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Potential Contamination Risk In Tennessee Aquifers From Oil And Gas Drilling, Emma Reed 2019 University of Tennessee

Potential Contamination Risk In Tennessee Aquifers From Oil And Gas Drilling, Emma Reed

University of Tennessee Honors Thesis Projects

No abstract provided.


Method Of Increasing Mass Transfer Rate Of Acid Gas Scrubbing Solvents, Joseph E. Remias, Cameron A. Lippert, Kunlei Liu 2019 University of Kentucky

Method Of Increasing Mass Transfer Rate Of Acid Gas Scrubbing Solvents, Joseph E. Remias, Cameron A. Lippert, Kunlei Liu

Center for Applied Energy Research Faculty Patents

A method of increasing the overall mass transfer rate of acid gas scrubbing solids is disclosed. Various catalyst compounds for that purpose are also disclosed.


Ecological Response Of Phytoplankton To The Oil Spills In The Oceans, Danling Tang, Jing Sun, Li Zhou, Sufen Wang, Ramesh P. Singh, Gang Pan 2019 Chinese Academy of Sciences

Ecological Response Of Phytoplankton To The Oil Spills In The Oceans, Danling Tang, Jing Sun, Li Zhou, Sufen Wang, Ramesh P. Singh, Gang Pan

Mathematics, Physics, and Computer Science Faculty Articles and Research

Oil spills in oceans have substantial influence on marine ecosystems. This study investigates 21 oil spills in the world. Analyzing Chlorophyll-a (Chl-a) from Moderate Resolution Imaging Spectroradiomerer (MODIS) data after Penglai oil spills on 4 June 2011, found a bloom with peak value of Chl-a (13.66 mg m−3) spread over an area of 800 km2 during 18–25 June 2011, and a pronounced increase in the monthly Chl-a concentration (6.40 mg m−3) on June 2012 in the Bohai Sea. Out of the 21 oil spills, 14 blooms were observed, while 11 ...


Understanding Greenhouse Gases, Julie M. Mueller, Laura Edwards, Madhav P. Nepal, Larry B. Browning, Matthew L. Miller, P. Troy White 2019 Garretson Public School, Garretson, South Dakota

Understanding Greenhouse Gases, Julie M. Mueller, Laura Edwards, Madhav P. Nepal, Larry B. Browning, Matthew L. Miller, P. Troy White

iLEARN Teaching Resources

Students will conduct hands-on experiments to see how greenhouse gases interact with the Earth’s atmosphere and how greenhouse gases affect temperature. This lesson introduces National Geographic’s Geo-Inquiry Process, where students will identify a Geo-inquiry question, collect data, and create a project around the answer to their question. Students will then present their findings to their peers and evaluate their Geo-Inquiry process.


Enhancing The Co-Utilization Of Biomass-Derived Mixed Sugars By Yeasts, Meirong Gao, Deon Ploessl, Zengyi Shao 2019 Iowa State University

Enhancing The Co-Utilization Of Biomass-Derived Mixed Sugars By Yeasts, Meirong Gao, Deon Ploessl, Zengyi Shao

Chemical and Biological Engineering Publications

Plant biomass is a promising carbon source for producing value-added chemicals, including transportation biofuels, polymer precursors, and various additives. Most engineered microbial hosts and a select group of wild-type species can metabolize mixed sugars including oligosaccharides, hexoses, and pentoses that are hydrolyzed from plant biomass. However, most of these microorganisms consume glucose preferentially to non-glucose sugars through mechanisms generally defined as carbon catabolite repression. The current lack of simultaneous mixed-sugar utilization limits achievable titers, yields, and productivities. Therefore, the development of microbial platforms capable of fermenting mixed sugars simultaneously from biomass hydrolysates is essential for economical industry-scale production, particularly for ...


Notes On The Gridlab-D Household Equivalent Thermal Parameter Model, Leigh Tesfatsion, Swathi Battula 2019 Iowa State University

Notes On The Gridlab-D Household Equivalent Thermal Parameter Model, Leigh Tesfatsion, Swathi Battula

Economics Working Papers

GridLab-D (GLD) is an agent-based platform, developed by researchers at Pacific Northwest National Laboratory, that permits users to accurately simulate the state dynamics of power distribution systems at time scales ranging from sub-seconds to years. The purpose of this study is to present, in careful comprehensive form, a complete analytical state-space control representation for a version of the GLD Household Equivalent Thermal Parameter Model as support documentation for model users. This model is a physically-based implementation of a household with multiple price-responsive and conventional appliances whose thermal dynamics are determined over successive days by resident appliance usage and external weather ...


