Granted Patent
B2
US 12,515,992 · App. 18/828,783 · Granted Jan 6, 2026
Lime-based cement extender compositions, and associated systems and methods
Inventors:
Nikolas Andrei Romaniuk (Edmonton, CA); Michael John Tate (Oregon, OH); Narain Hariharan (South Jordan, UT); Jared Ira Leikam (West Jordan, UT); Katherine Hyman (Salt Lake City, UT); Lucas McFarlane (Salt Lake City, UT); Joseph Lewis (Salt Lake City, UT)
Assignee:
GRAYMONT WESTERN CANADA INC.
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Abstract
A composition configured to be mixed with cement, and associated systems and methods are disclosed herein. In some embodiments, the composition includes at least 10% by weight lime particles, and at least 35% by weight pozzolan particles. Properties of the composition can include a magnesium oxide concentration of at least 0.5%, and an iron oxide concentration of at least 0.5-2.0%, an aluminum oxide concentration of 2-8%, a silicon dioxide concentration of 20-40%, a potassium oxide concentration of 20,000-30,000 ppm, and a sodium oxide concentration of 10,000-20,000 ppm. In some embodiments, the lime-based cement extender composition, or product, is combined with cement to produce a cement blend for use in the mining industry as mine backfill.
Claims (46)
1 . A composition, comprising:
between 25-40% by weight calcium oxide; and
pozzolan including silicon dioxide, aluminum oxide, and iron oxide,
wherein the silicon dioxide forms at least 40% by weight of the composition,
wherein the aluminum oxide forms at least 2% by weight of the composition, and
wherein the silicon dioxide, the aluminum oxide, and the iron oxide together form at least 60% by weight of the composition.
2 . The composition of claim 1 , wherein the silicon dioxide forms between 40-50% by weight of the composition.
3 . The composition of claim 1 , wherein the pozzolan forms between 45-70% by weight of the composition.
4 . The composition of claim 1 , further comprising a magnesium oxide concentration of at least 0.5% by weight of the composition.
5 . The composition of claim 1 , wherein the iron oxide forms at least 0.5% by weight of the composition.
6 . A composition, comprising:
between 25-40% by weight calcium oxide;
a sodium oxide concentration of at least 1% by weight of the composition; and
pozzolan including silicon dioxide, aluminum oxide, and iron oxide,
wherein the silicon dioxide forms at least 40% by weight of the composition, and
wherein the silicon dioxide, the aluminum oxide, and the iron oxide together form at least 60% by weight of the composition.
7 . The composition of claim 6 , wherein the sodium oxide concentration is between 1-3% by weight of the composition.
8 . A composition, comprising:
between 30-35% by weight calcium oxide; and
pozzolan including silicon dioxide aluminum oxide and iron oxide,
wherein the silicon dioxide forms at least 40% by weight of the composition, and
wherein the silicon dioxide, the aluminum oxide, and the iron oxide together form at least 60% by weight of the composition.
9 . A composition, comprising:
at least 25% by weight calcium oxide;
between 45-70% by weight pozzolan, wherein the pozzolan includes silicon dioxide forming between 40-50% by weight of the composition; and
an aluminum oxide concentration of at least 2% by weight of the composition.
10 . The composition of claim 9 , wherein the calcium oxide forms between 25% by weight of the composition.
11 . A composition, comprising:
at least 25% by weight calcium oxide;
a sodium oxide concentration of at least 1% by weight of the composition; and
between 45-70% by weight pozzolan, wherein the pozzolan includes silicon dioxide forming between 40-50% by weight of the composition.
12 . The composition of claim 11 , wherein the sodium oxide concentration is between 1-3% by weight of the composition.
13 . A composition, comprising:
at least 25% by weight calcium oxide;
a magnesium oxide concentration of at least 0.5% by weight of the composition; and
between 45-70% by weight pozzolan, wherein the pozzolan includes silicon dioxide forming between 40-50% by weight of the composition.
14 . A composition, comprising:
at least 25% by weight calcium oxide;
an iron oxide concentration of at least 0.5% by weight of the composition, and
between 45-70% by weight pozzolan wherein the pozzolan includes silicon dioxide forming between 40-50% by weight of the composition.
