Environmental impacts of denim

Amutha, K.

doi:10.1016/b978-0-08-102043-2.00002-2

Cited by 23 publications

(19 citation statements)

References 7 publications

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“…The textile industry is a representative one that involves the use of toxic chemicals, such as benzene, quinoline, formaldehyde, and dioxins, for the production of fabric dyes that have caused severe water pollution. 2,3 For example, indigo, a representative natural blue pigment from the plant Indigofera tinctoria, has been chemically synthesized by using a toxic compound called aniline to meet market demand. 4 Metabolic engineering-based overproduction of natural pigments can provide a solution for this problem of nonsustainable chemical production of fabric dyes.…”

Section: ■ Introductionmentioning

confidence: 99%

“…However, in the present age, many industries still rely on chemical synthesis for manufacturing desired products, which should be reconsidered for better sustainability. The textile industry is a representative one that involves the use of toxic chemicals, such as benzene, quinoline, formaldehyde, and dioxins, for the production of fabric dyes that have caused severe water pollution. , For example, indigo, a representative natural blue pigment from the plant Indigofera tinctoria , has been chemically synthesized by using a toxic compound called aniline to meet market demand …”

Section: Introductionmentioning

confidence: 99%

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High-Level Production of the Natural Blue Pigment Indigoidine from Metabolically Engineered Corynebacterium glutamicum for Sustainable Fabric Dyes

Ghiffary

Prabowo

Sharma

et al. 2021

ACS Sustainable Chem. Eng.

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The textile industry has caused severe water pollution by using many toxic chemicals for producing fabric dyes. In response to this problem, indigoidine has attracted attention as an alternative natural blue dye, but it is necessary to achieve a high-level production to compete with synthetic blue dyes. Here we report a metabolically engineered Corynebacterium glutamicum capable of producing indigoidine to a high concentration with high productivity. First, the blue-pigment indigoidine synthetase (bpsA) gene from Streptomyces lavendulae was expressed in C. glutamicum, which carries strong fluxes toward L-glutamate, a precursor of indigoidine. Production performance of this base strain, already producing 7.3 ± 0.3 g/L indigoidine from the flask, was further improved by streamlining the intracellular supply of the precursors L-glutamate and L-glutamine, strengthening the phosphotransferase system-independent glucose uptake system, channeling carbon fluxes from glycolysis to the tricarboxylic acid (TCA) cycle, and minimizing byproducts formation. Fedbatch fermentation of the final strain BIRU11 produced 49.30 g/L indigoidine with a productivity of 0.96 g/L/h, the highest titer and productivity to date. Finally, indigoidine from the fed-batch fermentation of the BIRU11 strain was used to dye white cotton fabrics to examine its color and performance. This study demonstrates the potential of producing fabric dyes in a sustainable manner by using a metabolically engineered bacterium.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High-Level Production of the Natural Blue Pigment Indigoidine from Metabolically Engineered Corynebacterium glutamicum for Sustainable Fabric Dyes

Ghiffary

Prabowo

Sharma

et al. 2021

ACS Sustainable Chem. Eng.

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Section: Denim Clothes Industrymentioning

confidence: 99%

“…Denim is one of the better-known fabrics in the world, with more than 400 years of history (Regan 2015;Amutha 2017). Although denim was developed as resistant sailcloth, used in workers' clothing, nowadays, it is used in several types of clothing in the fashion industry, mainly jeans pants (Amutha 2017). In general, the denim fabric is made of cotton, and about 10-20% of cotton generation in the world is employed in denim production (Schrott and Paul 2015;Annapoorani 2017).…”

Section: Denim Clothes Industrymentioning

confidence: 99%

“…Denim is the world's best-selling textile item (Schrott and Paul 2015). The jeans' global production is estimated at over 1.7 billion pairs per year, with over 70% of denim textile production concentrated in Asian countries (Amutha 2017). However, the largest consumers of textile denim are the USA, Europe, and Japan, which together represent 64% of global jeans consumption.…”

Section: Denim Clothes Industrymentioning

confidence: 99%

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Biocomposites from Cotton Denim Waste for Footwear Components

et al. 2021

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The materials' production applied in the footwear industry corresponds to about 80% of the impacts generated in the total useful life of shoes. Cotton denim waste presents great opportunities for recycling. Logistical issues are the main point to industrial waste availability as raw material. This research aimed to describe the case study of denim wastes logistics from a clothes factory at Toritama city, Pernambuco state, Brazil (known as the "city of jeans"), and to develop biocomposites from cotton denim wastes (shredded and powder fibers) for application in the footwear components. A better destination could be provided for all denim wastes generation since it is easy to separate different denim composition wastes in the factory before the collection. However, blended fabrics are a complex issue for denim waste employment. The obtained biocomposite layers could be improved for applications in footwear components, mainly "soft" composites in insoles and "condensed" composites in toe-puffs and other shoe reinforcement components. Denim wastes employed in footwear components could reduce the amounts that end up in landfills and could replace certain petroleum-based components in shoes. Thus, the footwear industry could invest in future research and applications of biocomposites for sustainable manufacturing models.

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Utilization of montmorillonite in biostoning process as a strategy for effluent reuse

Costa

Lima

Valério

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND Biostoning using cellulase is a process used in place of the traditional stone‐washing of denim. This process guarantees a more controlled removal of the Indigo blue dye from the cotton fibers, giving an aged‐look and softness to denim. However, it also causes backstaining and generates a high volume of colored effluent. In this context, this work evaluated the possibility to reuse the effluent from the biostoning process combined with montmorillonite addition. It is an attractive and sustainable alternative to the conventional process. RESULTS In this study, four biostoning processes were conducted and the results showed that the moment of the montmorillonite addition affected the washing effects. Clay addition after 40 min of beginning of the process provided washing effects on denim similar to those obtained by traditional biostoning and the highest effluent discoloration percentage (above 96%). Moreover, due to Indigo dye adsorption, the clay addition reduced the backstaining. The results also showed the that washing effects obtained after two consecutive reuses were not significantly different from those obtained with fresh water. CONCLUSION Adding montmorillonite to biostoning led to a discolor effluent that can be used in repeated processing. Overall, the utilization of clay in the process can be considered a promising alternative to reduce water consumption and environmental impacts without compromising the washing effects. © 2020 Society of Chemical Industry (SCI)

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Environmental impacts of denim

Cited by 23 publications

References 7 publications

High-Level Production of the Natural Blue Pigment Indigoidine from Metabolically Engineered Corynebacterium glutamicum for Sustainable Fabric Dyes

High-Level Production of the Natural Blue Pigment Indigoidine from Metabolically Engineered Corynebacterium glutamicum for Sustainable Fabric Dyes

Biocomposites from Cotton Denim Waste for Footwear Components

Utilization of montmorillonite in biostoning process as a strategy for effluent reuse

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