相关实验视频

Updated: May 28, 2025

Isolation and Screening from Soil Biodiversity for Fungi Involved in the Degradation of Recalcitrant Materials

Isolation and Screening from Soil Biodiversity for Fungi Involved in the Degradation of Recalcitrant Materials

Published on: May 16, 2022

用可生物降解化剂对废弃物污染土壤进行绿色整治,并进行优化和风险评估

Hongbo Li¹, Shiqin Long¹, Shoushu Wei¹

¹State Key Laboratory of Advanced Environmental Technology/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China.

Environmental pollution (Barking, Essex : 1987)

|February 13, 2025

概括

可生物降解的化剂有效地从受污染的土壤中去除稀土元素 (REEs),改善土壤健康. N,N-bis ((碳素甲基) -L-谷氨酸 (GLDA) 显示了最高的REE去除效率,提供了一个可持续的修复解决方案.

科学领域:

环境科学环境科学
土壤科学土壤科学
绿色化学绿色化学

背景情况:

稀土元素 (REEs) 是由于工业用途而产生的新兴环境污染物.
传统的土壤洗方法会导致酸化和盐化,损害土壤生态系统.
可生物降解化剂 (BCs) 为 REE 整治提供了一个可持续的替代方案.

研究的目的:

评估可生物降解化剂 (GLDA,ISA,PASP) 用于从污染的农业土壤中去除可再生能源.
确定最佳的冲洗参数,并评估BCs对REE流动性和土壤健康的影响.
为了确定REE土壤修复最有效的BC.

主要方法:

使用GLDA,ISA和PASP在不同度,比率和时间的土壤冲洗实验.
响应表面分析以优化洗参数.
分析了REE去除效率,移动性,生物可用性和土壤酶活性.

主要成果:

随着BC度,液体/固体比率和洗时间的增加,REE去除效率提高,而随着pH的提高,洗时间减少.
最佳参数产生了总的REE去除效率为50.8% (GLDA),40.5% (ISA) 和23.2% (PASP).
BC洗减少了可减少的REEs,降低了生物可用性,并改善了土壤酶活性.

结论:

可生物降解的化剂是REE土壤修复的有效和环保剂.
GLDA在消除废弃物和减轻环境风险方面表现出卓越的表现.
BC的应用通过提高酶活性和降低REE生物可用性,对土壤健康产生积极影响.

关键词:

可生物降解的化剂环境风险环境风险稀土元素稀土元素稀土元素土壤的健康状况土壤清洗土地清洗

更多相关视频

Resource Recycling of Red Soil to Synthesize Fe2O3/FAU-type Zeolite Composite Material for Heavy Metal Removal

Resource Recycling of Red Soil to Synthesize Fe2O3/FAU-type Zeolite Composite Material for Heavy Metal Removal

Published on: June 2, 2022

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

Published on: November 28, 2014

相关概念视频

Bioremediation

Bioremediation

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.

Extraction: Advanced Methods

Extraction: Advanced Methods

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...

Masking and Demasking Agents

Masking and Demasking Agents

EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...