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Articles 1 - 30 of 216

Full-Text Articles in Oil, Gas, and Energy

Energy Input-Output Meta-Analysis Reveals Algal Diesel Struggles To Break Even (Supplemental Information), Michelle Arnold Nov 2025

Energy Input-Output Meta-Analysis Reveals Algal Diesel Struggles To Break Even (Supplemental Information), Michelle Arnold

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  1. Algal biofuels have been investigated as an alternative to traditional fossil fuels for transportation in the United States since the 1970s. Yet after five decades of development, scalability and implementation remain limited. To evaluate the state of progress, this study harmonized energy inputs and outputs across 39 papers, encompassing 508 observations on the production of algal biofuel energy return on energy investment (EROEI) in the United States. The analysis produced a mean EROEI of 1.01—essentially the break-even point—irrespective of system boundaries. This is lower than bioethanol (2.8) and far below oil (8.7). Life-cycle analysis results showed that hydrothermal liquefaction in …


Increasing Complexity Leads To Declining Productivity Of Innovation In The Algal Biofuel Industry (Supplemental Information), Michelle Arnold Nov 2025

Increasing Complexity Leads To Declining Productivity Of Innovation In The Algal Biofuel Industry (Supplemental Information), Michelle Arnold

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Liquid biofuels are widely promoted as renewable, lower-emission alternatives to fossil fuels. Yet despite their promise, this sector faces a critical constraint: a long-term decline in the productivity of innovation. This decline—measured by a decreasing number of patents per inventor—suggests that generating technological breakthroughs is becoming more difficult, expensive, and uncertain. As innovation becomes more resource-intensive, the feasibility of replacing petroleum with liquid biofuels grows more tenuous. This is especially problematic given the pre-existing technical disadvantages of biofuels, including their relatively low energy return on energy investment (EROEI) and energy density compared to fossil fuels. Our findings show that the …


Removal Of Selenium And Heavy Metals From Coal Combustion Residuals Wastewater Using Surface Modified Iron Based Media, Madan Tandukar, Alex Korff, Andrew Vincent, Chris Hardin Aug 2022

Removal Of Selenium And Heavy Metals From Coal Combustion Residuals Wastewater Using Surface Modified Iron Based Media, Madan Tandukar, Alex Korff, Andrew Vincent, Chris Hardin

World of Coal Ash Proceedings

No abstract provided.


Cqa - A Common Sense Approach At Becoming The Mvp On Your Next Project, James Price, Michael Fisher, John Metcalf May 2022

Cqa - A Common Sense Approach At Becoming The Mvp On Your Next Project, James Price, Michael Fisher, John Metcalf

World of Coal Ash Proceedings

No abstract provided.


Hybrid Closure Approach: Constructing Bidding Lessons Learned, Brian Harthun, P.E. May 2022

Hybrid Closure Approach: Constructing Bidding Lessons Learned, Brian Harthun, P.E.

World of Coal Ash Proceedings

No abstract provided.


Groundwater Compliance & Strategy Insights For Ccr Rule Stakeholders, Sheryl Smith, Mark Johnson May 2022

Groundwater Compliance & Strategy Insights For Ccr Rule Stakeholders, Sheryl Smith, Mark Johnson

World of Coal Ash Proceedings

No abstract provided.


Ecological Risk Assessment For Coal Combustion Residuals And Herrington Lake Adjacent To The Kentucky Utilities E.W. Brown Generating Station, Mary Sorensen, Alex Smith, Mark Nielsen May 2022

Ecological Risk Assessment For Coal Combustion Residuals And Herrington Lake Adjacent To The Kentucky Utilities E.W. Brown Generating Station, Mary Sorensen, Alex Smith, Mark Nielsen

World of Coal Ash Proceedings

No abstract provided.


Epri Research On Groundwater-Surface Water Interactions Near Coal Combustion Product Sites, Bruce Hensel, Jeff Thomas, Tim Towey, Anthony Aufdenkampe May 2022

Epri Research On Groundwater-Surface Water Interactions Near Coal Combustion Product Sites, Bruce Hensel, Jeff Thomas, Tim Towey, Anthony Aufdenkampe

World of Coal Ash Proceedings

No abstract provided.


