Removal of solids and chemical oxygen demand in poultry litter anaerobic digestion with different inocula

  • Joseane Bortolini Programa de Pós-Graduação em Engenharia Agrícola. Universidade Estadual do Oeste do Paraná (UNIOESTE), Rua Universitária, n° 2069, CEP: 85819-110, Cascavel, PR, Brazil
  • Maria Hermínia Ferreira Tavares Centro de Ciências Exatas e Tecnológicas. Universidade Estadual do Oeste do Paraná (UNIOESTE), Rua Universitária, n° 2069, CEP: 85814-110, Cascavel, PR, Brazil.
  • Dayane Taine Freitag Departamento de Engenharia Agrícola. Universidade Estadual do Oeste do Paraná (UNIOESTE), Rua Universitária, n° 2069, CEP: 85814-110, Cascavel, PR, Brazil.
  • Osvaldo Kuczman Centro de Ciências Exatas e Tecnológicas. Universidade Estadual do Oeste do Paraná (UNIOESTE), Rua Universitária, n° 2069, CEP: 85814-110, Cascavel, PR, Brazil.
DOI: https://doi.org/10.4136/ambi-agua.2469
Keywords: biodegradability, bovine inoculum, poultry waste, swine inoculum

Abstract

 

Population growth has contributed to increasing poultry production, entailing a high waste loading, mainly poultry litter. One of the alternatives to treat such residues is anaerobic digestion, in which digester startup and generated-digestate quality are related to the material to be digested and to operation conditions, wherein inoculum use is one of the factors. This study therefore aimed to investigate how digestates, such as inocula, influence poultry litter (PL) anaerobic digestion, as well the reduction of solids and chemical oxygen demand (COD). For this, two inocula (bovine and swine digestates) were tested in the digestion process. The inocula were added at loads of 0.67, 1.00 and 1.67 gVS.L-1day-1. A split-plot design was developed and data underwent analysis of variance with means compared by the Tukey's test at 5% significance. Concerning bovine and swine inocula, it was concluded that both are indicated in the process. However, swine inoculum is better indicated because it had a better removal of total solids (TS), volatile solids (VS) and COD.


Author Biographies

Joseane Bortolini, Programa de Pós-Graduação em Engenharia Agrícola. Universidade Estadual do Oeste do Paraná (UNIOESTE), Rua Universitária, n° 2069, CEP: 85819-110, Cascavel, PR, Brazil
   
Maria Hermínia Ferreira Tavares, Centro de Ciências Exatas e Tecnológicas. Universidade Estadual do Oeste do Paraná (UNIOESTE), Rua Universitária, n° 2069, CEP: 85814-110, Cascavel, PR, Brazil.
  
Dayane Taine Freitag, Departamento de Engenharia Agrícola. Universidade Estadual do Oeste do Paraná (UNIOESTE), Rua Universitária, n° 2069, CEP: 85814-110, Cascavel, PR, Brazil.
  
Osvaldo Kuczman, Centro de Ciências Exatas e Tecnológicas. Universidade Estadual do Oeste do Paraná (UNIOESTE), Rua Universitária, n° 2069, CEP: 85814-110, Cascavel, PR, Brazil.
  
Published
26/03/2020
Issue
Vol. 15 No. 2 (2020)
Section
Papers

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