World's Best Scientists 2026 revealed!
Nagamany Nirmalakhandan

Nagamany Nirmalakhandan

D-Index & Metrics

Environmental Sciences

D-Index
59
Citations
9683
World Ranking
3167
National Ranking
1221

Engineering and Technology

D-Index
56
Citations
9157
World Ranking
2904
National Ranking
876

Nagamany Nirmalakhandan 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 Nagamany Nirmalakhandan 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: 163 publications — 33rd percentile

33% of scientists in this discipline score the same or lower.

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

Nagamany Nirmalakhandan 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 Nagamany Nirmalakhandan 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: 56 D-Index — 72nd percentile

72% of scientists in this discipline score the same or lower.

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

Overview

Nagamany Nirmalakhandan is affiliated with New Mexico State University in the United States. Their research primarily focuses on environmental science, with significant contributions to industrial and manufacturing engineering, water science and technology, pollution, biomedical engineering, and renewable energy, sustainability, and the environment.

The scientist's work encompasses several specialized topics, including:

  • Constructed Wetlands for Wastewater Treatment
  • Phosphorus and nutrient management
  • Membrane Separation Technologies
  • Wastewater Treatment and Reuse
  • Wastewater Treatment and Nitrogen Removal
  • Membrane-based Ion Separation Techniques
  • Algal biology and biofuel production

They have published extensively in various journals. Frequent publication venues include:

  • Algal Research
  • Journal of Environmental Management
  • SSRN Electronic Journal
  • Journal of Water Process Engineering
  • Bioresource Technology

Recent publications by Nagamany Nirmalakhandan include:

  • Wastewater infrastructure for sustainable cities: assessment based on UN sustainable development goals (SDGs), 2020, International Journal of Sustainable Development & World Ecology
  • Nitrogen-Fertilizer Recovery from the Centrate of Anaerobically Digested Sludge, 2020, Environmental Science & Technology Letters
  • Removal and recovery of nutrients from municipal sewage: Algal vs. conventional approaches, 2020, Water Research
  • Evaluating wastewater treatment infrastructure systems based on UN Sustainable Development Goals and targets, 2021, Journal of Cleaner Production
  • Metagenomic insights into virus removal performance of an algal-based wastewater treatment system utilizing Galdieria sulphuraria, 2020, Algal Research

The scientist collaborates frequently with a core group of coauthors, which includes:

  • I.S.A. Abeysiriwardana-Arachchige
  • S.P. Munasinghe-Arachchige
  • H.M.K. Delanka-Pedige
  • Catherine E. Brewer
  • Yanyan Zhang

Best Publications

  • Renewable and sustainable approaches for desalination

    Veera Gnaneswar Gude;Nagamany Nirmalakhandan;Shuguang Deng

  • Optimization of direct conversion of wet algae to biodiesel under supercritical methanol conditions

    Prafulla D. Patil;Veera Gnaneswar Gude;Aravind Mannarswamy;Shuguang Deng

  • Performance evaluation of an activated sludge system for removing petroleum hydrocarbons from oilfield produced water

    Gilbert T Tellez;N Nirmalakhandan;Jorge L Gardea-Torresdey

  • Microwave energy potential for biodiesel production

    Veera Gnaneswar Gude;Prafulla Patil;Edith Martinez-Guerra;Shuguang Deng

  • Optimization of microwave-assisted transesterification of dry algal biomass using response surface methodology.

    Prafulla D. Patil;Veera Gnaneswar Gude;Aravind Mannarswamy;Peter Cooke

  • Comparison of direct transesterification of algal biomass under supercritical methanol and microwave irradiation conditions

    Prafulla D. Patil;Veera Gnaneswar Gude;Aravind Mannarswamy;Peter Cooke

  • Anaerobic fermentation of cattle manure: modeling of hydrolysis and acidogenesis.

    M. Myint;N. Nirmalakhandan;R.E. Speece

  • QSAR model for predicting Henry's constant

    Nagamany N. Nirmalakhandan;Richard E. Speece

  • Temperature effect on hydrothermal liquefaction of Nannochloropsis gaditana and Chlorella sp.

    Harvind Kumar Reddy;Tapaswy Muppaneni;Sundaravadivelnathan Ponnusamy;Nilusha Sudasinghe

  • Low temperature desalination using solar collectors augmented by thermal energy storage

    Veera Gnaneswar Gude;Nagamany Nirmalakhandan;Shuguang Deng;Anand Maganti

  • Removal of dissolved organic carbon and nutrients from urban wastewaters by Galdieria sulphuraria: Laboratory to field scale demonstration

    S.M. Henkanatte-Gedera;T. Selvaratnam;M. Karbakhshravari;M. Myint

  • Modeling dark fermentation for biohydrogen production: ADM1-based model vs. Gompertz model

    Venkataramana Gadhamshetty;Yalini Arudchelvam;Nagamany Nirmalakhandan;David C. Johnson

  • Evaluation of an ozonation system for reduced waste sludge generation.

    E. Egemen;J. Corpening;N. Nirmalakhandan

  • Hydrothermal liquefaction of high- and low-lipid algae: Bio-crude oil chemistry

    Feng Cheng;Zheng Cui;Lin Chen;Jacqueline Jarvis

  • Prediction of aqueous solubility of organic chemicals based on molecular structure

    Nagamany N. Nirmalakhandan;Richard E. Speece

  • Feasibility of microalgal cultivation in a pilot-scale airlift-driven raceway reactor.

    Balachandran Ketheesan;Nagamany Nirmalakhandan

  • Desalination using solar energy: Towards sustainability

    Veera Gnaneswar Gude;Nagamany Nirmalakhandan;Shuguang Deng

  • Evaluation of a thermo-tolerant acidophilic alga, Galdieria sulphuraria, for nutrient removal from urban wastewaters.

    T. Selvaratnam;A.K. Pegallapati;F. Montelya;G. Rodriguez

  • Use of QSAR models in predicting joint effects in multi-component mixtures of organic chemicals

    S. Xu;N. Nirmalakhandan

  • Toxicity of mixtures of organic chemicals to microorganisms

    N Nirmalakhandan;V Arulgnanendran;M Mohsin;B Sun

Frequent Co-Authors

Shuguang Deng
Shuguang Deng Arizona State University
Veera Gnaneswar Gude
Veera Gnaneswar Gude Mississippi State University
Peter H. Cooke
Peter H. Cooke New Mexico State University
Pei Xu
Pei Xu New Mexico State University
Jorge L. Gardea-Torresdey
Jorge L. Gardea-Torresdey The University of Texas at El Paso
Timothy J. Strathmann
Timothy J. Strathmann Colorado School of Mines
Samir Kumar Khanal
Samir Kumar Khanal University of Hawaii at Manoa
Richard T. Sayre
Richard T. Sayre Los Alamos National Laboratory
Judith K. Brown
Judith K. Brown University of Arizona

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