World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
38
Citations
5109
World Ranking
8683
National Ranking
3101

Say Kee Ong publication distribution in Environmental Sciences in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Environmental Sciences in 2026. The highlighted bar marks where Say Kee Ong sits on this spectrum.

41–50 publications: 21 scientists 51–60 publications: 62 scientists 61–70 publications: 133 scientists 71–80 publications: 257 scientists 81–90 publications: 361 scientists 91–100 publications: 440 scientists 101–110 publications: 492 scientists 111–120 publications: 541 scientists 121–130 publications: 617 scientists 131–140 publications: 544 scientists 141–150 publications: 541 scientists 151–160 publications: 539 scientists 161–170 publications: 444 scientists 171–180 publications: 444 scientists 181–190 publications: 400 scientists 191–200 publications: 377 scientists 201–210 publications: 318 scientists 211–220 publications: 283 scientists 221–230 publications: 263 scientists 231–240 publications: 220 scientists 241–250 publications: 217 scientists 251–260 publications: 180 scientists 261–270 publications: 181 scientists 271–280 publications: 155 scientists 281–290 publications: 130 scientists 291–300 publications: 127 scientists 301–310 publications: 130 scientists 311–320 publications: 85 scientists 321–330 publications: 106 scientists 331–340 publications: 80 scientists 341–350 publications: 83 scientists 351–360 publications: 75 scientists 361–370 publications: 69 scientists 371–380 publications: 52 scientists 381–390 publications: 54 scientists 391–400 publications: 56 scientists 401–410 publications: 44 scientists 411–420 publications: 40 scientists 421–430 publications: 36 scientists 431–440 publications: 25 scientists 441–450 publications: 25 scientists 451–460 publications: 32 scientists 461–470 publications: 29 scientists 471–480 publications: 21 scientists 481–490 publications: 26 scientists 491–500 publications: 25 scientists 501–510 publications: 17 scientists 511–520 publications: 18 scientists 521–530 publications: 15 scientists 531–540 publications: 22 scientists 541–550 publications: 12 scientists 551–560 publications: 15 scientists 561–570 publications: 11 scientists 571–580 publications: 19 scientists 581–590 publications: 9 scientists 591–600 publications: 9 scientists 601–610 publications: 7 scientists 611–620 publications: 11 scientists 621–630 publications: 5 scientists 631–640 publications: 5 scientists 641–650 publications: 6 scientists 651–660 publications: 3 scientists 661–670 publications: 3 scientists 671–680 publications: 4 scientists 681–686 publications: 3 scientists 687+ publications: 100 scientists
41 publications 687+

This scientist: 115 publications — 21st percentile

21% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 687 publications or more.

Say Kee Ong D-index placement in Environmental Sciences in 2026

The chart shows the D-index (discipline H-index) distribution of Environmental Sciences scientists ranked by Research.com in 2026. The highlighted bar marks where Say Kee Ong sits on this spectrum.

