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Harnessing nature's best fibers for the textile industry

Harnessing nature's best fibers for the textile industry

The textile industry, while a symbol of progress and innovation, conceals an alarming environmental impact with its excessive use of synthetic materials and harmful production processes. The industry produces waste at an alarming rate. Only 1% of used clothes are recycled into new clothes; the rest end up in landfills.

Amidst this ecological reckoning, natural fibers have emerged as a ray of hope, offering an eco-friendly alternative. Organic cotton, linen (flax), wool, hemp, and bamboo present biodegradable and renewable options, significantly reducing water consumption and pollution compared to their synthetic counterparts. With the increasing demand for sustainability in fashion, the adoption of natural fibers aligns seamlessly with conscious consumerism, fostering a greener and more harmonious relationship between the industry and the planet.

The environmental impact of the fashion industry

The fashion industry's environmental impact is significant and far-reaching, touching various aspects of the environment, including climate change, water resources, biodiversity, and waste management. With synthetic fibers dominating the fashion industry, there’s a need to shift focus to more viable alternatives.

Energy consumption

The manufacturing processes involved in producing synthetic fibers are energy-intensive, further compounding the industry's environmental burden. From extraction to processing and dyeing, significant amounts of energy are required, leading to heightened carbon emissions and resource depletion. For example, the energy used to produce a kilogram of polyester and nylon is 125 MJ and 130 MJ, respectively. This is much higher than the 60MJ and 10MJ required to make cotton and linen.

Microplastic pollution

One of the most insidious consequences of synthetic fibers is the shedding of microplastics. During washing and wear, tiny plastic particles are released from synthetic garments and enter water bodies, ultimately finding their way into marine ecosystems. This microplastic pollution poses a grave threat to marine life and has the potential to enter the human food chain, with far-reaching ecological and health implications.

Non-biodegradability

Unlike natural fibers, synthetic materials are typically non-biodegradable. When discarded, these fabrics persist in landfills for centuries, contributing to the global waste crisis and further burdening already strained waste management systems.

The majority of fibers produced are man-made (synthetic) (Source)The majority of fibers produced are man-made (synthetic) (Source)

Chemical use

The production and processing of synthetic fibers, such as polyester and nylon, involve the use of various chemicals, with formaldehyde and dioxane being two of the most prominent. Formaldehyde is often used in the textile industry as a finishing agent to enhance wrinkle resistance and durability of synthetic fabrics.

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It is a potent chemical known for its adverse health effects.

Organic cotton as an alternative

Organic cotton is an eco-friendly alternative to conventional cotton. It is grown without the use of synthetic pesticides, genetically modified organisms (GMOs), and chemical fertilizers. Instead, organic cotton cultivation relies on natural farming practices that promote soil health, biodiversity, and the well-being of farmers and workers. The organic certification ensures that the entire production process adheres to strict ecological and social standards, making it a preferred choice for environmentally conscious consumers and sustainable fashion brands like People Tree and Amour Vert.

Environmental benefits of organic cotton

Conventional cotton is known to be one of the most chemically intensive crops. By avoiding synthetic pesticides and chemical fertilizers, organic cotton farming significantly reduces chemical pollution in soil and water, protecting ecosystems and promoting healthier agricultural communities.

Organic cotton is an eco-friendly alternative to conventional cotton Organic cotton is an eco-friendly alternative to conventional cotton

More than 75% of the land that produces organic cotton is located in predominantly rainfed areas, meaning organic cotton cultivation often employs rain-fed water sources. Thus, it reduces the strain on freshwater resources. Furthermore, water-efficient practices like drip irrigation help optimize water usage. Also, organic cotton farming promotes biodiversity by creating a habitat for beneficial insects and wildlife. This fosters a more balanced ecosystem, reducing the need for synthetic pest control measures.

Hemp as a versatile alternative

Hemp is a versatile fiber derived from the Cannabis sativa plant. Unlike its close cousin, marijuana, hemp contains minimal levels of the psychoactive compound THC, making it non-intoxicating and safe for industrial use. Hemp has been used to create textiles, ropes, paper, and other materials due to its strength, durability, and eco-friendly properties. Jungmaven, a US-based fashion brand, makes clothing primarily with hemp fiber.

