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相关概念视频

Extraction: Advanced Methods00:56

Extraction: Advanced Methods

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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...
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Ion-Exchange Chromatography01:09

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Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
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Extraction of Organochlorine Pesticides from Plastic Pellets and Plastic Type Analysis
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使用离子液体提取有机杀虫剂的计算研究.

Mohammad K Al Hassan1, Mustafa S Nasser1,2, Ibnelwaleed A Hussein1,2

  • 1Gas Processing Center, College of Engineering, P.O. Box 2713, Qatar University, Doha, Qatar.

Heliyon
|February 26, 2024
PubMed
概括

离子液体 (ILs) 显示出从水中去除有机杀虫剂的潜力. 特定的IL,如1,3-二甲基-伊米达化,显示出高选择性和有效的农药提取和环境修复的能力.

关键词:
在COSMO-RS的基础上,计算研究是研究计算的.提取 提取 提取杀虫剂是一种杀虫剂.离子液体是一种离子液体.有机化物 有机化物热物理特性 热物理特性废水是废水,废水就是废水.

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科学领域:

  • 环境化学环境化学
  • 绿色化学 绿色化学
  • 分离科学 分离科学

背景情况:

  • 杀虫剂污染了水资源,并造成了环境风险.
  • 作为替代溶剂,离子液体 (IL) 提供可调节的特性和环境效益.
  • 由于其独特的特性,ILs对于提取农药是有效的.

研究的目的:

  • 选离子液体 (ILs) 来有效从水中提取有机杀虫剂.
  • 使用计算方法预测各种IL的选择性和容量.
  • 确定有希望的ILs用于环保的农药修复.

主要方法:

  • 使用COSMO-RS (真实溶剂导体样选模型) 进行IL选.
  • 评估了165个ILs (33个,5个离子) 用于提取特定的有机杀虫剂.
  • 分析了电荷密度概况,以了解IL和杀虫剂之间的相互作用.

主要成果:

  • 确定了具有增强选择性和杀虫剂能力的ILs,特别是化物/异原子离子和基ILs.
  • 1,3-二甲基-伊米达化物对BHC.表现出最高的选择性 (1074.06).
  • 2-基乙三甲基氨基化物表现出BHC提取的最高能力 (84.0).

结论:

  • 离子液是从水中提取有机杀虫剂的有效和环保溶剂.
  • 使用COSMO-RS进行计算查是确定最佳ILs的可行方法.
  • 进一步开发IL有望为先进的水利技术提供潜力.