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Recovery Of Agricultural Nutrients From Biorefineries, Daniel Elliott Carey, Yu Yang, Patrick J. Mcnamara, Brooke Mayer
Recovery Of Agricultural Nutrients From Biorefineries, Daniel Elliott Carey, Yu Yang, Patrick J. Mcnamara, Brooke Mayer
Civil and Environmental Engineering Faculty Research and Publications
This review lays the foundation for why nutrient recovery must be a key consideration in design and operation of biorefineries and comprehensively reviews technologies that can be used to recover an array of nitrogen, phosphorus, and/or potassium-rich products of relevance to agricultural applications. Recovery of these products using combinations of physical, chemical, and biological operations will promote sustainability at biorefineries by converting low-value biomass (particularly waste material) into a portfolio of higher-value products. These products can include a natural partnering of traditional biorefinery outputs such as biofuels and chemicals together with nutrient-rich fertilizers. Nutrient recovery not only adds an additional …
Spatially Explicit Life Cycle Assessment: Opportunities And Challenges Of Wastewater-Based Algal Biofuels In The United States, Javad Roostaei, Yongli Zhang
Spatially Explicit Life Cycle Assessment: Opportunities And Challenges Of Wastewater-Based Algal Biofuels In The United States, Javad Roostaei, Yongli Zhang
Civil and Environmental Engineering Faculty Research Publications
This work presented a Spatially-Explicit-High-Resolution Life Cycle Assessment (SEHR-LCA) model for wastewater-based algal biofuel production, by integrating life cycle assessment, GIS analysis, and site-specific Wastewater Treatment Plants (WWTPs) data analysis. Wastewater resources, land availability, and meteorological variation were analyzed for algae cultivation. Three pathways, Microwave Pyrolysis, hydrothermal liquefaction, and lipid extraction were modeled for bio-oil conversion. This model enables the assessment of seasonal and site-specific variations in productivity and environmental impacts of wastewater-based algal bio-oil across the whole U.S. Model results indicate that wastewater-based algal bio-oil can provide an opportunity to increase national biofuel output. The potential production of algal …
Granular Biochar Compared With Activated Carbon For Wastewater Treatment And Resource Recovery, Tyler M. Huggins, Alexander Haeger, Justin C. Biffinger, Zhiyong Jason Ren
Granular Biochar Compared With Activated Carbon For Wastewater Treatment And Resource Recovery, Tyler M. Huggins, Alexander Haeger, Justin C. Biffinger, Zhiyong Jason Ren
U.S. Navy Research
Granular wood-derived biochar (BC) was compared to granular activated carbon (GAC) for the treatment and nutrient recovery of real wastewater in both batch and column studies. Batch adsorption studies showed that BC material had a greater adsorption capacity at the high initial concentrations of total chemical oxygen demand (COD-T) (1200 mg L-1), PO4 (18 mg L-1), and NH4 (50 mg L-1) compared to GAC. Conversely the BC material showed a lower adsorption capacity for all concentrations of dissolved chemical oxygen demand (COD-D) and the lower concentrations of PO …
Emerging Investigators Series: Pyrolysis Removes Common Microconstituents Triclocarban, Triclosan, And Nonylphenol From Biosolids, J. J. Ross, Daniel Zitomer, T. R. Miller, C. A. Weirich, Patrick J. Mcnamara
Emerging Investigators Series: Pyrolysis Removes Common Microconstituents Triclocarban, Triclosan, And Nonylphenol From Biosolids, J. J. Ross, Daniel Zitomer, T. R. Miller, C. A. Weirich, Patrick J. Mcnamara
Civil and Environmental Engineering Faculty Research and Publications
Reusing biosolids is vital for the sustainability of wastewater management. Pyrolysis is an anoxic thermal degradation process that can be used to convert biosolids into energy rich py-gas and py-oil, and a beneficial soil amendment, biochar. Batch biosolids pyrolysis (60 minutes) revealed that triclocarban and triclosan were removed (to below quantification limit) at 200 °C and 300 °C, respectively. Substantial removal (>90%) of nonylphenol was achieved at 300 °C as well, but 600 °C was required to remove nonylphenol to below the quantification limit. At 500 °C, the pyrolysis reaction time to remove >90% of microconstituents was less than …