Citation Rankings
Highly Cited Researchers
King University Highly Cited Researchers CitationEngineering & Technology / Environmental Science & Engineering Rankings (Sort by last 6 years Citation Index) 2025
The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :1
Environmental Engineering
Green Chemistry
Chemical Engineering
Water Treatment
Environmental
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
88,714
64,592
0.728
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :2
Water desalination
Renewable energy
Desalination economics
Innovative desalination technologies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,035
12,403
0.728
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :3
Environmental Sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,265
12,337
0.675
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :4
Antimicrobial Agents
Nanoformulation
Silver nanoparticles
Phosphate solubilization
Biofilm
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,335
8,960
0.726
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :5
Electrochemistry
Physical Chemistry
Nanotechnology
Renewable Energy
Environmental Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,250
8,836
0.785
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :6
Climate
Climate Change
Impact of Climate Change in water resources and environment
climate extremes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,821
7,171
0.813
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :7
Environmental Biotechnology
Microbial Electrochemical Systems
Aerobic Granular Sludge
Anammox
Resource Recovery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,905
6,780
0.761
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :8
Environmental Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,344
5,788
0.694
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :9
Water Treatment
Seawater Desalination
Wastewater Reuse
Reverse Osmosis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,941
5,720
0.640
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :10
Agricultural Sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,406
4,974
0.920
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :11
Air Pollution. Ecophysiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,001
4,293
0.613
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :12
Modeling & Programing-Simulation & Optimization
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,431
4,135
0.761
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :13
Water splitting
CO2 electroreduction
Clean energy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,581
4,099
0.734
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :14
Applied environmental microbiology
water quality
water reuse
antibiotic resistance
anaerobic processes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,943
4,082
0.687
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :15
Climate Change
Climate Modelling
Radar and Satellite Meteorology
Monsoon Meteorology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,712
3,826
0.670
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :16
Desalination
Membrane Distillation
HDH
Combustion
Heat transfer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,988
2,821
0.944
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :17
Environmental Sciences- Metalo-Phthalocyanine -nano-materiaux - essential oils
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,598
2,765
0.768
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :18
Membrane fabrication
Desalination
Nanofiber
Nanomaterials
Water treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,950
2,482
0.841
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :19
Water
industrial wastewater
Pollution
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,245
2,435
0.750
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :20
Groundwater
hydrogeochemistry
modelling
groundwater contamination
Quality
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,276
1,988
0.607
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :21
Environmental Microbiology and Biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,419
1,763
0.729
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :22
Environmental Engineering/wastewater treatment and the production of high-value-added products from waste and natural sources
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,415
1,733
0.718
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :23
AI Signal Processing Image Processing AIoT Artificial Intelligence
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,195
1,664
0.758
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :24
Environmental sciences and engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,992
1,361
0.683
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :25
Hypoxia
Deoxygenation
Acidification
Climate Change
Multi-stressor experiments
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,829
1,107
0.605
* Last 6 Years Citation Counts Rankings
Rankings
2,000
7
2
Ranking Based On Selection: 1
Mika Sillanpää
King Saud University
Riyadh, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
88,714
64,592
0.728
Environmental Engineering
Green Chemistry
Chemical Engineering
Water Treatment
Environmental
* Last 6 Years Citation Counts Rankings
Rankings
26,543
112
39
Ranking Based On Selection: 2
Ghaffour Noreddine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,035
12,403
0.728
Water desalination
Renewable energy
Desalination economics
Innovative desalination technologies
* Last 6 Years Citation Counts Rankings
Rankings