State Of The Practice For Compaction Quality Of Dry Stack Ccr Storage Facilities, Bruce Cunningham, Pavana Vennapusa, David J. White, Robert Eric Hageman May 2022

State Of The Practice For Compaction Quality Of Dry Stack Ccr Storage Facilities, Bruce Cunningham, Pavana Vennapusa, David J. White, Robert Eric Hageman

World of Coal Ash Proceedings

No abstract provided.


Monitoring Well Integrity And Performance Part Ii - Seeing The Benefits, Bryan R. Hansen, Jacob G. Gruzalski, Thomas S. Dicken, Rock J. Vitale May 2022

Monitoring Well Integrity And Performance Part Ii - Seeing The Benefits, Bryan R. Hansen, Jacob G. Gruzalski, Thomas S. Dicken, Rock J. Vitale

World of Coal Ash Proceedings

No abstract provided.


Ccr Landfill Construction & Operation Under Subtitle D, Thomas R. Gredell May 2022

Ccr Landfill Construction & Operation Under Subtitle D, Thomas R. Gredell

World of Coal Ash Proceedings

No abstract provided.


Use Of A Net Environmental Benefit Analysis To Evaluate Remedial Options To Address Coal Ash – Case Studies, Joseph Nicolette, Michael Rockel May 2022

Use Of A Net Environmental Benefit Analysis To Evaluate Remedial Options To Address Coal Ash – Case Studies, Joseph Nicolette, Michael Rockel

World of Coal Ash Proceedings

No abstract provided.


Hybrid Closure Approach: Design Investigation Review, Brian Sperrazza, P.E., P.G. May 2022

Hybrid Closure Approach: Design Investigation Review, Brian Sperrazza, P.E., P.G.

World of Coal Ash Proceedings

No abstract provided.


Use Of Tritium-Helium Isotopes For Vertical Delineation Of Ccr Constituents In Groundwater, Lane Dorman, Lauren Fitzgerald, Ryan Fimmen, Robert Trey Singleton May 2022

Use Of Tritium-Helium Isotopes For Vertical Delineation Of Ccr Constituents In Groundwater, Lane Dorman, Lauren Fitzgerald, Ryan Fimmen, Robert Trey Singleton

World of Coal Ash Proceedings

No abstract provided.


Construction Risk Management Considerations For Ccr Surface Impoundment Closures, John P. Seymour, Chris Robb May 2022

Construction Risk Management Considerations For Ccr Surface Impoundment Closures, John P. Seymour, Chris Robb

World of Coal Ash Proceedings

No abstract provided.


Building Defensibility For Mna Remedy Selection, Michael Healey, Jeff Roberts, Sarah Cronk, Andrzej Przepiora May 2022

Building Defensibility For Mna Remedy Selection, Michael Healey, Jeff Roberts, Sarah Cronk, Andrzej Przepiora

World of Coal Ash Proceedings

No abstract provided.


Using Shear Wave Velocity Measurements To Identify Cemented Ccr, Andrew Fuggle, Longde Jin, Haley Roberts May 2022

Using Shear Wave Velocity Measurements To Identify Cemented Ccr, Andrew Fuggle, Longde Jin, Haley Roberts

World of Coal Ash Proceedings

No abstract provided.


Wind Performance Evaluation Of Engineered Turf Final Cover And Exposed Geomembrane, Ming Zhu, Bryan Scholl May 2022

Wind Performance Evaluation Of Engineered Turf Final Cover And Exposed Geomembrane, Ming Zhu, Bryan Scholl

World of Coal Ash Proceedings

No abstract provided.


Hybrid Closure Approach: Project Summary, Glenn Leo, P.E. May 2022

Hybrid Closure Approach: Project Summary, Glenn Leo, P.E.

World of Coal Ash Proceedings

No abstract provided.