Hemp cultivation is relatively environmentally friendly compared to many other crops. It requires fewer pesticides and herbicides because of the lack of natural predators. Hemp also has a rapid growth rate, reaching maturity in just a few months. This fast growth makes it an attractive option for sustainable agriculture and reduces the pressure on land resources.

Environmental benefits of hemp

Hemp is a strong carbon dioxide (CO2) absorber, capturing large amounts of CO2 during its rapid growth. Hemp is said to be twice as effective as trees at absorbing and locking up carbon. Carbon sequestration mitigates the effects of greenhouse gas emissions, making hemp a valuable tool in the fight against climate change.

Hemp's extensive root system helps prevent soil erosion and compaction, improving soil structure and fertility. Additionally, hemp cultivation can regenerate degraded soils, restoring their health and productivity.

Linen (flax) - one of the oldest known fibers

Linen, also known as flax, is a natural fiber derived from the stalks of the flax plant (Linum usitatissimum). It is one of the oldest known fibers used by humans, with a history dating back thousands of years. Linen is highly regarded for its exceptional strength, durability, and natural luster, making it a popular choice for various textile applications.

A painting on the production of flax, dated from the 14th century (https://sup.tocco.earth/storage/v1/object/public/blog-images/fiber-for-textile/File:58-aspetti_di_vita_quotidiana,abbigliamento_lino,Taccuino_Sa.jpg))A painting on the production of flax, dated from the 14th century (Source: Wikipedia)

The cultivation process begins by sowing flax seeds in the spring, and the plants mature within 100 days. Once the flax plants reach maturity, they are harvested by pulling them out of the ground to preserve the full-length fibers. The harvested flax stems undergo a process called retting, where they are left in water or exposed to moisture and microorganisms. This natural retting process helps break down the pectin that binds the fibers to the woody core, making it easier to separate the fibers.

Environmental benefits of flax

Flax helps to prevent soil erosion, as its roots help to bind the soil together. This can help to protect soil quality and prevent the loss of topsoil. By effectively holding the soil in place, flax prevents the loss of topsoil. Topsoil erosion can deplete the soil's fertility and hinder agricultural productivity.

Flax's ability to safeguard against erosion is particularly beneficial in regions prone to heavy rains or strong winds, where soil erosion poses a significant environmental challenge. In addition, it requires significantly less fertilizer than cotton. Flax cultivation does not require a lot of irrigation and, in many cases, is fed by natural rainfall alone.

Bamboo as an excellent example of water-efficient agriculture

Bamboo fiber is a natural fiber that is made from the cellulose-rich inner bark of bamboo plants. It is a strong, durable, and absorbent fiber that is often used to make textiles, such as clothing, home textiles, and industrial products. Bamboo fibers come in a variety of forms, including bamboo viscose and bamboo lyocell.

Bamboo fibers contain a natural antimicrobial agent called bamboo kun, which helps prevent bacteria and fungi growth. This property makes bamboo textiles hypoallergenic and suitable for sensitive skin.

Environmental benefits of bamboo

Bamboo is an excellent example of water-efficient agriculture. Unlike conventional crops like cotton, which require substantial irrigation, bamboo can thrive on natural rainfall in many regions. This low water usage not only conserves valuable freshwater resources but also contributes to water-wise agricultural practices.

Due to its rapid growth, bamboo is considered a highly renewable resource. Unlike traditional trees used for wood and fiber, which may take several decades to mature, bamboo can be harvested and regrown in a relatively short time frame. This renewable characteristic helps alleviate pressure on natural forests and supports sustainable resource management.

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Wool - used since the dawn of society

Wool is a natural fiber derived from the fleece of sheep and certain other animals, such as goats (cashmere and mohair), alpacas, and rabbits (angora). It has been used for thousands of years to create warm and durable textiles. Wool is valued for its excellent insulating properties, softness, resilience, and ability to regulate body temperature, making it suitable for a wide range of clothing and home textiles.

Wool is obtained through shearing, a process where the fleece of the animal is carefully removed using electric clippers or manual shears. Once the fleece is removed, it is sorted based on fiber length, quality, and color. After sorting, the wool undergoes cleaning and washing to remove dirt, grease, and other impurities. The cleaned wool is then carded or combed to align the fibers and remove any remaining impurities. Finally, the prepared wool is spun into yarn.

