Electrochemical mercerization, souring, and bleaching of textile

Details Electrochemical mercerization, souring, and bleaching of textile Electrochemical mercerization, souring, and bleaching of textile

1995-02-06

1995-10-10

Niebling, John

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204133, 204 84, 204254, 204255, 204257, 204263, 8930, 8931, D06M 1100, C25B 130

Patent

active

054568099

ABSTRACT:
Economical, pollution-free treatment of textiles occurs in a low voltage electrochemical cell that mercerizes (or scours), sours, and optionally bleaches without effluents and without the purchase of bulk caustic, neutralizing acids, or bleaches. The cell produces base in the cathodic chamber for mercerization and an equivalent amount of acid in the anodic chamber for neutralizing the fabric. Gas diffusion electrodes are used for one or both electrodes and may simultaneously generate hydrogen peroxide for bleaching. The preferred configuration is a stack of bipolar electrodes, in which one or both of the anode and cathode are gas diffusion electrodes, and where no hydrogen gas is evolved at the cathode.

REFERENCES:
patent: 4319973 (1992-03-01), Porta et al.

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