A viabilidade do crescimento da microalga Galdieria sulphuraria em efluente contendo glicerol e tanino

Abstract

This research aimed to investigate the growth efficiency of the microalgae Galdieria sulphuraria in industrial effluent containing glycerol and tannin, in order to propose a sustainable alternative for effluent treatment. Physicochemical analyses were performed to observe changes in the composition of the effluent produced in the biotissue treatment stage. The microalgae used in the research were obtained from the microalgae collection of the Bioprocesses Laboratory III of the Federal University Technology of Paraná, Ponta Grossa-PR campus. The microalgae were inoculated into the effluent, and the growth rate, absorbance values and consumption of glycerol and tannin were analyzed. In this study, 5,6% and 10% glycerol and 5,6% tannin were used for the viability of Galdieria sulphuraria growth, also analyzing the yield, generation time and maximum growth speed in the samples, demonstrating a higher maximum growth speed of 0,013 h-1 and generation time of 54,7 h in 5,6% glycerol and higher biomass yield in 5,6% tannin.