一种混合电凝-生物复合材料吸附系统用于染料废水的脱色
Jain Teresa Jose1, Priya K L2, Suchith Chellappan1
1Environmental Engineering and Management, UKF College of Engineering and Technology, Kollam, Kerala, India.
Environmental research
|March 27, 2024
概括
一种新的混合电凝生物复合体系统 (H-EC-BC) 显著提高了甲基色染料去除效率. 这种环保的方法比传统的电凝效率高7倍,因此适用于工业应用.
科学领域:
- 环境科学与工程环境科学与工程
- 水处理技术水处理技术
- 材料科学 材料科学 材料科学
背景情况:
- 染料是常见的工业污染物,对环境构成风险.
- 电凝 (EC) 对于去除染料是有效的,但其运营成本很高.
- 研究混合工艺以提高染料去除效率并降低染料去除成本.
研究的目的:
- 为了研究混合电凝-生物复合材料 (H-EC-BC) 系统的性能,以去除甲基色染料.
- 为了优化电凝参数,并从Psidium瓜叶中合成/特征化生物复合物.
- 与传统EC相比,评估H-EC-BC系统的能源效率.
主要方法:
- 使用Fe-SS电极优化电凝参数 (pH,时间).
- 合成和表征 (SEM,FTIR,EDAX,XRD) 的生物复合物从Psidium瓜亚娃叶.
- 评价生物复合材料的吸附性能和吸附等温体 (Langmuir, Freundlich) 和动力学 (伪第一,伪第二顺序) 的适配.
主要成果:
- 优化EC在30分钟内在pH6下达到99%的甲基色去除效率.
- 合成的生物复合材料具有多孔结构和高碳/氧含量;达到65%的吸附效率.
- 该H-EC-BC系统显示了92.78%的清除效率,并且比标准EC节能大约7倍.
结论:
- 混合电凝-生物复合体系统在去除甲基色染料方面非常有效.
- 来自Psidium瓜叶的生物复合物显示出作为吸附材料的前景.
- H-EC-BC系统为工业废水处理提供了成本高效和节能的解决方案.
相关概念视频
01:06Coagulation
292
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...
292
01:09Ion-Exchange Chromatography
463
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...
463
00:46Bioremediation
18.3K
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.
18.3K
01:17Precipitation and Co-precipitation
1.8K
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
1.8K
01:09Colloidal precipitates
576
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
576
01:30Capillary Electrophoresis: Applications
395
Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
395