A novel process for ethanol or biogas production from cellulose in blended-fibers waste textiles

Jeihanipour, Azam; Karimi, Keikhosro; Niklasson, Claes

doi:10.1016/j.wasman.2010.06.026

Cited by 139 publications

(70 citation statements)

References 23 publications

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“…Companies carrying out environmentally friendly actions are seeking to reduce their carbon footprint by using packaging material which obtained from recycled and compostable stuff, natural goods are produced without any chemicals like pesticides [38]. In clothing process 2.472MJ energy is consumed; 49.8 % used in sewing, 29.6% in cutting, and 20.6% in packaging [91][92][93][94][95][96][97][98].…”

Section: Packaging Materialsmentioning

confidence: 99%

Textile Industry's Environmental Effects and Approaching Cleaner Production and Sustainability: an Overview

Toprak¹,

Aniş²

2017

JTEFT

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The public awareness and the growing perception of social cognizance about the environment have forced the textile industry to produce environmentally friendly products. For this reason, nowadays many companies and organizations focus on the environmentally friendly way of production. In order to create a sustainable textile, the main change factors have been linked to eco-materials so less and harmless waste, reusing/recycling, lesser usage of energy, water and chemicals and ethical issues in production processes. This article emphasizes the environmental effects of textiles in detail and contributes to cleaner production and sustainability in the textile industry by initiating a discussion on the opportunities for change in textile processes in accordance with the laws. Keywords:

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Section: Packaging Materialsmentioning

confidence: 99%

Textile Industry's Environmental Effects and Approaching Cleaner Production and Sustainability: an Overview

Toprak¹,

Aniş²

2017

JTEFT

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“…produce ethanol and biogas by using enzymatic hydrolysis followed by fermentation [37]. Linen, cotton and viscose can be made into paper pulps, and wool can be recovered and felted or re-spun [31].…”

Section: Environmentally Sustainable Apparel Consumptionmentioning

confidence: 99%

Environmentally Sustainable Apparel Acquisition and Disposal Behaviours among Slovenian Consumers

Žurga

Hladnik

Tavčer

2015

Autex Research Journal

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Fibre production and textile processing comprise various industries that consume large amounts of energy and resources. Textiles are a largely untapped consumer commodity with a strong reuse and recycling potential, still fibres and fibre containing products ends up in landfill sites or in waste incinerators to a large extent. Reuse and recycle of waste clothing results in reduction in the environmental burden. Between 3% and 4% of the municipal solid waste stream in Slovenia is composed of apparel and textiles. This exploratory study examines consumer practices regarding purchase and the disposal of apparel in Slovenia. Data were collected through structured online survey from a representative random sample of 535 consumers. Responses to online questionnaire indicated the use of a variety of textile purchase and disposal methods. The influence of different sociodemographic variables on apparel purchase, disposal and recycling behaviour was examined. Moreover, the differences in the frequency of apparel recycling between consumers with and without an apparel bank available nearby were explored. This research was conducted, since it is crucial to analyse the means by which consumers are currently disposing their textile waste in order to plan the strategies that would encourage them to further reduce the amount of apparel sent to landfills.

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“…If the PET is to be maintained, it has been proposed that the cotton may either be degraded with acid (Ouchi et al 2010) or with microbes (Bernd and Gerahard 1996). Dissolving cotton has also been proposed using different solvents, such as ionic liquids or N-methylmorpholine N-oxide (NMMO), and separating the two components with filtration (De Silva et al 2014;Jeihanipour et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Development of an efficient route for combined recycling of PET and cotton from mixed fabrics

et al. 2017

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Most textile waste is either incinerated or landfilled today, yet, the material could instead be recycled through chemical recycling to new high-quality textiles. A first important step is separation since chemical recycling of textiles requires pure streams. The focus of this paper is on the separation of cotton and PET (poly(ethylene terephthalate), polyester) from mixed textiles, so called polycotton. Polycotton is one of the most common materials in service textiles used in sheets and towels at hospitals and hotels. A straightforward process using 5-15 wt% NaOH in water and temperature in the range between 70 and 90°C for the hydrolysis of PET was evaluated on the lab-scale. In the process, the PET was degraded to terephthalic acid (TPA) and ethylene glycol (EG). Three product streams were generated from the process. First is the cotton; second, the TPA; and, third, the filtrate containing EG and the process chemicals. The end products and the extent of PET degradation were characterized using light microscopy, UV-spectroscopy, and ATR FT-IR spectroscopy, as well as solution and solid-state NMR spectroscopy. Furthermore, the cotton cellulose degradation was evaluated by analyzing the intrinsic viscosity of the cotton cellulose. The findings show that with the addition of a phase transfer catalyst (benzyltributylammonium chloride (BTBAC)), PET hydrolysis in 10% NaOH solution at 90°C can be completed within 40 min. Analysis of the degraded PET with NMR spectroscopy showed that no contaminants remained in the recovered TPA, and that the filtrate mainly contained EG and BTBAC (when added). The yield of the cotton cellulose was high, up to 97%, depending on how long the samples were treated. The findings also showed that the separation can be performed without the phase transfer catalyst; however, this requires longer treatment times, which results in more cellulose degradation.

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A novel process for ethanol or biogas production from cellulose in blended-fibers waste textiles

Cited by 139 publications

References 23 publications

Textile Industry's Environmental Effects and Approaching Cleaner Production and Sustainability: an Overview

Textile Industry's Environmental Effects and Approaching Cleaner Production and Sustainability: an Overview

Environmentally Sustainable Apparel Acquisition and Disposal Behaviours among Slovenian Consumers

Development of an efficient route for combined recycling of PET and cotton from mixed fabrics

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