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Method for generating methane from a carbonaceous feedstock

Patent ·
OSTI ID:1457740

The present invention provides a method for generating methane from a carbonaceous feedstock with simultaneous in situ sequestration of carbon dioxide to afford a biogas comprising at least 85 percent by volume methane, the method comprising anaerobically incubating a particulate additive in contact with a carbonaceous feedstock in a neutral or alkaline aqueous culture medium containing a culture of methanogenic consortia and collecting methane generated therefrom. The additive comprises at least one material selected from a biochar, an ash produced by gasification or combustion of a carbonaceous material, a black carbon soil, and a Terra Preta soil.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-06CH11357
Assignee:
UChicago Argonne, LLC (Chicago, IL)
Patent Number(s):
9,994,870
Application Number:
14/540,393
OSTI ID:
1457740
Country of Publication:
United States
Language:
English

References (6)

Biochar enables anaerobic digestion of aqueous phase from intermediate pyrolysis of biomass journal November 2014
Use of biochars in anaerobic digestion journal July 2014
The forms of alkalis in the biochar produced from crop residues at different temperatures journal February 2011
Aqueous reaction of fly ash and calcium hydroxide to produce calcium silicate absorbent for flue gas desulfurization journal November 1988
Characterization of Slow Pyrolysis Biochars: Effects of Feedstocks and Pyrolysis Temperature on Biochar Properties journal January 2012
Ash Management Review—Applications of Biomass Bottom Ash journal October 2012