Productivity Rankings is a unique service offered only by “AD Scientific Index”. This is a ranking system derived from the i10 index in order to show the productivity of the scientist in publishing scientific articles of value. Productivity Rankings is an instrument that lists productive scientists in a given area, discipline, university, and country and can guide the development of meaningful incentives and academic policies. The world rankings, regional rankings, and university rankings of scientists in this table are developed based on the total i10 index. Additionally, click to view the special rankings based on Productivity Rankings: Scientists Last 6 years' i10 Index", Universities Total i10 Index Rankings 2025, Universities Last 6 Years i10 Index Rankings 2025 "Art and Humanities i10 Productivity Rankings" and "Social Sciences and Humanities i10 Productivity Rankings".
* Total i10 IndexRankings
Ranking Based On Selection :1
enviornmental science
enviornmental biology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
319
179
0.561
* Total i10 IndexRankings
Ranking Based On Selection :2
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
311
226
0.727
* Total i10 IndexRankings
Ranking Based On Selection :3
Wastewater Technology
Algal Biotechnology
Biofuels
Bioremediation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
208
176
0.846
* Total i10 IndexRankings
Ranking Based On Selection :4
Environmental Engineerning
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
196
100
0.510
* Total i10 IndexRankings
Ranking Based On Selection :5
sustainability engineering
biogas
LCA
Future Technologies
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
175
140
0.800
* Total i10 IndexRankings
Ranking Based On Selection :6
Wastewater treatment technologies
Bioreactors
Membrane technology
Water reuse
Microbial fuel
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
163
140
0.859
* Total i10 IndexRankings
Ranking Based On Selection :7
RS/GIS_Water Resources
Hydrology and Groundwater
Environmental Engineering
Sustainable and green environment
Hydrodynamic mo
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
160
111
0.694
* Total i10 IndexRankings
Ranking Based On Selection :8
Climate Change
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
144
123
0.854
* Total i10 IndexRankings
Ranking Based On Selection :9
climate change mitigation
poverty
global stocktake
policy analysis
sustainable development
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
130
75
0.577
* Total i10 IndexRankings
Ranking Based On Selection :10
High Voltage Engineering
Lightning
EMI/EMC
Environmental Science
Extreme Natural Events
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
129
89
0.690
* Total i10 IndexRankings
Ranking Based On Selection :11
Water Microbiology
nanotechnology
biotechnology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
122
83
0.680
* Total i10 IndexRankings
Ranking Based On Selection :12
Génie de l'Environnement
Génie des Procédés
Chimie de l'Environnement
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
108
87
0.806
* Total i10 IndexRankings
Ranking Based On Selection :13
SDGs
Disaster Risk Reduction
COVID-19 as a Disaster
Climate Change
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
105
88
0.838
* Total i10 IndexRankings
Ranking Based On Selection :14
vulnerability
adaptation
climate change
development
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
102
84
0.824
* Total i10 IndexRankings
Ranking Based On Selection :15
Environmental health
climate change
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
99
93
0.939
* Total i10 IndexRankings
Ranking Based On Selection :16
Adsorption
Water treatment
nanotechnology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
98
85
0.867
* Total i10 IndexRankings
Ranking Based On Selection :17
Microbiologie de l'Environnement
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
96
86
0.896
* Total i10 IndexRankings
Ranking Based On Selection :18
water resources analysis and modelling
water quality analysis and remediation
surface and groundwater hydrology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
95
91
0.958
* Total i10 IndexRankings
Ranking Based On Selection :19
wastewater treatment
nature-based solutions
sanitation
SDG
water reuse
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
95
80
0.842
* Total i10 IndexRankings
Ranking Based On Selection :20
Mining Environment
Solid Waste
Valorization
Mineral Processing
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
94
87
0.926
* Total i10 IndexRankings
Ranking Based On Selection :21
Environmental Engineering
Wastewater Treatment
Environmental Modeling
Pollution
Waste Management
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
92
88
0.957
* Total i10 IndexRankings
Ranking Based On Selection :22
Environmental Science
Reproductive Toxicology
Endocrine Disruption
Hepatotoxicity
Drug Toxicity
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
92
74
