Green textiles processing
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This presentation discusses green and eco-friendly textile processing. It defines green production as reducing environmental risks without degrading the environment. Textile industries are major polluters, releasing liquid effluents and air pollutants. Green textiles use minimal resources and energy in farming, processing, and manufacturing. Natural fibers, dyes, and recycling can make textiles more sustainable. Water recycling and effluent treatment plants help reuse water and reduce strain on supplies.
Green textiles processing
- 1. A PRESENTATION ON GREEN TEXTILES PROCESSING BY S. M. ZAKI MUJAHID (172219) MD. AL-ARAFIN KAOSAD (172220)
- 2. CONCEPTS FOR GREEN PRODUCTION The GREEN PRODUCTION is a production that results in reducing environmental risks and ecological scarcities, and that aims for sustainable development without degrading the environment. The green production can be described as ECO-FRIENDLY PRODUCTION. Green Production or Eco-friendly involves activities such as reducing and recycling.
- 3. WHY SHOULD TEXTILE INDUSTRIES GO GREEN? The textile industry is one of the most pollutants releasing industries of the world. The liquid effluents released by the textile industry are the most disturbing area of concern. 20 percent of all fresh water pollution is made by textile treatment and dyeing. Boilers, diesel generators produce pollutants that are released into the air. The pollutants generated include Suspended Particulate Matter (SPM), sulphur di oxide gas, oxide of nitrogen gas, etc. Contamination of the air, water, and land by textile industries and its raw material manufacturing units has become a serious threat to the environment.
- 4. Some Harmful Textile Chemicals and Their Eco-friendly Substitutes Existing Chemicals Uses Proposed substitutes Polyvinyl alcohol (PVA) Yarn size Potato starch or carboxymethylcellulose (CMC) Carbon tetrachloride (CTC) stain removers Detergent stain-removers Calcium and sodium hypochlorite Bleaching Hydrogen peroxide, ozone at cold Nonyl phenyl ethylene oxide adducts (APEO) Detergent, emulsifier Fatty alcohol ethylene oxide adducts, alkylpolyglycosides Synthetic non-biodegradable surfactants Various purposes Sustainable and highly biodegradable surfactants from dextrins Synthetic non-biodegradable surfactants + solvent Coatings and degreasing ‘solvosurfactants’ acting both solvent and surfactant, derived from glycerol (bio diesel) Kerosene Pigment printing Water-based thickeners Formaldehyde Finishing, dye fixing Polycarboxylic acid, non-formaldehyde products Silicones and amino-silicones + APEO emulsifier Softener Eco-friendly softeners, wax emulsions
- 5. GREEN TEXTILE PROCESSING Green textiles are farmed, processed and manufactured with minimal impact on the environment with regard to energy, resource, raw material usage; greenhouse gases / Carbon dioxide emissions; toxic emissions and waste generation. Using organic fabrics is not the only way the fashion industry is going "green" and protecting the future of our natural resources. At least 8,000 chemicals are used to turn raw materials into textiles. So this chemicals also converted by natural elements or enzymes. Both recycling fashion and organic clothing can contribute to eco sustainable development.
- 6. ORGANIC CLOTHING To qualify as being organic, textiles should be made from natural sources, such as plants or animals, collected or from organic manufactured. Number of sustainable practices has been implemented by various textile processing industries such as Eco- friendly bleaching; Peroxide bleaching; Eco-friendly dyeing and Printing; Low impact dyes; Natural dyes; Azo Free dyes; Phthalates Free Printing.
- 7. NATURAL FIBERS Natural fibers or natural fibers are fibers that are produced by plants, animals, and geological processes. Further this fibers are proceed into yarn and then apparels. Some natural fibers Cotton Jute Wool Silk Coir Flax Alpaca Sisal Kapok Ramie Cashmere Organic Linen* Abaca Modal Mohair Rayon* Hemp Angora Azlon*
- 8. NATURAL DYES Several dye chemicals could be replaced by natural resources or coloring materials. Few example natural dyes is given below : Color Source Orange carrots, gold lichen, onion skins Red-brown pomegranates, beets, bamboo, hibiscus, bloodroot Red-purple red sumac berries, basil leaves, day lilies, pokeweed berries, huckleberries Yellow bay leaves, marigolds, sunflower petals, paprika, turmeric, celery leaves, lilac twigs, Queen Anne’s Lace roots, mahonia roots, barberry roots, yellowroot roots
- 9. COLOR SOURCES Pink berries, cherries, red and pink roses Blue indigo, woad, red cabbage, elderberries, red mulberries, blue berries, purple grapes Green artichokes, sorrel roots, peppermint leaves, snapdragons, lilacs, grass, nettles, peach leaves Brown dandelion roots, walnut hulls, tea, coffee, acorns, ivy
- 10. OTHER TEXTILE PROCESS WHERE NATURAL RESOURCES CAN BE USED Chlorine-free bleaching Dry-heat fixation Eco finishing Ink-jet printing Vegetable tanning Using enzymes
- 11. WATER RECYCLING Waste water recycling is the use of tertiary treated waste water in the dye baths and/or for irrigation purposes. This water is suitable for human contact but is not potable. Its use reduces the strain on potable water supplies particularly in arid climates and is an effective way to re-use this valuable resource. ETP describes the processes used for treating wastewater that is produced by industries as an undesirable by-product.
- 12. BENEFITS OF ECO-FRIENDLY GREEN TEXTILES Organic clothing is skin friendly Good news for the environment Increased affordability of attires Creating awareness and ensuring responsibility Eliminates fatalities in factories Maintenance is easy Garments are of better quality Easy to care for
- 13. RESTRICTION OF GREEN/ ECO-FRIENDLY TEXTILE Cost Availability Color pay-off Temperature pH Loss Specific Catalyst or Ions