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Frederick T Varani: Method and apparatus for the anaerobic digestion of decomposable organic materials. Bio Gas of Colorado, Edwin L Spangler Jr, January 20, 1976: US03933628 (48 worldwide citation)

This invention relates to an improved anaerobic digestion apparatus for decomposable organic materials characterized by a digestor covered and sealed by a liquid-filled pond heated with solar energy. The effluent from the fermentation reaction taking place in the digestor has excellent absorptivity ...


2
Frederick T Varani: Method and apparatus for processing animal waste. Bio Gas of Colorado, Edwin L Spangler Jr, June 17, 1980: US04208279 (24 worldwide citation)

This invention relates to an improved apparatus for both processing and removing animal waste products from a pit continually supplied therewith which comprises a ramp-like lid partially covering the pit and cooperating with the contents thereof to seal the latter from the atmosphere except where th ...


3
Frederick T Varani: Method and apparatus for treating a continuous flow of fluid waste products and other materials. Adrian Const Co, Jacox & Meckstroth, March 30, 1976: US03946679 (9 worldwide citation)

Moisture is removed from a fluid waste product or material by pumping the material axially through an elongated porous tube, forcing a gas generally radially inwardly through the tube to effect disintegration of the material, and then directing the material through a perforated duct which receives h ...


4
Frederick T Varani, Paul B Trost: Oil-gas vapor collection, storage, and recovery system using a variable volume gas bag connected with a control switch. June 26, 2012: US08206124 (2 worldwide citation)

An oil-gas vapor collection, storage, and recovery system ensures that no air or oxygen leakage into the production tank occurs when gauging and/or emptying a tank. The system provides a constant reservoir-type storage system by utilizing a variable volume gas bag, expanding with a surge of gas from ...


5
Frederick T Varani, Paul Bertram Trost: Fugitive gas capture. HolzerIPLaw PC, April 29, 2014: US08708663 (1 worldwide citation)

A fugitive gas capture system includes a variable volume gas storage assembly (e.g., a bag) that expands and deflates between a first position and a second position, respectively, where the positions influence control of a switch coupled to a throttle on a gas engine that powers a compressor or coup ...


6
John Jenkins, Frederick T Varani, Thomas A Jones, Paul Bertram Trost, Aaron F Primmer, Nathan A Emsick: Dry chemical scrubber with pH adjustment. MTARRI VARANI EMISSIONS TREATMENT, Holzer Patel Drennan, April 25, 2017: US09630144

Implementations disclosed herein provide a dry chemical scrubber with a pH regulator that adjusts an internal pH value of the dry chemical scrubber by adding high pH elements to the contents of the dry chemical scrubber on a continuous or periodic basis.


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