Dr Mrinal Choudhari - Academia.edu (original) (raw)
Uploads
Papers by Dr Mrinal Choudhari
Textile Dyeing, 2011
2. Water consumption in textile industry Amount of water consumed depends to a large extent (refe... more 2. Water consumption in textile industry Amount of water consumed depends to a large extent (refer Table A 3), on machine design and complexity of process (refer Table B, C 3). Different machines have their own www.intechopen.com Textile Dyeing 222 characteristic features that set lower limits to the amount of water required e.g. machines such as winch or hank dyeing machine work at material to liquor ratio of at least 1:10-15 while jigger works at 1:3. Many detailed surveys reveal remarkably wide variations in quantities of water used, i.e. from 5-5000 lit/kg of fabric processed. Average consumption in the scouring and bleaching of cotton fabrics was found to be in the range of 10-80 lit/kg and 10-130 lit/kg respectively depending on the machine and process employed. In case of dyeing carried out in jigger, the consumption of water is 10-60 lit/kg, while that carried out in a winch, it is around 100-450 lit/kg. In another survey carried out at wool processing mills the average consumption of water for various unit processes showed marked variation and the average consumption appeared to be higher than necessary for efficient scouring, milling and dyeing. In case of consumption of water by various types of washing machine, some information has been published. The cost determining factors in this case are water hardness, level control, spray devices, water pressure and washing temperature. Purpose Percent water Use Cotton textile Synthetic textile Steam generation 5.3 8.2 Cooling water 6.4-Demineralized or RO water for specific purpose 7.8 30.2 Process water 72.3 28.3 Bleaching Process CSP readings RKM readings Grieg RFD Full white Grieg RFD Full white Current Std.
Cotton is the leading fibre in Textile Industry. Cotton is still the "King" of fibers b... more Cotton is the leading fibre in Textile Industry. Cotton is still the "King" of fibers because most of the world's apparel is made of Cotton. Apart from its fairly good strength, it is considered to provide comfort due to good moisture absorption and wicking properties1. It is estimated that approx. 20 million tons of Cotton is processed worldwide yearly. Unlike man made cellulosic fibers such as Rayon and Lyocell, Cotton must be properly prepared for Dyeing, printing and finishing.
Textile Dyeing, 2011
2. Water consumption in textile industry Amount of water consumed depends to a large extent (refe... more 2. Water consumption in textile industry Amount of water consumed depends to a large extent (refer Table A 3), on machine design and complexity of process (refer Table B, C 3). Different machines have their own www.intechopen.com Textile Dyeing 222 characteristic features that set lower limits to the amount of water required e.g. machines such as winch or hank dyeing machine work at material to liquor ratio of at least 1:10-15 while jigger works at 1:3. Many detailed surveys reveal remarkably wide variations in quantities of water used, i.e. from 5-5000 lit/kg of fabric processed. Average consumption in the scouring and bleaching of cotton fabrics was found to be in the range of 10-80 lit/kg and 10-130 lit/kg respectively depending on the machine and process employed. In case of dyeing carried out in jigger, the consumption of water is 10-60 lit/kg, while that carried out in a winch, it is around 100-450 lit/kg. In another survey carried out at wool processing mills the average consumption of water for various unit processes showed marked variation and the average consumption appeared to be higher than necessary for efficient scouring, milling and dyeing. In case of consumption of water by various types of washing machine, some information has been published. The cost determining factors in this case are water hardness, level control, spray devices, water pressure and washing temperature. Purpose Percent water Use Cotton textile Synthetic textile Steam generation 5.3 8.2 Cooling water 6.4-Demineralized or RO water for specific purpose 7.8 30.2 Process water 72.3 28.3 Bleaching Process CSP readings RKM readings Grieg RFD Full white Grieg RFD Full white Current Std.
Cotton is the leading fibre in Textile Industry. Cotton is still the "King" of fibers b... more Cotton is the leading fibre in Textile Industry. Cotton is still the "King" of fibers because most of the world's apparel is made of Cotton. Apart from its fairly good strength, it is considered to provide comfort due to good moisture absorption and wicking properties1. It is estimated that approx. 20 million tons of Cotton is processed worldwide yearly. Unlike man made cellulosic fibers such as Rayon and Lyocell, Cotton must be properly prepared for Dyeing, printing and finishing.