31
Masahiko Ishida, Ryoichi Haga, Yoji Odawara: Anaerobic digestion process. The Agency of Industrial Science and Technology, Birch Stewart Kolasch & Birch, October 19, 1982: US04354936 (32 worldwide citation)

Methane gas produced according to an anaerobic digestion of organic wastes is introduced into digested separated water which is alkalized by a photo-culture of algae, whereby impurity carbon dioxide gas is removed by absorption. Accordingly, methane of high concentration is recovered and at the same ...


32
Dennis A Burke: Anaerobic treatment process for the rapid hydrolysis and conversion of organic materials to soluble and gaseous components. Christensen O Connor Johnson & Kindness PLLC, September 23, 1997: US05670047 (31 worldwide citation)

An anaerobic digestion process capable of converting organic slurries to precipitates, as well as soluble and gaseous products through a series of reactors or process steps. The organic material is processed through three sequential steps consisting of two anaerobic digestion steps and an intermedia ...


33
Ken Stamper, Richard Skinner: Process for producing energy, feed material and fertilizer products from manure. Dunlap Codding & Rogers P C, February 18, 2003: US06521129 (31 worldwide citation)

A process for treating manure using anaerobic digestion includes introducing manure into a mixing vessel containing a digester liquid and agitating and filtering a slurry formed therefrom to remove substantially all water insoluble solids, thereby leaving a liquid containing ammonia and reactive org ...


34
James D McElvaney: Anaerobic digester system and method. Leighton K Chong, July 3, 2001: US06254775 (30 worldwide citation)

An anaerobic digester system has a vertically upright vessel, a matrix arranged in the vessel supporting a microorganism biomass thereon, an input for supplying an input slurry of liquid and suspended solids at an upper portion of the vessel above the matrix, a gas output at the top of the vessel fo ...


35
Ryoichi Haga, Masahiko Ishida, Yoji Odawara: Anaerobic digestion process of wastes containing cellulose. The Agency of Industrial Science and Technology, Birch Stewart Kolasch and Birch, April 9, 1985: US04510243 (30 worldwide citation)

The present invention relates to an anaerobic digestion process of wastes containing cellulose, in which, after liquefying by bringing wastes containing cellulose in slurry state into contact with facultative anaerobic bacteria with pH adjusted between 6.5-8.0 and oxidation-reduction potential contr ...


36
Harry Wiljan, Ulrich Niefnecker, Ottokarl Muck, Hans Kubler, Roland Schnell, Roland Carra, Matthias Wild: Processing waste materials for anaerobic digestion of the biogenic-organic constituents. REA Gesellschaft fur Recycling von Energie und Abfall mbH, Lowe Price LeBlanc & Becker, January 3, 1995: US05377917 (29 worldwide citation)

In a process of treating waste materials for an anaerobic digestion of the biogenic organic constituents of the garbage, particularly of the source separated organic waste, the wet waste, the residual waste and the commercial wastes, an easily dewaterable suspension of the biogenic organic substance ...


37
Jason C H Shih: Process and apparatus for anaerobic digestion. North Carolina State University, Bell Seltzer Park & Gibson, June 11, 1996: US05525229 (29 worldwide citation)

A process for the anaerobic digestion of organic carbonaceous material is disclosed. The process includes the steps of (a) hydrolyzing organic carbonaceous material to produce a digester stream including hydrolysis products; (b) subjecting the digester stream to a first methanation phase operating a ...


38
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 ...


39
Anthony J Priestley, Mark A Woods: Sewage treatment. Commonwealth Scientific and Industrial Research Organisation, Cushman Darby & Cushman, January 1, 1991: US04981593 (27 worldwide citation)

The sewage treatment process combines physico-chemical clarification using fine material or clay particles with anaerobic digestion of a concentrated sewage. The particles are preferably magnetite. The sewage (10) is mixed with magnetite (12) having a hydroxylated surface layer in tanks (14, 16, 18, ...


40
Donald L Klass, Sambhunath Ghosh: Methane production from and beneficiation of anaerobic digestion of aquatic plant material. United Gas Pipe Line Company, Thomas W Speckman, January 3, 1984: US04424064 (27 worldwide citation)

A process for improved methane production by anaerobic digestion of aquatic plant material at least a portion or all of which has been grown in organically polluted water. Mixtures of aquatic plant material one portion of which has been grown in non-polluted and a second portion comprising over abou ...



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