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Title: Electrochemical mercerization, souring, and bleaching of textiles

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. 5 figs.
Inventors:
Issue Date:
OSTI Identifier:
119046
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 320305; 320303; PA: EDB-95:148623; SN: 95001477086
Patent Number(s):
US 5,456,809/A/
Application Number:
PAN: 8-384,082
Contract Number:
W-7405-ENG-48
Resource Relation:
Other Information: PBD: 10 Oct 1995
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; TEXTILE INDUSTRY; ELECTROCHEMICAL CELLS; DESIGN; OPERATION; LIQUID WASTES; MINIMIZATION; HAZARDOUS MATERIALS; TEXTILES

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