增强重金属污染土壤的修复使用生物炭和热带石与添加剂的组合:一个元分析
Rhaila da Silva Rodrigues Viana1, Jhon Kenedy Moura Chagas1, Jorge Paz-Ferreiro2
1Faculty of Agronomy and Veterinary Medicine, University of Brasília, 70910-970, Brasília, DF, Brazil.
Environmental pollution (Barking, Essex : 1987)
|January 1, 2025
概括
生物炭 (BC) 和热带石 (ZE) 有效地降低了土壤中重金属的可用性. 结合BC和ZE,有或没有添加剂,可显著降低受污染的农田中的,铜,和含量.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 整治技术的整治技术
背景情况:
- 土壤重金属 (HM) 污染对食品安全和人类健康构成风险.
- 生物炭 (BC) 和热带石 (ZE) 是减轻农业土壤中HM污染的潜在材料.
- 了解BC和ZE的有效性,无论是单独的还是组合的,对于有效的土壤整治至关重要.
研究的目的:
- 进行元分析,评估BC和ZE对土壤中 (Cd),铜 (Cu), (Pb) 和 (Zn) 的可用性的影响.
- 为了比较BC和ZE单独,组合 (BC + ZE) 和添加剂 (BC + ZE + A) 的有效性.
- 调查添加剂类型对Cd.的修复效率的影响.
主要方法:
- 现有关于BC和ZE在土壤修复中的应用研究的元分析.
- 量化可用的Cd,Cu,Pb和Zn度的变化.
- 基于应用方法 (单独,组合,添加剂) 和添加剂类型的子组分析.
主要成果:
- 单独来看,BC降低了HM可用性10.1%33.0%,ZE降低了18.8%38.9%.
- 结合的BC + ZE使Cd,Cu,Pb和Zn的可用性分别降低了32.6%,54.3%,35.4%和18.3%.
- BC + ZE + A降低了Cd和Pb的可用性,分别降低了54.2%和20.9%. 具有BC + ZE的无机添加剂显示出最大的Cd减少 (86.8%).
结论:
- 生物炭和化物是有效的土壤修补剂,可以减少重金属的可用性.
- 结合应用BC和ZE,特别是与无机添加剂,提供了增强的修复潜力,特别是.
- 由于现有研究有限,需要对,和铜进行进一步的研究.
更多相关视频
05:52Resource Recycling of Red Soil to Synthesize Fe2O3/FAU-type Zeolite Composite Material for Heavy Metal Removal
Published on: June 2, 2022
2.8K
11:14Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent
Published on: February 21, 2017
12.3K
相关概念视频
Bioremediation
18.2K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.2K
Extraction: Advanced Methods
409
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
409
