Sustainability
Jaaii Neem tech


 

Where we are :

The textile dyeing industry now a days faces a lot of problems, the world avoids neither colours nor pollution. The modern world expects everything colourful but excepts being polluted. But the excessive use of chemicals in dyeing greatly pollutes the mother earth and also waterbodies especially riverbeds in Asian countries.

Now-a-days enzymes play a vital role in textile dyeing industry.

Enzymes are widely used in pre-treatment and after treatment in the dyeing process, because enzymes are eco-friendly, human friendly and cost effective. In fact the use of only enzymes won’t be sufficient to protect the environment, as the dyeing of one kilogram of cotton with reactive dyes demands 30-100g/L concentration of salt (Nacl (or) Na2SO4), 5-20g/L concentration of alkali, 70-150 litre of water and 0.001-100g of dyestuff. Hence the requirement of a large amount of electrolyte leads to environmental problems.

In addition, inadequate dye exhaustion and fixation result in coloured effluents. Usually the textile dyeing industry is a water intensive industry with water being used in every stage of dyeing. So every textile dyeing plant requires large volumes of water and produces high volumes of effluent wastewater. Further the dye fixation potency on cellulose fibres is low. It ends up in an extremely coloured dye effluent that is unfriendly to the environment.

The use of high concentration of salts and alkalis might create further effluent issues. It might especially pollute the land and water bodies, Since TDS, TSS, COD, BOD, colour value, and water turbidity are high and additionally the consumption of energy, time and man power is also high.

So, many researchers focus on introducing salt-free / low salt dyeing technology for reactive dyes in order to reduce the consumption of the amount of electrolyte, alkali, water, energy, time, cost and man power.

Hence JAAII NEEM TECH has worked on the above mentioned inconveniences in the textile dyeing industry for more than 10 years and invented the technology, SALT FREE/ LOW SALT to promote dyeing with cost effective and to protect the environment.
Our inventive technology stands second to none in the field of textile reactive dyeing in the world, though there are technologies based on salt free which are unfortunately neither a perfect levelling agent nor a salt alternative but costly.

So our salt free technology is successfully used in the textile dyeing market.

The main aim of the present innovation is to promote dyeing with less pollution in various steps especially pre-treatment such as wetting, bio-scouring, desizing and levelling using enzymes; dyeing with least sodium chloride or sodium sulphate using low salts and low alkalis, and finally treated with neutralization, soaping and softening using enzymes.

The present innovation is to provide affinity of dyestuff, acceleration of the dyestuff association and lowering of its solubility using the low salts as an electrolyte for the migration, adsorption and fixation of the dyestuff.

It also effects to acquire maximum pollution free environment and excellent levelling property. Advantages of the novel method of dyeing for cellulose material over the conventional way:


Less amount of sodium chloride or sodium sulphate.

Least volume of requirement of water and chemicals.

Maximum fixation of dye-stuff.

Excellent levelling property.

Lower TDS, TSS,COD and BOD.

Eco –friendly and human friendly.

Excellent colour fastness to washing and colour fastness to rubbing.

Less consumption of energy, time and man power. .

Cost effective.

The difference of the amount of use of water and TDS between the conventional and modified methods as follows,

No The existing method of dyeing TDS water ratio 1:6 in Litre The novel method of dyeing TDS Water ratio 1:4 in Litre
1 Scouring 6000 ppm 6 Scouring 4500 ppm 4
2 Hot wash 4 Hot wash 2
3 Neutralization 4 Neutralization 2
4 Dyeing Shade above 4 % 102000 ppm 4 Dyeing Shade above 4 % 30000 ppm 2
5 Wash 4 Wash 2
6 Wash 4 Wash 2
7 Neutralization 4 Neutralization 2
8 Soap 4 Soap 2
9 Hot wash 4 Hot wash 2
10 Hot wash 4 Hot wash 2
11 Cold wash 4 Cold wash 2
12 Final Neutralization and fixing softener 4 Hydro dryer 2
13 Hydro dryer 1.5 Hydro dryer 1.5
Total 108000 ppm 51.5 Total 34500 ppm 27.5
AVG 12588 ppm AVG TDS 5021 ppm

Water TDS analysis is not included

TDS analysis of used dyes and chemicals is given
Water analysis is taken only in yarn dyeing unit
Usually a cotton fabric absorbs water at the ratio 1:2 at the end of the pre-treatment.


No Content Existing method of dyeing wanted Novel method of dyeing wanted
1 Water 51.5 Litre 27.5 Litre
2 Total Dissolved Solid 12588PPM 5021 PPM
3 One kg DYED yarn produces the TDS Water 51.5 LT *12588 ppm 648242PPM Water 27.5 LT *5021 PPM 138077 PPM


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