Washington State University

Dvo. Inc.

Andgar Corporation

Craig Frear

Shulin Chen

Stephen W Dvorak

Quanbao Zhao

Bryan J VanLoo

Anping Jiang

Manuel Garcia-Perez

Zhiyou Wen

Tianxi Zhang

Zhanyou Chi

Nicholas Kennedy

Quan-Bao Zhao

Usama Zaher

Liang Yu

Yan Liu

Jingwei Ma

Wei Liao

Methods, systems, and apparatuses for anaerobic digestion of waste fibrous material and the recovery of nutrients are provided. Methods, systems, and apparatuses disclosed herein provide mechanisms to release dissolved gases from anaerobic digester effluent. Methods, systems and apparatuses disclosed herein can recover one or more nutrients from anaerobic digested effluent using a range of temperatures, aeration rates, aeration times, pH ranges, and settling times.

Nutrient recovery systems and methods

Systems and methods for integrating thermochemical processing of biomass and anaerobic digestion are provided. Light oxygenated organic compounds are produced as byproducts of thermochemical biomass processing e.g. by torrefaction and/or pyrolysis, and are converted to methane by anaerobic digestion. Thermochemical processing units may or may not be co-located with the anaerobic digestion units, with co-location providing benefits for e.g. rural agricultural enterprises.

Processing biomass using thermochemical processing and anaerobic digestion in combination

Low cost, efficient two-stage anaerobic digestion systems for the production of biogas (e.g. methane) are provided. During the first stage, biogas is produced in a first reactor by anaerobic microbes cultured in two phases: a high solids phase and a low solids phase. During the second stage, biogas is produced in a second reactor by a methanogen-rich anaerobic culture cultured in low solids medium. Removal of effluent comprising pH lowering reaction products assists in maintaining a suitable pH in the high solids phase. The transfer of effluent from the second reactor to the first reactor assists in maintaining a suitable pH in the high solids phase, in mixing of the high solids phase, and in reseeding the high solids phase with methanogens. Methane is produced in and recovered from both reactors.

Two-stage anaerobic digestion systems wherein one of the stages comprises a two-phase system

Methods, systems and apparatuses herein provide a unique and novel process to remove HS from biogas. Methods, systems and apparatuses herein provide a unique and novel process to remove HS from biogas with ease of operation and reduced operating and capital costs. Methods, systems and apparatuses herein provide a unique and novel process to remove HS over COfrom biogas.

Methods and apparatuses for removal of hydrogen sulfide and carbon dioxide from biogas

Filamentous fungi are grown in pellet form by culturing the filamentous fungi in liquid culture under one or more of the following conditions: 1) with addition of particulate substrates: 2) using spores which have been stored for a period of time prior to inoculation; and 3) using high spore inoculum concentrations.

Pelletization process to control filamentous fungi morphology for enhanced reactor rheology bioproduct formation

Systems and methods for the treatment of lipid-extracted algae biomass and recycling nutrients are provided. The lipid-extracted algae biomass is hydrolyzed prior to anaerobic digestion, and the products generated by anaerobic digestion are further processed to yield by-products that are of use either for external use or as process inputs to carry out specific steps within an integrated algal growth and anaerobic digestion process designed to minimize economic costs, required costly inputs while improving upon system capabilities.

Integration of anaerobic digestion in an algae-based biofuel system

A multiphase culturing process for high density heterotrophic microalgal growth uses crude glycerol as the primary carbon source and produces &#x3c9;-3 fatty acids. The process uses multiphase growth conditions that decouple the phases of increasing cell density and increasing cell size and fatty acid production. The entire process is integrated with biodiesel production.

Heterotrophic algal high cell density production method and system

An economical, integrated system works in series with anaerobic digestion of animal waste to recover nitrogen and phosphorous, while also scrubbing the produced biogas.

Growing community of inventors

Pullman, WA, United States of America

Craig Frear