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Articles 1 - 30 of 30
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Comparison Of Novel Carboneous Structures To Treat Nitroaromatic Impacted Water, Benjamin M. Doane
Comparison Of Novel Carboneous Structures To Treat Nitroaromatic Impacted Water, Benjamin M. Doane
Theses and Dissertations
Carboneous materials such as carbon nanotube (CNT), granular activated carbon (GAC), and biochar are promising materials for the removal of organic contaminants from aqueous phase solutions. CNTs have astonishing mechanical strength, chemical and thermal stability and high surface area. While biochar, similar to GAC, having an extremely porous structure and high surface area, can be produced in more austere conditions with native materials. In this study, novel CNT-Hybrid structures (CNT-HS), hardwood pellet (HWP) Biochar and standard GAC (F-600 GAC) were used as adsorbents to treat water contaminated by a model nitroaromatic compound, 2,4-dinitrotoluene (DNT).
Corn Stover Nutrient Removal Estimates For Central Iowa, Usa, Douglas Karlen, John Kovar, Stuart J. Birrell
Corn Stover Nutrient Removal Estimates For Central Iowa, Usa, Douglas Karlen, John Kovar, Stuart J. Birrell
Douglas L Karlen
One of the most frequent producer-asked questions to those persons striving to secure sustainable corn (Zea mays L.) stover feedstock supplies for Iowa’s new bioenergy conversion or other bio-product facilities is “what quantity of nutrients will be removed if I harvest my stover?” Our objective is to summarize six years of field research from central Iowa, U.S.A. where more than 600, 1.5 m2 samples were collected by hand and divided into four plant fractions: vegetative material from the ear shank upward (top), vegetative material from approximately 10 cm above the soil surface to just below the ear (bottom), cobs, and …
Targeted Products From Fast-Hydropyrolysis And Hydrodeoxygenation Of Biomass, Ian Tad Smith
Targeted Products From Fast-Hydropyrolysis And Hydrodeoxygenation Of Biomass, Ian Tad Smith
Open Access Theses
Previously, the H2Bioil process was proposed as a possible way to convert sustainably available intact biomass into liquid fuels. The optimization of this process and possible synergies with other biomass conversion processes are presented in this thesis.
The selectivity of the PtMo hydrodeoxygenation catalyst was tuned using two different hydrogen partial pressures: 25 bar, and 2.5 bar. This effect was studied on cellulose and intact biomass samples to determine the effect that hydrogen has upon the retention of aromatic compounds found in intact biomass. These experiments show that it is possible for the hydrogenation activity of the PtMo catalyst to …
Biochar From Pyrolysis Of Biosolids For Nutrient Adsorption And Turfgrass Cultivation, Daniel Elliott Carey, Patrick J. Mcnamara, Daniel Zitomer
Biochar From Pyrolysis Of Biosolids For Nutrient Adsorption And Turfgrass Cultivation, Daniel Elliott Carey, Patrick J. Mcnamara, Daniel Zitomer
Civil and Environmental Engineering Faculty Research and Publications
At water resource recovery facilities, nutrient removal is often required and energy recovery is an ever-increasing goal. Pyrolysis may be a sustainable process for handling wastewater biosolids because energy can be recovered in the py-gas and py-oil. Additionally, the biochar produced has value as a soil conditioner. The objective of this work was to determine if biochar could be used to adsorb ammonia from biosolids filtrate and subsequently be applied as a soil conditioner to improve grass growth. The maximum carrying capacity of base modified biochar for NH3−N was 5.3 mg/g. Biochar containing adsorbed ammonium and potassium was …
Pyrolysis Based Biorefineries For The Production Of Fermentable Substrates, Luis Carlos Luque-Moreno
Pyrolysis Based Biorefineries For The Production Of Fermentable Substrates, Luis Carlos Luque-Moreno
Electronic Thesis and Dissertation Repository
Fast pyrolysis is rapid thermal conversion process capable of transforming multiple feedstocks into various energy carriers, specifically pyrolysis oil, bio gas, and bio char. The oil phase is of high value due to its complex mixtures of organic molecules, along with large number of anhydrous carbohydrates, which can be easily transformed into glucose via acid hydrolysis. These carbohydrates can be either biocatalyzed into fuels and chemicals by microorganisms or converted after further treatment steps. However quantities of these carbohydrates in the oil are a function of feedstock composition and process parameters. The research presented in this thesis focuses on producing …
Transport Of Heat Activated Persulfate And Its Application For In-Situ Chemical Oxidation Of Residual Trichloroethylene, Lauren Dekker Quig
Transport Of Heat Activated Persulfate And Its Application For In-Situ Chemical Oxidation Of Residual Trichloroethylene, Lauren Dekker Quig
Dissertations and Theses
In situ chemical oxidation is a promising technology for the remediation of persistent subsurface contamination. Increasingly, the persulfate ion is being studied for use in these systems, both on its own as a strong oxidant and as the precursor to the even more reactive sulfate radical. Persulfate has been shown to treat a wide range of contaminants, from traditional Superfund contaminants such as chlorinated solvents to emerging pharmaceutical contaminants. Additionally, persulfate ISCO can be tailored to site and pollutant specific characteristics based on the method of persulfate activation (e.g., energy and catalysis activation) to the sulfate radical. Thermal activation of …
Impulse, South Dakota State University
Impulse, South Dakota State University
Impulse (Jerome J. Lohr College of Engineering Publication)
Features
[Page] 2 A new home Following dedication in April, several programs now are operating from a new three-story, 62,000-square-foot building.
