1
Paul B Tarman, David P Chynoweth: Hybrid bio-thermal gasification. Institute of Gas Technology, Thomas W Speckman, September 15, 1981: US04289625 (60 worldwide citation)

A hybrid bio-thermal gasification process for improved carbonaceous gasification wherein a biological feed is anaerobically digested with product methane and carbon dioxide containing gas withdrawn from the digester and biological residue separately withdrawn from the digester and introduced into a ...


2
David P Chynoweth, Vipul J Srivastava, Richard Biljetina, Thomas D Hayes: Solids concentrating anaerobic digestion process and apparatus. Gas Research Institute, Thomas W Speckman, Ann W Speckman, April 5, 1988: US04735724 (40 worldwide citation)

A non-mixed vertical tower anaerobic digester and anaerobic digestion process provides passive concentration of biodegradable feed solids and microorganisms in an upper portion of a continuous digester volume and effluent withdrawal from the middle to bottom portion of the digester, resulting in inc ...


3
David P Chynoweth: In situ biological beneficiation of peat in the production of hydrocarbon fuels. Institute of Gas Technology, Thomas W Speckman, November 9, 1982: US04358537 (29 worldwide citation)

This invention relates to a process for in situ biological beneficiation of peat and hydraulic harvesting of organic carbonaceous material from a peat deposit. The process is particularly suitable for production of hydrocarbon fuel from peat wherein peat is contact in situ in a peat deposit with an ...


4
Sambhunath Ghosh, David P Chynoweth, Paul B Tarman: Two phase anaerobic digestion. Institute of Gas Technology, Thomas W Speckman, September 29, 1987: US04696746 (28 worldwide citation)

A two phase anaerobic digestion process for production of methane from organic carbonaceous material in which an active acid forming microbial population is maintained in a first acid forming digestion phase and an active methane forming microbial population is maintained in a second methane forming ...


5
David P Chynoweth, Robert LeGrand: Apparatus and method for sequential batch anaerobic composting of high-solids organic feedstocks. University of Florida, Kerkam Stowell Kondracki & Clarke, December 14, 1993: US05269634 (25 worldwide citation)

Apparatus and method for performing sequential batch anaerobic composting on high solids content wastes are provided, wherein a plurality of longitudinally extending trenches in the ground are employed as waste-holding receptacles, each of the trenches being provided with a cover having a peripheral ...


6
David P Chynoweth: Mixed microbial fermentation of carbonaceous matter to road de-icer. Institute of Gas Technology, Thomas W Speckman, January 13, 1987: US04636467 (23 worldwide citation)

A process for production of mixed calcium-magnesium organic acid salts useful for de-icing obtained by anaerobic hydrolysis-fermentation of organic carbonaceous solids by a biologically active mixture of hydrolysis-fermentation anaerobes in which the growth of methanogenic bacteria is suppressed and ...


7
Kerby F Fannin, David P Chynoweth: Method and apparatus for controlling microbial growth on condensation coils. Beaman & Beaman, February 15, 1994: US05286447 (15 worldwide citation)

The disclosure pertains to a method and apparatus for controlling microbial growth in air handling systems employing heat exchanging coils, water pans, or the like, exposed to moisture and subject to microbial contamination. Condensation apparatus located within a chamber defined in an air handling ...


8
David P Chynoweth, Paul B Tarman: Hybrid bio-thermal liquefaction. Institute of Gas Technology, Thomas W Speckman, June 8, 1982: US04334026 (13 worldwide citation)

A hybrid bio-thermal liquefaction process for improved carbonaceous liquefaction to produce alcohol containing fuels wherein an organic carbonaceous feed is subjected to active fermentation producing alcohol containing liquid fuel product and fermentation residue, the fermentation residue being intr ...


9
David P Chynoweth, Arthur A Teixeira, John M Owens, Patrick J Haley: Flooded densified leachbed anaerobic digestion. University of Florida Research Foundation, Saliwanchik Lloyd & Saliwanchik, December 26, 2006: US07153428 (6 worldwide citation)

The present invention provides improved systems and processes for performing sequential batch anaerobic composting (SEBAC) on high solids content wastes. In particular, the present invention provides improved flooded SEBAC systems that function more efficiently (i.e., higher conversion kinetics) at ...


10
Pratap Pullammanappallil, Kerry Johanson, Ioannis Martinos Polematidis, John M Owens, David P Chynoweth: System for anaerobic digestion of solid and soluble organic wastes, by-products and residues. University of Florida Reearch Foundation, Saliwanchik Lloyd & Eisenchenk, February 24, 2015: US08962310

The subject invention provides advantageous systems and processes for anaerobic digestion of organic waste streams, particularly agricultural waste streams. According to this invention, a new process is provided in which a liquid fraction from an organic waste stream comprising soluble compounds is ...



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