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TitleRecycling of textile bleaching effluents for dyeing using immobilized catalase
Author(s)Costa, Silgia
Tzanov, Tzanko
Carneiro, Ana Filipa Gonçalves da Costa
Gübitz, Georg M.
Paulo, Artur Cavaco
Keywordscatalase immobilization
enzyme stabilization
textile dyeing
H O 2 2
Issue dateFeb-2002
JournalBiotechnology letters
Citation"Biotechnology letters". ISSN 0141-5492. 24:3 (Febr.2002) 173–176.
Abstract(s)Catalase was immobilized on alumina carrier and crosslinked with glutaraldehyde. Storing stability, temperature and pH profiles of enzyme activity were studied in a column reactor with recirculation and in a batch stirred-tank reactor. The immobilized enzyme retained 44% of its activity at pH 11, 30 °C and 90% at 80 °C, pH 7. The half-life time of the immobilized catalase was increased to 2 h at pH 12, and 60 °C. Acceptable results were achieved when the residual water from the washing process of H2O2-bleached fabrics was treated with the immobilized enzyme and then reused for dyeing.
AccessOpen access
Appears in Collections:DET/2C2T - Artigos em revistas internacionais com arbitragem científica

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