封存,回收和重复使用的阴离子,阴离子和非离子染料,使用本托尼特
Foysal Ahmed Nobel1, Robiul Islam Fahim1, Rakibul Hassan1
1Department of Dyes and Chemical Engineering, Bangladesh University of Textiles, Dhaka, Bangladesh.
Environmental science and pollution research international
|September 9, 2025
概括
天然托尼特有效地从废水中去除了阴离子,阴离子和非离子染料. 回收的染料在织印刷中成功地被重复使用,展示了托尼特.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 织废水含有多种不同的染料类别 (离子,离子,非离子),这给环境带来了挑战.
- 有效和可持续的染料去除方法对于织行业的废水处理至关重要.
- 天然托尼特是一种低成本的吸附剂,具有染料修复的潜力.
研究的目的:
- 量化评估天然托尼特对三种染料类的吸附性能.
- 为了研究操作参数 (接触时间,剂量,pH,温度) 对染料去除的影响.
- 评估回收染料的可重复使用性和本托尼特在资源回收方面的潜力.
主要方法:
- 批量吸附实验是使用合成织废水进行的,这些废水中添加了阴离子,阴离子和非离子染料.
- 吸附参数包括接触时间,吸附剂剂量,pH值和温度均有系统的变化.
- 染料度用UV-Vis光谱学量化,并分析了吸附动力学和异热量.
主要成果:
- 在最佳条件下,本托尼特实现了离子 (99.98%) 和非离子 (94.04%) 染料的高去除效率,而离子染料的中度去除 (77.13%).
- 吸附动力学跟随阴离子染料的伪二阶 (化学吸附) 和非离子染料的伪一阶 (物理吸附).
- 兰慕尔异常热是最好的吸附描述,其最大容量分别为0.486,0.373和0.483毫克g−1的阴离子,阴离子和非离子染料.
结论:
- 天然托尼特是一种有效的,低成本的吸附剂,用于从织废水中去除多种染料类别.
- 班托尼特通过在织印刷中成功重复使用吸附的阴离子和非离子染料来促进资源回收.
- 这项研究突出了本托尼特在综合废水处理和可持续染料再利用应用中的潜力.
相关概念视频
01:17Ion 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
04:01Factors Affecting Solubility
36.7K
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:
36.7K
01:09Ion-Exchange Chromatography
1.9K
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...
1.9K
01:15Dialysis
1.6K
Dialysis is a diffusion-based purification process that separates analyte molecules from a complex matrix. This is accomplished by allowing molecules in the solution to pass through a semipermeable membrane into a liquid on the other side. The membrane is usually made of cellulose acetate or cellulose nitrate, and the second liquid must be miscible with the solution. Ions (e.g., chloride or sodium) or organic molecules (e.g., glucose) can pass through the membrane pores, which generally have...
1.6K
03:46Qualitative Analysis
23.6K
For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...
For instance, group IV...
23.6K
01:30Capillary Electrophoresis: Applications
1.2K
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,...
1.2K