Resumo

CABRERA ESTADA, Isabel; GONZALEZ LINARES, Maydelis  e  CURBELO TAPANES, Isael. Modification of recipes used in the bleaching section of the finishing plant of the textile unit "Desembarco del Granma". cen. az. [online]. 2017, vol.44, n.3, pp.34-42. ISSN 0253-5777.

The Textile Basic Unit (BU) "Desembarco del Granma" of Villa Clara is one of the most important textile industries in Cuba, it is responsible for the provision of a wide variety of fabrics, threads and surgical gauze to various sectors of the country. In the finishing plant of the BU "Desembarco del Granma" a production that meets the parameters set is achieved, but this requires the use of large volumes of costly chemicals and with negative impacts on the environment. To solve this problem an investigation was carried out to evaluate the modification of some of the recipes used in the bleaching section of the finishing plant of the BU "Desembarco del Granma". The results obtained were processed with the Statgraphics software. When the caustic soda is decreased from 60g/L to 40g/L, and it is analyzed the capillarity of warp, it was confirmed that there is no significant difference between the average of the two samples, for a 95,0 % of confidence level; but there were differences between the variances; when analyzing the fabric capillarity it was found that there is no significant difference between the average and the variance of the two samples for a 95,0 % of confidence level. With such modification it is saved 241,4 $/day, by concept of decrease of soda used. The hydrogen peroxide cannot be reduced because it affects the white degree of the fabric.

Palavras-chave : Textile bleaching; sodium hydroxide; environmental impact.

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