Citation Rankings
Highly Cited Researchers
Arab League Engineering & Technology / Environmental Science & Engineering Highly Cited Researchers 1.027 Scientists Citation Rankings - 2025
The Citation Rankings (Highly Cited Researchers) list 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.
* Total Citation Counts Rankings
Ranking Based On Selection: 1
Water Treatment
Waste to Value-added Products
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
96,599
35,979
0.372
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Environmental Engineering
Green Chemistry
Chemical Engineering
Water Treatment
Environmental
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
92,036
61,309
0.666
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Membrane technology for water and wastewater treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,290
7,315
0.301
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Environmental Sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,701
11,147
0.596
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Water desalination
Renewable energy
Desalination economics
Innovative desalination technologies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,566
11,430
0.651
* Total Citation Counts Rankings
Ranking Based On Selection: 6
chronic respirotery disease
Air pollution
Health programing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,304
5,222
0.302
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Analytical and environmental chemistry
Environmental Remediation
Validation method in analytical chemistry
Remediation
Adsor
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,827
11,142
0.751
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Climate change ecology
Climate change vulnerability
Vegetation Science
Soil biodiversity
ITEX
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,537
8,453
0.624
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Antimicrobial Agents
Nanoformulation
Silver nanoparticles
Phosphate solubilization
Biofilm
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,669
8,208
0.648
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Waste management
Water resources management
Air pollution control
Climate change and sustainable development
Environmental i
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,465
4,558
0.366
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Electrochemistry
Physical Chemistry
Nanotechnology
Renewable Energy
Environmental Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,540
8,165
0.708
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Environmental Science
Reproductive Toxicology
Endocrine Disruption
Hepatotoxicity
Drug Toxicity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,729
3,328
0.310
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Water-Energy-Food nexus
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,422
3,898
0.414
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Climate
Climate Change
Impact of Climate Change in water resources and environment
climate extremes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,288
7,088
0.763
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Water Treatment
Seawater Desalination
Wastewater Reuse
Reverse Osmosis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,191
5,427
0.590
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Environmental Biotechnology
Microbial Electrochemical Systems
Aerobic Granular Sludge
Anammox
Resource Recovery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,167
6,277
0.685
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Environmental Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,587
5,341
0.622
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Desalination
water treatment
environmental engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,422
8,218
0.976
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Energy
Sustainability
Integrated Assessment
Climate Change Mitigation
Water-Energy-Land Nexus
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,008
5,778
0.722
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Génie de l'Environnement
Génie des Procédés
Chimie de l'Environnement
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,717
3,104
0.402
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Membranes
Wastewater treatment
Environmental science
Food Packaging
Waste to Energy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,686
7,519
0.978
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Earth and Planetary Sciences
Climate Change
Renewable Energy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,613
3,764
0.494
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Air Pollution. Ecophysiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,227
4,123
0.570
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Environmental Engineering
Water Treatment
Desalination
Circular Economy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,857
4,634
0.676
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Sustainability
Built Environment
Life-Cycle Assessment
Climate Change
Resilient Infrastructure
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,800
6,538
0.961
* Total Citation Counts Rankings
Rankings
3,454
1
1
Ranking Based On Selection: 1
Gordon Mckay
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
96,599
35,979
0.372
Water Treatment
Waste to Value-added Products
* Total Citation Counts Rankings
Rankings
3,765
9
2
Ranking Based On Selection: 2
Mika Sillanpää
King Saud University
Riyadh, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
92,036
61,309
0.666
Environmental Engineering
Green Chemistry
Chemical Engineering
Water Treatment
Environmental
* Total Citation Counts Rankings
Rankings
31,549
13
4
Ranking Based On Selection: 3
Simon Judd
Qatar University