15 . A composition, comprising:
at least 25% by weight calcium oxide;
between 45-70% by weight pozzolan, wherein the pozzolan includes silicon dioxide forming between 40-50% by weight of the composition;
aluminum oxide, and
iron oxide,
wherein a sum of the silicon dioxide, the aluminum oxide, and the iron oxide comprises at least 60% by weight of the composition.
Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Sep 30, 2025
From: ROMANIUK, NIKOLAS ANDREI; TATE, MICHAEL JOHN; HARIHARAN, NARAIN; LEIKAM, JARED IRA; HYMAN, KATHERINE; MCFARLANE, LUCAS; LEWIS, JOSEPH
To: GRAYMONT WESTERN CANADA INC.
Reel/Frame 072416/0321 →
Continuity (4)
Provisional Application
63293513
· Dec 23, 2021
References Cited (197)
US 2669542A
· Dooley
· 1954
[cited by applicant]
US 3074860A
· Shinzoh
· 1963
[cited by applicant]
US 3861928A
· Slater
· 1975
[cited by applicant]
US 4196068A
· Scoville
· 1980
[cited by applicant]
US 5549859A
· Anderson
· 1996
[cited by applicant]
US 5584926A
· Borgholm et al.
· 1996
[cited by applicant]
US 5853685A
· Erickson
· 1998
[cited by applicant]
US 7534411B2
· Shapira et al.
· 2009
[cited by applicant]
US 7799128B2
· Guynn et al.
· 2010
[cited by applicant]
US 7972432B2
· Guynn et al.
· 2011
[cited by applicant]
US 8323399B2
· Guynn et al.
· 2012
[cited by applicant]
US 8377201B2
· Guynn et al.
· 2013
[cited by applicant]
US 8414700B2
· Guynn et al.
· 2013
[cited by applicant]
US 8551245B2
· Guynn et al.
· 2013
[cited by applicant]
US 8974593B2
· Guynn et al.
· 2015
[cited by applicant]
US 9067824B1
· Hansen et al.
· 2015
[cited by applicant]
US 9102567B1
· Hansen et al.
· 2015
[cited by applicant]
US 9238591B2
· Guynn et al.
· 2016
[cited by applicant]
US 9272953B2
· Guynn et al.
· 2016
[cited by applicant]
US 9561983B2
· Thomas et al.
· 2017
[cited by applicant]
US 9611174B2
· Thomas et al.
· 2017
[cited by applicant]
US 9718731B2
· Bullerjahn et al.
· 2017
[cited by applicant]
US 9868844B2
· McAfee et al.
· 2018
[cited by applicant]
US 9957196B1
· Guynn
· 2018
[cited by applicant]
US RE49415E
· Guynn et al.
· 2023
[cited by applicant]
US 20040187740A1
· Timmons
· 2004
[cited by examiner]
US 20080124269A1
· Daudey
· 2008
[cited by applicant]
US 20080245660A1
· Little et al.
· 2008
[cited by applicant]
US 20100101955A1
· Nocera et al.
· 2010
[cited by applicant]
US 20110044882A1
· Buckley et al.
· 2011
[cited by applicant]
US 20120145046A1
· Hansen et al.
· 2012
[cited by applicant]
US 20160137551A1
· Le Gouil et al.
· 2016
[cited by applicant]
US 20180037501A1
· Guynn et al.
· 2018
[cited by applicant]
US 20180251403A1
· Boehringer et al.
· 2018
[cited by applicant]
US 20180305254A1
· Ben Haha
· 2018
[cited by applicant]
US 20210094879A1
· Masic et al.
· 2021
[cited by applicant]
US 20220064063A1
· Chiang et al.
· 2022
[cited by applicant]
US 20220106227A1
· Guynn et al.
· 2022
[cited by applicant]
US 20220145477A1
· Chiang et al.
· 2022
[cited by applicant]
US 20230174396A1
· Chiang et al.
· 2023
[cited by applicant]
US 20230271882A1
· Sperry, III
· 2023
[cited by applicant]
US 20230313386A1
· Ellis et al.
· 2023
[cited by applicant]
US 20230330724A1
· Chiang
· 2023
[cited by applicant]
US 20240253098A1
· Thomas et al.
· 2024
[cited by applicant]
US 20250178959A1
· Thomas et al.
