通过修改吸附剂去除化物:修改方法和吸附机制的审查
Yucheng Liu1, Shanwei Wang1, Mingyan Chen1
1College of Chemistry and Chemical Engineering, Research Institute of Industrial Hazardous Waste Disposal and Resource Utilization, Southwest Petroleum University, Chengdu, 610500, China.
Chemistry, an Asian journal
|March 12, 2025
概括
这项研究审查了化物吸附方法,发现金属基吸附剂在去除这种污染物方面最有效. 目前的限制包括容量和pH值范围,突出需要改进的吸附材料.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学 化学 化学
背景情况:
- 化物污染对人类健康和工业构成风险.
- 吸附是一种具有成本效益的化物去除方法.
- 存在各种吸附材料,每个都有独特的特性.
研究的目的:
- 为了分析化物吸附机制.
- 为了比较不同修改吸附剂的容量.
- 为了确定当前的化物去除技术的局限性.
主要方法:
- 对天然矿物质,生物质,金属氧化物和新兴吸附剂进行比较分析.
- 审查四种吸附剂修饰技术:酸激活,热激活,表面功能化和复合材料形成.
- 基于容量和适用性的吸附剂性能评估.
主要成果:
- 基于金属的吸附剂显示出优越的化物吸附性能.
- 修改方法显著提高了吸附剂的效率.
- 发现的关键限制是吸附能力不足和狭窄的有效pH范围.
结论:
- 基于金属的吸附剂和先进的修饰技术对化物去除有希望.
- 需要进一步的研究来克服当前容量和pH适用性的局限性.
- 开发新型吸附材料对于有效的环境整治至关重要.
相关概念视频
Factors Affecting Solubility
32.9K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
32.9K
Voltammetry: Stripping Methods
160
Anodic Stripping Voltammetry (ASV), Cathodic Stripping Voltammetry (CSV), and Adsorptive Stripping Voltammetry (AdSV) are electrochemical techniques used to determine trace amounts of analytes in solution. These methods involve applying a potential to an electrode and measuring the resulting current.
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
160
Extraction: Advanced Methods
398
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...
398
Enhanced Elimination of Poison
468
Poison can be effectively removed from the gastrointestinal (GI) tract through various decontamination procedures.
Antidotes serve a crucial role in counteracting the effects of poison by inhibiting enzymes responsible for producing harmful drug metabolites. In some cases, these toxic metabolites can be neutralized by endogenous cosubstrates, which are maintained at specific concentrations to prevent interaction with cellular macromolecules and subsequent cell death.
Renal excretion is the...
Antidotes serve a crucial role in counteracting the effects of poison by inhibiting enzymes responsible for producing harmful drug metabolites. In some cases, these toxic metabolites can be neutralized by endogenous cosubstrates, which are maintained at specific concentrations to prevent interaction with cellular macromolecules and subsequent cell death.
Renal excretion is the...
468
Masking and Demasking Agents
2.3K
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...
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...
2.3K
Ion Exchange
518
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
518