Doha, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,290
7,315
0.301
Membrane technology for water and wastewater treatment
* Total Citation Counts Rankings
Rankings
45,446
120
13
Ranking Based On Selection: 4
Ma Barakat
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,701
11,147
0.596
Environmental Sciences
* Total Citation Counts Rankings
Rankings
49,550
139
58
Ranking Based On Selection: 5
Ghaffour Noreddine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,566
11,430
0.651
Water desalination
Renewable energy
Desalination economics
Innovative desalination technologies
* Total Citation Counts Rankings
Rankings
50,544
1
1
Ranking Based On Selection: 6
Yousser Mohammad
Tishreen University
Latakia, Syria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,304
5,222
0.302
chronic respirotery disease
Air pollution
Health programing
* Total Citation Counts Rankings
Rankings
62,048
43
18
Ranking Based On Selection: 7
Mohammad A Al Ghouti
Qatar University
Doha, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,827
11,142
0.751
Analytical and environmental chemistry
Environmental Remediation
Validation method in analytical chemistry
Remediation
Adsor
* Total Citation Counts Rankings
Rankings
69,851
48
19
Ranking Based On Selection: 8
Juha M Alatalo
Qatar University
Doha, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,537
8,453
0.624
Climate change ecology
Climate change vulnerability
Vegetation Science
Soil biodiversity
ITEX
* Total Citation Counts Rankings
Rankings
75,897
210
18
Ranking Based On Selection: 9
Oves M
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,669
8,208
0.648
Antimicrobial Agents
Nanoformulation
Silver nanoparticles
Phosphate solubilization
Biofilm
* Total Citation Counts Rankings
Rankings
77,375
27
19
Ranking Based On Selection: 10
Mutasem El Fadel
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,465
4,558
0.366
Waste management
Water resources management
Air pollution control
Climate change and sustainable development
Environmental i
* Total Citation Counts Rankings
Rankings
84,951
238
27
Ranking Based On Selection: 11
Iqbal Ismail
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,540
8,165
0.708
Electrochemistry
Physical Chemistry
Nanotechnology
Renewable Energy
Environmental Science
* Total Citation Counts Rankings
Rankings
92,753
124
10
Ranking Based On Selection: 12
Mokhtar Ibrahim Yousef
Alexandria University
Alexandria, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,729
3,328
0.310
Environmental Science
Reproductive Toxicology
Endocrine Disruption
Hepatotoxicity
Drug Toxicity
* Total Citation Counts Rankings
Rankings
107,647
83
16
Ranking Based On Selection: 13
Zhaoyang Liu
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,422
3,898
0.414
Water-Energy-Food nexus
* Total Citation Counts Rankings
Rankings
109,343
314
40
Ranking Based On Selection: 14
Mansour Almazroui
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,288
7,088
0.763
Climate
Climate Change
Impact of Climate Change in water resources and environment
climate extremes
* Total Citation Counts Rankings
Rankings
110,684
315
109
Ranking Based On Selection: 15
Muhammad Tariq Khan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,191
5,427
0.590
Water Treatment
Seawater Desalination
Wastewater Reuse
Reverse Osmosis
* Total Citation Counts Rankings
Rankings
111,014
316
110
Ranking Based On Selection: 16
Pascal E Saikaly
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,167
6,277
0.685
Environmental Biotechnology
Microbial Electrochemical Systems
Aerobic Granular Sludge
Anammox
Resource Recovery
* Total Citation Counts Rankings
Rankings
119,510
343
44
Ranking Based On Selection: 17
Rajeev Kumar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,587
5,341
0.622
Environmental Science
* Total Citation Counts Rankings
Rankings
122,159
100
2
Ranking Based On Selection: 18
Khaled Elsaid
Texas A&M University at Qatar
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,422
8,218
0.976
Desalination
water treatment
environmental engineering
* Total Citation Counts Rankings
Rankings
129,072
384
1
Ranking Based On Selection: 19
Mohamad Hejazi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,008
5,778
0.722
Energy
Sustainability
Integrated Assessment
Climate Change Mitigation
Water-Energy-Land Nexus
* Total Citation Counts Rankings
Rankings
134,451
24
1
Ranking Based On Selection: 20
Hakim Lounici
Université de Bouira
Bouïra, Algeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,717
3,104
0.402
Génie de l'Environnement
Génie des Procédés
Chimie de l'Environnement
* Total Citation Counts Rankings
Rankings
135,069
156
44
Ranking Based On Selection: 21
Rambabu K
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,686
7,519
0.978
Membranes
Wastewater treatment
Environmental science
Food Packaging
Waste to Energy
* Total Citation Counts Rankings
Rankings
136,502
34
21
Ranking Based On Selection: 22
Yassine Charabi
Sultan Qaboos University
Muscat, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,613
3,764
0.494
Earth and Planetary Sciences
Climate Change
Renewable Energy
* Total Citation Counts Rankings
Rankings
144,256
448
61
Ranking Based On Selection: 23
Ibrahim Hassan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,227
4,123
0.570
Air Pollution. Ecophysiology
* Total Citation Counts Rankings
Rankings
152,431
43
8
Ranking Based On Selection: 24
Mohamed Chaker Ncibi
Mohammed VI Polytechnic University
Ben Guerir, Morocco
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,857
4,634
0.676
Environmental Engineering
Water Treatment
Desalination
Circular Economy
* Total Citation Counts Rankings
Rankings
153,773
131
24
Ranking Based On Selection: 25
Sami G Al Ghamdi
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,800
6,538
0.961
Sustainability
Built Environment
Life-Cycle Assessment
Climate Change
Resilient Infrastructure