World's Best Scientists 2026 revealed!

D-Index & Metrics

Engineering and Technology

D-Index
36
Citations
6209
World Ranking
8637
National Ranking
97

Hariklia N. Gavala 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 Hariklia N. Gavala 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: 125 publications — 17th percentile

17% of scientists in this discipline score the same or lower.

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

Hariklia N. Gavala 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 Hariklia N. Gavala 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: 36 D-Index — 13th percentile

13% of scientists in this discipline score the same or lower.

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

Overview

Hariklia N. Gavala is affiliated with the Technical University of Denmark in Denmark and specializes in the field of engineering. Their research spans various subfields including building and construction, molecular biology, catalysis, biomedical engineering, and mechanical engineering.

The primary topics of their work focus on anaerobic digestion and biogas production, catalysts for methane reforming, microbial metabolic engineering and bioproduction, carbon dioxide capture technologies, biofuel production and bioconversion, thermochemical biomass conversion processes, and microbial fuel cells and bioremediation.

Hariklia N. Gavala has contributed to several recent papers, including the following publications:

  • Gas Biological Conversions: The Potential of Syngas and Carbon Dioxide as Production Platforms, 2021, Waste and Biomass Valorization
  • Temperature effects on syngas biomethanation performed in a trickle bed reactor, 2020, Chemical Engineering Journal
  • Scale up study of a thermophilic trickle bed reactor performing syngas biomethanation, 2021, Applied Energy
  • Polyhydroxyalkanoate (PHA) purification through dilute aqueous ammonia digestion at elevated temperatures, 2020, Journal of Chemical Technology & Biotechnology
  • Modeling of syngas biomethanation and catabolic route control in mesophilic and thermophilic mixed microbial consortia, 2020, Applied Energy

The frequent coauthors collaborating with Hariklia N. Gavala include:

  • Ioannis V. Skiadas
  • Antonio Grimalt-Alemany
  • Sambit Dutta
  • Konstantinos Asimakopoulos
  • Anna Lymperatou

Hariklia N. Gavala often publishes in these venues:

  • Waste and Biomass Valorization
  • Journal of Cleaner Production
  • Chemical Engineering Journal
  • Biochemical Engineering Journal
  • SSRN Electronic Journal

Their research contributes to advancing knowledge in engineering disciplines with a notable emphasis on sustainable bioenergy and biochemical conversion technologies.

Best Publications

  • Recent Advances and Challenges towards Sustainable Polyhydroxyalkanoate (PHA) Production

    Constantina Kourmentza;Jersson Plácido;Nikolaos Venetsaneas;Anna Burniol-Figols

  • Mesophilic and thermophilic anaerobic digestion of primary and secondary sludge. Effect of pre-treatment at elevated temperature

    Hariklia N. Gavala;U. Yenal;Ioannis V. Skiadas;Peter Westermann

  • Biofuels generation from sweet sorghum: fermentative hydrogen production and anaerobic digestion of the remaining biomass.

    Georgia Antonopoulou;Hariklia N. Gavala;Ioannis V. Skiadas;K. Angelopoulos

  • Kinetics and modeling of anaerobic digestion process.

    Hariklia N. Gavala;Irini Angelidaki;Birgitte Kiær Ahring

  • Improving anaerobic sewage sludge digestion by implementation of a hyper-thermophilic prehydrolysis step.

    Jingquan Lu;Hariklia N. Gavala;Ioannis V. Skiadas;Zuzana Mladenovska

  • Biological hydrogen production in suspended and attached growth anaerobic reactor systems

    Hariklia N. Gavala;Ioannis V. Skiadas;Birgitte Kiær Ahring

  • Hydrogen production from sugars and sweet sorghum biomass using Ruminococcus albus

    I Ntaikou;Hariklia N. Gavala;M Kornaros;G Lyberatos

  • Reactor systems for syngas fermentation processes: A review

    Konstantinos Asimakopoulos;Hariklia N. Gavala;Ioannis V. Skiadas

  • Hydrogen and methane production through two-stage mesophilic anaerobic digestion of olive pulp

    Eleni C. Koutrouli;Haralabos Kalfas;Hariklia N. Gavala;Hariklia N. Gavala;Ioannis V. Skiadas;Ioannis V. Skiadas

  • Treatment of Dairy Wastewater Using an Upflow Anaerobic Sludge Blanket Reactor

    H.N. Gavala;H. Kopsinis;I.V. Skiadas;K. Stamatelatou

  • Biodegradation of phthalate esters during the mesophilic anaerobic digestion of sludge.

