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This community features research by faculty members and graduate students in the Department of Biological Systems Engineering at Washington State University. This department works to discover and apply scientific engineering principles and methods to the processes of the natural world and provide advanced graduate education to engineering professionals. Research emphases include agricultural automation engineering; bioenergy and bioproducts engineering; food engineering; and land, air, water resources and environmental engineering.
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USING OXYGEN AND BIOPRESERVATION AS HURDLES TO IMPROVE SAFETY OF COOKED FOOD DURING STORAGE AT REFRIGERATION TEMPERATURES
(2018)Cook-chill food products are of concern because they can support the microbial growth of pathogens when subjecting to time/temperature abuses during processing and distribution. The maximum recommended storage temperatures ... -
UNCERTAINTIES ASSOCIATED WITH THE USE OF AIR TEMPERATURE AS INPUT IN DECISION SUPPORT SYSTEMS FOR VINEYARD MANAGEMENT
(2018)Under the assumption that tissue temperature and canopy air temperature are similar, air temperature is a primary input in agricultural models. However, most often, the data used as input in the models are measured at ... -
UNDERSTANDING THE BEHAVIOR OF THE OLIGOMERIC FRACTIONS DURING PYROLYSIS OILS UPGRADING
(2017)Fast pyrolysis oils represent most viable renewable sources for production of fuels and chemicals, and they could supplement significant portion of the depleting fossil fuels in near future. Progress on their utilization ... -
Study of Enterococcus faecium NRRL B-2354 as a surrogate for Salmonella in low-moisture foods and its use in the validation of radio frequency pasteurization
(2017)Salmonella outbreaks associated with low-moisture foods (LMFs) have become a food safety concern for the food industry, government and the public. A qualified Salmonella surrogate and procedures of applying it are needed ... -
TERMITE’S BIOMASS DEGRADATION STRATEGY AND BIOMIMIC TREATMENT
(2017)Termite, C. formosanus, is well known for its efficient wood digestion ability. The purpose of this dissertation reesasrch is to firstly investigate the related mechanism used by termite in wood digestion and then develop ... -
Microencapsulation of flaxseed oil using pea protein isolates
(2017)Pulses play a major role in addressing the future global food security and environmental challenges. They also contribute to balanced and healthy diets, therefore 2016 has been declared as International Year of pulses. ... -
CLIMATE CHANGE IMPACTS AND MITIGATION ON WHEAT SYSTEM IN PACIFIC NORTHWEST
(2017)Although the world’s food demand is projected to increase due to population growth, the future of the global food supply is not well understood given the complex nature of stressors such as climate change. The goal of this ... -
PROCESSING CARROT JUICE BY SELECTED NONTHERMAL TECHNOLOGIES AS HURDLES
(2017)Nonthermal food processing technologies such as High Pressure Processing (HPP), Pulsed Electric Fields (PEF), and Ultrasound (US) are novel juice pasteurization methods. The objective of this study was to use these ... -
Novel process for producing value-added lignin-based chemicals from alkaline effluent of chemical treatment of lignocellulosic biomass
(8/4/2016)The invention discloses a novel process to make hydrophobic interaction between lignin and ABA-block-copolymers, providing solubilization or encapsulation of the lignin in block copolymer micellar systems and utilizing the ... -
Chemoselective aerobic oxidation of aliphatic alcohols in lignin in micellar system
(2016-05)A micellar catalytic system for chemoselective aerobic oxidation of primary alcohol in the diol fragment guaiacylglycerol-guaiacyl ether as one of the most common structure in lignin has been proposed. The catalyst system ... -
Aspen Modeling of the NARA Conversion Processes
(2016)The report provides a set of process flow diagrams, process parameters, and mass and energy balances, which define the NARA conversion process. The described process begins at the plant gate with the reception of forest ... -
MACHINE VISION SYSTEM FOR ROBOTIC APPLE HARVESTING IN FRUITING WALL ORCHARDS
(2016)Mechanization in agriculture is often regarded as one of the greatest human achievements in the twentieth century. These technological advancements have led to significant reduction in human effort in the production of ... -
A maneuverability study on a wheeled bin management robot in tree fruit orchard environments
(2016)An important activity during harvesting is bin management, which traditionally requires heavy use of seasonal skilled labor. Due to increased labor cost and uncertainty with labor availability in recent years, tree fruit ... -
Renewable hydrocarbons for jet fuels from biomass and plastics via microwave-induced pyrolysis and hydrogenation processes
(2016)This dissertation aims to enhance the production of aromatic hydrocarbons in the catalytic microwave-induced pyrolysis, and maximize the production of renewable cycloalkanes for jet fuels in the hydrogenation process. In ... -
Advanced upgrading of pyrolysis oil via liquid-liquid extraction and catalytically upgrading
(2015)Biomass is one of the important renewable energy sources which are used to produce carbon-based liquid fuels through biochemical and thermochemical methods. The bio–oil from the biomass pyrolysis is an intermediate and ... -
INFLUENCE OF DIFFERENT FACTORS ON DESICCATION SURVIVAL AND THERMAL RESISTANCE OF SALMONELLA AND RADIOFREQUENCY PASTEURIZATION OF LOW-MOISTURE FOODS
(2015)Salmonella outbreaks associated with low-moisture food have become a food safety concern for the industry, government and public. Current sanitary practices have proven inefficient, intervention technologies need to be ... -
Measurements of Gaseous Emissions from Naturally Ventilated Livestock Barns
(2015)Agriculture contributes over 80% of national NH3 emission and ~55% is attributed to animal livestock operations. Livestock barns are one of the major emission sources due to their large footprint. Therefore, a pressing ... -
Detection of cherry tree branches and localization of shaking positions for automated sweet cherry harvesting
(2015)Sweet cherry industry has been challenged by increasingly uncertain availability and rising cost of farm labor. As harvesting is the most labor-intensive operation, there is a need for developing automated harvesting ... -
MITIGATION OF AMMONIA EMISSIONS FROM CONFINED DAIRY OPERATIONS
(2015)Over the past few decades, livestock agriculture in the United States (U.S.) has undergone rapid transformations. In general, concentrated animal feeding operations (CAFOs) have not only grown in size but also in tendency ... -
KINETIC CHARACTERIZATION OF HOT WATER AND DILUTE ACID PRETREATMENT OF LIGNOCELLULOSIC BIOMASS
(2014)Acidic aqueous-phase pretreatment is a promising approach that has been directed at maximizing intermediates yields (e.g. sugars, sugar degradation products, and lignin) from biomass for fuel and chemical production. This ...