Citation Rankings
Highly Cited Researchers
Engineering & Technology / Environmental Science & Engineering Highly Cited Researchers 13 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
disinfection
water treatment
environmental microbiology
risk assessment
environmental engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,921
5,600
0.281
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Autism
Social Work
Public Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,219
10,339
0.538
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Peace Engineering
Environmental Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,140
2,173
0.165
* Total Citation Counts Rankings
Ranking Based On Selection: 4
environmental microbiology
environmental engineering
bioremediation
PFAS
plasma
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,316
895
0.680
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Building simulation and control
indoor air quality
energy efficiency
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
846
512
0.605
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Health geography
social determinants of health
place-based inequities
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
832
540
0.649
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Environmental Health
Environmental Epidemiology
Air Pollution
Health Disparities
Climate Change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
749
724
0.967
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Fate and Transport of Chemical and Biological Pollutants in Natural and Built Environment
Risk Analysis of Environmental System
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
585
389
0.665
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Chemical and Environmental Engineering
Membrane Separation Process
Water and Wastewater Treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
410
399
0.973
* Total Citation Counts Rankings
Ranking Based On Selection: 10
PFAS
wastewater
biosolids
environmental engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
338
334
0.988
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Environmental Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54
54
1.000
* Total Citation Counts Rankings
Ranking Based On Selection: 12
environmental microbiology
environmental engineering
Plasma
food safety
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11
11
1.000
* Total Citation Counts Rankings
Ranking Based On Selection: 13
environmental sustainability
building energy optimization
circular economy
climate resilience
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8
8
1.000
* Total Citation Counts Rankings
Rankings
41,708
18,355
22
Ranking Based On Selection: 1
Charles N Haas
Drexel University
Philadelphia, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,921
5,600
0.281
disinfection
water treatment
environmental microbiology
risk assessment
environmental engineering
* Total Citation Counts Rankings
Rankings
43,754
19,148
23
Ranking Based On Selection: 2
Paul T Shattuck
Drexel University
Philadelphia, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,219
10,339
0.538
Autism
Social Work
Public Health
* Total Citation Counts Rankings
Rankings
72,530
30,063
40
Ranking Based On Selection: 3
Joseph B Hughes
Drexel University
Philadelphia, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,140
2,173
0.165
Peace Engineering
Environmental Engineering
* Total Citation Counts Rankings
Rankings
588,699
178,731
390
Ranking Based On Selection: 4
Christopher Michael Sales
Drexel University
Philadelphia, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,316
895
0.680
environmental microbiology
environmental engineering
bioremediation
PFAS
plasma
* Total Citation Counts Rankings
Rankings
746,526
217,561
459
Ranking Based On Selection: 5
Adams Rackes
Drexel University
Philadelphia, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
846
512
0.605
Building simulation and control
indoor air quality
energy efficiency
* Total Citation Counts Rankings
Rankings
752,314
218,932
466
Ranking Based On Selection: 6
Jamie L Humphrey
Drexel University
Philadelphia, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
832
540
0.649
Health geography
social determinants of health
place-based inequities
* Total Citation Counts Rankings
Rankings
788,794
227,011
474
Ranking Based On Selection: 7
Josiah L Kephart
Drexel University
Philadelphia, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
749
724
0.967
Environmental Health
Environmental Epidemiology
Air Pollution
Health Disparities
Climate Change
* Total Citation Counts Rankings
Rankings
871,640
244,859
505
Ranking Based On Selection: 8
Rajveer Singh
Drexel University
Philadelphia, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
585
389
0.665
Fate and Transport of Chemical and Biological Pollutants in Natural and Built Environment
Risk Analysis of Environmental System
* Total Citation Counts Rankings
Rankings
1,010,275
269,109
556
Ranking Based On Selection: 9
Mohammad Mozafari
Drexel University
Philadelphia, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
410
399
0.973
Chemical and Environmental Engineering
Membrane Separation Process
Water and Wastewater Treatment
* Total Citation Counts Rankings
Rankings
1,087,988
281,049
585
Ranking Based On Selection: 10
Asa Lewis
Drexel University
Philadelphia, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
338
334
0.988
PFAS
wastewater
biosolids
environmental engineering
* Total Citation Counts Rankings
Rankings
1,817,930
380,558
842
Ranking Based On Selection: 11
Chongshi Wang
Drexel University
Philadelphia, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54
54
1.000
Environmental Engineering
* Total Citation Counts Rankings
Rankings
2,185,440
426,187
978
Ranking Based On Selection: 12
Jinjie He
Drexel University
Philadelphia, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11
11
1.000
environmental microbiology
environmental engineering
Plasma
food safety
* Total Citation Counts Rankings
Rankings
2,231,128
431,043
987
Ranking Based On Selection: 13
Cagla Keles
Drexel University
Philadelphia, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8
8
1.000
environmental sustainability
building energy optimization
circular economy
climate resilience