Chemical Compatibility And Hydraulic Performance Of Lightweight Polymer Modified Gcls, Michael S. Donovan, Barbara Gebka, Dennis Wind, Reza Gorakhki May 2022

Chemical Compatibility And Hydraulic Performance Of Lightweight Polymer Modified Gcls, Michael S. Donovan, Barbara Gebka, Dennis Wind, Reza Gorakhki

World of Coal Ash Proceedings

No abstract provided.


Using Human Health And Ecological Risk Assessment At Coal Combustion Product (Ccp) Sites To Meet Closure Objectives, Ari S. Lewis, Andrew B. Bittner, Kathleen R. Radloff May 2022

Using Human Health And Ecological Risk Assessment At Coal Combustion Product (Ccp) Sites To Meet Closure Objectives, Ari S. Lewis, Andrew B. Bittner, Kathleen R. Radloff

World of Coal Ash Proceedings

No abstract provided.


Future Management & Treatment Of Non-Ccr Waste Streams At Midwest Coal-Fired Power Plants With Case Studies, Jason Pokorny, Lee W. Saunders May 2022

Future Management & Treatment Of Non-Ccr Waste Streams At Midwest Coal-Fired Power Plants With Case Studies, Jason Pokorny, Lee W. Saunders

World of Coal Ash Proceedings

No abstract provided.


Illinois Epa 35 Ill Adm Code 845: Elevating The Standard Of Care For Ccr Impoundments, Ronald Hager, Matthew Ballance, Victor Modeer May 2022

Illinois Epa 35 Ill Adm Code 845: Elevating The Standard Of Care For Ccr Impoundments, Ronald Hager, Matthew Ballance, Victor Modeer

World of Coal Ash Proceedings

No abstract provided.


Real-Time Water Quality Monitoring For Successful Ccr Unit Closure, Joseph Kamalesh, John Watrous, Richard Shook May 2022

Real-Time Water Quality Monitoring For Successful Ccr Unit Closure, Joseph Kamalesh, John Watrous, Richard Shook

World of Coal Ash Proceedings

No abstract provided.


Ccr Lmpoundment Closure - Refined Lmplementation Strategies To Enhance Safety And Reduce Closure Cost, Matt Vaughan, Don Fuller May 2022

Ccr Lmpoundment Closure - Refined Lmplementation Strategies To Enhance Safety And Reduce Closure Cost, Matt Vaughan, Don Fuller

World of Coal Ash Proceedings

No abstract provided.


Comparing Cover Systems For Sustainable And Resilient Coal Ash Closures, Marc S. Theisen May 2022

Comparing Cover Systems For Sustainable And Resilient Coal Ash Closures, Marc S. Theisen

World of Coal Ash Proceedings

No abstract provided.


Cost Effective Approach To Drying Saturated Coal Combustion Residuals (Ccrs) With Superabsorbent Polymers, Whit Rawls, Christopher D. Hardin May 2022

Cost Effective Approach To Drying Saturated Coal Combustion Residuals (Ccrs) With Superabsorbent Polymers, Whit Rawls, Christopher D. Hardin

World of Coal Ash Proceedings

No abstract provided.


Hydraulic Conductivity Of Geosynthetic Clay Liner To Leachate From Coal Combustion Products, Kuo Tian May 2022

Hydraulic Conductivity Of Geosynthetic Clay Liner To Leachate From Coal Combustion Products, Kuo Tian

World of Coal Ash Proceedings

No abstract provided.


Establishing Mna For Inorganics Using Multiple Analysis Techniques, Margaret Gentile May 2022

Establishing Mna For Inorganics Using Multiple Analysis Techniques, Margaret Gentile

World of Coal Ash Proceedings

No abstract provided.


Removal Of Boron And Bromide From Coal Combustion Residual Wastewater By Precipitation And Filtration, Valentine Nzengung, William Crumpacker, Lucas Novello Favero May 2022

Removal Of Boron And Bromide From Coal Combustion Residual Wastewater By Precipitation And Filtration, Valentine Nzengung, William Crumpacker, Lucas Novello Favero

World of Coal Ash Proceedings

No abstract provided.