Browsing by Author "Kumar, Ajay"
Now showing items 1-19 of 19
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Advanced biopower generation via gasification of biomass and municipal solid waste
Indrawan, Natarianto (2018-12)The overall goal of this study was to develop and analyze efficient power generation systems through the downdraft gasification of biomass and municipal solid waste (MSW) for distributed power applications. This goal was ... -
Characterization and Microwave Assisted Pyrolysis of Oklahoma Native Microalgae Strains for Bio-oil Production
Zhou, Nan (2015-12-01)Microalgae have received significant interest as a potential feedstock for the production of biofuel and other bioproducts. The main advantages of microalgae over the existing energy crops include the higher biomass ... -
Co-pyrolysis of microalgae, sludge and lignocellulosic biomass for aromatic hydrocarbon production
Chakraborty, Sourabh (2019-12)Co-pyrolysis, where a mixture of two or more different biomasses are subjected to pyrolysis, has gained attention over the years. Many studies have revealed that it leads to bio-oil production with desirable properties ... -
Development of a prototype crop residue burning machine
Sulastri, Ni Nyoman (2019-12)The purpose of this study was to design, develop and evaluate a prototype crop residue burning machine that burns the largest area while maintaining burn uniformity. Additionally, the concentration of air pollutants and ... -
Devolatilization Characteristics of Cellulose, Hemicellulose, Lignin and the Selected Biomass During Thermochemical Gasification: Experiment and Modeling Studies
Pasangulapati, Vamsee (Oklahoma State University, 2012-05-01)Pyrolysis and gasification are two promising thermochemical conversion technologies for conversion of biomass into fuels, chemicals and power. Devolatilization is the first major process that occurs in biomass gasification ... -
Effects of biomass feedstocks and gasification conditions on the physiochemical properties of char
Qian, Kezhen; Kumar, Ajay; Patil, Krushna N.; Bellmer, Danielle; Wang, Donghai; Yuan, Wenqiao; Huhnke, Raymond Leroy (MDPI, 2013-08-06)Char is a low-value byproduct of biomass gasification and pyrolysis with many potential applications, such as soil amendment and the synthesis of activated carbon and carbon-based catalysts. Considering these high-value ... -
Effects of Torrefaction and Densification on Devolatilization Kinetics and Gasification Performance of Switchgrass
Sarkar, Madhura (Oklahoma State University, 2013-12-01)The overall goal of this research was to investigate effects of pretreatments (torrefaction at 230 and 270°C, densification, and combined torrefaction and densification) on biomass properties, devolatilization kinetics ... -
Experimental investigation and simulation of a fluidized-bed gasifier using switchgrass
Sharma, Ashokkumar Misarilal (2013-12)The overall goal of this research was to improve and optimize yield and composition of syngas generated from biomass gasification using an autothermal lab-scale fluidized-bed gasifier, and to develop a biomass gasification ... -
Life cycle assessment of biochar versus metal catalysts used in syngas cleaning
Frazier, R. Scott; Jin, Enze; Kumar, Ajay (MDPI, 2015-01-15)Biomass gasification has the potential to produce renewable fuels, chemicals and power at large utility scale facilities. In these plants catalysts would likely be used to reform and clean the generated biomass syngas. ... -
Life Cycle Assessment of Two Catalysts Used in the Biofuel Syngas Cleaning Process and Analysis of Variability in Gasification
Jin, Enze (Oklahoma State University, 2014-07-01)Syngas known also as producer gas is the main product from biomass gasification process. This gas is considered as a renewable energy which can be converted into liquid fuels. Within syngas are significant amount of tars, ... -
Nutrient Dynamics in a Highly Weathered Soil Under No-Till and Heavy Metal Phytoavailability as Affected by Biochar Amendment
Antonangelo, Joao Arthur (2019-07)The nutrient dynamics in soils are affected by cropping systems, soil properties and environmental conditions. A field experiment under NT has been conducted in an Oxisol, which assesses rates of inorganic P and K fertilizers ... -
Properties of gasification-derived char and its utilization for catalytic tar reforming
Qian, Kezhen (2015-05)Char is a low-value byproduct of biomass gasification and pyrolysis with many potential applications, such as soil amendment and the synthesis of activated carbon. The overall goal of the proposed research was to develop ... -
Synergistic Co-Pyrolysis of Biomass and Natural Gas over HZSM-5 Catalysts
Yang, Zixu (2016-05-01)Bio-oil produced from pyrolysis of lignocellulose biomass is regarded as a potential intermediate to synthesize renewable hydrocarbon fuels and chemicals. However, the utilization of bio-oil has been challenged by undesirable ... -
Synthesis and Evaluation of Novel Biochar-based and Metal Oxide-based Catalysts for Removal of Model Tar (Toluene), Nh3, and H2s from Simulated Producer Gas
Bhandari, Pushpak Nandan (Oklahoma State University, 2012-12-01)Gasification is a thermochemical conversion process in which carbonaceous feedstock is gasified in a controlled atmosphere to generate producer gas. The producer gas is used for production of heat, power, fuels and chemicals. ... -
Thermal Decomposition and Gasification of Carbohydrates, Lipids, Proteins and Food Waste
Collins, Jacob Cody (2015-05-01)The overall goal of this research was to investigate thermal decomposition of components of food and how food composition affects gasification performance. The specific objectives were to (1) investigate the thermal ... -
Thermochemical biomass gasification: a review of the current status of the technology
Kumar, Ajay; Jones, David D.; Hanna, Milford A. (MDPI, 2009-07-21)A review was conducted on the use of thermochemical biomass gasification for producing biofuels, biopower and chemicals. The upstream processes for gasification are similar to other biomass processing methods. However, ... -
Treatment of biomass-derived synthesis gas using commercial steam reforming catalysts and biochar
Marin, Luz Stella (2011-12)Scope and Method of Study: The destruction of tars is a crucial technological barrier for the development and further commercialization of biomass gasification. The decomposition of tar compounds using catalysts is a ... -
Upgrading of Bio-oil by Incorporating Methane in Fast Pyrolysis of Municipal Solid Waste (MSW) and Biomass
Tshikesho, Redemptus Shiloondyodhi (2017-12-01)Fast pyrolysis is promising technology that produces liquid fuels (known as bio-oil) through thermal decomposition of biomass or municipal solid waste in absence of oxygen. Bio-oil has potential application in the ... -
Wet scrubbing of biomass producer gas tars using vegetable oil
Bhoi, Prakashbhai Ramabhai (2014-05)The overall aims of this research study were to generate novel design data and to develop an equilibrium stage-based thermodynamic model of a vegetable oil based wet scrubbing system for the removal of model tar compounds ...