Energy Resources Program Home
Energy Newsroom

Energy News and Current Publications

Press Releases, Technical Announcements, Publications, Field Reports, and Science Highlights.

 
 

Wednesday, February 28, 2018

Distribution of rare earth elements in coal combustion fly ash, determined by SHRIMP-RG ion microprobe

Outside Publication: International Journal of Coal Geology
During coal combustion for electric power generation, rare earth elements (REE) are strongly retained in the ash fraction leading to significant enrichment compared to the REE content of the respective feed coals. Knowing how the REE are distributed in coal ash...

Wednesday, January 18, 2017

Notes on the origin of copromacrinite based on nitrogen functionalities and δ13C and δ15N determined on samples from the Peach Orchard coal bed, southern Magoffin County, Kentucky

Outside Publication: International Journal of Coal Geology
This paper represents the first attempt to show, by means other than just petrographic ones, that one type of macrinite, herein designated copromacrinite, may result from macrofauna feces. For that purpose a combination of coal petrography, X-ray photoelectron spectroscopy, and...

Wednesday, June 29, 2016

Carbon and oxygen isotopic composition of coal and carbon dioxide derived from laboratory coal combustion: A preliminary study

Outside Publication: International Journal of Coal Geology
The concentration of carbon dioxide (CO2) in the atmosphere has dramatically increased from the start of the industrial revolution in the mid-1700s to present levels exceeding 400 ppm. Carbon dioxide derived from fossil fuel combustion is a greenhouse gas and a major contributor to...

Monday, May 09, 2016

Mercury in U.S. Coal—Priorities for New U.S. Geological Survey Studies

USGS Publication: Open-File Report 2016-1033
In 2011, the U.S. Environmental Protection Agency (EPA) introduced emissions standards, known as Mercury and Air Toxics Standards (MATS), for a range of toxic constituents from coal-fired utility power stations and other combustion sources. This report presents the findings of an expert panel convened in September 2014 to assess the role of the U.S. Geological Survey (USGS) in new coal investigations that would be useful to stakeholders under MATS...

Monday, February 29, 2016

Mercury and trace element distribution in density separates of a South African Highveld (#4) coal: Implications for mercury reduction and preparation of export coal (2016)

Outside Publication: International Journal of Coal Geology

Eight density separates of Permian Highveld (#4) coal were investigated for partitioning of Hg and trace elements. The separates include float fractions obtained in heavy media having densities of 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, and 2.0 g/cm3, and the sink fraction for 2.0 g/cm3...


Tuesday, December 22, 2015

The U.S. Geological Survey coal quality (COALQUAL) database version 3.0

USGS Publication: Data Series 975

Since the mid-1970s, the U.S. Geological Survey (USGS) has maintained a coal quality database of national scope named USCHEM, which currently contains data for over 13,000 samples. A subset of the USCHEM database called COALQUAL Version 1.3 was initially published in 1994 and was followed by Version 2.0 in 1997...


Wednesday, December 02, 2015

Mapping of coal quality using stochastic simulation and isometric logratio transformation with an application to a Texas lignite

Outside Publication: International Journal of Coal Geology
Coal is a chemically complex commodity that often contains most of the natural elements in the periodic table. Coal constituents are conventionally grouped into four components (proximate analysis): fixed carbon, ash, inherent moisture, and volatile matter.

Thursday, October 22, 2015

Radiometric dating of marine-influenced coal using Re–Os geochronology

Outside Publication: Earth and Planetary Science Letters
Coal deposits are integral to understanding the structural evolution and thermal history of sedimentary basins and correlating contemporeous estuarine and fluvial delatic strata with marine sections. While marine shales may readily lend themselves to Re–Os dating due to the dominance of hydrogenous Re and Os, the lack of a chronometer for near-shore sedimentary environments hampers basinwide correlations in absolute time.

Thursday, March 19, 2015

Structural degradation of Thar lignite using MW1 fungal isolate: Optimization studies

Outside Publication: International Biodeterioration & Biodegradation
Biological degradation of low-rank coals, particularly degradation mediated by fungi, can play an important role in helping us to utilize neglected lignite resources for both fuel and non-fuel applications. Fungal degradation of low-rank coals has already been investigated for the extraction of soil-conditioning agents and the substrates, which could be subjected to subsequent processing for the generation of alternative fuel options, like methane...


1234

Categories

Archive

Tags

AAPG9 Acid Mine Drainage4 Afghanistan4 Alabama2 Alaska33 Alaska North Slope14 Anadarko Basin4 Appalachian Basin32 Arctic27 Arizona4 Arkoma Basin3 Assessments185 Bakken7 Bangladesh1 Barnett Shale4 Bighorn Basin2 Biofuels2 Biology2 Bitumen3 California7 CCPs1 China8 Coal65 Coal Fires3 Coal Quality29 Coal Reserves8 Coal Resources17 Coalbed Gas8 Coalbed Methane20 Coastal Erosion1 Colorado29 Colorado Plateau16 Continuous Gas50 Continuous Oil46 Conventional51 Cook Inlet4 Core Samples5 Crude Oil3 Devonian shale7 Eagle Ford3 East Coast Mesozoic Basins1 Economics22 Environment Aspects52 Environmental Health56 Erosion2 Fischer Assay4 Florida1 Gas Hydrates28 geochemistry69 Geologic Carbon Sequestration61 Geologic Maps2 Geology38 Geophysics17 Geostatistics5 Geothermal4 Gillette Coal Field1 GIS9 Greater Green River Basin16 green river6 Gulf Coast Basins22 Gulf of Mexico23 Helium1 Human Health15 Hydraulic Fracturing10 Idaho3 Illinois6 India5 Indonesia3 In-Place7 International81 Kansas4 Kentucky9 Lab Updates1 Laboratories15 Louisiana9 Marcellus Shale11 Maryland2 Mercury15 Methodology41 Michigan1 Microbial Methane6 Montana18 National Oil & Gas Assessment73 natural gas5 Navajo1 Nevada1 New Mexico8 Niobrara1 North Dakota6 NPRA6 Ohio5 Oil and Gas196 Oil and Gas Maps7 Oil Shale27 Oklahoma5 Organic Petrology12 Outer Continental Shelf1 Pakistan1 Peat1 Pennsylvania9 Permian Basin11 Petroleum35 Phosphorus1 Photomicrographs1 Piceance Basin18 Powder River Basin17 Produced Waters33 Puerto Rico2 Renewable Energy2 Reserve Growth8 Russia14 Sagebrush1 San Joaquin Basin3 Seismic8 Selenium7 Sequestration31 Shale2 Shale Gas43 Shale Oil26 Solar1 South Dakota3 Southwestern Wyoming (WLCI)8 stratigraphy8 Sumatra3 Tennessee3 Texas26 thermal maturation10 Tight-Gas3 Uinta Basin7 Unconventional Oil20 Underpressure1 Uranium18 USA93 Utah14 Utica Shale3 Virginia7 West Virginia8 Wind Impacts5 Wind River Basin1 Woodford Play3 World Coal Quality Inventory18 World Petroleum Assessment80 Wyoming40

 

Page Last Modified: Wednesday, December 03, 2014