Converting Spent Mushroom Substrate and Chicken Droppings into Methane by Anaerobic Co-Digestion

Project Details


The massive amounts of agricultural wastes generated globally have caused serious environmental problems,which triggers research interests in developing proper technologies to convert these wastes. Anaerobicdigestion is a widely used technology with dual benefits for treating different types of organic wastes andgenerating biogas. However, application of this technology is greatly affected by the specific characteristicsof wastes. For example, high contents of cellulosic compounds and high C/N ratio of agricultural wastes havelimited its use in biogas production by anaerobic digestion. In other words, highly degradable feedstock canlead to rapid accumulation of VFAs in the digesters due to slow methanogenesis process causing the furtherinhibition of methanogenesis. However, this issue can be solved by anaerobic co-digestion by combiningagricultural wastes with livestock manures. Agricultural wastes and livestock manures have been co-digestedto balance the nutritional content and C/N ratios, to improve buffer capacity, and to dilute inhibitors. Thus,converting spent mushroom substrate (SMS) with chicken droppings by anaerobic co-digestion is proposedby this project for biogas production. Our laboratory has research experience to convert agricultural wasterice straw into biofuels. In this study, we will focus on several parameters such as pretreatment of SMS, theratio of chicken droppings and SMS, volatile fatty acids (VFA) production and methane production usinganaerobic co-digestion system. Comparative studies between solid state and liquid state anaerobicco-digestion will be investigated for optimum methane production.
Effective start/end date1/11/1731/10/18

UN Sustainable Development Goals

In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This project contributes towards the following SDG(s):

  • SDG 11 - Sustainable Cities and Communities
  • SDG 12 - Responsible Consumption and Production
  • SDG 17 - Partnerships for the Goals


  • Anaerobic co-digestion
  • methane
  • spent mushroom substrate
  • chicken droppings


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