Top 100 scientists can be ranked globally or specific to the following regions including Africa, Asia, Europe, North America, Latin America, Oceania, Arab League, ASEAN, EECA, and BRICS based on total H-index scores without any breakdown by subject areas. Top 100 rankings in the world, in a continent, or a region include standardized subjects areas of Agriculture & Forestry, Arts, Design and Architecture, Business & Management, Economics & Econometrics, Education, Engineering & Technology, History, Philosophy, Theology, Law/Law and Legal Studies, Medical and Health Sciences, Natural Sciences, Social Sciences, Art and Humanities Rankings and Social Sciences and Humanities Rankings BETA VERSION. Subject field ranking in world, region, country and university is beta version since subject field "others" (870,053 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded, so the ranking will change as the others fields are edited. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.
Water Treatment
Waste to Value-added Products
Metrics
H-Index
i10 Index
Citation
133
523
96,599
Membrane technology for water and wastewater treatment
Metrics
H-Index
i10 Index
Citation
77
178
24,290
Analytical and environmental chemistry
Environmental Remediation
Validation method in analytical chemistry
Remediation
Adsor
Metrics
H-Index
i10 Index
Citation
55
163
14,827
Climate change ecology
Climate change vulnerability
Vegetation Science
Soil biodiversity
ITEX
Metrics
H-Index
i10 Index
Citation
52
126
13,537
Water-Energy-Food nexus
Metrics
H-Index
i10 Index
Citation
51
77
9,422
Desalination
water treatment
environmental engineering
Metrics
H-Index
i10 Index
Citation
49
88
8,422
Sustainability
Built Environment
Life-Cycle Assessment
Climate Change
Resilient Infrastructure
Metrics
H-Index
i10 Index
Citation
46
123
6,800
CO2 capture and conversion
Water/wastewater treatment
Climate change
Metrics
H-Index
i10 Index
Citation
43
91
6,465
Electronic and transport properties of nanostructures systems
Metrics
H-Index
i10 Index
Citation
41
93
5,086
Nanobiotechnology for Energy and Environment
MXenes
Green Materials
Bioprocesses
Resource
Metrics
H-Index
i10 Index
Citation
33
53
6,613
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Membrane Engineering
Electrospinning
Water Desalination
Membrane Distillation and Water Quality
Metrics
H-Index
i10 Index
Citation
33
45
4,006
Computational Materials Science
Physics
Chemistry
Metrics
H-Index
i10 Index
Citation
32
72
4,431
Innovative Desalination Process Development (Thermal
Membrane
Hybrid)
Metrics
H-Index
i10 Index
Citation
32
52
3,389
Environment and water sciences
Metrics
H-Index
i10 Index
Citation
31
48
2,296
Modelling of Transport and Reacting Phenomena (Air Quality
Risk Assessment
Solar Thermochemical)
Metrics
H-Index
i10 Index
Citation
29
54
3,273
MXene
Graphene
Advanced materials
Membrane technology
Environmental Science
Metrics
H-Index
i10 Index
Citation
28
43
3,476
Materials Science
Metrics
H-Index
i10 Index
Citation
28
49
3,109
Fibre Optic Sensing
Underground Construction
Centrifuge Modelling
Metrics
H-Index
i10 Index
Citation
26
43
2,104
Environment and development
Water governance
WEF Nexus
Environmental policy
Middle East
Metrics
H-Index
i10 Index
Citation
25
44
2,037
Membrane Separations for Water and Wastewater Treatment and DSP for Pharma (protein purification)
Mathematical Modelling
Membr
Metrics
H-Index
i10 Index
Citation
25
39
2,395
Earth and Environmental Studies - Remote Sensing applications
Metrics
H-Index
i10 Index
Citation
24
46
1,786
Marine cytogenetics
Aquaculture genetics
Marine Genotoxicology
Biodiversity
Sustainability
Metrics
H-Index
i10 Index