0.804
* Total i10 IndexRankings
Ranking Based On Selection :23
Environmental Education
Social Learning
Transformative Learning
Critical theory
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
92
56
0.609
* Total i10 IndexRankings
Ranking Based On Selection :24
Environmental Health
WaSH
Resilience Measurement
Aquatic Ecology
Water Security
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
87
79
0.908
* Total i10 IndexRankings
Ranking Based On Selection :25
Advanced Oxidation Processes
Ozone
UV
Electrolysis
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
82
60
0.732
Mazharuddin Khan
Addis Ababa University
Addis Ababa, Ethiopia
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
319
179
0.561
enviornmental science
enviornmental biology
Charlie Shackleton
Rhodes University
Grahamstown, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
311
226
0.727
Faizal Bux
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
208
176
0.846
Wastewater Technology
Algal Biotechnology
Biofuels
Bioremediation
George Ekama
University of Cape Town
Cape Town, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
196
100
0.510
Environmental Engineerning
Charles Mbohwa
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
175
140
0.800
sustainability engineering
biogas
LCA
Future Technologies
Ali Akbar Zinatizadeh
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
163
140
0.859
Wastewater treatment technologies
Bioreactors
Membrane technology
Water reuse
Microbial fuel
Abdelazim M Negm
Zagazig University
Sharqia, Egypt
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
160
111
0.694
RS/GIS_Water Resources
Hydrology and Groundwater
Environmental Engineering
Sustainable and green environment
Hydrodynamic mo
Mark New
University of Cape Town
Cape Town, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
144
123
0.854
Harald Winkler
University of Cape Town
Cape Town, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
130
75
0.577
climate change mitigation
poverty
global stocktake
policy analysis
sustainable development
Chandima Gomes
University of the Witwatersrand
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
129
89
0.690
High Voltage Engineering
Lightning
EMI/EMC
Environmental Science
Extreme Natural Events
MNB Momba
Tshwane University of Technology
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
122
83
0.680
Water Microbiology
nanotechnology
biotechnology
Hakim Lounici
Université de Bouira
Bouïra, Algeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
108
87
0.806
Génie de l'Environnement
Génie des Procédés
Chimie de l'Environnement
Godwell Nhamo
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
105
88
0.838
SDGs
Disaster Risk Reduction
COVID-19 as a Disaster
Climate Change
Gina Ziervogel
University of Cape Town
Cape Town, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
102
84
0.824
vulnerability
adaptation
climate change
development
Caradee Y. Wright
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
99
93
0.939
Environmental health
climate change
Maurice S. Onyango
Tshwane University of Technology
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
98
85
0.867
Adsorption
Water treatment
nanotechnology
Slim Abdelkafi
Université de Sfax
Sfax, Tunisia
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
96
86
0.896
Microbiologie de l'Environnement
John Odiyo
University of Venda
Thohoyandou, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
95
91
0.958
water resources analysis and modelling
water quality analysis and remediation
surface and groundwater hydrology
Laila Mandi|L Mandi, Mandi L
Université Cadi Ayyad Marrakech
Marrakech, Morocco
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
95
80
0.842
wastewater treatment
nature-based solutions
sanitation
SDG
water reuse
Rachid Hakkou
Université Cadi Ayyad Marrakech
Marrakech, Morocco
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
94
87
0.926
Mining Environment
Solid Waste
Valorization
Mineral Processing
Mahmoud Nasr
Egypt Japan University of Science & Technology
Alexandria, Egypt
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
92
88
0.957
Environmental Engineering
Wastewater Treatment
Environmental Modeling
Pollution
Waste Management
Mokhtar Ibrahim Yousef
Alexandria University
Alexandria, Egypt
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
92
74
0.804
Environmental Science
Reproductive Toxicology
Endocrine Disruption
Hepatotoxicity
Drug Toxicity
Heila Lotz-Sisitka
Rhodes University
Grahamstown, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
92
56
0.609
Environmental Education
Social Learning
Transformative Learning
Critical theory
Argaw Ambelu
Jimma University
Jimma, Ethiopia
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
87
79
0.908
Environmental Health
WaSH
Resilience Measurement
Aquatic Ecology
Water Security
Joon Wun Kang
Addis Ababa University
Addis Ababa, Ethiopia
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
82
60
0.732
Advanced Oxidation Processes
Ozone
UV
Electrolysis