相关实验视频
Updated: Jan 12, 2026

13:19
Enhanced Oil Recovery using a Combination of Biosurfactants
Published on: June 3, 2022
5.9K
可生物降解的化剂,用于有效的CaSO4 在石油和天然气生产中去除垢
ACS omega
|November 3, 2025
概括
甲基甘油二酸 (MGDA) 和l-谷氨酸N,N-二酸 (GLDA) 显示出有前途的可生物降解替代品溶解硫酸 (CaSO4) 规模在石油和天然气生产. 与传统的化剂相比,MGDA表现出更高的脱效率.
科学领域:
- 石油工程是石油工程中的一个.
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
背景情况:
- 硫酸 (CaSO4) 尺度对石油和天然气运营中的流量保证构成重大挑战.
- 传统的化剂,如氨基多聚碳酸盐 (APCA),可能会对环境和健康产生不利影响.
- 可生物降解的化剂通常被认为是去除的效果和经济性较差.
研究的目的:
- 为了比较可生物降解的化剂甲基甘氨酸二酸 (MGDA) 和l-谷氨酸N,N-二酸 (GLDA) 与不可降解的化剂二乙烯二胺五酸 (DTPA) 和1-乙-1,1-二酸 (HEDP) 的疗效.
- 为了评估它们在高温下溶解CaSO4·2H2O尺度中的性能.
- 确定有效和环保的替代方案,以消除石油和天然气行业的垢.
主要方法:
- 使用MGDA,GLDA,DTPA和HEDP在不同度和温度 (25°C,50°C,100°C) 的CaSO4·2H2O晶体的溶解实验.
- 优化pH值和固体/溶液比率,以进行脱垢.
- 使用X射线衍射 (XRD) 来阐明溶解机制,对分散的固体进行表征.
主要成果:
- 在所有测试条件下,MGDA表现出最高的脱效率,其次是GLDA,DTPA和HEDP.
- 在最佳条件下 (16% MGDA,pH 10,100°C),超过80%的CaSO4·2H2O被去除.
- 在尺度溶解方面,MGDA显著超过GLDA (66%),DTPA (45%) 和HEDP (25%).
结论:
- MGDA和GLDA是有效的生物降解化剂,可以去除CaSO4.
- 在石油和天然气行业,MGDA显示出强大的潜力,可以替代传统的,对环境不那么良好的化剂.
- 溶解机制主要涉及Ca2+离子的直接化,在性条件下形成较小的Ca(OH) 2.
相关概念视频
Extraction: Advanced Methods
1.1K
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...
1.1K
Bioremediation
22.0K
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.
22.0K
Factors Affecting Solubility
36.6K
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:
36.6K
Masking and Demasking Agents
3.4K
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...
3.4K
Coagulation
1.2K
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
1.2K
Ion Exchange
1.1K
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...
1.1K

