Re ECF Project: 2014-75

Project Title: Enhanced Methane Production and Biogas Upgrading During Food Waste Anaerobic Digestion

Applicant: Prof. Jonathan Woon-chung WONG, Hong Kong Baptist University

Total Approved Grant: $930,400

Duration: 01/11/2015 to 31/7/2017

Project Status/Remarks: On-going

Scope:
The Government plans to divert food wastes to biological treatment at Organic Waste Treatment Facilities (OWTFs) with anaerobic digestion (AD) as the core technology. The biogas produced from the food waste AD reactors mainly contains methane and carbon dioxide (CO 2 ), and the CO 2 content reduces the heating value of the biogas. Therefore, the biogas must be upgraded. This project aims to develop a biological upgrading method for biogas, with a view to increasing its calorific value. The proposed approach could increase the methane content in the biogas to >95% and also increase the net methane production in a sustainable way. It also converts CO 2 in the biogas into methane, thus reducing global warming.

Summary of the Findings/Outcomes:
To be available upon completion of the project