Citation
24
46
1,591
MXenes
Graphene
Heterostructures
Thin Film devices for energy conversion and energy storage
Metrics
H-Index
i10 Index
Citation
23
29
2,931
Environmental Health
Ambient and indoor air quality
Bioaerosol
indoor pollution
Metrics
H-Index
i10 Index
Citation
21
34
1,928
Waste Management
Nano-Materials
Polymers
Metrics
H-Index
i10 Index
Citation
20
29
1,735
Marine Biology
Marine Ecology
Mangroves and Seagrass Ecology
Marine Pollution
Metrics
H-Index
i10 Index
Citation
19
32
1,092
air polllution
catalysis
zeolites
Metrics
H-Index
i10 Index
Citation
18
29
1,187
water treatment
membrane
reverse osmosis
ultrafiltration
nanofiltration
Metrics
H-Index
i10 Index
Citation
17
20
1,643
Power & Energy System
Distributed & Renewable Energy Integration
SmartGrid & Microgrid
Advance Management of Distribution Net
Metrics
H-Index
i10 Index
Citation
17
26
1,019
Renewable energy
Photovoltaics
Nanotechnology
Semiconducting Nanostructures
Nanophotonics
Metrics
H-Index
i10 Index
Citation
16
19
1,165
Environmental & Water Resources Engineering
Metrics
H-Index
i10 Index
Citation
14
19
781
Radiation Physics
Natural radioactivity
NORM
Gamma-ray spectrometry.
Metrics
H-Index
i10 Index
Citation
14
15
1,040
Water Treatment
Wastewater Treatment
Water Reuse
Desalination
Metrics
H-Index
i10 Index
Citation
14
15
1,271
Sustainable Energy
Biofuels
Process Optimization
Modeling & Simulations
Metrics
H-Index
i10 Index
Citation
13
17
1,279
Metrics
H-Index
i10 Index
Citation
12
12
831
Chemical Engineering
Pedagogy
Environment
Chemistry
Metrics
H-Index
i10 Index
Citation
10
10
1,202
* Rankings
Ranking Based
On Selection: 37
Sustainable Energy
Bioenergy
Waste to Value
Environmental Science
Metrics
H-Index
i10 Index
Citation
9
8
272
* Rankings
Ranking Based
On Selection: 38
Metrics
H-Index
i10 Index
Citation
7
7
175
* Rankings
Ranking Based
On Selection: 39
Environmental chemistry
marine pollution
Heavy metals accumilation
Metrics
H-Index
i10 Index
Citation
7
5
121
* Rankings
Ranking Based
On Selection: 40
Agric. Economics
Biotechnology
Environment Stress & Biodiversity
Molecular Biology
Food Security
Metrics
H-Index
i10 Index
Citation
6
6
292
* Rankings
Ranking Based
On Selection: 41
environmental sciences
biodiversity. oil spill
Metrics
H-Index
i10 Index
Citation
6
4
165
* Rankings
Ranking Based
On Selection: 42
Ecotoxicology
Birds ecology
Avian Biochemistry
Metrics
H-Index
i10 Index
Citation
6
5
158
* Rankings
Ranking Based
On Selection: 43
Environmental science
Sustainability
Algal research
Metrics
H-Index
i10 Index
Citation
5
3
125
* Rankings
Ranking Based
On Selection: 44
Chemical Engineering
Environmental Engineering
Drilling Fluids
Horizontal Drilling
Hole Cleaning
Metrics
H-Index
i10 Index
Citation
4
4
216
* Rankings
Ranking Based
On Selection: 45
Metrics
H-Index
i10 Index
Citation
4
3
136
* Rankings
Ranking Based
On Selection: 46
Environmental Engineering
Wastewater Treatment
Membrane Distillation
Desalination
Metrics
H-Index
i10 Index
Citation
4
2
161
* Rankings
Ranking Based
On Selection: 47
Geoenvironmental Engineering
Computational Geosciences
Applied Machine Learning
CFD-DEM
Metrics
H-Index
i10 Index
Citation
3
3
148
* Rankings
Ranking Based
On Selection: 48
Water Resource Engineering
Waste Management
Environmental Science
Environmental Toxicology
Metrics
H-Index
i10 Index
Citation
3
2
273
* Rankings
Ranking Based
On Selection: 49
Environmental Engineering
Chemical Engineering
Adsorption
Wastewater Treatment
Metrics
H-Index
i10 Index
Citation
3
2
106
* Rankings
Ranking Based
On Selection: 50
environmental science
analytical chemistry
Metrics
H-Index
i10 Index
Citation
3
2
89
* Rankings
Ranking Based