26,719
114
14
Ranking Based On Selection: 3
Ma Barakat
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,265
12,337
0.675
Environmental Sciences
* Last 6 Years Citation Counts Rankings
Rankings
43,029
184
23
Ranking Based On Selection: 4
Oves M
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,335
8,960
0.726
Antimicrobial Agents
Nanoformulation
Silver nanoparticles
Phosphate solubilization
Biofilm
* Last 6 Years Citation Counts Rankings
Rankings
43,864
189
25
Ranking Based On Selection: 5
Iqbal Ismail
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,250
8,836
0.785
Electrochemistry
Physical Chemistry
Nanotechnology
Renewable Energy
Environmental Science
* Last 6 Years Citation Counts Rankings
Rankings
58,955
259
39
Ranking Based On Selection: 6
Mansour Almazroui
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,821
7,171
0.813
Climate
Climate Change
Impact of Climate Change in water resources and environment
climate extremes
* Last 6 Years Citation Counts Rankings
Rankings
63,732
291
91
Ranking Based On Selection: 7
Pascal E Saikaly
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,905
6,780
0.761
Environmental Biotechnology
Microbial Electrochemical Systems
Aerobic Granular Sludge
Anammox
Resource Recovery
* Last 6 Years Citation Counts Rankings
Rankings
78,550
356
48
Ranking Based On Selection: 8
Rajeev Kumar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,344
5,788
0.694
Environmental Science
* Last 6 Years Citation Counts Rankings
Rankings
79,795
366
116
Ranking Based On Selection: 9
Muhammad Tariq Khan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,941
5,720
0.640
Water Treatment
Seawater Desalination
Wastewater Reuse
Reverse Osmosis
* Last 6 Years Citation Counts Rankings
Rankings
95,357
443
55
Ranking Based On Selection: 10
Muhammad Imtiaz Rashid
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,406
4,974
0.920
Agricultural Sciences
* Last 6 Years Citation Counts Rankings
Rankings
114,417
550
66
Ranking Based On Selection: 11
Ibrahim Hassan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,001
4,293
0.613
Air Pollution. Ecophysiology
* Last 6 Years Citation Counts Rankings
Rankings
119,709
577
120
Ranking Based On Selection: 12
Alazba
King Saud University
Riyadh, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,431
4,135
0.761
Modeling & Programing-Simulation & Optimization
* Last 6 Years Citation Counts Rankings
Rankings
120,891
587
158
Ranking Based On Selection: 13
Xiulin Yang
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,581
4,099
0.734
Water splitting
CO2 electroreduction
Clean energy
* Last 6 Years Citation Counts Rankings
Rankings
121,473
593
161
Ranking Based On Selection: 14
Peiying Hong
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,943
4,082
0.687
Applied environmental microbiology
water quality
water reuse
antibiotic resistance
anaerobic processes
* Last 6 Years Citation Counts Rankings
Rankings
131,204
646
78
Ranking Based On Selection: 15
M Nazrul Islam
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,712
3,826
0.670
Climate Change
Climate Modelling
Radar and Satellite Meteorology
Monsoon Meteorology
* Last 6 Years Citation Counts Rankings
Rankings
185,825
962
85
Ranking Based On Selection: 16
Dahiru Lawal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,988
2,821
0.944
Desalination
Membrane Distillation
HDH
Combustion
Heat transfer
* Last 6 Years Citation Counts Rankings
Rankings
189,832
975
117
Ranking Based On Selection: 17
Bassem Jamoussi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,598
2,765
0.768
Environmental Sciences- Metalo-Phthalocyanine -nano-materiaux - essential oils
* Last 6 Years Citation Counts Rankings
Rankings
213,001
1,091
248
Ranking Based On Selection: 18
M Obaid
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,950
2,482
0.841
Membrane fabrication
Desalination
Nanofiber
Nanomaterials
Water treatment
* Last 6 Years Citation Counts Rankings
Rankings
217,353
1,129
129
Ranking Based On Selection: 19
Talal Almeelbi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,245
2,435
0.750
Water
industrial wastewater
Pollution
* Last 6 Years Citation Counts Rankings
Rankings
266,834
1,410
149
Ranking Based On Selection: 20
Natarajan Rajmohan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,276
1,988
0.607
Groundwater
hydrogeochemistry
modelling
groundwater contamination
Quality
* Last 6 Years Citation Counts Rankings
Rankings
299,414
1,591
162
Ranking Based On Selection: 21
Arulazan Pugazhendi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,419
1,763
0.729
Environmental Microbiology and Biotechnology
* Last 6 Years Citation Counts Rankings
Rankings
304,156
1,622
54
Ranking Based On Selection: 22
Ben Rebah Faouzi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,415
1,733
0.718
Environmental Engineering/wastewater treatment and the production of high-value-added products from waste and natural sources
* Last 6 Years Citation Counts Rankings
Rankings
315,604
603
17
Ranking Based On Selection: 23
Mahasak Ketcham
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,195
1,664
0.758
AI Signal Processing Image Processing AIoT Artificial Intelligence
* Last 6 Years Citation Counts Rankings
Rankings
377,069
2,111
156
Ranking Based On Selection: 24
Bassam Tawabini
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,992
1,361
0.683
Environmental sciences and engineering
* Last 6 Years Citation Counts Rankings
Rankings
445,389
2,556
445
Ranking Based On Selection: 25
Alexandra Steckbauer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,829
1,107
0.605
Hypoxia
Deoxygenation
Acidification
Climate Change
Multi-stressor experiments