Brendan T. Higgins
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View article: Organic amendments to control odor during soil application of poultry byproducts under dynamic moisture conditions
Organic amendments to control odor during soil application of poultry byproducts under dynamic moisture conditions Open
Land application is a cost-effective valorization strategy for a variety of organic wastes including meat processing byproducts, such as poultry dissolved air flotation (DAF) solids. However, odor control is a major challenge for acceptanc…
View article: Chemical factors governing growth of nutraceutical Chlorella sorokiniana on thermal hydrolysate of poultry processing waste
Chemical factors governing growth of nutraceutical Chlorella sorokiniana on thermal hydrolysate of poultry processing waste Open
The growing poultry processing industry generates large quantities of meat byproducts and wastes. Many of these wastes are currently land applied because they contain high water content, leading to putrid odors that impact nearby communiti…
View article: Benzoic acid supplementation in crude protein-deficient diets reduces nursery pig growth performance
Benzoic acid supplementation in crude protein-deficient diets reduces nursery pig growth performance Open
The objective of this study was to evaluate the interaction between benzoic acid, which is excreted in urine as its Gly conjugate hippuric acid, and low crude protein (CP) diets on nursery pig growth performance. At 28 d age, pigs were wea…
View article: Thermal hydrolysis of poultry byproducts for the production of microbial media
Thermal hydrolysis of poultry byproducts for the production of microbial media Open
Rendered meat byproducts are important feedstocks for pet food formulas, esterified biodiesels and other bioproducts. However, feedstocks with high water contents are currently not attractive for rendering due to the need to evaporate the …
View article: Chemical Factors Governing Growth of Nutraceutical Chlorella Sorokiniana on Thermal Hydrolysate of Poultry Processing Waste
Chemical Factors Governing Growth of Nutraceutical Chlorella Sorokiniana on Thermal Hydrolysate of Poultry Processing Waste Open
View article: Chemical Factors Governing Growth of Nutraceutical Chlorella Sorokiniana on Thermal Hydrolysate of Poultry Processing Waste
Chemical Factors Governing Growth of Nutraceutical Chlorella Sorokiniana on Thermal Hydrolysate of Poultry Processing Waste Open
View article: Enhancing Yields: The Role of Fish Tank Illumination and Coupling/Decoupling in Biofloc Aquaponics Performance
Enhancing Yields: The Role of Fish Tank Illumination and Coupling/Decoupling in Biofloc Aquaponics Performance Open
View article: Elucidation of major protein upregulation in nutraceutical Chlorella sorokiniana when grown on rendered hydrolysate
Elucidation of major protein upregulation in nutraceutical Chlorella sorokiniana when grown on rendered hydrolysate Open
View article: Growth of heterotrophic microbial nutraceuticals on rendered hydrolysates and determination of accessible carbon substrates
Growth of heterotrophic microbial nutraceuticals on rendered hydrolysates and determination of accessible carbon substrates Open
View article: Board 201: Assessing change in research perceptions following participation in an REU site focused on converting biological wastes into products of value
Board 201: Assessing change in research perceptions following participation in an REU site focused on converting biological wastes into products of value Open
The overall goal of this project was to establish an NSF REU site that integrates undergraduate students in team-based research projects focused on converting biological wastes into products of value. This site has operated for two summers…
View article: Poultryponics: Cultivation of Hydroponic Lettuce Using Treated Poultry Processing Wastewater for Increased Nitrogen Neutrality
Poultryponics: Cultivation of Hydroponic Lettuce Using Treated Poultry Processing Wastewater for Increased Nitrogen Neutrality Open
View article: Dosing Salmonella into Poultryponics: Fate of Salmonella During Treatment of Poultry Processing Wastewater and Irrigation of Hydroponic Lettuce
Dosing Salmonella into Poultryponics: Fate of Salmonella During Treatment of Poultry Processing Wastewater and Irrigation of Hydroponic Lettuce Open
View article: Upcycling Nutrients from Poultry Slaughterhouse Wastewater Through Cultivation of the Nutritional Yeast, Yarrowia Lipolytica
Upcycling Nutrients from Poultry Slaughterhouse Wastewater Through Cultivation of the Nutritional Yeast, Yarrowia Lipolytica Open
View article: Long Term Outdoor Algae Production on Undiluted Anaerobic Digestate in the Southeastern US
Long Term Outdoor Algae Production on Undiluted Anaerobic Digestate in the Southeastern US Open
Highlights Local algae outdoor production on undiluted anaerobic digestate over 1-year. Dominating eukaryotes transitioned from Coelastrum to Chlorella in warmer season. Culture collapsed when pretreatment on digestate was purposefully sto…
View article: Supplemental figures for "Mass-Balance Process Model of a Decoupled Aquaponics System"
Supplemental figures for "Mass-Balance Process Model of a Decoupled Aquaponics System" Open
Figure S1 shows water and feed inputs to the aquaponics system over the course of one year. Figure S2 shows modeled rates of nitrogen gas evolution over time due to denitrification in the aquaponics system.
View article: Supplemental figures for "Mass-Balance Process Model of a Decoupled Aquaponics System"
Supplemental figures for "Mass-Balance Process Model of a Decoupled Aquaponics System" Open
Figure S1 shows water and feed inputs to the aquaponics system over the course of one year. Figure S2 shows modeled rates of nitrogen gas evolution over time due to denitrification in the aquaponics system.
