World's Best Scientists 2026 revealed!
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Engineering and Technology
South Africa
2026

D-Index & Metrics

Engineering and Technology

D-Index
59
Citations
10441
World Ranking
2403
National Ranking
4

Johann F. Görgens publication distribution in Engineering and Technology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Engineering and Technology in 2026. The highlighted bar marks where Johann F. Görgens sits on this spectrum.

38–47 publications: 20 scientists 48–57 publications: 35 scientists 58–67 publications: 96 scientists 68–77 publications: 135 scientists 78–87 publications: 190 scientists 88–97 publications: 259 scientists 98–107 publications: 283 scientists 108–117 publications: 369 scientists 118–127 publications: 341 scientists 128–137 publications: 386 scientists 138–147 publications: 372 scientists 148–157 publications: 457 scientists 158–167 publications: 415 scientists 168–177 publications: 407 scientists 178–187 publications: 421 scientists 188–197 publications: 378 scientists 198–207 publications: 403 scientists 208–217 publications: 317 scientists 218–227 publications: 346 scientists 228–237 publications: 321 scientists 238–247 publications: 260 scientists 248–257 publications: 280 scientists 258–267 publications: 240 scientists 268–277 publications: 214 scientists 278–287 publications: 242 scientists 288–297 publications: 203 scientists 298–307 publications: 166 scientists 308–317 publications: 154 scientists 318–327 publications: 175 scientists 328–337 publications: 159 scientists 338–347 publications: 99 scientists 348–357 publications: 131 scientists 358–367 publications: 106 scientists 368–377 publications: 118 scientists 378–387 publications: 97 scientists 388–397 publications: 108 scientists 398–407 publications: 82 scientists 408–417 publications: 71 scientists 418–427 publications: 64 scientists 428–437 publications: 55 scientists 438–447 publications: 54 scientists 448–457 publications: 60 scientists 458–467 publications: 47 scientists 468–477 publications: 40 scientists 478–487 publications: 30 scientists 488–497 publications: 29 scientists 498–507 publications: 38 scientists 508–517 publications: 40 scientists 518–527 publications: 32 scientists 528–537 publications: 23 scientists 538–547 publications: 28 scientists 548–557 publications: 23 scientists 558–567 publications: 19 scientists 568–577 publications: 16 scientists 578–587 publications: 17 scientists 588–597 publications: 18 scientists 598–607 publications: 22 scientists 608–617 publications: 15 scientists 618–627 publications: 9 scientists 628–637 publications: 11 scientists 638–647 publications: 21 scientists 648–657 publications: 12 scientists 658–667 publications: 9 scientists 668–677 publications: 11 scientists 678–687 publications: 9 scientists 688–697 publications: 6 scientists 698–707 publications: 14 scientists 708–717 publications: 7 scientists 718–727 publications: 8 scientists 728–737 publications: 10 scientists 738–747 publications: 9 scientists 748–757 publications: 5 scientists 758–767 publications: 5 scientists 768–777 publications: 11 scientists 778–787 publications: 7 scientists 788–797 publications: 2 scientists 798–803 publications: 4 scientists 804+ publications: 100 scientists
38 publications 804+

This scientist: 242 publications — 62nd percentile

62% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 804 publications or more.

Johann F. Görgens D-index placement in Engineering and Technology in 2026

The chart shows the D-index (discipline H-index) distribution of Engineering and Technology scientists ranked by Research.com in 2026. The highlighted bar marks where Johann F. Görgens sits on this spectrum.

