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通过应用功能性生物炭来缓解在土和大米植物中的威胁

Xuan Zeng¹, Jin Wang¹, Wenhuan Yuan¹

¹Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China.

Journal of environmental management

|August 3, 2024

概括

用Fe/Mn修改的生物炭有效地降低了大米植物和米土壤的 (Tl) 吸收. 这种环保材料还增强了有益的土壤微生物群落,有助于TI的稳定.

科学领域:

环境科学环境科学
土壤科学土壤科学
生物地质化学生物地质化学

背景情况:

土壤中的 (Tl) 污染通过食物链对人类健康构成重大风险.
生物炭在米系统中对Tl吸收的影响尚不清楚,尽管生物炭有可能降低Tl的生物可用性.

研究的目的:

调查原始和Fe/Mn修饰生物炭对土和大米植物的吸收的缓解作用.
评估生物炭修改对土壤微生物群落的影响及其在Tl稳定中的作用.

主要方法:

将原始生物炭 (5和20克/公斤) 和Fe/Mn修饰生物炭 (FMBC) (5和20克/公斤) 应用于被污染的田土壤.
在整个生长期内种植大米,以评估植物组织中TI的积累.
使用先进的分子技术分析土壤微生物社区结构和功能.

主要成果:

与Fe/Mn修改的生物炭显著降低了所有米植物组织中的Tl积累,FMBC-20与对照组相比,总Tl含量减少了75%以上.
FMBC修正案增强了Tl丰富的土中关键微生物类的丰富性,包括Actinobacteria和Proteobacteria.
对土壤微生物网络的分析表明,FMBC促进了微生物之间的协同相互作用,这对于TI的固定至关重要.

结论:

用Fe/Mn修饰的生物炭是一种有效和环保的材料,可以在受污染的土中固定.
应用FMBC可以成为修复受污染的农田的可行策略,减少对人类健康的风险.
通过FMBC增强有益的土壤微生物群落,在塔稳定中起着至关重要的作用.

关键词:

设计的生物炭.食品安全食品安全微生物组成微生物组成稳定化稳定化稳定化污染污染

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