30 D-Index: 12 scientists 31 D-Index: 26 scientists 32 D-Index: 51 scientists 33 D-Index: 88 scientists 34 D-Index: 123 scientists 35 D-Index: 163 scientists 36 D-Index: 206 scientists 37 D-Index: 267 scientists 38 D-Index: 265 scientists 39 D-Index: 275 scientists 40 D-Index: 321 scientists 41 D-Index: 343 scientists 42 D-Index: 305 scientists 43 D-Index: 336 scientists 44 D-Index: 330 scientists 45 D-Index: 348 scientists 46 D-Index: 291 scientists 47 D-Index: 275 scientists 48 D-Index: 272 scientists 49 D-Index: 273 scientists 50 D-Index: 263 scientists 51 D-Index: 232 scientists 52 D-Index: 266 scientists 53 D-Index: 217 scientists 54 D-Index: 199 scientists 55 D-Index: 177 scientists 56 D-Index: 202 scientists 57 D-Index: 204 scientists 58 D-Index: 166 scientists 59 D-Index: 177 scientists 60 D-Index: 166 scientists 61 D-Index: 152 scientists 62 D-Index: 143 scientists 63 D-Index: 150 scientists 64 D-Index: 124 scientists 65 D-Index: 119 scientists 66 D-Index: 120 scientists 67 D-Index: 118 scientists 68 D-Index: 82 scientists 69 D-Index: 98 scientists 70 D-Index: 94 scientists 71 D-Index: 105 scientists 72 D-Index: 74 scientists 73 D-Index: 84 scientists 74 D-Index: 70 scientists 75 D-Index: 67 scientists 76 D-Index: 78 scientists 77 D-Index: 60 scientists 78 D-Index: 59 scientists 79 D-Index: 52 scientists 80 D-Index: 47 scientists 81 D-Index: 38 scientists 82 D-Index: 48 scientists 83 D-Index: 42 scientists 84 D-Index: 42 scientists 85 D-Index: 43 scientists 86 D-Index: 29 scientists 87 D-Index: 37 scientists 88 D-Index: 29 scientists 89 D-Index: 30 scientists 90 D-Index: 34 scientists 91 D-Index: 20 scientists 92 D-Index: 22 scientists 93 D-Index: 17 scientists 94 D-Index: 19 scientists 95 D-Index: 24 scientists 96 D-Index: 21 scientists 97 D-Index: 20 scientists 98 D-Index: 24 scientists 99 D-Index: 17 scientists 100 D-Index: 17 scientists 101 D-Index: 21 scientists 102 D-Index: 25 scientists 103 D-Index: 18 scientists 104 D-Index: 26 scientists 105 D-Index: 19 scientists 106 D-Index: 15 scientists 107 D-Index: 10 scientists 108 D-Index: 13 scientists 109 D-Index: 15 scientists 110 D-Index: 12 scientists 111 D-Index: 8 scientists 112 D-Index: 7 scientists 113 D-Index: 9 scientists 114 D-Index: 6 scientists 115 D-Index: 12 scientists 116 D-Index: 7 scientists 117 D-Index: 8 scientists 118 D-Index: 3 scientists 119 D-Index: 5 scientists 120 D-Index: 7 scientists 121 D-Index: 2 scientists 122 D-Index: 4 scientists 123 D-Index: 8 scientists 124 D-Index: 7 scientists 125+ D-Index: 99 scientists
30 D-Index 125+

This scientist: 38 D-Index — 12th percentile

12% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 125 D-Index or more.

Overview

Say Kee Ong is affiliated with Iowa State University in the United States and has a research portfolio spanning engineering and environmental science. Their work addresses key challenges in water resources management, extraction processes, and the application of advanced computational methods for process optimization.

Their recent research contributions include the following papers:

  • "Parametric study of the progressive freeze concentration for desalination" (2021) published in Desalination
  • "Reinforcement learning applied to wastewater treatment process control optimization: Approaches, challenges, and path forward" (2023) published in Critical Reviews in Environmental Science and Technology
  • "Systematic Performance Evaluation of Reinforcement Learning Algorithms Applied to Wastewater Treatment Control Optimization" (2023) published in Environmental Science & Technology
  • "Marine polysaccharide-based hydrogels for critical materials selective removal and recovery: A review" (2023) published in Coordination Chemistry Reviews
  • "Biological phosphorus removal and its microbial community in a modified full-scale activated sludge system under dry and wet weather dynamics" (2022) published in Water Research

Their frequent coauthors include:

  • Kaoru Ikuma
  • John Rey Apostol Romal
  • Henry C. Croll
  • Soumik Sarkar
  • Sina Moharramzadeh

The scientist has published extensively in the following venues:

  • Water Research
  • Desalination
  • Critical Reviews in Environmental Science and Technology
  • Environmental Science & Technology
  • Coordination Chemistry Reviews

Their main fields of study include:

  • Engineering (13 publications)
  • Environmental Science (9 publications)

In subfields, their research focuses on:

  • Artificial Intelligence (5 publications)
  • Mechanical Engineering (4 publications)
  • Water Science and Technology (3 publications)
  • Biomaterials (3 publications)
  • Organic Chemistry (3 publications)

The primary research topics covered include:

  • Extraction and Separation Processes
  • Freezing and Crystallization Processes
  • Smart Grid Energy Management
  • Data Stream Mining Techniques
  • Water resources management and optimization
  • Reinforcement Learning in Robotics
  • Hydrogels: synthesis, properties, applications

Best Publications

  • Fate, Transport, and Biodegradation of Natural Estrogens in the Environment and Engineered Systems

    Samir Kumar Khanal;Bin Xie;Michael L. Thompson;Shihwu Sung

  • Factors affecting EDTA extraction of lead from lead-contaminated soils.

