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Energies 2018, 11(7), 1829; https://doi.org/10.3390/en11071829

Performance Evaluation of Mesophilic Anaerobic Digestion of Chicken Manure with Algal Digestate

1
College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
2
Department of Environmental Engineering, Technical University of Denmark, Kgs. DK-2800 Lyngby, Denmark
3
Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
4
Key Laboratory of Nonpoint Source Pollution Control, Ministry of Agriculture, Beijing 100081, China
*
Authors to whom correspondence should be addressed.
Received: 4 June 2018 / Revised: 26 June 2018 / Accepted: 27 June 2018 / Published: 12 July 2018
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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 AW under 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. View Full-Text
Keywords: anaerobic digestion; chicken manure; biogas; algal digestate; mass flow anaerobic digestion; chicken manure; biogas; algal digestate; mass flow
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Duan, N.; Ran, X.; Li, R.; Kougias, P.G.; Zhang, Y.; Lin, C.; Liu, H. Performance Evaluation of Mesophilic Anaerobic Digestion of Chicken Manure with Algal Digestate. Energies 2018, 11, 1829.

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