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Environmental Sciences
India
2026

D-Index & Metrics

Environmental Sciences

D-Index
92
Citations
31786
World Ranking
539
National Ranking
4

Sunita Varjani 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 Sunita Varjani 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: 390 publications — 93rd percentile

93% of scientists in this discipline score the same or lower.

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

Sunita Varjani 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 Sunita Varjani 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: 92 D-Index — 95th percentile

95% 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 India Leader Award
  • 2025 - Research.com Environmental Sciences in India Leader Award

Overview

Sunita Varjani is a researcher affiliated with the University of Petroleum and Energy Studies in India. Their work primarily spans the fields of Environmental Science and Engineering, with a strong focus on topics related to biotechnology, renewable energy, and environmental remediation.

Their recent publications highlight involvement in diverse areas, including microbial degradation, biochar production, wastewater treatment, and lignocellulosic biomass pyrolysis. Notable papers include:

  • A critical review on the biochar production techniques, characterization, stability and applications for circular bioeconomy (2020), Biotechnology Reports
  • A critical review on advances in the practices and perspectives for the treatment of dye industry wastewater (2020), Bioengineered
  • Microbial degradation of dyes: An overview (2020), Bioresource Technology
  • Lignocellulosic biomass-based pyrolysis: A comprehensive review (2021), Chemosphere
  • A Review on Occurrence of Pesticides in Environment and Current Technologies for Their Remediation and Management (2020), Indian Journal of Microbiology

They frequently publish in journals such as Bioresource Technology, The Science of The Total Environment, Chemosphere, Environmental Research, and Bioengineered.

Sunita Varjani's research interests encompass multiple interconnected topics:

  • Biofuel production and bioconversion
  • Algal biology and biofuel production
  • Anaerobic Digestion and Biogas Production
  • Microbial bioremediation and biosurfactants
  • Microbial Fuel Cells and Bioremediation
  • Microbial Metabolic Engineering and Bioproduction
  • Municipal Solid Waste Management

Their work also intersects with several specialized subfields, including Biomedical Engineering, Pollution, Industrial and Manufacturing Engineering, Molecular Biology, and Renewable Energy, Sustainability and the Environment.

Collaborative efforts form an important part of their research profile with frequent coauthors including Ashok Pandey, Huu Hao Ngo, Jonathan W.C. Wong, Mukesh Kumar Awasthi, and Xuan-Thanh Bui.

In addition to articles, Sunita Varjani has contributed to book publications, including a title published by the Centre National de la Recherche Scientifique focusing on emerging organic micropollutants.

Best Publications

  • Microbial degradation of petroleum hydrocarbons.

    Sunita J. Varjani

  • A critical review on the biochar production techniques, characterization, stability and applications for circular bioeconomy.

    P.R. Yaashikaa;P. Senthil Kumar;Sunita Varjani;A. Saravanan

  • A critical review on advances in the practices and perspectives for the treatment of dye industry wastewater.

    Toral Shindhal;Parita Rakholiya;Sunita Varjani;Ashok Pandey

  • A new look on factors affecting microbial degradation of petroleum hydrocarbon pollutants

    Sunita J. Varjani;Vivek N. Upasani

  • Microbial degradation of dyes: An overview.

    Sunita Varjani;Parita Rakholiya;How Yong Ng;Siming You

  • Microbiological insights into anaerobic digestion for biogas, hydrogen or volatile fatty acids (VFAs): a review

    Unknown

  • Lignocellulosic biomass-based pyrolysis: A comprehensive review

    Yogalakshmi K N;Poornima Devi T;Sivashanmugam P;Kavitha S

  • A review on photochemical, biochemical and electrochemical transformation of CO2 into value-added products

    P.R. Yaashikaa;P. Senthil Kumar;Sunita J. Varjani;A. Saravanan

  • Critical review on biosurfactant analysis, purification and characterization using rhamnolipid as a model biosurfactant.

    Sunita J. Varjani;Vivek N. Upasani

  • A Review on Occurrence of Pesticides in Environment and Current Technologies for Their Remediation and Management

    K. S. Rajmohan;Ramya Chandrasekaran;Sunita Varjani

  • Advances in production and application of biochar from lignocellulosic feedstocks for remediation of environmental pollutants.

    P.R. Yaashikaa;P. Senthil Kumar;Sunita J. Varjani;A. Saravanan

  • Sustainable processing of food waste for production of bio-based products for circular bioeconomy.

    Poonam Sharma;Vivek K. Gaur;Ranjna Sirohi;Sunita Varjani

  • A review on biosurfactants: properties, applications and current developments.

    Anoop R. Markande;Divya Patel;Sunita Varjani

  • Production and beneficial impact of biochar for environmental application: A comprehensive review.

    Yuwen Zhou;Shiyi Qin;Shivpal Verma;Taner Sar

  • Recycling of cathode material from spent lithium-ion batteries: Challenges and future perspectives.

    Unknown

  • Plastic pollutants: effective waste management for pollution control and abatement

    Kunju Vaikarar Soundararajan Rajmohan;Chandrasekaran Ramya;Manakkal Raja Viswanathan;Sunita Varjani

  • Biodegradation of petroleum hydrocarbons by oleophilic strain of Pseudomonas aeruginosa NCIM 5514

    Sunita J. Varjani;Vivek N. Upasani

  • Current research trends on micro- and nano-plastics as an emerging threat to global environment: A review.

    Manish Kumar;Hongyu Chen;Surendra Sarsaiya;Shiyi Qin

  • Valorization of agro-industrial wastes for biorefinery process and circular bioeconomy: A critical review.

    P.R. Yaashikaa;P. Senthil Kumar;Sunita Varjani

  • Conversion of food and kitchen waste to value-added products

    Raveendran Sindhu;Edgard Gnansounou;Sharrel Rebello;Parameswaran Binod

  • Comprehensive review on toxicity of persistent organic pollutants from petroleum refinery waste and their degradation by microorganisms.

    Sunita J. Varjani;Edgard Gnansounou;Ashok Pandey

  • Synergistic ex-situ biodegradation of crude oil by halotolerant bacterial consortium of indigenous strains isolated from on shore sites of Gujarat, India

    Sunita J. Varjani;Dolly P. Rana;Ajay K. Jain;Surendra Bateja

  • Treatment of wastewater from petroleum industry: current practices and perspectives

    Sunita Varjani;Rutu Joshi;Vijay Kumar Srivastava;Huu Hao Ngo

Frequent Co-Authors

Ashok Pandey
Ashok Pandey Indian Institute of Toxicology Research
Huu Hao Ngo
Huu Hao Ngo University of Technology Sydney
Jo Shu Chang
Jo Shu Chang National Cheng Kung University
P. Senthil Kumar
P. Senthil Kumar Pondicherry University
Zengqiang Zhang
Zengqiang Zhang Northwest A&F University
Wenshan Guo
Wenshan Guo University of Technology Sydney
Mohammad J. Taherzadeh
Mohammad J. Taherzadeh University of Borås
Jonathan W.C. Wong
Jonathan W.C. Wong Hong Kong Baptist University
Edgard Gnansounou
Edgard Gnansounou École Polytechnique Fédérale de Lausanne

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