[Page] 6 Family tradition—Rittershaus A third generation of RIttershauses is now pursuing an engineering degree at State.
[Page] 8 Family tradition—Solberg A new generation of Solbergs have enrolled at SDSU. They can trace a heritage all the way back to their great-great-great uncle Halvor Solberg.
[Page] 11 Halvor Solberg There is much more to engineering pioneer Halvor Solberg than a name on the building.
Students
[Page] 12 Sport and science Time and time again, student-athletes are proving that success …
Conference Program And Abstracts, Nicolas Abatzoglou, Sascha Kersten, Dietrich Meier
Conference Program And Abstracts, Nicolas Abatzoglou, Sascha Kersten, Dietrich Meier
Biorefinery I: Chemicals and Materials From Thermo-Chemical Biomass Conversion and Related Processes
No abstract provided.
Production Of Activated Carbons From Pyrolytic Char For Environmental Applications, Anastasia Colomba
Production Of Activated Carbons From Pyrolytic Char For Environmental Applications, Anastasia Colomba
Electronic Thesis and Dissertation Repository
Biomass pyrolysis has the potential to become a major component of future biorefineries, since biomass is cracked to produce gases, liquid products (bio-oil) and solid products (bio-char). In order for the process to be economically feasible, it is necessary to obtain the maximum value from each stream, thus no by-product can be regarded as a waste.
Bio-char is normally regarded as a by-product of fast pyrolysis, which is optimized to target bio-oil production. However, there are many potentially attractive applications for it: for example, it can be used for the production of activated carbons, which are the most commonly used …
Hydrothermal Catalytic Liquefaction And Deoxygenation Of Biomass For Renewable Fuel Production, Sergiy Popov
Hydrothermal Catalytic Liquefaction And Deoxygenation Of Biomass For Renewable Fuel Production, Sergiy Popov
Civil & Environmental Engineering Theses & Dissertations
In recent years, sub- and supercritical water technologies received an increasing attention because of the numerous advantages they offer for biomass converting into biofuels. Water at elevated temperatures and pressures provides an ideal medium for chemical transformations. It serves as a reactant, reaction medium, and catalyst that helps biomass compounds undergo hydrolysis, depolymerization, dehydration, decarboxylation, and condensation/repolymerization reactions. Biomass is the fourth largest source of energy in the world after coal, oil, and natural gas that has the potential to provide the large scale substitution of hydrocarbon-based liquid transportation fuels and minimize the environmental issues. Biomass typically contains 40-60% oxygen. …
Hydrogen And Syngas Production From Gasification Of Lignocellulosic Biomass In Supercritical Water Media, Jun-Ki Choi, Abtin Ataei, Ahmad Tavasoli, Farid Safari
Hydrogen And Syngas Production From Gasification Of Lignocellulosic Biomass In Supercritical Water Media, Jun-Ki Choi, Abtin Ataei, Ahmad Tavasoli, Farid Safari
Mechanical and Aerospace Engineering Faculty Publications
Novel biomass-processing technologies have been recently used for conversion of organic wastes into valuable biofuels like bio-hydrogen. Agricultural wastes are available and renewable energy resources to supply energy demand of the future. The purpose of this study is to investigate the production of hydrogen-rich syngas from wheat straw, walnut shell, and almond shell.
