Subject Rankings
Africa Engineering & Technology / Environmental Science & Engineering Subject Rankings 2025
AD Scientific Index (Alper-Doger Scientific Index) offers the broadest spectrum of branches, providing analysis in 13 main fields and 197 sub-branches at global, national, and regional levels. These analyses can be based on indicators such as the H-index, i10-index, and citation count, as well as their values from the last 6 years. As of Nov 11, 2024, rankings are according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in beta. This is due to the exclusion of (887.258) scientists categorized under 'others,' whose profiles cannot yet be determined, edited, or classified. As these fields are updated, the rankings will adjust accordingly. Please keep this in mind. See Also: [University Subject Rankings]
* Total H IndexRankings
Ranking Based On Selection
:1
Metrics
H-Index
i10 Index
Citation Counts
83
318
23,833
* Total H IndexRankings
Ranking Based On Selection
:2
Climate Change
Metrics
H-Index
i10 Index
Citation Counts
71
146
45,858
* Total H IndexRankings
Ranking Based On Selection
:3
Wastewater Technology
Algal Biotechnology
Biofuels
Bioremediation
Metrics
H-Index
i10 Index
Citation Counts
66
209
18,344
* Total H IndexRankings
Ranking Based On Selection
:4
Environmental Engineerning
Metrics
H-Index
i10 Index
Citation Counts
62
196
16,170
* Total H IndexRankings
Ranking Based On Selection
:5
enviornmental science
enviornmental biology
Metrics
H-Index
i10 Index
Citation Counts
60
321
17,882
* Total H IndexRankings
Ranking Based On Selection
:6
Wastewater treatment technologies
Bioreactors
Membrane technology
Water reuse
Microbial fuel
Metrics
H-Index
i10 Index
Citation Counts
54
164
15,795
* Total H IndexRankings
Ranking Based On Selection
:7
climate change mitigation
poverty
global stocktake
policy analysis
sustainable development
Metrics
H-Index
i10 Index
Citation Counts
53
130
14,960
* Total H IndexRankings
Ranking Based On Selection
:8
vulnerability
adaptation
climate change
development
Metrics
H-Index
i10 Index
Citation Counts
51
103
12,073
* Total H IndexRankings
Ranking Based On Selection
:9
Génie de l'Environnement
Génie des Procédés
Chimie de l'Environnement
Metrics
H-Index
i10 Index
Citation Counts
50
109
7,591
* Total H IndexRankings
Ranking Based On Selection
:10
Adsorption
Water treatment
nanotechnology
Metrics
H-Index
i10 Index
Citation Counts
49
99
8,375
* Total H IndexRankings
Ranking Based On Selection
:11
Environmental Science
Reproductive Toxicology
Endocrine Disruption
Hepatotoxicity
Drug Toxicity
Metrics
H-Index
i10 Index
Citation Counts
48
94
10,589
* Total H IndexRankings
Ranking Based On Selection
:12
sustainability engineering
biogas
LCA
Future Technologies
Metrics
H-Index
i10 Index
Citation Counts
46
191
8,808
* Total H IndexRankings
Ranking Based On Selection
:13
Climate Science
Metrics
H-Index
i10 Index
Citation Counts
43
76
10,644
* Total H IndexRankings
Ranking Based On Selection
:14
Water Microbiology
nanotechnology
biotechnology
Metrics
H-Index
i10 Index
Citation Counts
42
126
5,748
* Total H IndexRankings
Ranking Based On Selection
:15
Algal Biofuels
Biotechnology
Nutrient recovery
Metrics
H-Index
i10 Index
Citation Counts
41
47
7,343
* Total H IndexRankings
Ranking Based On Selection
:16
Environmental Engineering
Water Treatment
Desalination
Circular Economy
Metrics
H-Index
i10 Index
