相关实验视频
Updated: Jun 23, 2025

04:40
Electrostatic Method to Remove Particulate Organic Matter from Soil
Published on: February 10, 2021
4.7K
用电化学制造的气体氧化剂修复受甲基污染的土壤
Leticia Mirella da Silva1, Ismael F Mena2, Cristina Sáez2
1São Carlos Institute of Chemistry, University of São Paulo, São Carlos, SP, P.O. Box 780, CEP 13560-97, Brazil; Department of Chemical Engineering. Faculty of Chemical Sciences and Technologies. University of Castilla La Mancha. Campus Universitario s/n 13071 Ciudad Real, Spain.
Chemosphere
|June 21, 2024
概括
这项研究探讨了使用二氧化和臭氧来清洁被甲污染的土壤. 二氧化有效地去除了甲,而臭氧在激活时显示出有前途,提供了一种低影响的补救方法.
科学领域:
- 环境科学 环境科学
- 土壤修复土壤的修复.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 甲基是广泛使用的杀虫剂,可以污染土壤.
- 有效和低影响的土壤修复技术对于环境保护至关重要.
- 气体氧化剂为in-situ和ex-situ土壤处理提供了潜力.
研究的目的:
- 评估二氧化 (ClO2) 和臭氧 (O3) 对甲基污染土壤修复的有效性.
- 为了比较ex-situ (土壤冲洗) 和in-situ (地下气体注入) 应用方法.
- 评估这些处理对土壤条件的影响.
主要方法:
- 涉及两个气态氧化剂的前性研究:二氧化和臭氧.
- 现场应用:土壤洗与氧化剂泡相结合.
- 现场应用:气体氧化剂通过穿孔管道通过地表引入.
主要成果:
- 现场:仅仅使用臭氧是无效的;使用H2O2或紫外线激活提高了效率. 二氧化实现了完全的甲基耗,但是能源密集型的.
- 在现场:臭氧和二氧化分别实现了7.8%和9.2%的甲基基去除.
- 在现场处理对土壤的pH值和离子含量进行了最小的改变,与某些电化学方法不同.
结论:
- 二氧化在土壤洗中对甲基基去除非常有效,但存在挑战.
- 气态氧化剂,特别是二氧化的现场应用提供了一个有希望的,低影响的修复策略.
- 土壤条件的最小改变使得这些气态氧化剂技术对未来的发展具有吸引力.
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
Methods of Sterilization II: Chemical Methods
6.3K
In healthcare, the chemical method of sterilization uses chemical sterilants to treat surgical instruments and medical supplies to help prevent the transmission of infectious pathogens to patients. Due to heat sensitivity, most medical supplies and equipment should not be exposed to high temperatures. These parts include rubber, plastic, glass, and other similar elements.
Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...
Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...
6.3K
Carboxylic Acids to Methylesters: Alkylation using Diazomethane
2.1K
Carboxylic acids react with diazomethane in an ether solvent via alkylation at the carboxylate oxygen atom to give methyl esters of the corresponding acid with excellent yields.
2.1K
Radical Oxidation of Allylic and Benzylic Alcohols
1.9K
Activated manganese(IV) oxide can selectively oxidize allylic and benzylic alcohols via a radical intermediate mechanism. Primary allylic alcohols are oxidized to aldehydes, while secondary allylic alcohols yield ketones. The redox reaction of potassium permanganate with an Mn(II) salt such as manganese sulfate (under either alkaline or acidic conditions), followed by thorough drying, yields the oxidizing agent: activated MnO2. While MnO2 is insoluble in the solvents used for the reaction, the...
1.9K
Oxidation of Alcohols
12.9K
In this lesson, the oxidation of alcohols is discussed in depth. The various reagents used for oxidation of primary and secondary alcohols are detailed, and their mechanism of action is provided.
The process of oxidation in a chemical reaction is observed in any of the three forms:
The process of oxidation in a chemical reaction is observed in any of the three forms:
12.9K

