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Environmental Sciences
New Zealand
2026

D-Index & Metrics

Environmental Sciences

D-Index
74
Citations
23524
World Ranking
1326
National Ranking
3

Ajit K. Sarmah 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 Ajit K. Sarmah 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: 173 publications — 53rd percentile

53% of scientists in this discipline score the same or lower.

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

Ajit K. Sarmah 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 Ajit K. Sarmah 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: 74 D-Index — 87th percentile

87% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2026 - Research.com Environmental Sciences in New Zealand Leader Award
  • 2025 - Research.com Environmental Sciences in New Zealand Leader Award

Overview

Ajit K. Sarmah is affiliated with the University of Auckland in New Zealand and has contributed extensively to the fields of Environmental Science and Engineering. Their research spans a range of topics connected to pollution control, waste management, and environmental impact, with a notable focus on adsorption techniques and the management of pollutants in various environmental matrices.

The scientist's work prominently features investigations into:

  • Adsorption and biosorption for pollutant removal
  • Recycling and Waste Management Techniques
  • Microplastics and Plastic Pollution
  • Heavy metals in environment
  • Soil and Unsaturated Flow
  • Landfill Environmental Impact Studies
  • Pharmaceutical and Antibiotic Environmental Impacts

The main fields of study in Sarmah's research portfolio include Environmental Science, evidenced by 111 publications, and Engineering, with 68 related papers. Their subfields encompass Pollution, Industrial and Manufacturing Engineering, Water Science and Technology, Civil and Structural Engineering, and Biomedical Engineering.

Ajit K. Sarmah has a notable presence in several scientific journals and publication venues, frequently contributing to:

  • The Science of The Total Environment (21 publications)
  • Environmental Pollution (16 publications)
  • Journal of Hazardous Materials (4 publications)
  • Construction and Building Materials (3 publications)
  • Current Opinion in Environmental Science & Health (3 publications)

Collaboration is also a key aspect of Sarmah's work, with frequent co-authors including Sanandam Bordoloi, Febelyn Reguyal, Hailong Wang, Brajesh Dubey, and Jörg Rinklebe.

A selection of recent papers authored or co-authored by Sarmah includes:

  • "Multifunctional applications of biochar beyond carbon storage," 2021, International Materials Reviews
  • "Interactions between microplastics, pharmaceuticals and personal care products: Implications for vector transport," 2021, Environment International
  • "Hydrothermal carbonization of renewable waste biomass for solid biofuel production: A discussion on process mechanism, the influence of process parameters, environmental performance and fuel properties of hydrochar," 2020, Renewable and Sustainable Energy Reviews
  • "Novel Fe-Mn binary oxide-biochar as an adsorbent for removing Cd(II) from aqueous solutions," 2020, Chemical Engineering Journal
  • "Soil acidification and the liming potential of biochar," 2022, Environmental Pollution

Best Publications

  • A global perspective on the use, sales, exposure pathways, occurrence, fate and effects of veterinary antibiotics (VAs) in the environment

    Ajit K. Sarmah;Michael T. Meyer;Alistair B.A. Boxall

  • Construction and demolition waste generation and properties of recycled aggregate concrete: A global perspective

    Ali Akhtar;Ajit K. Sarmah

  • Using biochar for remediation of soils contaminated with heavy metals and organic pollutants

    Xiaokai Zhang;Hailong Wang;Lizhi He;Kouping Lu

  • Biochar application to low fertility soils: A review of current status, and future prospects

    Ali El-Naggar;Ali El-Naggar;Sang Soo Lee;Jörg Rinklebe;Jörg Rinklebe;Muhammad Farooq;Muhammad Farooq

  • Biochar Application to Soil: Agronomic and Environmental Benefits and Unintended Consequences

    R.S. Kookana;A.K. Sarmah;L. Van Zwieten;E. Krull

  • Nanopriming technology for enhancing germination and starch metabolism of aged rice seeds using phytosynthesized silver nanoparticles

    Wuttipong Mahakham;Ajit K. Sarmah;Santi Maensiri;Piyada Theerakulpisut

  • Multifunctional applications of biochar beyond carbon storage

    Nanthi Bolan;Nanthi Bolan;Son A. Hoang;Jingzi Beiyuan;Souradeep Gupta

  • Interactions between microplastics, pharmaceuticals and personal care products: Implications for vector transport.

