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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 57 10931 9866 29 28 174 16654

Mehmet Kobya publications per year

The chart shows the history of publications by Mehmet Kobya between 1996 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Mehmet Kobya published across 31 years, from 1996 to 2026, averaging 6.1 papers a year. Output peaked at 15 publications in 2018. 18 of the 189 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1996 to 2026. Vertical axis: number of publications, 0 to 15. Peak 15 publications in 2018. 1996: 2 publications 1997: 1 publication 1998: 0 publications 1999: 0 publications 2000: 3 publications 2001: 1 publication 2002: 2 publications 2003: 2 publications 2004: 6 publications 2005: 3 publications 2006: 7 publications 2007: 5 publications 2008: 5 publications 2009: 4 publications 2010: 5 publications 2011: 4 publications 2012: 6 publications 2013: 4 publications 2014: 6 publications 2015: 10 publications 2016: 4 publications 2017: 9 publications 2018: 15 publications 2019: 14 publications 2020: 12 publications 2021: 12 publications 2022: 11 publications 2023: 10 publications 2024: 8 publications 2025: 12 publications 2026: 6 publications
1996 2026

189 publications in total across all disciplines

View publications per year as a table
Mehmet Kobya: publications per year, 1996 to 2026
Year Publications
1996 2
1997 1
1998 0
1999 0
2000 3
2001 1
2002 2
2003 2
2004 6
2005 3
2006 7
2007 5
2008 5
2009 4
2010 5
2011 4
2012 6
2013 4
2014 6
2015 10
2016 4
2017 9
2018 15
2019 14
2020 12
2021 12
2022 11
2023 10
2024 8
2025 12
2026 6
Total 189
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Mehmet Kobya publications per year - data summary

  • Mehmet Kobya, a Chemistry scholar from Gebze Technical University, has 189 publications recorded across 31 years, from 1996 to 2026.
  • The oldest publication on record dates to 1996 and the most recent to 2026.
  • The most productive year is 2018, with 15 publications.
  • The least productive years with any output are 1997 and 2001, with 1 publication each.
  • 2 of the 31 years in the span carry no publications at all (1998 and 1999).
  • The rate of publication averages 6.1 papers per year over the whole span, or 6.5 per year counting only the 29 years with at least one publication.
  • The last 5 years on the chart (2022-2026) hold 47 publications, 25% of the career total.
  • Split into equal eras - 1996-2006: 27 publications (2.5 per year); 2007-2017: 62 publications (5.6 per year); 2018-2026: 100 publications (11.1 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Mehmet Kobya 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 Mehmet Kobya sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 161–180 publications, is where this scientist sits. 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
61–80 publications 1,295+

This scientist: 174 publications — 23rd percentile

23% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350 174
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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Mehmet Kobya publication distribution in Chemistry in 2026 - data summary

  • The chart plots the publication count of all 17,934 Chemistry scientists ranked by Research.com in 2026, grouped into 63 ranges running from 61–80 to 1,295+ publications.
  • Mehmet Kobya, a Chemistry scholar from Gebze Technical University, records 174 publications - the 23rd percentile of the discipline.
  • 23% of ranked Chemistry scientists score the same or lower than Mehmet Kobya, and about 77% score higher.
  • The median of the discipline falls in the 241–260 publications range, and Mehmet Kobya ranks below the median.
  • The most crowded range is 161–180 publications, holding 1,350 scientists (8% of the field).
  • 77% of the field sits in the lowest quarter of the value range (up to 361–380 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 1,295 publications or more, 100 scientists in all (<1% of the field).

Mehmet Kobya 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 Mehmet Kobya sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 56–57 D-Index, is where this scientist sits. 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
40–41 D-Index 159+

This scientist: 57 D-Index — 39th percentile

39% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051 57
58–59 930
60–61 882
62–63 834
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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Mehmet Kobya D-index placement in Chemistry in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 17,934 Chemistry scientists ranked by Research.com in 2026, grouped into 61 ranges running from 40–41 to 159+ D-Index.
  • Mehmet Kobya, a Chemistry scholar from Gebze Technical University, records 57 D-Index - the 39th percentile of the discipline.
  • 39% of ranked Chemistry scientists score the same or lower than Mehmet Kobya, and about 61% score higher.
  • The median of the discipline falls in the 62–63 D-Index range, and Mehmet Kobya ranks below the median.
  • The most crowded range is 56–57 D-Index, holding 1,051 scientists (6% of the field).
  • 70% of the field sits in the lowest quarter of the value range (up to 70–71 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 159 D-Index or more, 98 scientists in all (<1% of the field).

Research.com Recognitions

  • The Science Academy Society of Turkey - Bilim Akademisi Environmental Sciences
  • The Science Academy Society of Turkey - Bilim Akademisi Environmental Sciences
  • The Science Academy Society of Turkey - Bilim Akademisi Environmental Sciences
  • The Science Academy Society of Turkey - Bilim Akademisi Environmental Sciences
  • The Science Academy Society of Turkey - Bilim Akademisi Environmental Sciences
  • The Science Academy Society of Turkey - Bilim Akademisi Environmental Sciences
  • The Science Academy Society of Turkey - Bilim Akademisi Environmental Sciences
  • The Science Academy Society of Turkey - Bilim Akademisi Environmental Sciences

Overview

Mehmet Kobya is a researcher affiliated with Gebze Technical University in Turkey, specializing primarily in Environmental Science. Their research predominantly focuses on water-related scientific fields, encompassing Water Science and Technology, Materials Chemistry, Renewable Energy, Sustainability and the Environment, Industrial and Manufacturing Engineering, and Environmental Chemistry.

