Bleaching
Bleaching is chemical treatment employed for the removal of natural coloring
matter from the substrate. Also absorbency is increased because sodium
hydroxide is used to increase the pH value and which remove oil, fat wax etc.
In this article I will calculate amount of water and chemical used in cotton
bleaching.
Calculation:
Sample weight = 9.64 gm
Total liquor x Recipe amount (gm/L)
Chemical = .....................................................
1000 x Stock Solution %
Total liquor = 9.64 x 10 = 96.4 ml
96.4 x 9
H2O2 = .................... = 8.676 ml
1000 x 10 %
96.4 x 4.5
Stabilizer = ................... = 4.338 ml
1000 x 10 %
96.4 x 8
NaoH =............................. = 7.712 ml
1000 x 10 %
96.4 x 5
Na2CO3 = .................... = 4.82 ml
1000 x 10 %
96.4 x 1
Detergent = .................... = 0.964 ≈ 1 ml
1000 x 10 %
96.4 x 1
Sequestering agent = ..................... = 00.964 ≈ 1 ml
1000 x 10 %
96.4 x 1
Wetting agent =........................ = 0.964 ≈ 1 ml
1000 x 10 %
96.4 x 1
Anti creasing = ....................... = 0.964 ≈ 1 ml
1000 x 10 %
Water =96.4- (8.676+4.338+7.112+4.82+1+1+1+1) = 67.454 ≈ 68 ml
Sample weight = 9.64 gm
Total liquor x Recipe amount (gm/L)
Chemical = .....................................................
1000 x Stock Solution %
Total liquor = 9.64 x 10 = 96.4 ml
96.4 x 9
H2O2 = .................... = 8.676 ml
1000 x 10 %
96.4 x 4.5
Stabilizer = ................... = 4.338 ml
1000 x 10 %
96.4 x 8
NaoH =............................. = 7.712 ml
1000 x 10 %
96.4 x 5
Na2CO3 = .................... = 4.82 ml
1000 x 10 %
96.4 x 1
Detergent = .................... = 0.964 ≈ 1 ml
1000 x 10 %
96.4 x 1
Sequestering agent = ..................... = 00.964 ≈ 1 ml
1000 x 10 %
96.4 x 1
Wetting agent =........................ = 0.964 ≈ 1 ml
1000 x 10 %
96.4 x 1
Anti creasing = ....................... = 0.964 ≈ 1 ml
1000 x 10 %
Water =96.4- (8.676+4.338+7.112+4.82+1+1+1+1) = 67.454 ≈ 68 ml