30 D-Index: 59 scientists 31 D-Index: 114 scientists 32 D-Index: 129 scientists 33 D-Index: 189 scientists 34 D-Index: 200 scientists 35 D-Index: 262 scientists 36 D-Index: 311 scientists 37 D-Index: 312 scientists 38 D-Index: 350 scientists 39 D-Index: 385 scientists 40 D-Index: 348 scientists 41 D-Index: 362 scientists 42 D-Index: 426 scientists 43 D-Index: 380 scientists 44 D-Index: 310 scientists 45 D-Index: 341 scientists 46 D-Index: 301 scientists 47 D-Index: 306 scientists 48 D-Index: 271 scientists 49 D-Index: 246 scientists 50 D-Index: 210 scientists 51 D-Index: 253 scientists 52 D-Index: 213 scientists 53 D-Index: 221 scientists 54 D-Index: 195 scientists 55 D-Index: 186 scientists 56 D-Index: 170 scientists 57 D-Index: 167 scientists 58 D-Index: 166 scientists 59 D-Index: 144 scientists 60 D-Index: 152 scientists 61 D-Index: 141 scientists 62 D-Index: 138 scientists 63 D-Index: 131 scientists 64 D-Index: 118 scientists 65 D-Index: 114 scientists 66 D-Index: 119 scientists 67 D-Index: 95 scientists 68 D-Index: 87 scientists 69 D-Index: 77 scientists 70 D-Index: 89 scientists 71 D-Index: 69 scientists 72 D-Index: 54 scientists 73 D-Index: 46 scientists 74 D-Index: 55 scientists 75 D-Index: 54 scientists 76 D-Index: 49 scientists 77 D-Index: 53 scientists 78 D-Index: 46 scientists 79 D-Index: 28 scientists 80 D-Index: 39 scientists 81 D-Index: 36 scientists 82 D-Index: 24 scientists 83 D-Index: 26 scientists 84 D-Index: 36 scientists 85 D-Index: 18 scientists 86 D-Index: 25 scientists 87 D-Index: 19 scientists 88 D-Index: 26 scientists 89 D-Index: 27 scientists 90 D-Index: 23 scientists 91 D-Index: 15 scientists 92 D-Index: 12 scientists 93 D-Index: 9 scientists 94 D-Index: 15 scientists 95 D-Index: 10 scientists 96 D-Index: 13 scientists 97 D-Index: 13 scientists 98 D-Index: 9 scientists 99 D-Index: 7 scientists 100 D-Index: 7 scientists 101 D-Index: 8 scientists 102 D-Index: 7 scientists 103 D-Index: 7 scientists 104 D-Index: 9 scientists 105 D-Index: 6 scientists 106 D-Index: 9 scientists 107+ D-Index: 99 scientists
30 D-Index 107+

This scientist: 59 D-Index — 77th percentile

77% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 107 D-Index or more.

Research.com Recognitions

  • 2026 - Research.com Engineering and Technology in South Africa Leader Award

Overview

Johann F. Görgens is affiliated with Stellenbosch University in South Africa. Their research primarily focuses on engineering disciplines with significant contributions in biomedical engineering, molecular biology, control and systems engineering, nutrition and dietetics, and biotechnology.

Their work covers several main research topics, including:

  • Biofuel production and bioconversion
  • Catalysis for biomass conversion
  • Microbial metabolic engineering and bioproduction
  • Thermochemical biomass conversion processes
  • Lignin and wood chemistry
  • Microbial metabolites in food biotechnology
  • Process optimization and integration

Johann F. Görgens has published frequently in the following scientific venues:

  • Waste and Biomass Valorization
  • Biofuels Bioproducts and Biorefining
  • Biochemical Engineering Journal
  • Biomass Conversion and Biorefinery
  • Industrial Crops and Products

Notable recent papers authored or coauthored include:

  • Pyrolysis of waste polypropylene plastics for energy recovery: Influence of heating rate and vacuum conditions on composition of fuel product (2020, Fuel Processing Technology)
  • Techno-economic and environmental analysis of bio-oil production from forest residues via non-catalytic and catalytic pyrolysis processes (2020, Energy Conversion and Management)
  • Torrefaction of biomass and plastic from municipal solid waste streams and their blends: Evaluation of interactive effects (2020, Fuel)
  • Co-combustion of torrefied biomass-plastic waste blends with coal through TGA: Influence of synergistic behaviour (2021, Energy)
  • The synergistic application of quinone reductase and lignin peroxidase for the deconstruction of industrial (technical) lignins and analysis of the degraded lignin products (2020, Bioresource Technology)

Frequent collaborators include:

  • Eugéne van Rensburg
  • Abdul M. Petersen
  • Somayeh Farzad
  • Jeanne Louw
  • Mohsen Mandegari

Best Publications

  • Production of char from vacuum pyrolysis of South-African sugar cane bagasse and its characterization as activated carbon and biochar

    Marion Carrier;Ailsa G. Hardie;Ümit Uras;Johann Görgens

  • Multi-product biorefineries from lignocelluloses: a pathway to revitalisation of the sugar industry?

