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Modeling of anaerobic degradation of solid slaughterhouse waste: Inhibition effects of long-chain fatty acids or ammonia

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Pages (from-to)15-32
Number of pages18
JournalApplied Biochemistry and Biotechnology
Volume109
Issue number1-3
DOIs
Publication statusPublished - Apr 2003
Externally publishedYes
Publication typeA1 Journal article-refereed

Abstract

The anaerobic bioconversion of solid poultry slaughterhouse wastes was kinetically investigated. The modified version of <METHANE> simulation model was applied for description of experimental data in mesophilic laboratory digester and assays. Additionally, stages of formation and consumption of long chain fatty acids (LCFA) were included in the model. Batch data on volatile solids, ammonium, acetate, butyrate, propionate, LCFA concentrations, pH level, cumulative volume, and methane partial pressure were used for model calibration. As a reference, the model was used to describe digestion of solid sorted household waste. Simulation results showed that an inhibition of polymer hydrolysis by volatile fatty acids and acetogenesis by NH3 or LCFA could be responsible for the complex system dynamics during degradation of lipid- and protein-rich wastes.

Keywords

  • Ammonia, Anaerobic digestion, Inhibition, Long-chain fatty acids, Model, Poultry slaughterhouse waste, Sorted solid household waste