On Selection: 51
Environmental Sciences
Marine scince
Metrics
H-Index
i10 Index
Citation
2
2
37
* Rankings
Ranking Based
On Selection: 52
Environmental Science
Metrics
H-Index
i10 Index
Citation
2
1
30
* Rankings
Ranking Based
On Selection: 53
Microbiology
Environmental Science
Metrics
H-Index
i10 Index
Citation
2
1
16
* Rankings
Ranking Based
On Selection: 54
Climate Change - Food and water security
Metrics
H-Index
i10 Index
Citation
1
0
2
Gordon Mckay
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
133
523
96,599
Water Treatment
Waste to Value-added Products
Membrane technology for water and wastewater treatment
Mohammad A Al Ghouti
Qatar University
Doha, Qatar
Metrics
H-Index
i10 Index
Citation Counts
55
163
14,827
Analytical and environmental chemistry
Environmental Remediation
Validation method in analytical chemistry
Remediation
Adsor
Climate change ecology
Climate change vulnerability
Vegetation Science
Soil biodiversity
ITEX
Zhaoyang Liu
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
51
77
9,422
Water-Energy-Food nexus
Khaled Elsaid
Texas A&M University at Qatar
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
49
88
8,422
Desalination
water treatment
environmental engineering
Sami G Al Ghamdi
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
46
123
6,800
Sustainability
Built Environment
Life-Cycle Assessment
Climate Change
Resilient Infrastructure
Abdelbaki Benamor
Qatar University
Doha, Qatar
Metrics
H-Index
i10 Index
Citation Counts
43
91
6,465
CO2 capture and conversion
Water/wastewater treatment
Climate change
Golibjon Berdiyorov
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
41
93
5,086
Electronic and transport properties of nanostructures systems
Kashif Rasool
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
33
53
6,613
Nanobiotechnology for Energy and Environment
MXenes
Green Materials
Bioprocesses
Resource
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
Lijo Francis
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
33
45
4,006
Membrane Engineering
Electrospinning
Water Desalination
Membrane Distillation and Water Quality
Fedwa El Mellouhi
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
32
72
4,431
Computational Materials Science
Physics
Chemistry
Abdelnasser Mabrouk
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
32
52
3,389
Innovative Desalination Process Development (Thermal
Membrane
Hybrid)
Basem Shomar
Qatar Foundation
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
31
48
2,296
Environment and water sciences
Konstantinos E Kakosimos
Texas A&M University at Qatar
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
29
54
3,273
Modelling of Transport and Reacting Phenomena (Air Quality
Risk Assessment
Solar Thermochemical)
Ravi P Pandey
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
28
43
3,476
MXene
Graphene
Advanced materials
Membrane technology
Environmental Science
Said Mansour
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
28
49
3,109
Mohammed ZEB Elshafie
Qatar University
Doha, Qatar
Metrics
H-Index
i10 Index
Citation Counts
26
43
2,104
Fibre Optic Sensing
Underground Construction
Centrifuge Modelling
Mohammad Al Saidi
Qatar University
Doha, Qatar
Metrics
H-Index
i10 Index
Citation Counts
25
44
2,037
Environment and development
Water governance
WEF Nexus
Environmental policy
Middle East
Jenny Lawler
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
25
39
2,395
Membrane Separations for Water and Wastewater Treatment and DSP for Pharma (protein purification)
Mathematical Modelling
Membr
Sankaran Rajendran
Qatar University
Doha, Qatar
Metrics
H-Index
i10 Index
Citation Counts
24
46
1,786
