从聚的单体回收利用的二二甲溶液的吸附性脱色
Charlotte Lücking1,2, Mandy Paschetag1, Stephan Scholl1
1Institute for Chemical and Thermal Process Engineering, Technische Universität Braunschweig, Langer Kamp 7, 38106 Braunschweig, Germany.
Polymers
|February 13, 2026
概括
聚织品的回收包括去聚合,以回收单体. 活性炭有效地从回收的铁酸中去除染料,使得高质量的织品到织品的回收利用,并支持循环经济.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- 聚织品废弃物是一个重大的全球挑战.
- 回归单体回收技术可以从PET中回收甲酸 (TPA) 和乙烯基醇等单体.
- 污染物,染料和添加剂的完全分离对于有效的聚回收至关重要,可以通过脱聚合实现.
研究的目的:
- 为了研究从聚织废物的性水解中获得的二甲酸盐溶液的吸附性脱色.
- 评估各种吸附剂,温度和pH值对脱色效率的影响.
- 确定在回收 TPA 中实现工业相关的颜色值的最佳条件.
主要方法:
- 聚织品废弃物的性水解,以获得二二甲酸盐溶液.
- 使用各种吸附剂进行吸附性脱色实验.
- 系统地研究温度 (30-80°C) 和pH (7-12) 的影响.
- 在经过处理的铁酸溶液中分析颜色值.
主要成果:
- 活性炭被确定为有效的吸收剂,用于脱色.
- 最佳吸附条件被确定为中性pH值和80°C的温度.
- 回收的甲酸通过活性碳吸附实现了工业规格内的颜色值.
结论:
- 使用活性炭的吸附性脱色是一种可行的净化回收的二甲醇酸的方法.
- 实现高质量的回收TPA是实现高质量的织品到织品回收的关键一步.
- 这一过程极大地促进了聚织品循环经济的发展.
相关概念视频
Analyte Adsorption and Distribution
2.8K
In certain chromatographic separations, solutes transfer between the mobile phase and the stationary phase via sorption, which typically refers to the process of adsorption. For many chromatographic systems, the sorption process often depends on the polarity of the compounds—an expression of the overall dipole moment within the molecule. During the separation process, there is competition between the solute and solvent for adsorption to the stationary phase. Highly polar compounds and...
2.8K
Types of Step-Growth Polymers: Polyesters
2.6K
The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the polymer...
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the polymer...
2.6K
Recycling Endosomes and Transcytosis
3.6K
The recycling endosome, also known as the endosomal recycling compartment (ERC), is a part of the slow-recycling process of the endocytic pathway. Molecules internalized through receptor-mediated endocytosis are either degraded in the lysosomes or are recycled to the plasma membrane through the fast- or slow-recycling route.
The recycling endosome is not a single organelle but an extensively tubulated network of recycling pathways. It functions in storing molecules or transporting them across...
The recycling endosome is not a single organelle but an extensively tubulated network of recycling pathways. It functions in storing molecules or transporting them across...
3.6K
Ideal Solutions
22.7K
According to Raoult’s law, the partial vapor pressure of a solvent in a solution is equal or identical to the vapor pressure of the pure solvent multiplied by its mole fraction in the solution. However, Raoult's Law is only valid for ideal solutions. For a solution to be ideal, the solvent-solute interaction must be just as strong as a solvent-solvent or solute-solute interaction. This suggests that both the solute and the solvent would use the same amount of energy to escape to the...
22.7K
General Properties of Solutions
36.1K
Many common substances around us exist as a solution, such as ocean water, air, and gasoline. All solutions are mixtures of substances that are composed of varying amounts of two or more types of atoms or molecules. A mixture with a non-uniform composition is a heterogeneous mixture, whereas a mixture with a uniform composition is a homogeneous mixture. The components that make the homogeneous mixture are evenly spread out and thoroughly mixed.
36.1K
Solution Formation
38.1K
There is no one solvent that can dissolve every type of solute. Some substances that readily dissolve in a certain solvent might be insoluble in a different solvent. A simple way to predict which substances dissolve in which solvent is the phrase "like dissolves like". This means that polar substances, such as salt and sugar, dissolve in a polar substance like water. In contrast, non-polar substances are more soluble in non-polar solvents such as carbon tetrachloride.
This selective...
This selective...
38.1K