    Somayeh Farzad;Mohsen Ali Mandegari;Miao Guo;Kathleen F. Haigh

  • Non-isothermal kinetic analysis of the devolatilization of corn cobs and sugar cane bagasse in an inert atmosphere

    Akinwale O. Aboyade;Akinwale O. Aboyade;Thomas J. Hugo;Marion Carrier;Edson L. Meyer

  • A critical review on biomass gasification, co-gasification, and their environmental assessments

    Somayeh Farzad;Mohsen Ali Mandegari;Johann F. Görgens

  • Comparison of slow and vacuum pyrolysis of sugar cane bagasse

    Marion Carrier;Thomas Hugo;Johann Gorgens;Hansie Knoetze

  • Exergy analysis of a lignocellulosic-based biorefinery annexed to a sugarcane mill for simultaneous lactic acid and electricity production

    Mortaza Aghbashlo;Mohsen Mandegari;Meisam Tabatabaei;Somayeh Farzad

  • Waste truck-tyre processing by flash pyrolysis in a conical spouted bed reactor

    G. Lopez;J. Alvarez;M. Amutio;N.M. Mkhize

  • Techno-economic comparison of biojet fuel production from lignocellulose, vegetable oil and sugar cane juice.

    Gabriel Wilhelm Diederichs;Mohsen Ali Mandegari;Somayeh Farzad;Johann F. Görgens

  • Progress and challenges in the engineering of non-cellulolytic microorganisms for consolidated bioprocessing

    Riaan den Haan;Eugéne van Rensburg;Shaunita H Rose;Johann F Görgens

  • Thermogravimetric study of the pyrolysis characteristics and kinetics of coal blends with corn and sugarcane residues

    Akinwale O. Aboyade;Akinwale O. Aboyade;Johann F. Görgens;Marion Carrier;Edson L. Meyer

  • Comparison of energy efficiency and economics of process designs for biobutanol production from sugarcane molasses

    A.B. van der Merwe;H. Cheng;J.F. Görgens;J.H. Knoetze

  • Model fitting kinetic analysis and characterisation of the devolatilization of coal blends with corn and sugarcane residues

    Akinwale O. Aboyade;Akinwale O. Aboyade;Marion Carrier;Edson L. Meyer;Johannes H. Knoetze

  • Pyrolysis and combustion of municipal solid wastes: evaluation of synergistic effects using TGA-MS

    Sanjana D. Gunasee;Sanjana D. Gunasee;Marion Carrier;Marion Carrier;Johann F. Gorgens;Romeela Mohee

  • Pyrolysis of waste polypropylene plastics for energy recovery: Influence of heating rate and vacuum conditions on composition of fuel product

    George Kofi Parku;François-Xavier Collard;Johann F. Görgens

  • Evaluation of the properties of tyre pyrolysis oils obtained in a conical spouted bed reactor

    J. Alvarez;G. Lopez;M. Amutio;N.M. Mkhize

  • Opportunities and prospects of biorefinery-based valorisation of pulp and paper sludge.

    Lalitha Devi Gottumukkala;Kate Haigh;François-Xavier Collard;Eugéne van Rensburg

  • Techno-economic comparison of ethanol and electricity coproduction schemes from sugarcane residues at existing sugar mills in Southern Africa

    Abdul M Petersen;Mathew C Aneke;Johann F Görgens

  • The metabolic burden of the PGK1 and ADH2 promoter systems for heterologous xylanase production by Saccharomyces cerevisiae in defined medium

    Johann F. Görgens;Johann F. Görgens;Willem H. van Zyl;Johannes H. Knoetze;Bärbel Hahn-Hägerdal

  • Economic and environmental assessment of cellulosic ethanol production scenarios annexed to a typical sugar mill

    Mohsen Ali Mandegari;Somayeh Farzad;Johann F. Görgens

  • Impact of the lignocellulosic material on fast pyrolysis yields and product quality.

    Marion Carrier;Jan-Erns Joubert;Stephen Danje;Thomas Hugo

  • Influence of pretreatment severity on structural changes, lignin content and enzymatic hydrolysis of sugarcane bagasse samples

    Michel Brienzo;Michel Brienzo;Simphiwe Fikizolo;Yuda Benjamin;Luvuyo Tyhoda

Frequent Co-Authors

Willem H. van Zyl
Willem H. van Zyl Stellenbosch University
Venkatesh Balan
Venkatesh Balan Michigan State University
Bruce E. Dale
Bruce E. Dale Michigan State University
Bärbel Hahn-Hägerdal
Bärbel Hahn-Hägerdal Lund University
Javier Bilbao
Javier Bilbao University of the Basque Country
Gartzen Lopez
Gartzen Lopez University of the Basque Country
Martin Olazar
Martin Olazar University of the Basque Country
Maider Amutio
Maider Amutio University of the Basque Country
Rasmus Bro
Rasmus Bro University of Copenhagen
Meisam Tabatabaei
Meisam Tabatabaei Agricultural Biotechnology Research Institute of Iran

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