Their scholarly work engages with several key topics, including:

  • Advanced oxidation water treatment
  • Advanced Photocatalysis Techniques
  • Layered Double Hydroxides Synthesis and Applications
  • Membrane Separation Technologies
  • Arsenic contamination and mitigation
  • Electrochemical Analysis and Applications
  • Environmental remediation with nanomaterials

Kobya's recent research outputs include a range of publications across notable scientific journals. Among these are:

  • "Service life and stability of electrodes applied in electrochemical advanced oxidation processes: A comprehensive review," 2020, Journal of Industrial and Engineering Chemistry
  • "A review on treatment of membrane concentrates generated from landfill leachate treatment processes," 2020, Separation and Purification Technology
  • "Graphene-based ZnCr layered double hydroxide nanocomposites as bactericidal agents with high sonophotocatalytic performances for degradation of rifampicin," 2021, Chemosphere
  • "Arsenic removal from groundwater using an aerated electrocoagulation reactor with 3D Al electrodes in the presence of anions," 2020, Chemosphere
  • "Degradation of thiocyanate by electrochemical oxidation process in coke oven wastewater: Role of operative parameters and mechanistic study," 2020, Chemosphere

The researcher frequently publishes in several key journals, including:

  • Chemosphere
  • Ultrasonics Sonochemistry
  • Separation and Purification Technology
  • Process Safety and Environmental Protection
  • Journal of Water Process Engineering

Kobya collaborates regularly with several co-authors, including Alireza Khataee, Erhan Gengeç, Nawid Ahmad Akhtar, A. Yağmur Gören, and Tannaz Sadeghi Rad.

Their scientific contributions have been recognized by The Science Academy Society of Turkey - Bilim Akademisi in the field of Environmental Sciences.

Best Publications

  • Treatment of textile wastewaters by electrocoagulation using iron and aluminum electrodes.

    Mehmet Kobya;Orhan Taner Can;Mahmut Bayramoglu

  • Adsorption of heavy metal ions from aqueous solutions by activated carbon prepared from apricot stone.

    M. Kobya;E. Demirbas;E. Senturk;M. Ince

  • Adsorption kinetics for the removal of chromium (VI) from aqueous solutions on the activated carbons prepared from agricultural wastes

    Erhan Demirbas;Mehmet Kobya;Elif Senturk;Tuncay Ozkan

  • Operating cost analysis of electrocoagulation of textile dye wastewater

    Mahmut Bayramoglu;Mehmet Kobya;Orhan Taner Can;Mustafa Sozbir

  • Adsorption kinetics and equilibrium of copper from aqueous solutions using hazelnut shell activated carbon

    E. Demirbas;N. Dizge;M.T. Sulak;M. Kobya

  • Treatment of the textile wastewater by combined electrocoagulation.

    O.T. Can;M. Kobya;E. Demirbas;M. Bayramoglu

  • Removal of Cr(VI) from aqueous solutions by adsorption onto hazelnut shell activated carbon: kinetic and equilibrium studies

    M. Kobya

  • Treatment of potato chips manufacturing wastewater by electrocoagulation

    M. Kobya;H. Hiz;E. Senturk;C. Aydiner

  • Adsorption of reactive dyes from aqueous solutions by fly ash: kinetic and equilibrium studies.

    N. Dizge;C. Aydiner;E. Demirbas;M. Kobya

  • Decolorization of Reactive Dye Solutions by Electrocoagulation Using Aluminum Electrodes

    O. T. Can;M. Bayramoglu;M. Kobya

  • Treatment of the textile wastewater by electrocoagulation: Economical evaluation

    Mahmut Bayramoglu;Murat Eyvaz;Mehmet Kobya

  • Treatment of levafix orange textile dye solution by electrocoagulation.

    M. Kobya;E. Demirbas;O.T. Can;M. Bayramoglu

  • Treatment of poultry slaughterhouse wastewaters by electrocoagulation.

    Mehmet Kobya;Elif Senturk;Mahmut Bayramoglu

  • Adsorption kinetics of a basic dye from aqueous solutions onto apricot stone activated carbon.

    E. Demirbas;M. Kobya;M.T. Sulak

  • Removal of Astrazon Yellow 7GL from aqueous solutions by adsorption onto wheat bran

    Sulak Mt;Demirbas E;Kobya M

  • Removal of Ni(II) from aqueous solution by adsorption onto hazelnut shell activated carbon: equilibrium studies.

    E. Demirbaş;M. Kobya;S. Öncel;S. Şencan

  • Removal of arsenic from drinking water by the electrocoagulation using Fe and Al electrodes

    M. Kobya;U. Gebologlu;F. Ulu;S. Oncel

  • A comparative study of chemical precipitation and electrocoagulation for treatment of coal acid drainage wastewater

    M.S. Oncel;A. Muhcu;E. Demirbas;M. Kobya

  • Treatment of the baker's yeast wastewater by electrocoagulation.

    M. Kobya;S. Delipinar

  • Techno-economical evaluation of electrocoagulation for the textile wastewater using different electrode connections

    Mehmet Kobya;Mahmut Bayramoglu;Murat Eyvaz

  • Fabrication of NiFe layered double hydroxide/reduced graphene oxide (NiFe-LDH/rGO) nanocomposite with enhanced sonophotocatalytic activity for the degradation of moxifloxacin

    Alireza Khataee;Alireza Khataee;Tannaz Sadeghi Rad;Sahand Nikzat;Aydin Hassani

Frequent Co-Authors

Alireza Khataee
Alireza Khataee Istanbul Technical University
Mika Sillanpää
Mika Sillanpää University of Johannesburg
Vahid Vatanpour
Vahid Vatanpour Kharazmi University
Aydin Hassani
Aydin Hassani Near East University
Eakalak Khan
Eakalak Khan University of Nevada, Las Vegas
Ismail Koyuncu
Ismail Koyuncu Istanbul Technical University

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