Catalytic Pyrolysis Of Olive Mill Wastewater Sludge, Hamza Abdellaoui
Catalytic Pyrolysis Of Olive Mill Wastewater Sludge, Hamza Abdellaoui
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
From 2008 to 2013, an average of 2,821.4 kilotons/year of olive oil were produced around the world. The waste product of the olive mill industry consists of solid residue (pomace) and wastewater (OMW). Annually, around 30 million m3 of OMW are produced in the Mediterranean area, 700,000 m3 year−1 in Tunisia alone. OMW is an aqueous effluent characterized by an offensive smell and high organic matter content, including high molecular weight phenolic compounds and long-chain fatty acids. These compounds are highly toxic to micro-organisms and plants, which makes the OMW a serious threat to the environment if …
Transformation Of Swine Manure And Algal Consortia To Value-Added Products, Mahmoud A. Sharara
Transformation Of Swine Manure And Algal Consortia To Value-Added Products, Mahmoud A. Sharara
Graduate Theses and Dissertations
The swine production sector is projected to grow globally. In the past, this growth manifested itself in increased herd sizes and geographically concentrated production. Although economically sound, these trends had negative consequences on surrounding ecosystems. Over-application of manure resulted in water quality degradation, while long-term storage of manure slurries was found to promote release of potent GHG emissions. There is a need for innovative approaches for swine manure management that are compatible with current scales of production, and increasingly strict environmental regulations.
This study aims to investigate the potential for incorporating gasification as part of a novel swine manure management …
Residence Time Distribution Measurements In A Downer Reactor & Gas-Solids Separator, Martin Huard
Residence Time Distribution Measurements In A Downer Reactor & Gas-Solids Separator, Martin Huard
Electronic Thesis and Dissertation Repository
An integrated gas-solids separator and stripper was developed, tested, and optimized for a circulating fluidized bed (CFB) downer at the Institute for Chemicals and Fuels from Alternative Resources (ICFAR) at Western University. The downer, designed for pyrolytic co-processing of heavy oil and biomass to valuable liquid fuels and chemicals, capitalizes on the plug flow behavior of gravity-assisted downward gas-solids flow, which has been proven in previous work. However, the effect of the reactor exit on unit performance has not been studied. Therefore, a comprehensive assessment of the gas-solids separator performance in a 0.07 m diameter, 1.34 m tall cold model …
Pyrolysis For Estrogens Removal From Wastewater Solids, Thomas C. Hoffman
Pyrolysis For Estrogens Removal From Wastewater Solids, Thomas C. Hoffman
Master's Theses (2009 -)
Wastewater treatment processes are not designed to remove estrogenic micropollutants and therefore when wastewater biosolids are land applied estrogenic micropollutants are discharged to the environment. Release of estrogenic compounds has deleterious effects on the terrestrial environment. Public concern stemming from micropollutants may reduce the value of biosolids which are important to water resource reclamation facilities (WRRF) as by-products. The objective of this research was to evaluate pyrolysis, the partial decomposition of organic material in an oxygen-deprived system under high temperatures, as a sustainable solution to remove estrogenic compounds from biosolids while producing a useable soil conditioner called biochar. Batch pyrolysis …
Comparative Kinetic Study Of Functionalized Carbon Nanotubes And Magnetic Biochar For Removal Of Cd2+ Ions From Wastewater
Faculty of Engineering University of Malaya
We did a comparative study between functionalized multiwall carbon nanotube (FMWCNTs), and magnetic biochar was carried out to determine the most efficient adsorbent to be employed in the Cd2+ ion removal. We optimized parameters such as agitation speed, contact time, pH and adsorbent dosage using design expert vrsion 6.08. The statistical analysis reveals that optimized condition for highest removal of Cd2+ are at pH 5.0, with dosage 1.0 g, agitation speed and contact time of 100 rpm and 90 minutes, respectively. For the initial concentration of 10mg/l, the removal efficiency of Cd2+ using FMWCNTs was 90% and and 82% of …
Research Week 2015, Linda Gardiner, David Owerbach
Research Week 2015, Linda Gardiner, David Owerbach
Office of Research Institutional Research and Scholarship
No abstract provided.
