Biochars from Spirulina as an alternative material in the purification of lactic acid from a fermentation broth

Current Research in Green and Sustainable Chemistry

Luciana Fontes Coelho¹  E. Laura Moyano²  Mario Lanteri³  Daiane Cristina Sass³  Roxana Verónica Piloni⁴  Jonas Contiero⁴  Maria Aparecida Zaghete Bertochi⁵ 

[1] Corresponding author.;Department of Engineering, Physics and Mathematics, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil;Institute of Biosciences, São Paulo State University (UNESP), Rio Claro, São Paulo, Brazil;Organic Chemistry Department, Faculty of Chemical Sciences, INFIQC (CONICET-National University of Córdoba), Córdoba, Argentina;Villa María Research and Transfer Center (CIT-CONICET), Villa María, Córdoba, Argentina;

关键词: Fast pyrolysis;    Biochar;    Spirulina;    Lactic acid;    Fermentation;   

DOI  :  

来源: DOAJ

【 摘 要 】

In this study, Spirulina biochar obtained from fast pyrolysis was evaluated as an alternative to commercial activated carbon for lactic acid (LA) purification from a fermentation broth. Thermally (350 and 400 ​°C treatment of the biochar in N2 atmosphere for 4 ​h) and chemically (KOH solution impregnation of the algal material and fast pyrolysis to obtain the biochar) activated Spirulina biochars were also tested. The biochars were previously characterized using SEM and FT-IR. Two purification methodologies were evaluated: filtration and stirring. The stirring method prove to be simpler, faster and chipper, with excellent purification results. All the evaluated biochars presented a performance comparable to that of activated carbon in the stirring methodology. Spirulina biochar and the KOH activated biochar were the once with the best results, with 92 and 82% LA recovery and 82 and 90% protein removal efficiencies, respectively.

【 授权许可】

Unknown