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 and Hongbin Liu
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Na Duan: College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
Xia Ran: College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
Ruirui Li: College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
Panagiotis G. Kougias: Department of Environmental Engineering, Technical University of Denmark, Kgs. DK-2800 Lyngby, Denmark
Yuanhui Zhang: College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
Cong Lin: College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
Hongbin Liu: Key Laboratory of Nonpoint Source Pollution Control, Ministry of Agriculture, Beijing 100081, China

Energies, 2018, vol. 11, issue 7, 1-11

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.

Keywords: anaerobic digestion; chicken manure; biogas; algal digestate; mass flow (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (8)

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