1
Birgir Norddahl: Method and plant for the treatment of liquid organic waste. Bioscan, Birch Stewart Kolasch & Birch, April 9, 2002: US06368849 (39 worldwide citation)

A method and plant for the treatment of an organic waste material in liquid form, e.g. liquid manure from livestock, the method comprising filtering fibres and particles from the liquid, subjecting the liquid to anaerobic fermentation in a biogas reactor, separating a substantially sterile and parti ...


2
Birgir Norddahl: Fermentative production and isolation of lactic acid. Lactascan ApS, Birch Stewart Kolasch & Birch, November 20, 2001: US06319382 (10 worldwide citation)

A method for fermentation of lactic acid from a sugar-containing fermentation liquid in a fermentor by means of lactic acid-forming bacteria, in which whey protein is present or is added as a nutrient substrate for the lactic acid-forming bacteria, wherein at least one protease is added to the ferme ...


3
Birgir Norddahl, Soren Eriksen, Frederik Moller Pedersen: Method for producing lactic acid. Harness Dickey & Pierce, February 19, 2004: US20040033573-A1

A method for producing lactic acid, comprising producing lactic acid from a sugar-containing fermentation liquid in a fermentor by means of lactic acid-forming bacteria to result in a lactate salt, typically ammonium, sodium or potassium lactate, and isolating lactic acid by subjecting the fermented ...



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