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
Advanced biological waste treatment processes
membrane technologies
alternative water resources
resource recovery
environmen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
60,350
42,010
0.696
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Green Technology
Resource & Energy Recovery
Water-Waste-Energy Nexus
Membrane Technology
Solid Waste Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,311
32,250
0.696
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Water-Food-Energy Nexus
Membrane separation
Anaerobic digestion
Resource Recovery from Wastewater
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,430
25,680
0.591
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Techno-Economic Analysis
Life-Cycle Cost
Cost-Benefit Analysis
Circular Economy
Energy & Fuels
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,221
26,951
0.638
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Environmental Technology
Greenhouse Gas Emissions
Wastewater Treatment
Microplastics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,454
25,880
0.797
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Plant ecophysiology. terrestrial ecohydrology
plant physiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,593
10,466
0.366
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Water treatment
Wastewater treatment
membrane technology
filtration
desalination
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,270
12,422
0.456
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Federated Learning
Foundation Models
On-device Intelligence
Digital Health
Climate Change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,783
24,357
0.945
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Wastewater Treatment
Water Treatment
Wastewater Epidemiology
PFAS
Sludge Treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,207
13,153
0.812
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Environmental Engineering
Wastewater Treatment
Sludge Management
Micro/nanoplastics
Waste-to-Energy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,240
11,683
0.954
* Total Citation Counts Rankings
Ranking Based On Selection: 11
water energy phosphorus
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,158
4,930
0.405
* Total Citation Counts Rankings
Ranking Based On Selection: 12
wastewater treatment and reused technologies
desalination
sludge treatmen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,015
3,849
0.640
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Phytoremediation Air pollution Sustainable cities Green infrastructure
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,939
3,139
0.636
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Air quality
Phytoremediation
Green Infrastructure
Green Roof
Nature Based Solutions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,159
2,597
0.822
* Total Citation Counts Rankings
Ranking Based On Selection: 15
environmental engineering and science - vehicle emissions - combustion aerosol - air quality - fire
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,117
2,191
0.703
* Total Citation Counts Rankings
Ranking Based On Selection: 16
urban water
water efficiency
integrated water management
Climate change adaptation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,957
1,188
0.402
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Environmental Engineering
Wastewater Treatment
Resource Recovery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,194
1,962
0.894
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Wastewater purification
Nutrient removal and recovery
Bioremediation
Hydrothermal carbonization
Circular economy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,144
1,508
0.703
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Occupational Hygiene HSE
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,787
921
0.515
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Climate change adaptation
Pacific
disaster risk reduction
development
resilience
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,337
551
0.412
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Online life
disorder
Climate Change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,171
627
0.535
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Environmental Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,081
487
0.451
* Total Citation Counts Rankings
Ranking Based On Selection: 23
water efficiency
demand management
integrated resource planning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
976
323
0.331
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Dimethylsulfide
climate change
coral reefs
phytoplankton
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
767
476
0.621
* Total Citation Counts Rankings
Ranking Based On Selection: 25
resilience
design
climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
735
403
0.548
Huu Hao Ngo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
60,350
42,010
0.696
Advanced biological waste treatment processes
membrane technologies
alternative water resources
resource recovery
environmen
Wenshan Guo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,311
32,250
0.696
Green Technology
Resource & Energy Recovery
Water-Waste-Energy Nexus
Membrane Technology
Solid Waste Management
Long Nghiem
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,430
25,680
0.591
Water-Food-Energy Nexus
Membrane separation
Anaerobic digestion
Resource Recovery from Wastewater
TM Indra Mahlia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,221
26,951
0.638
Techno-Economic Analysis
Life-Cycle Cost
Cost-Benefit Analysis
Circular Economy
Energy & Fuels
Bing Jie Ni
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,454
25,880
0.797
Environmental Technology
Greenhouse Gas Emissions
Wastewater Treatment
Microplastics
Derek Eamus
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,593
10,466
0.366
Plant ecophysiology. terrestrial ecohydrology
plant physiology
Saravanamuthu Vigneswaran
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,270
12,422
0.456
Water treatment
Wastewater treatment
membrane technology
filtration
desalination
Guodong Long
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,783
24,357
0.945
Federated Learning
Foundation Models
On-device Intelligence
Digital Health
Climate Change
Qilin Wang
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,207
13,153
0.812
Wastewater Treatment
Water Treatment
Wastewater Epidemiology
PFAS
Sludge Treatment
Wei Wei
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,240
11,683
0.954
Environmental Engineering
Wastewater Treatment
Sludge Management
Micro/nanoplastics
Waste-to-Energy
Stuart White
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,158
4,930
0.405
water energy phosphorus
Tien Vinh Nguyen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,015
3,849
0.640
wastewater treatment and reused technologies
desalination
sludge treatmen
Fraser Torpy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,939
3,139
0.636
Phytoremediation Air pollution Sustainable cities Green infrastructure
Peter J Irga
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,159
2,597
0.822
Air quality
Phytoremediation
Green Infrastructure
Green Roof
Nature Based Solutions
Nicholas C. Surawski
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,117
2,191
0.703
environmental engineering and science - vehicle emissions - combustion aerosol - air quality - fire
Pierre Mukheibir
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,957
1,188
0.402
urban water
water efficiency
integrated water management
Climate change adaptation
Yuanyao Ye
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,194
1,962
0.894
Environmental Engineering
Wastewater Treatment
Resource Recovery
Thi An Hang Nguyen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,144
1,508
0.703
Wastewater purification
Nutrient removal and recovery
Bioremediation
Hydrothermal carbonization
Circular economy
Atefeh Abdolali
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,787
921
0.515
Occupational Hygiene HSE
Anna Gero
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,337
551
0.412
Climate change adaptation
Pacific
disaster risk reduction
development
resilience
Jonathan Marshall
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,171
627
0.535
Online life
disorder
Climate Change
Md Anwar Hossain
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,081
487
0.451
Environmental Engineering
Turner Aj
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
976
323
0.331
water efficiency
demand management
integrated resource planning
Elisabeth Deschaseaux
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
767
476
0.621
Dimethylsulfide
climate change
coral reefs
phytoplankton
Penelope Allan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
735
403
0.548
resilience
design
climate change