Recebido em 15/6/07; aceito em 11/1/08; publicado na web em 13/8/08 REUSE OF A EFFLUENT FROM THE DYEING OF ACRYLIC FABRICS AFTER PHOTOELECTROCHEMICAL TREATMENT. On a laboratory scale effluents were produced from bichromic dyeing of acrylic fabrics with the basic dyes Blue Astrazon FGGL 300% and Yellow Gold Astrazon GL 200%. The residual dyeing baths were subjected to a photoelectrochemical treatment and reused in a second dyeing process. In the reutilization study, dyeings with treated effluent

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... were compared with standard dyeings with distilled water. The results of dyeings using 100% of treated effluent were unsatisfactory, but the substitution of 10 to 30% of the treated effluent by distilled water resulted in reduced and more acceptable values for difference in colour intensity ( E) between 1.86 and 0.3.