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Anaerobic Biodegradation of Biodiesel Industry Wastewater in Mesophilic and Thermophilic Fluidized Bed Reactors: Enhancing Treatment and Methane Recovery.
da Costa, Talles Barcelos; Simões, Andreza Nataline; de Menezes, Camila Aparecida; Silva, Edson Luiz.
Afiliação
  • da Costa TB; Department of Chemical Engineering, Federal University of São Carlos, Rod. Washington Luis, km 235, CEP, São Carlos, SP, 13565-905, Brazil.
  • Simões AN; Department of Hydraulics and Sanitation, School of Engineering of São Carlos, University of São Paulo, Av. João Dagnone, 1100 - Jd. Santa Angelina, CEP, São Carlos, SP, 13563-120, Brazil.
  • de Menezes CA; Department of Hydraulics and Sanitation, School of Engineering of São Carlos, University of São Paulo, Av. João Dagnone, 1100 - Jd. Santa Angelina, CEP, São Carlos, SP, 13563-120, Brazil.
  • Silva EL; Department of Chemical Engineering, Federal University of São Carlos, Rod. Washington Luis, km 235, CEP, São Carlos, SP, 13565-905, Brazil. edsilva@ufscar.br.
Appl Biochem Biotechnol ; 193(10): 3336-3350, 2021 Oct.
Article em En | MEDLINE | ID: mdl-34185261
In the past few years, the extraction of value-added compounds from the anaerobic digestion of glycerol has been an option to add value to this waste because biodiesel production is increasing worldwide. The evolution of research on glycerol valorization by anaerobic digestion has reached the use of high-rate reactors. However, no study has evaluated glycerol digestion in an anaerobic fluidized bed reactor (AFBR), a configuration with potential advantages in methane production. Still, the best operating temperature for high-rate glycerol digestion remains unclear. To clarify these gaps, the present study aimed to compare glycerol digestion in mesophilic AFBR (30 °C) and thermophilic AFBR (55 °C). In both reactors, glycerol concentration was increased from 1.0 to 7.0 g L-1 at a fixed hydraulic retention time of 24 h, resulting in an increase at the organic loading rate from 1.2 to 7.6 kg COD m-3 day-1. Thermophilic digestion of glycerol achieved superior removals of organic matter (67.7-94.2%) and methane yield (330.8 mL CH4 g-1 COD) than the mesophilic digestion (48.6-93.0% and 266.6 mL CH4 g-1 COD). Additionally, the application of the kinetic model of substrate utilization (modified Stover-Kincannon model) indicated a higher substrate utilization coefficient in the thermophilic AFBR (23.09 g L-1 day-1) than the mesophilic AFBR (7.14 g L-1 day-1). Therefore, the application of glycerol concentrations higher than 7.0 g L-1 in thermophilic AFBR should be further investigated. Also, given only operational results, the application of the AFBR in the two-stage anaerobic digestion of glycerol is recommended.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Metano Idioma: En Revista: Appl Biochem Biotechnol Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Metano Idioma: En Revista: Appl Biochem Biotechnol Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos