An Analysis of Long-run Environmental Impacts and Multi-criteria-based Prioritisation of the Natural Dyes in the Indian Textile Industry

2003 ◽  
Author(s):  
G. Badri Narayanan
Keyword(s):  
Environmental Impacts ◽  
Textile Industry ◽  
Natural Dyes ◽  
Long Run

scholarly journals Environmental Consequences of Closing the Textile Loop—Life Cycle Assessment of a Circular Polyester Jacket

2021 ◽  
Vol 11 (7) ◽  
pp. 2964
Author(s):  
Gregor Braun ◽  
Claudia Som ◽  
Mélanie Schmutz ◽  
Roland Hischier
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impacts ◽  
Circular Economy ◽  
Textile Industry ◽  
System Analysis ◽  
Action Plan ◽  
The European Union ◽  
Environmental Consequences ◽  
Energy And Material Flows

The textile industry is recognized as being one of the most polluting industries. Thus, the European Union aims to transform the textile industry with its “European Green Deal” and “Circular Economy Action Plan”. Awareness regarding the environmental impact of textiles is increasing and initiatives are appearing to make more sustainable products with a strong wish to move towards a circular economy. One of these initiatives is wear2wearTM, a collaboration consisting of multiple companies aiming to close the loop for polyester textiles. However, designing a circular product system does not lead automatically to lower environmental impacts. Therefore, a Life Cycle Assessment study has been conducted in order to compare the environmental impacts of a circular with a linear workwear jacket. The results show that a thoughtful “circular economy system” design approach can result in significantly lower environmental impacts than linear product systems. The study illustrates at the same time the necessity for Life Cycle Assessment practitioners to go beyond a simple comparison of one product to another when it comes to circular economy. Such products require a wider system analysis approach that takes into account multiple loops, having interconnected energy and material flows through reuse, remanufacture, and various recycling practices.

scholarly journals NATURAL DYES AGAINST GLOBAL TRENDS

2007 ◽  
Vol 07 (4) ◽  
pp. 33-40
Author(s):  
Rafael POLONI ◽  
Martha de LUCA
Keyword(s):  
Natural Dyes ◽  
Global Trends ◽  
Long Run ◽  
Natural Colorants

The appearance of new natural trends due to discovery of many curses caused by natural colorants the short one and in the long run has promoted the substitution, despite slow, of the artificial colorants in the market for the natural ones. However there are many impediments in this substitution since the natural colorants most of the time are unstable to the light, to the heat, to pH, having necessity of deepened studies to become them steady.

Investigating the Potential Use of Papaya Leaf Extract as Natural Dyes in the Textile Industry

2020 ◽  
Vol 991 ◽  
pp. 129-134
Author(s):  
Suharno Rusdi ◽  
Huda F. Maulana ◽  
Nuriaji L. Samudro ◽  
Achmad Chafidz
Keyword(s):  
Textile Industry ◽  
Leaf Extract ◽  
Extraction Process ◽  
Natural Dyes ◽  
Raw Material ◽  
Cotton Cloth ◽  
Synthetic Dyes ◽  
Test Results ◽  
Washing Method ◽  
Solid Liquid

Synthetic dyes are widely used in the majority of the large textile industry. The use of synthetic dyes can cause water pollution from sewage disposal of the textile industry. Some types of synthetic dyes contain heavy metals that are harmful to human health and can damage the environment. With increasing awareness of the current environmental problems, people begin to focus on returning back to natural dyes. These natural dyes can be extracted from various parts of plants, such as leaves, flowers, fruit, wood or stems, and roots. Papaya leaves have the potential to be used as a basic ingredient to make natural dyes due to fairly high chlorophyll content. Therefore, we took the initiative to conduct research on the production of natural dyes from papaya leaf extract. Papaya leaf extract was produced by using a solid-liquid extraction process using two different solvents, ethanol (96%) and n-hexane. From the results of the study, it was found that the most optimum extract results in the extraction process was about 2.20% of the raw material of dried papaya leaves by using ethanol solvent. The prepared cotton cloth was then colored with papaya leaf extract through three simple steps, namely: mordanting, dyeing, and fixation. Fabric staining results then tested its fastness by two methods, namely the rub method and the washing method with soap. From the test results it was found that the fabric which was dyed with papaya leaf extract was not too resistant to fade from rubbing and soap washing. Therefore, further research is needed, such as using other agents during the mordanting and fixation processes.

scholarly journals Textile dyeing by dyestuffs of natural origin

2006 ◽  
Vol 60 (5-6) ◽  
pp. 120-128
Author(s):  
Miodrag Smelcerovic ◽  
Dragan Djordjevic ◽  
Mile Novakovic
Keyword(s):  
Natural Products ◽  
Trade Policy ◽  
Textile Industry ◽  
Textile Dyes ◽  
Natural Dyes ◽  
Natural Source ◽  
Synthetic Dyes ◽  
Natural Origin ◽  
Environmental Friendly ◽  
Textile Dyeing

The textile industry is one of the biggest industrial consumers of water especially dye houses which utilize synthetic dyes and other chemicals. Natural dyes are generally environmental friendly and have many advantages over synthetic dyes with respect to production and application. In recent years, there has been an interest in the application of these dyes due to their bio-degradability and higher compatibility with the environment. A review of previous work in the field of applying dyestuffs of natural source as possible textile dyes is given. From an ecological viewpoint, the substitution of chemical dyes by 'natural products' in textile dyeing may be feasible and may represent not only a strategy to reduce risks and pollutants, but also an opportunity for new markets and new businesses which can develop from the inclusion of ecology in trade policy.

