生物炭的协同Se/S功能化,以有效地固定水和土壤中的多目标重金属
Penghui Guo1, Zhaoshuang Li1, Jinlin Luo1
1College of Materials and Energy, Central South University of Forestry & Technology, Changsha 410004, China.
Journal of hazardous materials
|November 13, 2025
概括
一种新的杏仁生物炭,L-SeBC,有效地从水和土壤中去除和. 这种环保材料在受污染的环境中增强了植物生长和土壤健康.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 生物修复是一种生物修复.
背景情况:
- 由于生物积累, (Cd) 和 (Pb) 构成重大环境和健康风险.
- 现有的修复材料往往具有有限的吸附能力和单介质适用性.
- 开发高效的多场景整治解决方案对于可持续的污染控制至关重要.
研究的目的:
- 开发一种新的,多功能生物炭吸收剂,用于同时修复Cd和Pb.
- 研究开发材料的吸附机制和效率.
- 评估生物炭在土壤修复中的有效性及其对植物健康和土壤微生物群落的影响.
主要方法:
- 用杏仁制备的生物炭与L- (L-Cys) 和 (Se) 共同功能,标记为L-SeBC.
- 吸附实验以确定Cd2+和Pb2+的去除能力和热力学.
- 密度函数理论 (DFT) 计算以阐明吸附机制.
- 土壤修复实验评估L-SeBC对可用的重金属,大豆生长,植物组织金属含量,酶活动和土壤微生物结构的影响.
主要成果:
- L-SeBC显示出对Cd2+ (147.7 mg/g) 和Pb2+ (203.4 mg/g) 的高吸附能力.
- DFT计算显示了化学吸收和物理吸收在增强吸附过程中的协同作用.
- 在土壤中,L-SeBC的应用显著减少了可用的Cd (45.1%) 和Pb (52.1%),促进了大豆的生长,并减少了植物中的金属积累.
- 应用L-SeBC增强了植物和土壤酶活动,并有利地调节了土壤微生物群.
结论:
- 来自废物的L-SeBC是一种具有成本效益和环保的吸附剂,具有高效率,用于Cd和Pb的多场景整治.
- 通过同时修复重金属和改善土壤和植物健康,L-SeBC显示出可持续污染控制的巨大潜力.
- 协同功能化策略为设计先进的生物炭基吸附剂提供了一个有希望的方法.
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