Open AccessEvaluation of the application of water kefir grains in the decolouration of solutions containg textile dye
Author(s) -
Ingrid Lorena Pereira Xavier,
Mayara Alcides,
Nathália Soares Barbosa,
Marcela Pavan Bagagli
Publication year - 2022
Publication title -
revista brasileira de engenharia de biossistemas
Language(s) - English
Resource type - Journals
eISSN - 2359-6724
pISSN - 1981-7061
DOI - 10.18011/bioeng.2022.v16.1083
Subject(s) - adsorption , wastewater , chemistry , biodegradation , textile , pulp and paper industry , effluent , context (archaeology) , chemical engineering , textile industry , matrix (chemical analysis) , nuclear chemistry , materials science , organic chemistry , waste management , chromatography , composite material , history , paleontology , archaeology , engineering , biology
One of the main environmental problems presented by the textile industry is the generation of effluents containing synthetic dyes. Because of that, studies have been carried out in order to remove or degrade the dyes present in wastewater and thus, the adsorption process in polymeric matrices has been highlighted due to its low cost and high efficiency in bioremediation. In this context, it was verified the potential of biodegradation of the anthraquinone C. I. Reactive Blue 4 HFG textile dye (Dianativo®) by water kefir grains, as well as the application of the insoluble exopolysaccharide produced by the grains as an adsorbent of the dye, evaluating the effect of pH and initial concentration of dyes in the reduction of staining in a model system. The grains and their insoluble polysaccharide matrix were presented as capable of decolourizing dye solutions under the evaluated conditions, reducing the dye concentration in the solution by up to 92%.