Kinetic Analysis of the Adsorption of Cibacron Blue onto Bean Peel

Biosorption is a kind of sorption technology in which the sorbent is derived from a biological source. At the moment, biosorption is seen as a simple, cost-effective, and environmentally friendly process that might be employed as a viable alternative to conventional techniques of pollution removal. When it comes to improper textile waste disposal, it falls under one of the branches of bioremediation that is used to reduce contamination in the setting of improper textile waste disposal. The sorption isotherm of Cibacron Blue onto bean peel were analyzed using three models—pseudo-1st, pseudo-2nd and Elovich, and fitted using non-linear regression. The Elovich model was the poorest in fitting the curve based on visual observation and the best was pseudo-2nd order based on statistical analysis such as root-mean-square error (RMSE), adjusted coefficient of determination (adjR2), bias factor (BF), accuracy factor (AF), corrected AICc (Akaike Information Criterion), Bayesian Information Criterion (BIC) and Hannan–Quinn information criterion (HQC). Nonlinear regression analysis using the pseudo-2nd order model gave values of equilibrium sorption capacity qe of 6.164 mg/g (95% confidence interval from 5.918 to 6.410 ) and a value of the pseudo-2nd-order rate constant, k2 of 0.034 (95% confidence interval from 0.024 to 0.045). Further analysis is needed to provide proof for the chemisorption mechanism usually tied to this kinetic.

Pre-consumption textile waste management in the clothing industry in Teresina/PI

The garment industry stands out as the second-largest employer in the manufacturing industry, but it is singled out for environmentally and socially unsustainable practices. In this study, managers of ten companies in Teresina (Piauí State, Brazil) were interviewed to investigate textile waste management methods and instruments and the difficulties and challenges found in management. Methodologically, it was used bibliographical, exploratory, documental and case study research. The research instruments were the questionnaire, direct observation and interview. Data were assessed through content analysis. The results show that part of the production-related waste is donated to manufacture rugs and fuxico, discarded for everyday collection. The conclusion we came across is that the clothing industry in Teresina lacks better management of its production process to generate less waste. When it is not possible to reuse it, dispose of it properly.

Prospects for the transition of the textile industry in the Russian to a closed-loop economy

The life of a modern person today cannot be imagined free from an urgent and urgent problem – the problem of waste recycling. At the same time, the environmental situation in large cities, including industrial enterprises, is mainly determined by the state of the waste treatment system. These include solid municipal waste, as experts call the garbage that is formed daily in everyday life and makes a long way from the garbage chute to the yard container and further to the city dump.At the moment, the infrastructure for collecting and processing secondary raw materials (glass, plastic, paper, batteries, etc.) is developing on the territory of many CIS countries, including Russia, while there are no reception points for textile waste of production and consumption in sufficient quantities, unlike in European countries. There are retail outlets that accept unnecessary textiles from the population, and in return provide discounts on their products. However, taking into account the volume of textile waste generation (about 4.2–4.8 million tons per year), the existing textile waste collection system, which collects only about 0.4% of textile waste, is clearly insufficient. Based on the identified problems, the authors of this article give a socio-ecological and economic assessment of the problem of handling textile waste of consumption in Russia. The analysis of the relationship of the problems of textile waste management to the UN Sustainable Development Goals is carried out. The international experience of applying the principles of the closed-cycle economy in relation to textile waste is considered and recommendations for the transition of the Russian textile industry to a closed-cycle economy are formed.

Reuse of Textile Waste to Production of the Fibrous Antibacterial Membrane with Filtration Potential

Wasted synthetic fabrics are a type of textile waste source; the reuse of them brings environmental protection and turns waste into a valuable material. In this work, the used nylon (polyamide) stockings were transmuted into a fine fibrous membrane via an electrospinning process. In addition, the safety antibacterial agent, monoacylglycerol (MAG), was incorporated into a recycled fibrous membrane. The results revealed that the neat, recycled polyamide (rPA) fibers with a hydrophobic surface could be converted into hydrophilic fibers by blending various amounts of MAG with rPA solution prior to electrospinning. The filtration efficiency and air/water vapor permeability of the two types of produced membranes, neat rPA, and rPA/MAG, were tested. Their filtration efficiency (E100) was more than 92% and 96%, respectively. The membranes were classified according to Standard EN1822, and therefore, the membranes rPA and rPA/MAG were assigned to the classes E10 and E11, respectively. The air permeability was not affected by the addition of MAG, and water vapor permeability was slightly enhanced. Based on the obtained data, prepared rPA/MAG fibrous membranes can be evaluated as antifouling against both tested bacterial strains and antimicrobial against S. aureus.

