@prefix dcat: . @prefix dct: . @prefix foaf: . @prefix xsd: . a dcat:Dataset ; dct:description "Presentations related to REE" ; dct:identifier "1ea0b312-5460-4efa-b1cd-04d71a50f9f1" ; dct:issued "2025-11-25T21:16:12.966432"^^xsd:dateTime ; dct:modified "2025-11-25T21:16:12.966436"^^xsd:dateTime ; dct:publisher ; dct:title "NETL REE Publications/Presentations" ; dcat:distribution , , ; dcat:keyword "amerigeo", "amerigeoss", "ckan", "edx", "energy", "energy-data-exchange", "geo", "geoss", "global", "netl", "presentations", "ree", "resource" . a dcat:Distribution ; dct:description "The feasibility of using laser separation for rare earth recovery from coal ashes was explored. To do so, laser-induced motion and travel distances of some rare earth and rare earth oxides (Lu2O3, Yb2O3, HfO2, Dy2O3, Ta2O5, Tm, Lu, Ho, TeO2, La2O3, Ho, TiO2, Fe2O3 Y2O3, GeO2, Sc2O3) and mineral compounds (MgO, CaO, Al2O3, SiO2, KCl) that are commonly found is coal ashes were numerically investigated. The investigations were carried out for particles in quiescent air, (T = 300 K, μ = 18.46 × 10−6 N s/m2, ρ = 1.177 kg/m3) exposing to a CW laser beam of 6 mm in diameter and it was focused by a 500 mm focal length lens. The results showed that the separation distances between these elements varied from few micrometers to several millimeters and it became widened as the laser power increased. The important result presented here is that all rare earth oxides were separated and concentrated in a small area located near the beam waist while all other mineral compounds traveled further and concentrated in a small area far from the beam waist. " ; dct:issued "2015-09-28T16:46:16.003520"^^xsd:dateTime ; dct:modified "2025-11-25T21:16:12.957584"^^xsd:dateTime ; dct:title "Tran X. Phuoc, Ping Wang, and Dustin McIntyre, “Discovering the feasibility of using the radiation forces for recovering rare earth elements from coal power plant by-products” Advanced Powder Technology, 26 (2015) 1465-1472" ; dcat:accessURL . a dcat:Distribution ; dct:description """This presentation was given at the Rare Earth Element's Funding Opportunity Announcement webinar on 7/22/2015.\r """ ; dct:format "PDF" ; dct:issued "2015-07-24T08:42:33.348036"^^xsd:dateTime ; dct:modified "2025-11-25T21:16:12.957153"^^xsd:dateTime ; dct:title "Coal and Coal Byproducts with Elevated Rare Concentrations - Background Information and Useful Places to Look 7/22/2015" ; dcat:accessURL ; dcat:byteSize "1960600"^^xsd:nonNegativeInteger . a dcat:Distribution ; dct:description "Although coal ash has been identified as a potential source for rare earth production, it still remains as an untapped resource. This is because data on concentrations of trace rare earth elements in various coal ash wastes are not available. We will report here, therefore, our results on the use of laser-induced breakdown spectroscopy to analyze the rare earth elements contained in ash samples from power River Basin sub-bituminous coal (PRB-coal). The pulse intensity of about 14.5 GW/cm2 was used. Emission lines from the laser spark was analyzed using a spectrometer that can record a spectrum across the 200-980 nm range at a resolution of approximately 0.1 nm (FWHM). Ash was prepared by drying and burning PRB-coal powder of about 150 µm in a TGA at 750 degrees C. until the weight of the remaining ash became unchanged. The ash samples for LIBS experiments were made in the form of pellets by compressing about 1.5 grams of ash in a pellet die with a pressure Of 15000 psi for 5 minutes. We have identified many elements in the Lanthanide series (cerium, europium, holmium, lanthanum, lutetium, praseodymium, promethium, samarium, terbium, ytterbium) and some elements in the actinide series (actinium, thorium, uranium, plutonium, berkelium, californium) in the ash samples. In addition, various metals were also seen to present 'n the ash samples. Procedures for quantifying their concentrations were briefly presented." ; dct:issued "2015-09-28T16:47:29.452912"^^xsd:dateTime ; dct:modified "2025-11-25T21:16:12.958177"^^xsd:dateTime ; dct:title "Tran X. Phuoc, Ping Wang, and Dustin McIntyre, “Profiling rare earth elements in Power River Basin sub-bituminous coal ash using laser-induced breakdown spectroscopy (LIBS),” 2015 World of Coal Ash Conference (WOCA), Nashville, TN May 5-7, 2015" ; dcat:accessURL . a foaf:Agent ; foaf:name "Energy Data Exchange" .