Earth and Environmental Studies - Remote Sensing applications
Marine cytogenetics
Aquaculture genetics
Marine Genotoxicology
Biodiversity
Sustainability
Adnan Ali
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
23
29
2,931
MXenes
Graphene
Heterostructures
Thin Film devices for energy conversion and energy storage
Azhar Siddique
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
21
34
1,928
Environmental Health
Ambient and indoor air quality
Bioaerosol
indoor pollution
Junaid Saleem
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
20
29
1,735
Waste Management
Nano-Materials
Polymers
Ibrahim Al Maslamani
Qatar University
Doha, Qatar
Metrics
H-Index
i10 Index
Citation Counts
19
32
1,092
Marine Biology
Marine Ecology
Mangroves and Seagrass Ecology
Marine Pollution
Mohammed Ali S Saad
Qatar University
Doha, Qatar
Metrics
H-Index
i10 Index
Citation Counts
18
29
1,187
air polllution
catalysis
zeolites
Yehia Manawi
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
17
20
1,643
water treatment
membrane
reverse osmosis
ultrafiltration
nanofiltration
Mohd Zamri Che Wanik
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
17
26
1,019
Power & Energy System
Distributed & Renewable Energy Integration
SmartGrid & Microgrid
Advance Management of Distribution Net
Afsal Manekkathodi
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
16
19
1,165
Renewable energy
Photovoltaics
Nanotechnology
Semiconducting Nanostructures
Nanophotonics
Environmental & Water Resources Engineering
Huda Al Sulaiti
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
14
15
1,040
Radiation Physics
Natural radioactivity
NORM
Gamma-ray spectrometry.
Oluwaseun Ogunbiyi
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
14
15
1,271
Water Treatment
Wastewater Treatment
Water Reuse
Desalination
Mohammad Alherbawi
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
13
17
1,279
Sustainable Energy
Biofuels
Process Optimization
Modeling & Simulations
Ahmed Elkhatat|ِAhmed M. R. Elkhatat, Ahmed M. Elkhatat
Qatar University
Doha, Qatar
Metrics
H-Index
i10 Index
Citation Counts
10
10
1,202
Chemical Engineering
Pedagogy
Environment
Chemistry
Sabah Mariyam
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10 Index
Citation Counts
9
8
272
Sustainable Energy
Bioenergy
Waste to Value
Environmental Science
Ahmed Abou Elezz|Ahmed A. Elezz, Ahmed Helmi
Qatar University
Doha, Qatar
Metrics
H-Index
i10 Index
Citation Counts
7
5
121
Environmental chemistry
marine pollution
Heavy metals accumilation
Agric. Economics
Biotechnology
Environment Stress & Biodiversity
Molecular Biology
Food Security
environmental sciences
biodiversity. oil spill
Ecotoxicology
Birds ecology
Avian Biochemistry
Environmental science
Sustainability
Algal research
Chemical Engineering
Environmental Engineering
Drilling Fluids
Horizontal Drilling
Hole Cleaning
Afnan Abdirashid Mussa
Qatar University
Doha, Qatar
Metrics
H-Index
i10 Index
Citation Counts
4
3
136
Environmental Engineering
Wastewater Treatment
Membrane Distillation
Desalination
Geoenvironmental Engineering
Computational Geosciences
Applied Machine Learning
CFD-DEM
Water Resource Engineering
Waste Management
Environmental Science
Environmental Toxicology
Environmental Engineering
Chemical Engineering
Adsorption
Wastewater Treatment
environmental science
analytical chemistry
Environmental Sciences
Marine scince
Environmental Science
Sameera Shanawaz Shaikh
Qatar University
Doha, Qatar
Metrics
H-Index
i10 Index
Citation Counts
2
1
16
Microbiology
Environmental Science
Abdulaziz Ali Al-Mannai
Qatar University
Doha, Qatar
Metrics
H-Index
i10 Index
Citation Counts
1
0
2
Climate Change - Food and water security