Characterization Of Two Biochars Derived From Horse Muck And Their Ability To Reduce Pathogen Transport In Soil, David Griffith
Characterization Of Two Biochars Derived From Horse Muck And Their Ability To Reduce Pathogen Transport In Soil, David Griffith
Theses and Dissertations--Biosystems and Agricultural Engineering
Biochars have been created and characterized from a variety livestock manure biomass including poultry, dairy, and swine. However, no research has been conducted on the physical and chemical makeup of biochar pyrolyzed from horse muck. Two horse muck derived biochars containing either straw (HS) or woodchip (HW) bedding were pyrolyzed at 700°C and characterized for their physical and chemical properties. Tests revealed both biochars had high alkalinity, moderate specific conductivity, and low surface area as compared to other biochars in the literature. HS contained more mineral structures than HW. Scanning electron microscopy presented differences in particle shape, size, and presence …
Capstone Interdisciplinary Team Project: A Requirement For The Ms In Sustainability Degree, Latif M. Jiji, Irvin Sam Schonfeld, George A. Smith
Capstone Interdisciplinary Team Project: A Requirement For The Ms In Sustainability Degree, Latif M. Jiji, Irvin Sam Schonfeld, George A. Smith
Publications and Research
Purpose – This paper aims to describe experience gained with a required six-credit year-long course, the Capstone Interdisciplinary Team Project, a key component of the Master of Science (MS) in Sustainability degree at the City College of New York. A common feature of sustainability problems is their interdisciplinary nature. Solutions to sustainability problems often require professionals with different training and backgrounds to work as a team. A sustainability curriculum should provide students with the skills needed to competently participate in an interdisciplinary team.
Design/methodology/approach – Instructors drawn from different departments and divisions of the college developed a pool of sustainability-focused …
A Facile And Acid-Free Approach Towards The Preparation Of Sulphonated Multi-Walled Carbon As A Strong Protonic Acid Catalyst For Biodiesel Production, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Thz Spectroscopic Characterization Of Biochar, Lucia Lepodise, R A. Lewis, Stephen D. Joseph, Joseph Horvat
Thz Spectroscopic Characterization Of Biochar, Lucia Lepodise, R A. Lewis, Stephen D. Joseph, Joseph Horvat
Faculty of Engineering and Information Sciences - Papers: Part A
Fertile dark soils made by humans in the Amazon basin, terra preta, have influenced the manufacture of the biochar based fertilizers. Different types of biochar exist but not all of them are good in improving the quality of the soil. FTIR was used to distinguish between the more and the less fertile biochar.
Lowering N2o Emissions From Soils Using Eucalypt Biochar: The Importance Of Redox Reactions, P Quin, Stephen D. Joseph, O Husson, Scott Donne, David R. G Mitchell, Paul G. Munroe, D Phelan, A L. Cowie, Lukas Van Zwieten
Lowering N2o Emissions From Soils Using Eucalypt Biochar: The Importance Of Redox Reactions, P Quin, Stephen D. Joseph, O Husson, Scott Donne, David R. G Mitchell, Paul G. Munroe, D Phelan, A L. Cowie, Lukas Van Zwieten
Faculty of Engineering and Information Sciences - Papers: Part A
Agricultural soils are the primary anthropogenic source of atmospheric nitrous oxide (N2OO), contributing to global warming and depletion of stratospheric ozone. Biochar addition has shown potential to lower soil N2OO emission, with the mechanisms remaining unclear. We incubated eucalypt biochar (550 °C) - 0, 1 and 5% (w/w) in Ferralsol at 3 water regimes (12, 39 and 54% WFPS) - in a soil column, following gamma irradiation. After N2OO was injected at the base of the soil column, in the 0% biochar control 100% of expected injected N2OO was released into headspace, declining to 67% in the 5% amendment. In …
Carbon Dioxide Capture With Amine Functionlized Graphene Oxide, Renee Zeleszki
Carbon Dioxide Capture With Amine Functionlized Graphene Oxide, Renee Zeleszki
Electronic Theses and Dissertations
Abstract: amine functionalized graphene oxide was used as sorbent in order to achieve carbon dioxide capture. In this study, micro size graphite flakes was prepared according to modified hummers method and "hummers' method with additional kmno4." Graphene oxide was then functionalized with ethylenediamine (eda). Different purification methods for graphene oxide were studied as well as different functionalization method times. Graphite oxide and functionalized graphene oxide has been analyzed with fourier transform infrared spectroscopy (ftir) for chemical structure. Thermal gravimetric analysis (tga) was used to test co2 capture capacity. Functionalized graphene oxide that has been purified with 30 washes via centrifuge …
Production Of Activated Carbons From Pyrolytic Biochar, Anastasia Colomba, Franco Berruti, Cedric Briens, Ajay Dalai, Rambabu Nedunury, Alberto Colomba, Silvia Fiore, Giuseppe Genon
Production Of Activated Carbons From Pyrolytic Biochar, Anastasia Colomba, Franco Berruti, Cedric Briens, Ajay Dalai, Rambabu Nedunury, Alberto Colomba, Silvia Fiore, Giuseppe Genon
Biorefinery I: Chemicals and Materials From Thermo-Chemical Biomass Conversion and Related Processes
No abstract provided.