Wool after being cleaned (https://sup.tocco.earth/storage/v1/object/public/blog-images/fiber-for-textile/File:CSIRO_ScienceImage_11160_Siroscour.jpg))Wool after being cleaned (Source: Wikipedia)

While the process of obtaining wool described above is standard and necessary for textile production, it isn’t always the case. Brands and suppliers must prioritize sourcing from farms that adhere to humane practices, providing proper care and living conditions for the animals. Engaging in partnerships with suppliers that prioritize animal welfare and uphold stringent standards can foster a more ethical and sustainable wool industry.

Environmental impacts of wool

While wool is renewable and biodegradable, sheep farming can have a higher environmental impact in terms of land use, as it requires ample grazing land. Overgrazing and land degradation can occur if not managed sustainably. However, practices like regenerative agriculture can help mitigate these impacts by promoting soil health and biodiversity. Ethical and responsible management, including rotational grazing, proper waste management, and reduced chemical usage, can significantly reduce the environmental footprint of wool production.

Final thoughts

The environmental impact of natural fibers in the textile industry cannot be overlooked. Cotton, while widely used, poses challenges due to water-intensive and chemical-heavy cultivation. Synthetic fibers contribute to pollution, microplastics, and greenhouse gas emissions. However, organic cotton, hemp, bamboo, linen, and wool offer promising solutions.

Organic cotton mitigates chemical pollution and water wastage, while hemp stands out for its fast growth and low environmental impact. Bamboo's rapid growth and renewability make it an eco-friendly choice, while linen's durability and biodegradability promote circularity. Wool, despite land use concerns, remains renewable and biodegradable.

By embracing these natural fibers, the textile industry can foster a more sustainable future. Encouraging responsible farming practices, reducing water consumption, and implementing closed-loop processing are vital steps towards sustainability. Increased use of these eco-friendly fibers aligns with the growing demand for environmentally conscious products and supports a greener, more responsible textile industry.


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References

A remedy to our microplastic epidemic? | tocco. (n.d.). https://tocco.earth/article/microplastic-epidemic/

Bamboo Fabric Basic Health Benefits. (2018, March 30). The Bamboo Factory. https://www.thebamboofactory.com/blogs/news/bamboo-fabric-basic-health-benefits

Bamboo to beautiful: assessing bamboo as a regenerative material for the textile industry | tocco. (n.d.).  https://tocco.earth/article/bamboo-as-material-for-textile/

Beridze, S. (2022). How bad are synthetic fabrics for the environment? Worse than you think! Impakter. https://impakter.com/synthetic-fabrics-are-bad-for-the-environment/

Hemp. (n.d.). Agriculture and Rural Development. https://agriculture.ec.europa.eu/farming/crop-productions-and-plant-based-products/hemp_en

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NadleyD. (2020, January 16). The Benefits of Hemp for Regenerative Agriculture - PurePower. PurePower. https://livepurepower.com/benefits-of-hemp-for-regeneratie-agriculture/

Organic Cotton Accelerator. (2022, March 7). Organic vs Conventional Cotton | OCA. https://organiccottonaccelerator.org/why-organic-cotton/organic-vs-conventional/

Plester, J. (2022, November 24). Could hemp be a key tool in fight against climate change? The Guardian. https://www.theguardian.com/environment/2022/nov/24/could-hemp-be-a-key-tool-in-fight-against-climate-change#

Sánchez, L. D. (2021). Almost 13,000 tons of microfibers released into European waters every year. Ocean Clean Wash. https://www.oceancleanwash.org/2020/06/almost-13000-tons-of-microfibers-released-into-european-waters-every-year/

Schlesinger, W. (2018, November 26). The Fabric for Our Lives. Translational Ecology. https://blogs.nicholas.duke.edu/citizenscientist/the-fabric-for-our-lives/

The Environmental Footprint of Organic Cotton | The Organic Center. (n.d.). https://www.organic-center.org/site/environmental-footprint-organic-cotton

Written by Anh N. on 07/08/2023

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