A bio-electrochemical system for removing inhibitors of anaerobic digestion processes from anaerobic reactors

Irini Angelidaki (Inventor), Yifeng Zhang (Inventor)

Research output: Patent

Abstract

Inhibition of anaerobic digestion process by high level of ammonia (NH4 +/I\IH3) is the most serious problem existing in biogas plants. No viable/applicable method to overcome this problem has been found up to now. This invention proposes an innovative submersible bio-electrochemical membrane reactor to recover ammonia from anaerobic digestion reactor, and thereby alleviate or counteract ammonia inhibition and enhance the conversion of ammonia-rich wastes to biogas. The invention may further reduce overall cost, giving synergistic advantages for both ammonia recycling and biogas plants by recovering acid (e.g., H2SO4, HCI), that can be used to treat the recovered ammonia.
Original languageEnglish
IPCC12M1/00
Patent numberWO2014146671
Filing date25/09/2014
Country/TerritoryInternational Bureau of the World Intellectual Property Organization (WIPO)
Priority date22/03/2013
Priority numberEP20130160580
Publication statusPublished - 2014

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