使用纳米生物炭进行可持续的土壤整治,以提高食品安全和资源回收
Monika Raczkiewicz1, Doris Akachukwu2, Patryk Oleszczuk1
1Department of Radiochemistry and Environmental Chemistry, Faculty of Chemistry, 3 Maria Curie-Skłodowska Square, Lublin 20-031, Poland.
Journal of hazardous materials
|May 16, 2025
概括
纳米生物炭有效地使土壤中的潜在有毒元素 (PTEs) 停滞不前,大大减少了它们被生菜吸收,并提高了食品安全. 这为污染的农田提供了可持续的解决方案.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 农业化学 农业化学
背景情况:
- 农业土壤中潜在有毒元素 (PTEs) 的污染对环境和健康构成重大风险.
- 在作物中的PTE持久性和生物积累降低了农业生产率,并对人类健康构成风险.
- 传统的修复方法往往是昂贵的,并且对长期的土壤健康不那么有效.
研究的目的:
- 评估纳米生物炭 (n-BC) 在受污染的土壤中固定PTE.
- 评估n-BC对PTE在生菜 (Lactuca sativa L.) 中生物积累的影响.
- 为了比较n-BC与散装生物炭 (b-BC) 在PTE整治中的有效性.
主要方法:
- 生物炭是由棕树,大米和污水污泥在550°C下生产的,并加工成纳米尺度的形式.
- 进行了为期六周的实验,以评估n-BC修改对PTE生物可用性的影响.
- 使用NICA-Donnan模型来阐明PTE的固定机制.
主要成果:
- 纳米生物炭修正案显著降低了土壤中Cr,Cu,Fe,Mn,Ni,Zn和Pb的生物可用分数,表现优于散装生物炭.
- 沙拉叶中的PTE度大幅下降 (29.7%100%),降低了生物积累因子和健康风险指数.
- 来自污水污泥的n-BC表现出最高的PTE固定和植物吸收减少.
结论:
- 纳米生物炭是一种非常有效的修订,可以在受污染的农业土壤中固定PTE.
- n-BC的应用通过减少在作物中的PTE吸收来提高食品安全.
- 使用n-BC支持循环经济原则,并提供低成本的补救策略.
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