Effect of the electric supply interruption on a microbial electrosynthesis system converting inorganic carbon into acetate

Autor(es)

Anzola Rojas, Melida del Pilar ^{[1, 2]} ; Zaiat, Marcelo ^[3] ; Gonzalez, Ernesto Rafael ^[2] ; De Wever, Heleen ^[1] ; Pant, Deepak ^[1]

Afiliação do(s) autor(es)

^[1] Flemish Inst Technol Res VITO, Separat & Convers Technol, Boeretang 200, B-2400 Mol - Belgium

^[2] Univ Sao Paulo, Sao Carlos Inst Chem, Sao Paulo - Brazil

^[3] Univ Sao Paulo, Lab Biol Proc, Ctr Res Dev & Innovat Environm Engn, Sao Carlos Sch Engn, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Bioresource Technology; v. 266, p. 203-210, OCT 2018.
• Citações Web of Science: 19

Resumo

Microbial electrosynthesis (MES) technology relies on the direct use of electrons to convert CO2 into long chain organic chemicals. Therefore, MES has been proposed to be coupled to the renewable electricity supply, mainly from solar and wind sources. However, those energies suffer fluctuations and interruptions of variable duration, which can have an adverse effect on MES performance. Such effects on MES has been evaluated for the first time under different interruptions time. H-cell-MES reactors were disconnected from power supply during 4, 6, 8, 16, 32 and 64 h. Interruptions affected the acetate production rate, causing a decrease of until 77% after 64 h off. However, after all the interruptions, the acetate production was restored, taking between 7 and 16 h for the reduction current to turn steady. Therefore, microbial community on MES proved to be resilient and able to recover the electro-autotrophic activity despite the duration of current supply interruptions. (AU)

• Processo FAPESP: 16/14377-7 - Célula de eletrólise microbiana: montagem, operação e avaliação do desempenho
• Beneficiário: Melida Del Pilar Anzola Rojas
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado