Tag Archives: Brewer

Characterization of Guar Residues for Thermochemical Conversion to Fuels

Description: Guar and guayule are two crops with potential for large-scale production in the arid Southwest. The target products are natural rubber, resin (for commodity chemicals), and bagasse (for liquid fuels) from guayule, and guar gum (emulsifier), guar meal (animal feed) and bagasse (for liquid fuels) from guar. This project is part of a larger…
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Design of Biomass-Derived Activated Carbons for Adsorption of Uranium from Mine Tailings

Description: Northwestern New Mexico is home to hundreds of abandoned uranium mines and home to forests that produce an excess of woody biomass residues that present a wildfire hazard. These residues can be used to produce activated carbons, high surface-area materials that can adsorb contaminants out of air and water. The goal of this project…
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Calculation of Engineering Parameters for Continuous Flow Hydrothermal Liquefaction Reactor

Description: Hydrothermal liquefaction (HTL) of algae in a continuous flow reactor to produce bio-crude oil requires careful control of flow rates and heating rates to allow sufficient reaction time while preventing the formation of clogs. In the pilot scale HTL reactor system, the original design parameters allow for flow rates up to 250 mL/min. The…
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Characterization of Pyrolysis Feedstocks and Biochars by SEM and TGA

Description: Understanding the composition and properties of a biomass feedstock is critical to understanding and predicting the properties of that feedstock’s pyrolysis products. In this project, the thermal decomposition of biomass-derived and non-biomass-derived components of a NASA spacecraft waste simulant will be measured by thermogravimetric analysis (TGA) to understand the volatilization rates. Those volatilization rates…
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Hydrothermal Liquefaction of Algae Grown on Dairy and Municipal Wastewaters

Description: Hydrothermal liquefaction (HTL) converts wet biomass at high temperatures and high pressures into a solid char, an oil-phase liquid, an aqueous phase liquid, and non-condensable gases. The different phases provide opportunities for recovery of energy and materials from wastes. In this project, HTL is used to recover energy (in the form of bio-crude oil)…
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Development of Materials for Teaching Sustainability Using Biomass-Derived Resources

Description: Guar and guayule are two crops with potential for large-scale production in the arid Southwest. The target products are natural rubber, resin (for commodity chemicals), and bagasse (for liquid fuels) from guayule, and guar gum (emulsifier), guar meal (animal feed) and bagasse (for liquid fuels) from guar. This project is part of a larger…
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Recovering Energy and Nutrients from Wastewater Treatment

Description: Two methods of recovering energy from wastewater treatment being explored for the Las Cruces Wastewater Treatment facilities are anaerobic digestion with electricity production and algae growth with hydrothermal liquefaction (HTL) to liquid fuels. Both options include ways to recover N and P nutrients in composted biosolids or HTL aqueous phase/char fractions. This project focuses…
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Dr. Brewer featured in CoEngr news

NMSU professor finding ways to remove organic pollutants in water

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Brewer receives $395,332 from NASA for NDMA adsorption research

The evaluation of low-level N-Nitrosodimethylamine (NDMA) in water has become a recent concern for the U.S. Environmental Protection Agency. Many states including New Mexico and California have reported NDMA contamination in drinking water. Activated carbon created from pecan shells may provide a new alternative to UV photolysis for the treatment of NDMA-contaminated water. The aim of…
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Developing Liquid Scintillation Counting Method for Quantification of NDMA at Ultra-Low Concentrations

Description: As part of the ongoing project with NASA White Sands Test Facility on removal of N-nitrosodimethylamine (NDMA) from groundwater, this project focuses on the development on a new analytical method to measure the NDMA at the part per trillion levels needed for this scenario. By using 14C-labeled NDMA in synthesized solutions, on-campus and timely…
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