Sustainable ultrasound-assisted ultralow liquor ratio dyeing of cotton fabric with natural turmeric dye

2019 ◽  
Vol 90 (5-6) ◽  
pp. 685-694 ◽  
Author(s):  
Xiaofei Ma ◽  
Yujuan Wei ◽  
Shuo Wang ◽  
Xin Zuo ◽  
Baolei Shen
Keyword(s):  
Cotton Fabric ◽  
Textile Industry ◽  
Sodium Dodecyl ◽  
Ultrasonic Waves ◽  
Natural Dyes ◽  
Synthetic Dyes ◽  
Ultrasonic Power ◽  
Fiber Damage ◽  
Liquor Ratio ◽  
Ultrasonic Assisted

Natural dyes are environmentally friendly and have become important alternatives to synthetic dyes in some dyeing products. Therefore, better extraction and dyeing techniques need to be developed for the dyeing process of natural dyes. In this work, cotton fabric was dyed using turmeric extraction solution under an ultralow liquor ratio (materials to liquor ratio of 1:5) and ultrasonic-assisted conditions. Dye extraction using different dispersants and pH values has been investigated and three-factor-three–level Box–Behnken design was employed to explore the dyeing conditions. It was found that sodium dodecyl sulfate systems and ultrasonic waves can effective improve the dyeing depth under neutral condition. The K/ S value can reach 2.53 with ultrasonic power of 200 W, dyeing time of 30 min and temperature of 40℃. Scanning electron microscope images showed that the application of ultrasound did not cause obvious fiber damage. The developed technique could be used in the textile industry to make dyeing cotton fibers with natural dyes more sustainable than it is at present.

scholarly journals Molecular Characterization And Ecotoxicological Evaluation of The Natural Dye Madder And Its Chlorinated Products

2021 ◽  
Author(s):  
Harold S. Freeman ◽  
Tuane C. dos Santos ◽  
Yufei Chen ◽  
Josiane A.S. Vendemiatti ◽  
Adria C. de Oliveira ◽  
...  
Keyword(s):  
Textile Industry ◽  
Degradation Products ◽  
Natural Dyes ◽  
Synthetic Dyes ◽  
General Belief ◽  
Daphnia Similis ◽  
Ecotoxicological Evaluation ◽  
Wastewater Disinfection ◽  
Main Component ◽  
Advance Knowledge

Abstract There has been increased interest in the use of natural dyes for textile coloration as alternatives to synthetic dyes, due to the general belief that natural dyes are more environmentally friendly. However, natural dyes have poor affinity for textiles, which can lead to high dye levels in the resultant wastewater. While chlorine treatment has proven to be effective for dye wastewater disinfection and decolorization, this process can also lead to the formation of more toxic degradation products for certain synthetic dyes. On the other hand, little information is available regarding the ecotoxicity of natural dyes and their chlorination products. To advance knowledge in this area, madder was selected due to its historical importance and wide application in the textile industry. Specifically, we sought to characterize the chlorine-induced degradation products of an aqueous madder solution and to assess their ecotoxicity. The main component of the present madder sample was Alizarin (89.8%). Chlorination led to complete decolorization, and 2-hydroxynaphthalene-1,4-dione and phthalic anhydride were identified as key degradation products. Chlorination of madder decreased toxicity to Daphnia similis (microcrustacean) 10-fold and removed the toxicity to Raphidocellis subcapitata (algae), when compared to the parent dye.

scholarly journals Between Pricing and Investment, What Mobility Policies Would Be Advantageous for Île-de-France?

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Fabien Leurent ◽  
Sheng Li
Keyword(s):  
Environmental Impacts ◽  
Travel Demand ◽  
Production Costs ◽  
Environmental Damage ◽  
Structural Factors ◽  
Long Run ◽  
Mobility System ◽  
Local Air Pollution ◽  
A Prospective Study ◽  
Improve Service Quality

This article provides a prospective study of mobility policies for the private car and public transit (PT) modes of transportation in the Paris Ile-de-France region. Different economic instruments are considered: pricing of car traffic or transit service, subsidizing PT, and investment in PT  to improve service quality. Policy scenarios are defined and assessed according to multiple criteria: users’ benefits, PT  production costs and fare revenues, public subsidies, and environmental damage both local (air pollution) and global (carbon emissions). The social, economic, and environmental impacts are monetized and aggregated in a wellbeing function. While a first set of scenarios are specified directly, two other sets of scenarios are calculated by optimizing the wellbeing function with respect to action variables on the transit mode in the medium or long run. The regional mobility system is modeled in a structural way: concentric subregions, travel demand segmented by geographical and behavioral conditions, environmental impacts based on road and rail traffic, and car mode and transit mode depicted each as a set of technical components involving 1 to 3 structural factors that can make action levers. This model-based methodology allows for trading between different kinds of impacts and identifying performance-oriented policy packages.

Sign in / Sign up

Export Citation Format

Share Document