    Hariklia N. Gavala;Felipe Alatriste-Mondragon;R. Iranpour;R. Iranpour;Birgitte Kiær Ahring;Birgitte Kiær Ahring

  • Thermal pre-treatment of primary and secondary sludge at 70°C prior to anaerobic digestion

    Ioannis V. Skiadas;H.N. Gavala;Jingquan Lu;Birgitte Kiær Ahring

  • Syngas biomethanation: state-of-the-art review and perspectives

    Antonio Grimalt‐Alemany;Ioannis V. Skiadas;Hariklia N. Gavala

  • Energy balance and cost-benefit analysis of biogas production from perennial energy crops pretreated by wet oxidation.

    Hinrich Uellendahl;Guangtao Wang;Henrik B. Møller;Uffe Jørgensen

  • Butyric acid fermentation from pretreated and hydrolysed wheat straw by an adapted Clostridium tyrobutyricum strain

    G. N. Baroi;I. Baumann;P. Westermann;Hariklia N. Gavala

  • Anaerobic codigestion of agricultural industries' wastewaters

    H. N. Gavala;I.V. Skiadas;Nikolaos A. Bozinis;G. Lyberatos

  • Application of ADM1 for the simulation of anaerobic digestion of olive pulp under mesophilic and thermophilic conditions.

    H Kalfas;IV Skiadas;Hariklia N. Gavala;K Stamatelatou

  • Combined and separate aerobic and anaerobic biotreatment of green olive debittering wastewater.

    G.G. Aggelis;H.N. Gavala;G. Lyberatos

  • Modelling of the periodic anaerobic baffled reactor (PABR) based on the retaining factor concept

    Ioannis V. Skiadas;Hariklia N. Gavala;G. Lyberatos

  • Integration of chlorogenic acid recovery and bioethanol production from spent coffee grounds

    Anna Burniol-Figols;Katarzyna Cenian;Ioannis V. Skiadas;Hariklia N. Gavala

  • Temperature effects on syngas biomethanation performed in a trickle bed reactor

    Konstantinos Asimakopoulos;Mateusz Łężyk;Antonio Grimalt-Alemany;Antonios Melas

  • Enhanced methane productivity from manure fibers by aqueous ammonia soaking pretreatment

    Esperanza Jurado;Ioannis V. Skiadas;Hariklia N. Gavala

Frequent Co-Authors

Ioannis V. Skiadas
Ioannis V. Skiadas Technical University of Denmark
Gerasimos Lyberatos
Gerasimos Lyberatos National Technical University of Athens
Birgitte Kiær Ahring
Birgitte Kiær Ahring Washington State University
Irini Angelidaki
Irini Angelidaki Technical University of Denmark
George Aggelis
George Aggelis University of Patras
Anne S. Meyer
Anne S. Meyer Technical University of Denmark
Jens Ejbye Schmidt
Jens Ejbye Schmidt University of Southern Denmark
Michael Kornaros
Michael Kornaros University of Patras
Michael K. Stenstrom
Michael K. Stenstrom University of California, Los Angeles
Uffe Jørgensen
Uffe Jørgensen Aarhus University

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Exploring a future in Engineering and Technology opens up a wide range of online degree options and career paths. Many students are interested in combining technical skills with business acumen. If you're looking to boost management skills, consider an mba online no gmat program for greater flexibility and accessibility.

Project management is another key area for tech professionals. Earning a project manager degree online can prepare you to lead technical teams and complex projects, often with courses tailored for distance learners.

Real estate is an emerging field for those with a knack for technology and analytics. Consider pursuing an online degree real estate to blend engineering knowledge with property management or urban planning careers.

For those passionate about technology and user experience, there are also many ux degree programs that teach you to design user-friendly digital products—a skill highly valued in the industry.

With these flexible online degrees, students can tailor their education to fit evolving tech careers, often while working or gaining practical experience.

Best Scientists Citing Hariklia N. Gavala

Trending Scientists

Recently Published Articles