    Chulsung Kim;Yongwoo Lee;Say Kee Ong

  • Effect of organic carbon and pH on soil sorption of sulfamethazine

    Warisara Lertpaitoonpan;Say Kee Ong;Thomas B. Moorman

  • Mechanisms for Trichloroethylene Vapor Sorption onto Soil Minerals

    Say Kee Ong;Leonard W. Lion

  • Degradation and metabolite production of tylosin in anaerobic and aerobic swine-manure lagoons.

    A. C. Kolz;T. B. Moorman;S. K. Ong;K. D. Scoggin

  • Wastewater Engineering

    Unknown

  • Effects of soil properties and moisture on the sorption of trichloroethylene vapor

    Say Kee Ong;Leonard W. Lion

  • A rapid in situ respiration test for measuring aerobic biodegradation rates of hydrocarbons in soil

    Robert E. Hinchee;Say Kee Ong

  • Use of solvents to enhance PAH biodegradation of coal tar-contaminated soils.

    Pak-Hing Lee;Say Kee Ong;Johanshir Golchin;G.L.(Sam) Nelson

  • Effects of heavy metals on nitrifying bacteria

    Yong-Woo Lee;Say-Kee Ong;Chikashi Sato

  • Decomposition of nitrite under various pH and aeration conditions

    Washington Braida;Say Kee Ong

  • Recycling of lead-contaminated EDTA wastewater.

    Chulsung Kim;Say-Kee Ong

  • Sorption of tylosin onto swine manure.

    Angela C. Kolz;Say Kee Ong;T.B. Moorman

  • Influence of anoxic and anaerobic hydraulic retention time on biological nitrogen and phosphorus removal in a membrane bioreactor

    Patrick Brown;Say Kee Ong;Yong-Woo Lee

  • Remediation Technologies for Soils and Groundwater

    Alok Bhandari;Rao Y. Surampalli;Pascale Champagne;Say Kee Ong

  • Influence of Porous Media, Airflow Rate, and Air Channel Spacing on Benzene NAPL Removal during Air Sparging

    Shane W. Rogers;Say Kee Ong

  • Impact of solids residence time on biological nutrient removal performance of membrane bioreactor.

    Cagatayhan Bekir Ersu;Say Kee Ong;Ertan Arslankaya;Yong-Woo Lee

  • Effect of pH on transport of Pb2+, Mn2+, Zn2+ and Ni2+ through lateritic soil: column experiments and transport modeling.

    Srilert Chotpantarat;Say Kee Ong;Chakkaphan Sutthirat;Khemarath Osathaphan

  • Fluorescent In Situ Hybridization and Micro-autoradiography Applied to Ecophysiology in Soil

    Shane W. Rogers;Thomas B. Moorman;Say Kee Ong

  • Comparison of recirculation configurations for biological nutrient removal in a membrane bioreactor.

    Cagatayhan Bekir Ersu;Say Kee Ong;Ertan Arslankaya;Patrick Brown

  • Air sparging effectiveness: laboratory characterization of air-channel mass transfer zone for VOC volatilization.

    Washington J Braida;Say Kee Ong

Frequent Co-Authors

Thomas B. Moorman
Thomas B. Moorman Agricultural Research Service
Rao Y. Surampalli
Rao Y. Surampalli University of Nebraska–Lincoln
Leonard W. Lion
Leonard W. Lion Cornell University
Irene M.C. Lo
Irene M.C. Lo Hong Kong University of Science and Technology
Pascale Champagne
Pascale Champagne Queen's University
Samir Kumar Khanal
Samir Kumar Khanal University of Hawaii at Manoa
Kejin Wang
Kejin Wang Iowa State University
Shihwu Sung
Shihwu Sung University of Hawaii at Hilo
Rajeshwar Dayal Tyagi
Rajeshwar Dayal Tyagi Institut National de la Recherche Scientifique
Joel G. Burken
Joel G. Burken Missouri University of Science and Technology

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