Presented By
Marosha Rana 2022-TXE-18
Abdur Rehman 2022-TXE-19
Awais Mehmood Khan 2022-TXE-20
Presented To
Dr. Faiza Safdar
Problem:
You are working in a processing mill which is facing problems related to sustainable dyeing.
Due to rapid awareness of sustainability, your customers are preferring sustainable products.
There is need to develop sustainable colored fabrics to attract customers and hence, expand
the business and portfolio. As a textile colorist, you are directed to analyse various
sustainable dyeing techniques to meet the requirements
Conventional Dyeing
Techniques in the
Textile Industry:
Facts and Figures
The textile industry has long relied on conventional dyeing techniques
to color fabrics, each with its own unique advantages and
environmental considerations. This presentation will explore the facts
and figures surrounding these methods and their impact on the industry.
Introduction to Textile Dyeing
Coloring Fabrics Historical Significance
Textile dyeing is the process of Dyeing has been an integral part
imparting color to natural or of the textile industry for
synthetic fibers, yarns, and centuries, with techniques
fabrics. evolving over time.
Commercial Importance Technical Complexity
Dyeing allows manufacturers to Dyeing involves intricate chemical
meet consumer demand for a processes and specialized
wide range of colored textile equipment to achieve desired
products. results.
Traditional Dyeing Methods: Natural and Synthetic
Dyes
Natural Dyes Synthetic Dyes
Derived from plant, animal, and mineral sources, natural Developed in the 19th century, synthetic dyes are more
dyes have been used for centuries. readily available and offer a wider range of colors.
These dyes are often more environmentally friendly but can However, they can be more harmful to the environment and
be less colorfast and require specialized techniques. require careful handling and disposal.
Worker Health and Safety
Concerns in Textile Dyeing
Chemical Exposure
Textile workers can be exposed to a variety of hazardous
chemicals during the dyeing process.
Respiratory Risks
Airborne particles and vapors from dyeing operations can
pose respiratory health risks.
Skin Irritation
Direct contact with dyes and auxiliaries can cause skin
irritation and other dermatological issues.
The Future of Conventional
Dyeing in the Industry
While conventional dyeing techniques have long been the industry
standard, growing environmental concerns and technological
advancements are driving a shift towards more sustainable alternatives.
As the textile industry continues to evolve, the future of conventional
dyeing will depend on its ability to adapt and minimize its environmental
impact.
2022-TXE-19
Abdur Rehman Saad
Need of sustainability in textile
dyeing
Sustainability means meeting our own needs without
compromising the ability of future generations to meet
their own needs.
Sustainability is paramount in the textile
industry, particularly in the dyeing process.
Conventional dyeing methods can have significant
MZ
environmental impacts, but innovative sustainable
alternatives are emerging to reduce the industry's
carbon footprint.
Environmental impact of
conventional dyeing
1 Water Pollution 2 Energy Consumption
Conventional dyeing
methods like direct, These processes often
mordanting, beam, stock, require significant energy
and exhaust dyeing can for heating, cooling, and
release harmful chemicals other steps, contributing to
and dyes into waterways, a larger carbon footprint.
harming aquatic life.
3 Hazardous Waste
The use of toxic chemicals and dyes can lead to the generation
of hazardous waste, posing risks to human health and the
environment.
Waste generation and disposal
impacts
1 Waste Generation
Textile dyeing processes can generate significant
amounts of solid, liquid, and gaseous waste, which
must be properly managed, e.g. pre-consumer waste &
post-consumer waste.
2 Waste Disposal
Improper disposal of dyeing waste can lead to the
contamination of water bodies, soil, and air, harming
the environment and human health.
3 Environmental Impacts
The accumulation of textile waste in landfills,
waterways, and soil can disrupt ecosystems, reduce
agricultural productivity, and pose long-term risks.
Water consumption, energy consumption & pollution
Water Consumption Energy Consumption Pollution??
Conventional dyeing methods The high heat and multiple Untreated wastewater and air
can require thousands of liters of processing steps in traditional emissions from dyeing operations
water per kilogram of fabric, dyeing lead to significant energy can contaminate the surrounding
straining limited water usage, contributing to a larger environment, harming ecosystems
resources. carbon footprint. and human health.
Conventional dyeing alternatives
Microwave-Assisted Foam Dyeing
Dyeing Uses foam as a carrier for
Leverages microwave dyes, reducing water and
energy to improve dye energy consumption
penetration and reduce compared to traditional
processing time. methods.
Enzymatic Dyeing Nano-Bubble Dyeing
Employs enzymes to enhance Utilizes nano-bubbles to
dye absorption, minimizing improve dye diffusion, leading
chemical usage and to higher efficiency and
wastewater generation. reduced water usage.
Benefits of sustainable dyeing
Water Savings Energy Efficiency Waste Reduction
Sustainable dyeing methods can Innovative processes like Sustainable dyeing alternatives
reduce water consumption by up microwave and plasma-assisted minimize the generation of
to 90% compared to dyeing can significantly decrease hazardous waste, promoting a
conventional techniques. energy requirements. cleaner and more
circular textile
industry.
Customer demand for
sustainable textiles. Why?
Eco-Conscious Brand Reputation
Consumers Adopting sustainable dyeing
Customers are increasingly practices can enhance a
seeking out sustainable brand's reputation, appealing
textile products, driven by to eco- conscious consumers
growing environmental and setting it apart from
awareness and a desire to competitors.
reduce their carbon footprint.
Market Expansion
Offering a range of sustainable textile products can help
businesses tap into the growing demand for environmentally-
friendly textiles and expand their customer base.
2022-TXE-20
Awais Mehmood Khan
Why
Sustainable
Dying
Techniques?
125 liters of water per
kilogram of cotton
fibers
Fixation: 70-80%
200,000 tons of dyes
(worth 1 billion
USD) are lost
Waterless technologies for
sustainable dyeing
Advantages:
reduces 90% of water usage
75% less energy
90% less chemicals
Air Dye
Advantages:
99% or more dye fixation
90% less water is used
85% less energy
DyeCoo