View article: Microalgae Can Promote Nitrification in Poultry-Processing Wastewater in the Presence and Absence of Antimicrobial Agents
Microalgae Can Promote Nitrification in Poultry-Processing Wastewater in the Presence and Absence of Antimicrobial Agents Open
Wastewater from poultry-processing plants can be challenging to treat, partially because of the antimicrobial processing aides such as peracetic acid (PAA) and cetylpyridinium chloride (CPC) which suppress nitrifying bacteria. The objectiv…
View article: Influence of Red Mud Catalyst and Reaction Atmosphere on Hydrothermal Liquefaction of Algae
Influence of Red Mud Catalyst and Reaction Atmosphere on Hydrothermal Liquefaction of Algae Open
Algae are a diverse group of aquatic organisms and have a potential to produce renewable biofuel via hydrothermal liquefaction (HTL). This study investigated the effects of reaction environments on biocrude production from “Tetraselmis sp.…
View article: Mass-Balance Process Model of a Decoupled Aquaponics System
Mass-Balance Process Model of a Decoupled Aquaponics System Open
Highlights A mass balanced process model for a large, decoupled aquaponics system was developed in SuperPro Designer. The flows of N, P, and C were determined over the course of a full year of system operation. On average, tilapia assimila…
View article: Supplementary tables for "Direct Greenhouse Gas Emissions from a Pilot-Scale Aquaponics System"
Supplementary tables for "Direct Greenhouse Gas Emissions from a Pilot-Scale Aquaponics System" Open
This set of tables shows key inputs to the Auburn University aquaponics system over the course of four seasons from 2019-2020.
View article: Supplementary tables for "Direct Greenhouse Gas Emissions from a Pilot-Scale Aquaponics System"
Supplementary tables for "Direct Greenhouse Gas Emissions from a Pilot-Scale Aquaponics System" Open
This set of tables shows key inputs to the Auburn University aquaponics system over the course of four seasons from 2019-2020.
View article: Supplementary figures for "Direct Greenhouse Gas Emissions from a Pilot-Scale Aquaponics System"
Supplementary figures for "Direct Greenhouse Gas Emissions from a Pilot-Scale Aquaponics System" Open
Figure S1. Fish feeding rates over the course of the GHG study period. There was an intensive campaign of Tilapia production from May through August of 2019, resulting in the higher feeding rate. Production tempo slowed starting in Septemb…
View article: Supplementary figures for "Direct Greenhouse Gas Emissions from a Pilot-Scale Aquaponics System"
Supplementary figures for "Direct Greenhouse Gas Emissions from a Pilot-Scale Aquaponics System" Open
Figure S1. Fish feeding rates over the course of the GHG study period. There was an intensive campaign of Tilapia production from May through August of 2019, resulting in the higher feeding rate. Production tempo slowed starting in Septemb…
View article: Influence of Red Mud Catalyst and Reaction Atmosphere on Hydrothermal Liquefaction of Algae
Influence of Red Mud Catalyst and Reaction Atmosphere on Hydrothermal Liquefaction of Algae Open
View article: Direct Greenhouse Gas Emissions From a Pilot-Scale Aquaponics System
Direct Greenhouse Gas Emissions From a Pilot-Scale Aquaponics System Open
Highlights Direct greenhouse gas (GHG) emissions were measured in a decoupled aquaponics system. Solids concentration predicted methane emissions in the clarifier system. Lower pH in the plant system increased N 2 O emissions. Higher fish …
View article: Maximising the potential use of ground granulated blast-furnace slag (GGBS) in cement: An Irish investigation
Maximising the potential use of ground granulated blast-furnace slag (GGBS) in cement: An Irish investigation Open
The production of cement is estimated to account for around 8% of carbon dioxide (CO2) emissions worldwide, and the Irish construction industry yields fifteen million tonnes of CO2 annually. Measures must be employed to reduce these emissi…
View article: Biotechnology and Bioengineering: Volume 117, Number 1, January 2020
Biotechnology and Bioengineering: Volume 117, Number 1, January 2020 Open
View article: Impact of thiamine metabolites and spent medium from Chlorella sorokiniana on metabolism in the green algae Auxenochlorella prototheciodes
Impact of thiamine metabolites and spent medium from Chlorella sorokiniana on metabolism in the green algae Auxenochlorella prototheciodes Open
View article: Algal–bacterial synergy in treatment of winery wastewater
Algal–bacterial synergy in treatment of winery wastewater Open
There is significant potential for employing algae in tertiary wastewater treatment, however, little is known about the contribution of algae-bacteria synergy toward treatment performance. This study demonstrates potential synergy in the t…
View article: Ionic Liquids Impact the Bioenergy Feedstock-Degrading Microbiome and Transcription of Enzymes Relevant to Polysaccharide Hydrolysis
Ionic Liquids Impact the Bioenergy Feedstock-Degrading Microbiome and Transcription of Enzymes Relevant to Polysaccharide Hydrolysis Open
Pretreatment using ionic liquids (IL) is a promising approach for the conversion of lignocellulose to biofuels. Because IL can be inhibitory to enzymes and microorganisms involved in downstream hydrolysis and fermentation steps, discovery …