    Thilakshani Atugoda;Meththika Vithanage;Hasintha Wijesekara;Nanthi Bolan

  • Hydrothermal carbonization of renewable waste biomass for solid biofuel production: A discussion on process mechanism, the influence of process parameters, environmental performance and fuel properties of hydrochar

    Hari Bhakta Sharma;Ajit K. Sarmah;Brajesh Dubey

  • Lignocellulosic biorefinery as a model for sustainable development of biofuels and value added products

    Goldy De Bhowmick;Ajit K. Sarmah;Ramkrishna Sen

  • Sorption and dissipation of testosterone, estrogens, and their primary transformation products in soils and sediment.

    Linda S. Lee;Troy J. Strock;Ajit K. Sarmah;P. Suresh C. Rao

  • Novel biochar-concrete composites: Manufacturing, characterization and evaluation of the mechanical properties.

    Ali Akhtar;Ajit K. Sarmah

  • Hydrolysis of sulfonylurea herbicides in soils and aqueous solutions: a review.

    Unknown

  • Novel Fe-Mn binary oxide-biochar as an adsorbent for removing Cd(II) from aqueous solutions

    Guangcai Yin;Xiaowang Song;Lin Tao;Binoy Sarkar

  • Environmentally benign synthesis of phytochemicals-capped gold nanoparticles as nanopriming agent for promoting maize seed germination.

    Wuttipong Mahakham;Piyada Theerakulpisut;Santi Maensiri;Santi Phumying

  • Synthesis of magnetic biochar from pine sawdust via oxidative hydrolysis of FeCl2 for the removal sulfamethoxazole from aqueous solution.

    Febelyn Reguyal;Ajit K. Sarmah;Wei Gao

  • Sustainable in situ remediation of recalcitrant organic pollutants in groundwater with controlled release materials: A review

    David O'Connor;Deyi Hou;Yong Sik Ok;Yinan Song

  • Soil acidification and the liming potential of biochar

    Unknown

  • Adsorption mechanism of hexavalent chromium onto layered double hydroxides-based adsorbents: A systematic in-depth review.

    Hai Nguyen Tran;Dong Thanh Nguyen;Giang Truong Le;Fatma Tomul

  • Recognizing the challenges of anaerobic digestion: Critical steps toward improving biogas generation

    M Rasapoor;Brent Young;R Brar;Ajit Sarmah

  • A novel approach in organic waste utilization through biochar addition in wood/polypropylene composites

    Oisik Das;Ajit K. Sarmah;Debes Bhattacharyya

  • A survey of endocrine disrupting chemicals (EDCs) in municipal sewage and animal waste effluents in the Waikato region of New Zealand.

    A.K. Sarmah;G.L. Northcott;Frederic Leusch;L.A. Tremblay

  • A feasibility study of agricultural and sewage biomass as biochar, bioenergy and biocomposite feedstock: Production, characterization and potential applications

    Prakash Srinivasan;Ajit K. Sarmah;Ron Smernik;Oisik Das

Frequent Co-Authors

Debes Bhattacharyya
Debes Bhattacharyya University of Auckland
Hailong Wang
Hailong Wang Foshan University
Yong Sik Ok
Yong Sik Ok Korea University
Jörg Rinklebe
Jörg Rinklebe University of Wuppertal
Brajesh Dubey
Brajesh Dubey Indian Institute of Technology Kharagpur
Rai S. Kookana
Rai S. Kookana Commonwealth Scientific and Industrial Research Organisation
Nanthi Bolan
Nanthi Bolan University of Western Australia
Ramkrishna Sen
Ramkrishna Sen Indian Institute of Technology Kharagpur
Murray E. Close
Murray E. Close Institute of Environmental Science and Research
Younes Ghasemi
Younes Ghasemi Shiraz University of Medical Sciences

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