John Groppo

1.7k total citations
55 papers, 1.3k citations indexed

About

John Groppo is a scholar working on Geochemistry and Petrology, Mechanical Engineering and Building and Construction. According to data from OpenAlex, John Groppo has authored 55 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Geochemistry and Petrology, 17 papers in Mechanical Engineering and 14 papers in Building and Construction. Recurrent topics in John Groppo's work include Coal and Its By-products (24 papers), Geochemistry and Elemental Analysis (16 papers) and Recycling and utilization of industrial and municipal waste in materials production (14 papers). John Groppo is often cited by papers focused on Coal and Its By-products (24 papers), Geochemistry and Elemental Analysis (16 papers) and Recycling and utilization of industrial and municipal waste in materials production (14 papers). John Groppo collaborates with scholars based in United States, United Kingdom and China. John Groppo's co-authors include Rick Honaker, James C. Hower, Wencai Zhang, B.K. Parekh, Uschi M. Graham, Mohammad Rezaee, Shifeng Dai, Colin R. Ward, M. Mercedes Maroto‐Valer and Dongping Tao and has published in prestigious journals such as Bioresource Technology, Fuel and Sustainability.

In The Last Decade

John Groppo

53 papers receiving 1.3k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
John Groppo United States	21	791	421	401	299	196	55	1.3k
Grigorios Itskos Greece	17	334 0.4×	235 0.6×	362 0.9×	129 0.4×	254 1.3×	36	996
Zhaoping Zhong China	19	459 0.6×	293 0.7×	147 0.4×	242 0.8×	306 1.6×	62	1.1k
Behzad Vaziri Hassas United States	20	310 0.4×	160 0.4×	705 1.8×	654 2.2×	492 2.5×	29	1.3k
Changqi Liu China	18	294 0.4×	286 0.7×	229 0.6×	82 0.3×	323 1.6×	49	1.1k
Sara J. Couperthwaite Australia	24	232 0.3×	215 0.5×	645 1.6×	795 2.7×	415 2.1×	69	1.8k
Chang Wen China	24	396 0.5×	108 0.3×	253 0.6×	87 0.3×	736 3.8×	74	1.5k
Henk Nugteren Netherlands	17	358 0.5×	626 1.5×	120 0.3×	110 0.4×	100 0.5×	27	1.4k
Facun Jiao China	17	474 0.6×	388 0.9×	156 0.4×	50 0.2×	254 1.3×	47	864
Nils Skoglund Sweden	25	859 1.1×	346 0.8×	478 1.2×	128 0.4×	1.3k 6.8×	73	1.9k

Countries citing papers authored by John Groppo

Since Specialization

Citations

This map shows the geographic impact of John Groppo's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by John Groppo with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites John Groppo more than expected).

Fields of papers citing papers by John Groppo

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John Groppo. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by John Groppo. The network helps show where John Groppo may publish in the future.

Co-authorship network of co-authors of John Groppo

This figure shows the co-authorship network connecting the top 25 collaborators of John Groppo. A scholar is included among the top collaborators of John Groppo based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with John Groppo. John Groppo is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Berti, Debora, John Groppo, P. C. Joshi, et al.. (2025). Electron microbeam investigations of the spent ash from the pilot-scale acid extraction of rare earth elements from a beneficiated Kentucky fly ash. International Journal of Coal Geology. 303. 104738–104738. 3 indexed citations

Werner, Joshua, et al.. (2023). Kinetics and Modeling of Counter-Current Leaching of Waste Random-Access Memory Chips in a Cu-NH3-SO4 System Utilizing Cu(II) as an Oxidizer. Materials. 16(18). 6274–6274. 5 indexed citations

Hower, James C., John Groppo, Cortland F. Eble, Shelley D. Hopps, & Tonya Morgan. (2023). Was coal metamorphism an influence on the minor element chemistry of the Middle Pennsylvanian Springfield (No. 9) coal in Western Kentucky?. International Journal of Coal Geology. 274. 104295–104295. 7 indexed citations

Werner, Joshua, et al.. (2022). Material Characterization and Physical Processing of a General Type of Waste Printed Circuit Boards. Sustainability. 14(20). 13479–13479. 5 indexed citations

Hower, James C., John Groppo, John D.H. Wiseman, et al.. (2021). Distribution of rare earth elements in the pilot-scale processing of fly ashes derived from eastern Kentucky coals: Comparisons of the feed and processed ashes. Fuel. 295. 120562–120562. 20 indexed citations

Hower, James C. & John Groppo. (2020). Rare Earth-bearing particles in fly ash carbons: Examples from the combustion of eastern Kentucky coals. Energy Geoscience. 2(2). 90–98. 27 indexed citations

Fan, Zhen, et al.. (2019). Beneficial Reuse of Industrial CO2 Emissions Using a Microalgae Photobioreactor: Waste Heat Utilization Assessment. Energies. 12(13). 2634–2634. 14 indexed citations

Stewart, Jennifer J., et al.. (2019). Beneficial re-use of industrial CO2 emissions using microalgae: Demonstration assessment and biomass characterization. Bioresource Technology. 293. 122014–122014. 21 indexed citations

Zhang, Wencai, Rick Honaker, & John Groppo. (2017). Concentration of rare earth minerals from coal by froth flotation. OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information). 34(3). 132–137. 39 indexed citations

10.

Groppo, John, et al.. (2016). Capture and recycle of industrial CO2 emissions using microalgae. Applied Petrochemical Research. 6(3). 279–293. 27 indexed citations

11.

Hower, James C., John Groppo, Kevin R. Henke, et al.. (2015). Notes on the Potential for the Concentration of Rare Earth Elements and Yttrium in Coal Combustion Fly Ash. Minerals. 5(2). 356–366. 70 indexed citations

12.

Wilson, Michael, John Groppo, S. A. Morton, et al.. (2014). CO2 recycling using microalgae for the production of fuels. Applied Petrochemical Research. 4(1). 41–53. 50 indexed citations

13.

Groppo, John, Thomas L. Robl, & James C. Hower. (2004). The beneficiation of coal combustion ash. Geological Society London Special Publications. 236(1). 247–262. 8 indexed citations

14.

Hower, James C., et al.. (2003). Location of Cerium in Coal-Combustion Fly Ashes: Implications for Recovery of Lanthanides. 5(1). 73–78. 63 indexed citations

15.

Tao, Dongping, John Groppo, & B.K. Parekh. (2000). Enhanced ultrafine coal dewatering using flocculation filtration processes. Minerals Engineering. 13(2). 163–171. 55 indexed citations

16.

Groppo, John, et al.. (1996). A selective beneficiation process for high LOI fly ash.. 6. 1 indexed citations

17.

Groppo, John, et al.. (1995). Cleaning of Coal Using an Integrated Grinding-Flotation Column System. Coal Preparation. 16(3-4). 149–166. 1 indexed citations

18.

Groppo, John, et al.. (1994). Influence of copper ion addition on fine coal filter cake parameters. Mining Metallurgy & Exploration. 11(1). 46–49. 7 indexed citations

19.

Groppo, John & B.K. Parekh. (1993). Column flotation studies of Alabama oil shale. Mining Metallurgy & Exploration. 10(4). 191–194. 2 indexed citations

20.

Groppo, John & B.K. Parekh. (1993). Comparison of bubble generating devices for column flotation of fine coal from refuse. Mining Metallurgy & Exploration. 10(1). 9–12. 3 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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