Performance evaluation of mesophilic anaerobic digestion of chicken manure with algal digestate

Na Duan, Xia Ran, Ruirui Li, Panagiotis G. Kougias, Yuanhui Zhang, Cong Lin, Hongbin Liu

Research output: Contribution to journalArticlepeer-review

Abstract

Dilution is considered to be a fast and easily applicable pretreatment for anaerobic digestion (AD) of chicken manure (CM), however, dilution with fresh water is uneconomical because of the water consumption. The present investigation was targeted at evaluating the feasibility and process performance of AD of CM diluted with algal digestate water (AW) for methane production to replace tap water (TW). Moreover, the kinetics parameters and mass flow of the AD process were also comparatively analyzed. The highest methane production of diluted CM (104.39 mL/g volatile solid (VS)) was achieved with AWunder a substrate concentration of 8% total solid (TS). The result was markedly higher in comparison with the group with TW (79.54-93.82 mL/gVS). Apart from the methane production, considering its energy and resource saving, nearly 20% of TW replaced by AW, it was promising substitution to use AW for TW to dilute CM. However, the process was susceptible to substrate concentration, inoculum, as well as total ammonia and free ammonia concentration.

Original languageEnglish (US)
Article number1829
JournalEnergies
Volume11
Issue number7
DOIs
StatePublished - 2018

Keywords

  • Algal digestate
  • Anaerobic digestion
  • Biogas
  • Chicken manure
  • Mass flow

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Energy (miscellaneous)
  • Control and Optimization
  • Electrical and Electronic Engineering

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