· 2025
[cited by applicant]
CN 108117356A
· 2018
[cited by applicant]
CN 112225501A
· 2021
[cited by examiner]
CN 113149542A
· 2021
[cited by examiner]
CN 214183391U
· 2021
[cited by applicant]
EP 0640062B1
· 1996
[cited by applicant]
EP 2816140A1
· 2014
[cited by applicant]
FR 2885928A1
· 2006
[cited by examiner]
GB 1008196A
· 1965
[cited by applicant]
GB 2638122A
· 2025
[cited by applicant]
GB 2639713A
· 2025
[cited by applicant]
JP 4796225B2
· 2011
[cited by examiner]
KR 102013073025A
· 2013
[cited by examiner]
KR 102017009060A
· 2017
[cited by examiner]
KR 101935491B1
· 2018
[cited by examiner]
KR 2019004791W
· 2019
[cited by applicant]
KR 20190047911A
· 2019
[cited by applicant]
MX 2015017701A1
· 2017
[cited by applicant]
WO 2008124538A1
· 2008
[cited by applicant]
WO 2012142547A1
· 2012
[cited by applicant]
WO 2014142547A1
· 2014
[cited by applicant]
WO 2018078672A1
· 2018
[cited by applicant]
WO 2018087697A1
· 2018
[cited by applicant]
WO 2019133702A1
· 2019
[cited by applicant]
WO WO2020028292A1
· 2020
[cited by examiner]
WO 2020150449A1
· 2020
[cited by applicant]
WO 2020186178A1
· 2020
[cited by applicant]
WO 2021030529A1
· 2021
[cited by applicant]
WO 2021222585A1
· 2021
[cited by applicant]
WO 2022020470A1
· 2022
[cited by applicant]
WO 2022020572A1
· 2022
[cited by applicant]
WO 2022204059A1
· 2022
[cited by applicant]
WO 2022216741A1
· 2022
[cited by applicant]
WO 2022221334A1
· 2022
[cited by applicant]
WO 2023108054A1
· 2023
[cited by applicant]
WO 2023150796A1
· 2023
[cited by applicant]
WO 2023250495A1
· 2023
[cited by applicant]
WO 2024059557A1
· 2024
[cited by applicant]
WO 2025125579A1
· 2025
[cited by applicant]
Moustafa et al “Studying the Mechanical Properties of Rigid Pavement Reinforced with Single and Hybrid Fibers”, Civil Engineering and Architecture 9(6): 1877-1899, http://www.hrpub.org DOI: 10.13189/cea.2021.090620 (Yea…
[cited by examiner]
Mujumdar et al., Rotary Cement Kiln Simulator (RoCKS): Integrated modeling of pre-heater, calciner, kiln and clinker cooler. Chemical Engineering Science. 2007;62(9):2590-607. Epub Feb. 14, 2007.**.
[cited by applicant]
Odler et al., Polymorphism and Hydration of Silicate Silicate Doped With ZnO. Journal of the American Ceramic Society. Jan. 1983;66(1):I-4.**.
[cited by applicant]
Rau (2009). “Electrochemical CO2 capture and storage with hydrogen generation,” Energy Procedia 1: 823-828.**.
[cited by applicant]
Rau, “Electrochemical Splitting of Calcium Carbonate to Increase Solution Alkalinity: Implications for Mitigation of Carbon Dioxide and Ocean Acidity,” Environ. Sci. Technol.; vol. 42; 2008; pp. 8935-8940**.
[cited by applicant]
Rau, CO2 Mitigation via Capture and Chemical Conversion in Seawater. Environ. Sci. Technol. 2011 ;45(3):1088-1092.**.
[cited by applicant]
Schmidt et al., Future cost and performance of water electrolysis: An expert elicitation study. International Journal of Hydrogen Energy. Nov. 22, 2017;42(52):30470-92.**.
[cited by applicant]
Stevula et al., Hydration of Polymorphic Modification C3S. Cement and Concrete Research. 1981;11(2): 183-190**.
[cited by applicant]
Sutkovic. (2014). “Ionic Chemical Equations,” retrieved from the internet on Mar. 6, 2024 from <https://www.ius.edu.ba/common/ 2014SpringChemistryProblemSample1.pdf> 3 pages.**.
[cited by applicant]
Syc et al., Metal recovery from incineration bottom ash: State-of-the-art and recent developments. J Hazard Mater. Jul. 5, 2020;393:1-17. Epub Feb. 29, 2020.**.
[cited by applicant]
Taylor, Cement chemistry, 2nd edition. 1997. Thomas Telford Publishing. London, UK. 470 pages.**.
