Maximised anaerobic digestion with partial oxidation of digestate organics

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K14059
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Civil and environmental engineering
• Research Institution: The University of Kitakyushu
• Principal Investigator: Yasui Hidenari 北九州市立大学, 国際環境工学部, 教授 (70515329)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: メタン発酵プロセス / 部分酸化 / フェントン処理 / 活性汚泥モデル / シミュレーション

Outline of Final Research Achievements

A partial oxidation of digestate using Fenton reaction was evaluated to maximise methane conversion efficiency of the anaerobic digestion process. The lab-scale continuous experiment for over 6 months demonstrated that the unbiodegradable COD fraction of the digestate could be converted biodegradable ones by about 31%, resulting in corresponding methane production from the system.
Based on the experimental datasets and modifying IWA activated sludge models and anaerobic digestion model, a mathematical model to simulate the methane production, sludge concentration in the reactor and production of soluble inert which was the byproduct of the partial oxidation was developed.

Free Research Field

環境保全工学