МULTI-LAYER FIBROUS MATERIAL BASED ON TEXTILE WASTE

At the textile and sewing and knitting enterprises of the Republic of Uzbekistan, the number of which increases every year, a sufficient amount of technological waste is accumulated, which formed in the processes of sizing yarn, starting and setting up equipment, designing and sewing products. Meanwhile, there is a shortage of warm, comfortable, light, soft lining materials for clothes and shoes based on natural raw materials. With the purpose of rational use of textile waste - shredded, disheveled scraps of fabric and knitwear, a multilayer nonwoven material for details of clothing and footwear has been obtained. The material formed by adhesive bonding on one or both sides of the knitted fabric of the main, voluminous nonwoven layer, consisting of shredded textile waste. The bonding of the layers takes place as a result of their passing between heated rolls. The microstructure of the material studied by Fourier-IR spectroscopy and

Strategies and progress in synthetic textile fiber biodegradability

The serious issue of textile waste accumulation has raised attention on biodegradability as a possible route to support sustainable consumption of textile fibers. However, synthetic textile fibers that dominate the market, especially poly(ethylene terephthalate) (PET), resist biological degradation, creating environmental and waste management challenges. Because pure natural fibers, like cotton, both perform well for consumer textiles and generally meet certain standardized biodegradability criteria, inspiration from the mechanisms involved in natural biodegradability are leading to new discoveries and developments in biologically accelerated textile waste remediation for both natural and synthetic fibers. The objective of this review is to present a multidisciplinary perspective on the essential bio-chemo-physical requirements for textile materials to undergo biodegradation, taking into consideration the impact of environmental or waste management process conditions on biodegradability outcomes. Strategies and recent progress in enhancing synthetic textile fiber biodegradability are reviewed, with emphasis on performance and biodegradability behavior of poly(lactic acid) (PLA) as an alternative biobased, biodegradable apparel textile fiber, and on biological strategies for addressing PET waste, including industrial enzymatic hydrolysis to generate recyclable monomers. Notably, while pure PET fibers do not biodegrade within the timeline of any standardized conditions, recent developments with process intensification and engineered enzymes show that higher enzymatic recycling efficiency for PET polymer has been achieved compared to cellulosic materials. Furthermore, combined with alternative waste management practices, such as composting, anaerobic digestion and biocatalyzed industrial reprocessing, the development of synthetic/natural fiber blends and other strategies are creating opportunities for new biodegradable and recyclable textile fibers. Article Highlights Poly(lactic acid) (PLA) leads other synthetic textile fibers in meeting both performance and biodegradation criteria. Recent research with poly(ethylene terephthalate) (PET) polymer shows potential for efficient enzyme catalyzed industrial recycling. Synthetic/natural fiber blends and other strategies could open opportunities for new biodegradable and recyclable textile fibers.

The HDPE composites reinforced with waste hybrid PET/cotton fibers modified with the synthesized modifier

Large amounts of textile waste are generated every year and disposed of through landfill or incineration, leading to numerous environmental and social issues. In this study, waste hybrid polyethylene terephthalate (PET)/cotton fibers were used directly to reinforce high density polyethylene (HDPE) to prepare composites. In order to give full play to the fiber’s reinforcing characteristics, the PET/cotton fibers were further modified with the modifier using a novel synthesized tetraethyl orthosilicate/3-aminopropyl triethoxysilane (KH550)/polyethylene (PE)-g-MAH (MPE) hybrid (TMPE). Fourier transform infrared and scanning electron microscopy (SEM) confirmed that the TMPE was successfully coated on the surface of fibers. Furthermore, compared with the original and the MPE-modified fibers, the thermal stability of TMPE-modified fibers was significantly increased. SEM and mechanical test indicated that the compatibility of the modified fibers with HDPE had been significantly improved, which led to the improvement of mechanical properties. Compared with the original and MPE-modified fibers-reinforced HDPE composites, the bending strength, bending modulus, and impact strength of TMPE-modified fiber-reinforced HDPE composites were improved obviously by 31.7%, 25.7%, and 89.1%, respectively.

Ultra-fast fashion risks eroding sustainability gains

Significance Brands in this segment of the textile and apparel industry such as the Chinese Shein and the US Fashion Nova saw their profits grow sharply as consumers cut spending and shopped online. This has raised concerns about the environmental sustainability of their business models. Impacts Regulation, such as sanctions against the use of unsustainable raw materials such as polyester, would help reduce the carbon footprint. Regulators have yet to curb misleading or false advertising for products incorrectly sold as ‘sustainable’. Civil society pressure will rise for policies to regulate the disposal of clothing and textile waste shipments.