[cited by applicant]
Topham et al., Carbon Dioxide. Ullmann's Encyclopedia of Industrial Chemistry. Wiley-VCH. May 2014:1-43.**.
[cited by applicant]
Traynor et al., Dissolution of olivines from steel and copper slags in basic solution. Cement and Concrete Research. 2020 Ju1;133: 106065. Author manuscript provided. 33 pages.**.
[cited by applicant]
Voldsund et al., Comparison of Technologies for CO2 Capture from Cement Production—Part 1: Technical Evaluation. Energies. Feb. 12, 2019;12:559. 33 pages.**.
[cited by applicant]
Yao et al., Mobility of heavy metals and rare earth elements in incineration bottom ash through particle size reduction. Chemical Engineering Science. Oct. 18, 2014;18:214-220.**.
[cited by applicant]
Zeman et al., The Reduced Emission Oxygen Kiln: A White Paper Report for the Cement Sustainability Initiative of the World Business Council on Sustainable Development. Lenfest Center for Sustainable Energy. Columbia Uni…
[cited by applicant]
Geology. Limestone [retrieved from the internet at May 2, 2024 from URL: https//geology.com/rocks/limestone.shtml> and wayback machine at , URL:https://web.archive.org/web/20211015232211/https://geology.com/rocks/limest…
[cited by applicant]
CN 108117356-A, machine translation (Year: 2018).**.
[cited by applicant]
Hamdy et al., Hydration and characteristics of metakaolin pozzolanic cement pastes. HBRC Journal (2018), vol. 14, issue 2, pp. 150-158.
[cited by applicant]
Mansour et al., Sulfate soil stabilisation with binary blends of lime-silica fume and lime-ground granulated blast furnace slag.
[cited by applicant]
Wu et al. “Effects of sodium sulfate on the hydration and properties of lime-based low carbon cementitious materials”, Journal of Cleaner Production, v220, 2019, pp. 677-626. D0I:10.1016/j.jclepro.2019.02.186. (Year: 20…
[cited by applicant]
Marcelino et al. (2016). Evaluation of pyrite and pyrrhotite in concretes. Revista IBRACON De Estruturas E Materials, 9 (3), 484-493 . D0I0:10.1590/S1983-41952016000300009 (Year: 2016).
[cited by applicant]
The Influence of Moulding Moisture Content On The Engineering Properties of Aggregate-Lime-Natural Pozzolan Mixes, Oct. 2004, Dissertation, University of Pretoria, Pretor.**.
[cited by applicant]
K. Robalo et al., “Enhanced Mechanical and Durability Performances of Low Cement Concrete With Natural Pozzolan Addition,” Journal of Advanced Concrete Technology, May 2021, 18 pages.**.
[cited by applicant]
International Patent Application No. PCT/US2022/082301—International Search Report and Written Opinion mailed Apr. 28, 2023, 17 pages.**.
[cited by applicant]
No Author Listed], LumiShield Chemistry. LumiShield Technologies, Inc. Pittsburgh, PA Accessed Oct. 15, 2021 as available Jan. 31, 2019 from https://web.archive.org/web/20190131025944/http://lumishieldtech.com/chemistry…
[cited by applicant]
[No Author Listed], Mineral Commodity Summaries. U.S. Department of the Interior, U.S. Geological Survey. Jan. 2018. 204 pages**.
[cited by applicant]
[No Author Listed], Mini Chlor Alkali Plant. SkidPlant. Chenai, India. Accessed Oct. 15, 2021 as available Jan. 10, 2019 from https://web.archive.org/web/20190110233048/http://www.skidplant.com/mini-chlor-alkali-plant 3…
[cited by applicant]
[No Author Listed], Renewable Power Generation Costs in 2017. International Renewable Energy Agency (IRENA), Abu Dhabi. 2018. 160 pages.**.
[cited by applicant]
Alonso et al., (2001). “Alkaline activation of metakaolin and calcium hydroxide mixtures: influence of temperature, activator concentration and solids ratio,” Materials Letters 47: 55-62.**.
[cited by applicant]
Azo Materials. (2024). Silica-Silicon Dioxide (SiO2) retrieved from the internet on Mar. 6, 2024 from <https://www.azom.com/article.aspx? ArticleID=1114> 5 pages.**.