Metabolic Engineering For Biocatalyst Robustness To Organic Inhibitors, Liam Royce, Laura R. Jarboe 2019 Iowa State University

Metabolic Engineering For Biocatalyst Robustness To Organic Inhibitors, Liam Royce, Laura R. Jarboe

Chemical and Biological Engineering Publications

Microbial production of biorenewable fuels and chemicals is often limited by inhibition of the biocatalyst, either by increasing concentrations of the product compound or by contaminant compounds in the biomass‐derived sugars. This inhibition can interfere with economically viable production. Here we discuss typical mechanisms of inhibition and methods for improving biocatalyst robustness. Inhibition often takes the form of inhibition of enzyme activity, depletion of cofactor pools, and membrane damage; methods are discussed for mitigating each of these types of inhibition. Various evolutionary schemes have been developed and implemented on a variety of inhibitory compounds, including butanol, acetic acid, furfural ...


Waste To Carbon: Influence Of Structural Modification On Voc Emission Kinetics From Stored Carbonized Refuse-Derived Fuel, Andrzej Białowiec, Monika Micuda, Antoni Szumny, Jacek Łyczko, Jacek A. Koziel 2019 Wrocław University of Environmental and Life Sciences

Waste To Carbon: Influence Of Structural Modification On Voc Emission Kinetics From Stored Carbonized Refuse-Derived Fuel, Andrzej Białowiec, Monika Micuda, Antoni Szumny, Jacek Łyczko, Jacek A. Koziel

Agricultural and Biosystems Engineering Publications

The torrefaction of municipal solid waste is one of the solutions related to the Waste to Carbon concept, where high-quality fuel—carbonized refuse-derived fuel (CRDF)—is produced. An identified potential problem is the emission of volatile organic compounds (VOCs) during CRDF storage. Kinetic emission parameters have not yet been determined. It was also shown that CRDF can be pelletized for energy densification and reduced volume during storage and transportation. Thus, our working hypothesis was that structural modification (via pelletization) might mitigate VOC emissions and influence emission kinetics during CRDF storage. Two scenarios of CRDF structural modification on VOC emission kinetics ...


Torrefaction Of Sewage Sludge: Kinetics And Fuel Properties Of Biochars, Jakub Pulka, Piotr Manczarski, Jacek A. Koziel, Andrzej Białowiec 2019 Poznan University of Life Sciences

Torrefaction Of Sewage Sludge: Kinetics And Fuel Properties Of Biochars, Jakub Pulka, Piotr Manczarski, Jacek A. Koziel, Andrzej Białowiec

Agricultural and Biosystems Engineering Publications

We propose a ‘Waste to Carbon’ thermal transformation of sewage sludge (SS) via torrefaction to a valuable product (fuel) with a high content of carbon. One important, technological aspect to develop this concept is the determination of activation energy needed for torrefaction. Thus, this research aimed to evaluate the kinetics of SS torrefaction and determine the effects of process temperature on fuel properties of torrefied products (biochars). Torrefaction was performed using high ash content SS at six (200~300 °C) temperatures and 60 min residence (process) time. Mass loss during torrefaction ranged from 10~20%. The resulting activation energy for ...


Call For Abstracts - Resrb 2019, July 8-9, Wrocław, Poland, Wojciech M. Budzianowski 2018 Wojciech Budzianowski Consulting Services

Call For Abstracts - Resrb 2019, July 8-9, Wrocław, Poland, Wojciech M. Budzianowski

Wojciech Budzianowski

No abstract provided.


Lift On E15 Ban: Should Nebraskan Farmers Be Cheering?, Samantha Wattier 2018 University of Nebraska-Lincoln

Lift On E15 Ban: Should Nebraskan Farmers Be Cheering?, Samantha Wattier

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

The common gasoline-ethanol mixture available at gas station pumps is 10% ethanol (E10). The Environmental Protection Agency had a ban on 15% ethanol (E15) during summer months. The news has been covering the talks of President Trump to lifting this summer ban and supporters in Iowa are excited.

Should Nebraska shout Hoorah, too? It is common knowledge Nebraska is better than Iowa. We should be excited, too, right?! NO.

Iowa has been tracking Fuel Revenue sales including those from ethanol blends and has been pushing for the E15 ban lift. Considering Iowa produces MORE corn and MORE ethanol than Nebraska ...


Looking At The True Costs Of Environmental Degradation, Zachery Sehnert 2018 University of Nebraska-Lincoln

Looking At The True Costs Of Environmental Degradation, Zachery Sehnert

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Progress is why we change, and innovation drives that progress. It is already very clear to scientists around the globe that our current framework for living is not sustainable. 97 percent of climate scientists are in consensus that there is a major threat to our ecosystem and action needs to be taken. Overpopulation, pollution, water scarcity, natural disasters, overfishing, deforestation are all issues that must be reevaluated with sustainability in mind. However only 49 percent of the general population share this belief, and even less, only 29 percent of CEOs are actively addressing climate change. The shortcoming for the general ...


“Renewable Energy Implementation”, William Newcomb 2018 University of Nebraska - Lincoln

“Renewable Energy Implementation”, William Newcomb

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Finding and providing ways to produce energy in an environmentally clean way is becoming a major push for countries all around the world today. Renewable energy provides a clean way to produce energy efficiently without using our planets non-renewable resources. Renewable energy has been growing substantially in the United States in the last decade and is making its way towards becoming a major energy production method. So, what is stopping the United States from implementing renewable energy production into our country at a mass scale?

