土壤科学
生物修复是一种生物修复.

背景情况:

重金属 (HM) 土壤污染威胁到粮食安全和公共健康.
有效的补救策略对于减轻这些风险至关重要.
植物补救提供了一个可持续的解决方案,但它的效率可以提高.

研究的目的:

评估 (Cd), (Cr) 和 (Pb) 污染的土壤的整治.
评估草 (Lolium perenne) 在植物修复中的有效性.
调查 (P) 装载生物炭在增强重金属修复中的作用.

主要方法:

使用四种类型的带P的生物炭 (咖啡皮和甘叶基,活性和非活性).
种植L.I.L.的种植在受污染的土壤中种植多年生苗.
在45天内监测P和HM生物可用性,土壤物理化学性质 (pH,EC),以及植物和土壤中的金属度.

主要成果:

组合生物炭和L. 永久性应用改善了土壤的物理化学特性,增加了pH和电导率 (EC).
生物炭的应用增加了11.6%的植物器官中的HM保留率.
土壤中的重金属生物可用性保持在1mg/kg以下,在植物中保持较高的Pb保留率和较低的Cd度.

结论:

带有P的生物炭显著提高了L.L.的植物修复效率. 永恒的. 永久的
这种综合方法有效地固定了土壤中的重金属.
生物炭辅助植物修复为管理土壤中重金属污染提供了一个有前途的战略.

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