[cited by applicant]
Barker et al., CO2 Capture in the Cement Industry. IEA Greenhouse Gas R&D Programme. Cheltenham, Glos., UK. 2008; 1-221.**.
[cited by applicant]
Belevi et al., Factors Determining the Element Behavior in Municipal Solid Waste Incinerators. 1. Field Studies. Environ. Sci. Technol. May 12, 2000;34(12):2501-2506**.
[cited by applicant]
Bioworld. (2016). “Safety Data Sheet, Calcium Chloride Dihydrate,” retrieved from the internet on Mar. 6, 2024 from <https:// www.bio-world.com/site/accounts/masterfiles/M S Ds/M S-40300016. pdf> 8 pages.**.
[cited by applicant]
Bjerge et al., CO2 Capture in the Cement Industry, Norcem CO2 Capture Project (Norway). Energy Procedia. 2014;63:6455-63.**.
[cited by applicant]
Blunt et al., Carbon Dioxide in Enhanced Oil Recovery. Energy Convers. Mgmt. 1993;34(9-11 ):1197-1204.**.
[cited by applicant]
Carrasco-Maldonado et al., Oxy-fuel combustion technology for cement production—State of the art research and technology development. International Journal of Greenhouse Gas Control. 2016;45: 189-99. Epub Jan. 4, 2016.*…
[cited by applicant]
Chen et al., (2009). “Incorporation of waste materials into portland cement clinker synthesized from natural raw materials,” J Mater Sci 44: 2617-2627.**.
[cited by applicant]
Chen et al., Environmental impact of cement production: detail of the different processes and cement plant variability evaluation. Journal of Cleaner Production. 201O;18(5):478-485. Epub Jan. 4, 2010.**.
[cited by applicant]
Davis et al., Net-zero emissions energy systems. Science. Jun. 29, 2018; 360(6396) 9 pages. Supplementary Material included. 27 pages total.**.
[cited by applicant]
Delgado et al., CO2 Balance in a Compression and Purification Unit (CPU). Energy Procedia. 2014; 63:322-31.**.
[cited by applicant]
Dowling et al., Lime in the limelight. Journal of Cleaner Production. 2015;92:13-22. Epub Dec. 20, 2014.**.
[cited by applicant]
Dubois et al., Study of the post-combustion CO2 capture applied to conventional and partial oxy-fuel cement plants. Energy Procedia. 2017; 114:6181-96.**.
[cited by applicant]
Ellis et al. (2020). “Toward Electrochemical Synthesis of Cement-An Electrolyzer-Based Process for Decarbonating:;aCO3 While Producing Useful Gas Streams,” PNAS 117(23): 12584-12591**.
[cited by applicant]
Encyclopedia Britannica. (2016). “Sedimentary rock,” retrieved from the internet on Mar. 7, 2024 from <https://www.britannica.com/science/sedimentary-rock/ Limestones-and-dolomites and wayback https://web.archive.org/we…
[cited by applicant]
Free, M.L., Hydrometallurgy—Fundamentals and Applications. 2013. John Wiley & Sons, Inc. 451 pages.**.
[cited by applicant]
Funari et al., Solid residues from Italian municipal solid waste incinerators: A source for “critical” raw materials. Waste Manag. Nov. 2015; 45:206-16. Epub Dec. 12, 2014. Pre-publication version provided. 11 pages.**.
[cited by applicant]
Gardarsdottir et al., Comparison of Technologies for CO2 Capture from Cement Production-Part 2: Cost Analysis. Energies. Feb. 10, 2019;12(3):1-20.**.
[cited by applicant]
Geels et al., Sociotechnical transitions for deep decarbonization. Science. Sep. 22, 2017;357(6357): 1242-1244.**.
[cited by applicant]
Gray, H.B., Powering the planet with solar fuel. Nature Chemistry. Mar. 19, 2009; 1:7; 2 pages.**.
[cited by applicant]
Haruta et al., Catalytic Combustion of Hydrogen I-Its Role in Hydrogen Utilization System and Screening of Catalyst Materials. Int. J. Hydrogen Energy. 1981;6(6):601-8.
[cited by applicant]
Hasanbeigi et al., Emerging energy-efficiency and CO2 emission-reduction technologies for cement and concrete production: A technical review. Renewable and Sustainable Energy Reviews. Aug. 30, 2012;16(8):6220-6238.**.