Evolution Of Palm Oil Mills Into Biorefineries: Technical, And Environmental Assessment Of Six Biorefinery Options, Jesus Alberto Garcia-Nunez, Manuel Garcia-Perez, Daisy Tatiana Rodriguez, Nidia Elizabeth Ramirez, Carlos Fontanilla, Claudio Stockle, James Amonette, Craig Frear, Electro Silva
Evolution Of Palm Oil Mills Into Biorefineries: Technical, And Environmental Assessment Of Six Biorefinery Options, Jesus Alberto Garcia-Nunez, Manuel Garcia-Perez, Daisy Tatiana Rodriguez, Nidia Elizabeth Ramirez, Carlos Fontanilla, Claudio Stockle, James Amonette, Craig Frear, Electro Silva
Biorefinery I: Chemicals and Materials From Thermo-Chemical Biomass Conversion and Related Processes
No abstract provided.
Electrical Characterization Of Different Carbon Based Polymer Composites, Mauro Giorcelli, Aamer Abbas Khan, Patrizia Savi, Franco Berruti, Alberto Tagliaferro
Electrical Characterization Of Different Carbon Based Polymer Composites, Mauro Giorcelli, Aamer Abbas Khan, Patrizia Savi, Franco Berruti, Alberto Tagliaferro
Biorefinery I: Chemicals and Materials From Thermo-Chemical Biomass Conversion and Related Processes
No abstract provided.
Two-Stage Thermochemical Conversion Of Lignin Into Aromatic Chemicals, Paul J. De Wild, A. Kloekhorst, H. H. Heeres, W. J.J. Huijgen
Two-Stage Thermochemical Conversion Of Lignin Into Aromatic Chemicals, Paul J. De Wild, A. Kloekhorst, H. H. Heeres, W. J.J. Huijgen
Biorefinery I: Chemicals and Materials From Thermo-Chemical Biomass Conversion and Related Processes
No abstract provided.
Proton-Electrostatic Localization: Explaining The Bioenergetic Conundrum In Alkalophilic Bacteria, James Weifu Lee
Proton-Electrostatic Localization: Explaining The Bioenergetic Conundrum In Alkalophilic Bacteria, James Weifu Lee
Chemistry & Biochemistry Faculty Publications
The decades-longstanding energetic conundrum of alkalophilic bacteria as to how they are able to synthesize ATP has now, for the first time, been clearly solved using the proton-electrostatics localization hypothesis. This is a major breakthrough advance in understanding proton-coupling bioenergetics over the Nobel-prize work of Peter Mitchell’s chemiosmotic theory. The widespread textbook Mitchellian proton motive force (pmf) equation has now been significantly revised. Use of the newly derived equation results in an overall pmf value (215~233 mV) that is more than 4 times larger than that (44.3 mV) calculated from the Mitchellian equation for the alkalophilic bacteria growing at pH …
Carbon Dioxide Capture By Functionalized Graphene Oxide Adsorbent, Sulihat Oreoluwa Aloba
Carbon Dioxide Capture By Functionalized Graphene Oxide Adsorbent, Sulihat Oreoluwa Aloba
Honors Theses
The accumulation of CO2 in the atmosphere is a major environmental hazard. As a result various methods for capturing CO2 was suggested. One of such methods included the development of carbon-based adsorbents due to their large surface area and low heat capacity for CO2 capture which was studied in this report. Graphene oxide (GO) was selected as the adsorbent for its potential benefit in CO2 capture. A modified hummers method was used for the synthesis of GO which showed the existence of the hydroxyl (3440 cm-1), epoxyl (1036 cm-1) and carboxyl (1720 cm-1) functional groups in its FTIR spectra. The …
Phosphate Removal And Recovery From Wastewater By Natural Materials For Ecologically Engineered Wastewater Treatment Systems, Daniel Thomas Curran
Phosphate Removal And Recovery From Wastewater By Natural Materials For Ecologically Engineered Wastewater Treatment Systems, Daniel Thomas Curran
Graduate College Dissertations and Theses
Eutrophication due to excess loading of phosphorus (P) is a leading cause of water quality degradation within the United States. The aim of this study was to investigate P removal and recovery with 12 materials (four calcite varieties, wollastonite, dolomite, hydroxylapatite, eggshells, coral sands, biochar, and activated carbon. This was accomplished through a series of batch experiments with synthetic wastewater solutions ranging from 10-100 mg PO₄-P/ L. The results of this study were used to establish large-scale, calcite-based column filter experiments located in the Rubenstein School of Environment and Natural Resources' Eco-Machine. Influent and effluent wastewater samples were routinely collected …