World's Best Scientists 2026 revealed!

D-Index & Metrics

Chemistry

D-Index
61
Citations
12000
World Ranking
9329
National Ranking
240

George Nakhla publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where George Nakhla sits on this spectrum.

61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61 publications 1,295+

This scientist: 299 publications — 63rd percentile

63% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

George Nakhla D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where George Nakhla sits on this spectrum.

40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40 D-Index 159+

This scientist: 61 D-Index — 49th percentile

49% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

Overview

George Nakhla is affiliated with the University of Western Ontario in Canada, contributing extensively to research in environmental science and engineering. Their work predominantly centers on wastewater treatment and nitrogen removal, reflecting a substantial focus on anaerobic digestion and biogas production.

The research spans several key topics, including:

  • Wastewater Treatment and Nitrogen Removal
  • Anaerobic Digestion and Biogas Production
  • Constructed Wetlands for Wastewater Treatment
  • Membrane Separation Technologies
  • Biofuel Production and Bioconversion
  • Microbial Fuel Cells and Bioremediation
  • Water-Energy-Food Nexus Studies

Nakhla's academic output includes multiple recent papers such as:

  • Partial nitrification-reactor configurations, and operational conditions: Performance analysis (2020, Journal of Environmental Chemical Engineering)
  • Simultaneous nitrification-denitrifying phosphorus removal (SNDPR) at low DO for treating carbon-limited municipal wastewater (2020, The Science of The Total Environment)
  • Simultaneous partial nitrification and denitrifying phosphorus removal (PNDPR) in a sequencing batch reactor process operated at low DO and high SRT for carbon and energy reduction (2021, Chemical Engineering Journal)
  • Enzymatic pre-treatment for enhancement of primary sludge fermentation (2020, Bioresource Technology)
  • Performance and bacterial community structure of a novel inverse fluidized bed bioreactor (IFBBR) treating synthetic municipal wastewater (2020, The Science of The Total Environment)

The frequent co-authorship collaborations of Nakhla include work with:

  • Domenico Santoro
  • Mingu Kim
  • Ahmed Al-Omari
  • John Walton
  • Katherine Y. Bell

Core publication venues where Nakhla's work regularly appears are:

  • Proceedings of the Water Environment Federation
  • The Science of The Total Environment
  • Water Research
  • Journal of Environmental Chemical Engineering
  • Chemical Engineering Journal

The scientist has also contributed to book publications under the Water Environment Federation, with titles including:

  • Impact of Temperature on Cellulose Degradation in Wastewater Treatment (2020)
  • Enzymatic Pre-Treatment for Enhancement of Cellulose Fermentation in Primary Sludges (2020)

Their research interests align with various subfields such as Pollution, Building and Construction, Industrial and Manufacturing Engineering, Water Science and Technology, and Biomedical Engineering, supporting a multi-disciplinary approach to environmental challenges.

Best Publications

  • A critical review on inhibition of dark biohydrogen fermentation

    Elsayed Elbeshbishy;Bipro Ranjan Dhar;George Nakhla;Hyung-Sool Lee

  • Preparation, characterization and performance of Al2O3/PES membrane for wastewater filtration

    Nermen Maximous;G. Nakhla;W. Wan;K. Wong

  • Biochemical methane potential (BMP) of food waste and primary sludge: influence of inoculum pre-incubation and inoculum source.

    Elsayed Elbeshbishy;George Nakhla;Hisham Hafez

  • Techno-economic evaluation of ultrasound and thermal pretreatments for enhanced anaerobic digestion of municipal waste activated sludge

    Bipro Ranjan Dhar;George Nakhla;Madhumita B. Ray

  • A critical literature review on biohydrogen production by pure cultures

    Omneya Elsharnouby;Hisham Hafez;George Nakhla;M. Hesham El Naggar

  • Single and combined effect of various pretreatment methods for biohydrogen production from food waste

    Elsayed Elbeshbishy;Hisham Hafez;Bipro Ranjan Dhar;George Nakhla

  • Biokinetics of biodegradation of surfactants under aerobic, anoxic and anaerobic conditions.

    Prasanna K. Mohan;George Nakhla;Ernest. K. Yanful

  • Performance of a novel ZrO2/PES membrane for wastewater filtration

    Nermen Maximous;George Nakhla;Wan Wan;Ken Wong

  • Effect of organic loading on a novel hydrogen bioreactor

    Hisham Hafez;George Nakhla;M. Hesham El. Naggar;Elsayed Elbeshbishy

  • The effect of heat pretreatment temperature on fermentative hydrogen production using mixed cultures

    Bita Baghchehsaraee;George Nakhla;Dimitre Karamanev;Argyrios Margaritis

  • Comparative assessment of single-stage and two-stage anaerobic digestion for the treatment of thin stillage.

    Noha Nasr;Elsayed Elbeshbishy;Hisham Hafez;George Nakhla

  • Long-term performance of high-rate anaerobic reactors for the treatment of oily wastewater.

    Jeganaesan Jeganathan;George Nakhla;Amarjeet Bassi

  • Impact of protein/carbohydrate ratio in the feed wastewater on the membrane fouling in membrane bioreactors

    Sara Arabi;George Nakhla

  • Comparative assessment of hydrophobic and hydrophilic membrane fouling in wastewater applications

    Nermen Maximous;G. Nakhla;W. Wan

  • Simultaneous nitrification–denitrification in slow sand filters

    George Nakhla;Shaukat Farooq

  • Fluidized-Bed Bioreactor Applications for Biological Wastewater Treatment: A Review of Research and Developments

    Michael J. Nelson;George Nakhla;Jesse Zhu

  • Simultaneous carbon, nitrogen and phosphorous removal from municipal wastewater in a circulating fluidized bed bioreactor.

    Ajay Patel;Jesse Zhu;George Nakhla

  • Long term performance of MBR for biological nitrogen removal from synthetic municipal wastewater.

    Ladan Holakoo;George Nakhla;Amarjeet S. Bassi;Ernest K. Yanful

  • Optimization of Al2O3/PES membranes for wastewater filtration

    Nermen Maximous;G. Nakhla;K. Wong;W. Wan

  • Electro-kinetic dewatering of oily sludges

    Lin Yang;George Nakhla;Amarjeet Bassi

  • Liquid-solid circulating fluidized bed waste water treatment system for simultaneous carbon, nitrogen and phosphorus removal

    Jingxu Zhu;George Nakhla;Yubo Cui

Frequent Co-Authors

Jesse Zhu
Jesse Zhu University of Western Ontario
Elsayed Elbeshbishy
Elsayed Elbeshbishy Toronto Metropolitan University
Amarjeet S. Bassi
Amarjeet S. Bassi University of Western Ontario
Madhumita B. Ray
Madhumita B. Ray University of Western Ontario
M. Hesham El Naggar
M. Hesham El Naggar University of Western Ontario
Ernest K. Yanful
Ernest K. Yanful University of Western Ontario
Ajay K. Ray
Ajay K. Ray University of Western Ontario
Virender K. Sharma
Virender K. Sharma Texas A&M University
Moncef L. Nehdi
Moncef L. Nehdi University of Guelph
Damien J. Batstone
Damien J. Batstone University of Queensland

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