[cited by applicant]
Ibrahim et al., (2018). “Metakaolin as an Active Pozzolan for Cement That Improves Its Properties and Reduces Its Pollution Hazard,” Journal of Minerals and Materials Characterization and Engineering 6: 86-104.**.
[cited by applicant]
Imbabi et al., Trends and developments in green cement and concrete technology. International Journal of Sustainable Built Environment. 2012;1:194-216. doi: 10.1016/i.iisbe.2013.05.001.**.
[cited by applicant]
Irabien et al., (1990). “Thermal Dehydration of Calcium Hydroxide. 1. Kinetic Model and Parameters,” Ind. Eng. Chem. Res. 29(8): 1599-1606.**.
[cited by applicant]
Janssen, G.J.M., Modelling study of CO2 poisoning on PEMFC anodes. Journal of Power Sources. Jul. 3, 2004;136:45-54.**.
[cited by applicant]
Joseph et al., The Use of Municipal Solid Waste Incineration Ash in Various Building Materials: A Belgian Point of View. Materials. Jan. 16, 2018; 11(141): 1-30.**.
[cited by applicant]
Keith et al., A Process for Capturing CO2 from the Atmosphere. Joule. Aug. 15, 2018;2(8): 1573-94.**.
[cited by applicant]
Kelly et al., Historical Statistics for Mineral and Material Commodities in the United States, US Geological Survey. Reston, VA Accessed Jan. 7, 2009 as updated Apr. 17, 2008 from http://minerals.usga.gov/ds/2005/140/. …
[cited by applicant]
Lassagne et al., Techno-economic study of CO2 capture for aluminum primary production for different electrolytic cell ventilation rates. Chemical Engineering Journal. Jun. 26, 2013;230:338-50.**.
[cited by applicant]
Lawal et al., Dynamic modelling and analysis of post-combustion CO2 chemical absorption process for coal-fired power plants. Fuel. Jun. 2, 2010;89(10):2791-2801**.
[cited by applicant]
Lehne et al., Making Concrete Change; Innovation in Low-carbon Cement and Concrete. Chatham House, London, UK. Jun. 2018. 138 pages.**.
[cited by applicant]
Li et al., Greenhouse Gas Emissions, Energy Efficiency, and Cost of Synthetic Fuel Production Using Electrochemical CO2 Conversion and the Fischer-Tropsch Process. Energy Fuels. Jun. 1, 2016;30(7):5980-9.**.
[cited by applicant]
Licht et al., STEP Cement: Solar Thermal Electrochemical Production of Cao without CO2 emission. Chem. Commun. 2012;48:6019-6021. doi: 10.1039/c2cc31341c.**.
[cited by applicant]
Licht, “Co-Production of Cement and Carbon Nanotubes with a Carbon Negative Footprint,” Journal of CO2 Utilization, Aug. 2016. Accessed online at on Jan. 14, 2019.**.
[cited by applicant]
Liu et al., Experimental study on improving cement quality with oxygen enriched combustion technology. IOP Conf. Series: Materials Science and Engineering. 2015;103:1-7.**.
[cited by applicant]
Madrid et al., Synthesis and morphological examination of high-purity Ca(OH)2 nanoparticles suitable to consolidate porous surfaces. Applied Surface Science. 2017;424:2-8. Epub Mar. 27, 2017.**.
[cited by applicant]
Marin et al., Simulating the Impact of Oxygen Enrichment in a Cement Rotary Kiln Using Advanced Computational Methods. Combust. Sci. and Tech. 2001;164:193-207.**.
[cited by applicant]
Mascolo et al., Influence of Polymorphism and Stabilizing lons on the Strength of Alite. Journal of the American Ceramic Society—Discussion and Notes. Apr. 1973;56(4):222-3.**.
[cited by applicant]
Mirghiasi et al., (2014), “Preparation and characterization of Cao nanoparticles from Ca(OH)2 by direct thermal decomposition method,” Journal of Industrial and Engineering Chemistry 20: 113-117.**.
[cited by applicant]
Mitlitsky et al. (1998). “Regenerative Fuel Cell Systems,” Energy & Fuels 12:56-71.**.
[cited by applicant]
Morf et al., Precious metals and rare earth elements in municipal solid waste—sources and fate in a Swiss incineration plant. Waste Manag. Mar. 2013;33(3):634-44. Epub Oct. 22, 2012. Erratum in: Waste Manag. Jun. 2013;3…
[cited by applicant]