There are many barriers that are keeping renewable energy from becoming a main source of ...


Nebraska’S Public Power Is Proof That Renewables Are (Literally) In The Public’S Best Interest, Jacob Monti 2018 University of Nebraska - Lincoln

Nebraska’S Public Power Is Proof That Renewables Are (Literally) In The Public’S Best Interest, Jacob Monti

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Nebraska is the only state that has every electric utility publicly owned. This gives Nebraska a unique advantage of serving its customers rather than out-of-state shareholders. Since the goal is cheap power instead of profit margins and keeping shareholders happy, Nebraska rates are 16.8% below the national average. (EIA.gov)

So what does that mean for Renewable sources of electricity if cheap power is the main focus? Does cheap but dirty coal reign supreme?

Some might think that’d be a death blow for Renewables. Renewables (wind, solar, and hydro-electric power) are expensive and not profitable, right? WRONG.

Renewables ...


Wave Energy In America, Chris Sukstorf 2018 University of Nebraska - Lincoln

Wave Energy In America, Chris Sukstorf

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

The United States has an untapped energy goldmine: our shores. According to the National Oceanic and Atmospheric Administration (NOAA), the United States his home to over 95,000 miles of shoreline. This shoreline is home to beaches, homes, and wildlife, but it could be home to more: wave energy.

Wave energy comes in many forms: some use the bobbing up and down motion of waves to generate energy in a similar motion of a piston; others store water during high tide and then release it during low tide like a dam. All said and done, the United States has the ...


Why Lincoln Needs To Get Ahead Of The Emerald Ash Borer Outbreak, Bryce Meyer 2018 University of Nebraska-Lincoln

Why Lincoln Needs To Get Ahead Of The Emerald Ash Borer Outbreak, Bryce Meyer

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

The emerald ash borer was recently sighted in Lincoln, Nebraska this August. This was to be expected as they were also located in Douglas and Cass county. The emerald ash borer has been making its way west from Michigan and has also been detected in 61 counties in Iowa.

The emerald ash borer is a metallic green colored beetle that feeds on green ash, black ash, blue ash, and white ash trees. The insect can kill up to 99% of the ash trees that they come in contact with. The beetle is native to north-eastern Asia and is considered an ...


“On-Bill Financing: A Bright Idea For Nebraska”, Lauren Taylor 2018 University of Nebraska-Lincoln

“On-Bill Financing: A Bright Idea For Nebraska”, Lauren Taylor

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

In over 29 states, a program called On-Bill Financing (OBF) is being utilized to improve the energy efficiency of homes and livelihoods of the people living in them. These programs have been implemented all over the country for many years, in states like Colorado, Hawaii, Iowa, and Michigan. According to the Environmental and Energy Study Institute (EESI), OBF has been wildly successful, reducing energy inefficiency, cutting energy bills, and improving the comfort of homes across the country with no upfront costs.

But what exactly is this mysterious money-saving program, and why hasn’t Nebraska tapped into it yet?

The Department ...


Social Change For A Global Problem, Isabella Catalano 2018 University of Nebraska - Lincoln

Social Change For A Global Problem, Isabella Catalano

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Recently, the United Nations' International Panel on Climate Change (IPCC) released a new report[1], warning us that storms are becoming more volatile, sea surface temperatures are getting higher, global environment as a whole growing less predictable: in other words, things are about to get a whole lot worse than we predicted.

Unless, of course, we do something about it. The IPCC recommends cutting CO2 emissions by 45% in order to curb just the worst of climate change's many effects.

There are a plethora of articles on the topic of just what, exactly, we as individuals can do ...


Recycling Just Got More Expensive. Can It Be Done Better?, Zachery Homolka 2018 University of Nebraska-Lincoln

Recycling Just Got More Expensive. Can It Be Done Better?, Zachery Homolka

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

There was a time in history that America led the world in recycling. In World War Two, Americans were asked to recycle tin, steel, paper, and rubber for the war effort. The University of Southern Carolina states that children were so eager to participate, they went door to door collecting recyclable scraps to turn in to be made into tanks, planes, and ammunition. Yet, in 2017 the National Geographic estimated about 91% of plastic produced globally has not been recycled and instead is landfilled or littered into the environment. America is no longer leading the recycling charge, the World Economic ...


Why The Endangered Species Act Shouldn’T Be Endangered, Ryan Kendall 2018 University of Nebraska-Lincoln

Why The Endangered Species Act Shouldn’T Be Endangered, Ryan Kendall

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

The Trump Administration has announced that they intend to rework the endangered species act. Unsurprisingly, they plan to rework in ways that have the potential to undermine its effectiveness.

One would think that reworking the act would potentially increase its effectiveness, given the nearly fifty years that we have had to advance our knowledge since it was passed. Unfortunately, the opposite may very well be true.

The new changes to the act would allow for the decision of whether or not to list an animal to be made not just by scientific data, but also by determining the economic impact ...


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