Browsing by Author "Holtzapple, Mark T"
Now showing items 1-16 of 16
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A High Efficiency and Clean Combustion Strategy for Compression Ignition Engines: Integration of Low Heat Rejection Concepts with Low Temperature Combustion
Li, Tingting (2017-07-18)Reciprocating engines are pervasively used in the transportation industry. The transportation industry is centered on achieving two important but often conflicting goals: 1) improved energy efficiency and 2) decreased ... -
A Study on the Durability of Flexible Pavement Materials: Asphalt Absorption and Oxidation Kinetics
Liu, Guanlan (2015-08-10)Asphalt pavement is the major pavement type worldwide. Today, over 90% highways are paved with asphalt concrete. Like other pavement types, asphalt pavement suffers from certain types of damage, which call for maintenance. ... -
Anaerobic fermentation of rice straw and chicken manure to carboxylic acids
Agbogbo, Frank Kwesi (Texas A&M University, 2007-04-25)In this work, 80% lime-treated rice straw and 20% lime-treated chicken manure were used as substrates in rotary fermentors. Countercurrent fermentation was performed at various volatile solid loading rates (VSLR) and liquid ... -
Analysis of low-cost building material for the MixAlco process
Titzman, L. Clinton (2009-05-15)The development of biofuels as an alternative fuel source highlights the MixAlco process as one method to convert organic waste into alcohol fuels. The pretreatment and fermentation of waste is integral to the process ... -
Batch Enzymatic Hydrolysis of Pretreated Corn Stover and Improvements with Countercurrent Saccharification
Liang, Chao (2015-07-29)Enzymatic saccharification of non-food biomass, such as lignocellulose, can produce sugars. Sugars are the common feedstock for bioethanol, which can be substituted for transportation fuel and address the shortage of fossil ... -
Comparison of Biological and Thermal (Pyrolysis) Pathways for Conversion of Lignocellulose to Biofuels
Imam, Tahmina 1983- (2012-11-30)Because of the limited supply of imported crude oil and environmental degradation, renewable energy is becoming commercially feasible and environmentally desirable. In this research, biological and thermal (pyrolysis) ... -
Comparison of mechanistic models in the initial rate enzymatic hydrolysis of AFEX-treated wheat straw
Brown, Russell F; Agbogbo, Frank K; Holtzapple, Mark T (Biotechnology for Biofuels, 2010) -
Countercurrent Enzymatic Saccharification of Lignocellulosic Biomass and Improvements Over Batch Operation
Zentay, Agustin Nicholas (2014-05-05)Transportation fuels are the major driver for fossil fuel production, a burden that many countries have tried to ease by blending fossil fuels with biofuel substitutes such as ethanol. Current U.S. ethanol production relies ... -
Effect of Liquid Residence Time, Extraction, and Chain Elongation on Countercurrent Mixed-Acid Fermentations
Yang, Kefan (2017-05-10)The carboxylate platform is one of three recognized processes (sugar, thermochemical, and carboxylate) that converts biomass into chemicals and hydrocarbon fuels. One example of the carboxylate platform is the MixAlco ... -
Effects of Product Removal Using Ion-exchange Resin and Sodium Hydroxide Pretreatment in Mixed-culture Fermentation
Hsu, Shen-Chun (2019-04-12)In mixed-culture fermentations of lignocellulosic biomass, periodical product removal has proven to reduce product inhibition and thereby increase biomass digestion. Previously, ion-exchange resin (Amberlite IRA-67) was ... -
Energy Portfolio Assessment Tool (EPAT): Sustainable Energy Planning Using the WEF Nexus Approach - Texas Case Study
Mroue, Ahmed Mohamad (2017-08-04)The future energy portfolio at the national and subnational levels should consider its impact on water resources and environment. Although energy resources are the main contributors to the national economic growth, these ... -
Ketone Production from the Thermal Decomposition of Carboxylate Salts
Landoll, Michael 1984- (2012-08-15)The MixAlco process uses an anaerobic, mixed-culture fermentation to convert lignocellulosic biomass to carboxylate salts. The fermentation broth must be clarified so that only carboxylate salts, water, and minimal impurities ... -
Maximizing Medium-chain Carboxylates in Mixed-culture Fermentation
Lonkar, Sagar Kishor (2016-11-14)Global warming, steadily increasing energy demand, and limited fossil fuel reserves are growing concerns of modern society. In the past few decades, significant advances in renewable energy research have helped reduce ... -
Oligomerization and Catalytic Ketonization in the Mixalco™ Process
Taco Vasquez, Sebastian (2013-10-29)This research describes the zeolite use in the oligomerization and catalytic ketonization steps of the MixAlco™ process. In this dissertation, the following six products associated with the MixAlco™ process were studied: ... -
Passive Flow Control Method for Mitigation of Unsteady Load Excursions on a Wind Turbine Blade
Weber, Jamie (2012-11-16)Stochastic flow conditions, such as large unsteady wind gusts and coherent structures in turbulent winds, cause detrimental blade loadings to horizontal axis wind turbines (HAWT). Such loadings lead to large blade root ... -
The Effect of Grinding Lignocellulosic Biomass as a Mixed-Acid Fermentation Cotreatment
Marks, DrewIn order to prevent the detrimental effects of climate change in the near future, novel energy solutions must be explored and developed today. Lignocellulosic biomass (LCB), a major component in wood-like plant matter, is ...