Citation Counts
41
61
6,642
* Total H IndexRankings
Ranking Based On Selection
:17
Advanced Oxidation Processes
Ozone
UV
Electrolysis
Metrics
H-Index
i10 Index
Citation Counts
41
83
9,906
* Total H IndexRankings
Ranking Based On Selection
:18
Biodiversity Loss
Environmental Degradation
Climate Adaptation
Nature based Solution
Metrics
H-Index
i10 Index
Citation Counts
40
80
6,326
* Total H IndexRankings
Ranking Based On Selection
:19
High Voltage Engineering
Lightning
EMI/EMC
Environmental Science
Extreme Natural Events
Metrics
H-Index
i10 Index
Citation Counts
40
133
8,307
* Total H IndexRankings
Ranking Based On Selection
:20
Microbiologie de l'Environnement
Metrics
H-Index
i10 Index
Citation Counts
39
100
4,447
* Total H IndexRankings
Ranking Based On Selection
:21
climate change
risk
biodiversity
health
sustainability
Metrics
H-Index
i10 Index
Citation Counts
38
63
12,569
* Total H IndexRankings
Ranking Based On Selection
:22
water resources analysis and modelling
water quality analysis and remediation
surface and groundwater hydrology
Metrics
H-Index
i10 Index
Citation Counts
38
98
5,187
* Total H IndexRankings
Ranking Based On Selection
:23
Climate change
sustainability
Metrics
H-Index
i10 Index
Citation Counts
38
78
15,059
* Total H IndexRankings
Ranking Based On Selection
:24
Environmental Ecotechnology
Metrics
H-Index
i10 Index
Citation Counts
38
76
4,656
* Total H IndexRankings
Ranking Based On Selection
:25
Environmental Engineering
Wastewater Treatment
Environmental Modeling
Pollution
Waste Management
Metrics
H-Index
i10 Index
Citation Counts
37
95
4,317
Charlie Shackleton
Rhodes University
Grahamstown, South Africa
Metrics
H-Index
i10-Index
Citation Counts
83
318
23,833
Mark New
University of Cape Town
Cape Town, South Africa
Metrics
H-Index
i10-Index
Citation Counts
71
146
45,858
Faizal Bux
Metrics
H-Index
i10-Index
Citation Counts
66
209
18,344
Wastewater Technology
Algal Biotechnology
Biofuels
Bioremediation
George Ekama
University of Cape Town
Cape Town, South Africa
Metrics
H-Index
i10-Index
Citation Counts
62
196
16,170
Environmental Engineerning
Mazharuddin Khan
Addis Ababa University
Addis Ababa, Ethiopia
Metrics
H-Index
i10-Index
Citation Counts
60
321
17,882
enviornmental science
enviornmental biology
Ali Akbar Zinatizadeh
University of South Africa
Pretoria, South Africa
Metrics
H-Index
i10-Index
Citation Counts
54
164
15,795
Wastewater treatment technologies
Bioreactors
Membrane technology
Water reuse
Microbial fuel
Harald Winkler
University of Cape Town
Cape Town, South Africa
Metrics
H-Index
i10-Index
Citation Counts
53
130
14,960
climate change mitigation
poverty
global stocktake
policy analysis
sustainable development
Gina Ziervogel
University of Cape Town
Cape Town, South Africa
Metrics
H-Index
i10-Index
Citation Counts
51
103
12,073
vulnerability
adaptation
climate change
development
Hakim Lounici
Université de Bouira
Bouïra, Algeria
Metrics
H-Index
i10-Index
Citation Counts
50
109
7,591
Génie de l'Environnement
Génie des Procédés
Chimie de l'Environnement
Maurice S. Onyango
Tshwane University of Technology
Pretoria, South Africa
Metrics
H-Index
i10-Index
Citation Counts
49
99
8,375
Adsorption
Water treatment
nanotechnology
Mokhtar Ibrahim Yousef
Alexandria University
Alexandria, Egypt
Metrics
H-Index
i10-Index
Citation Counts
48
94
10,589
Environmental Science
Reproductive Toxicology
Endocrine Disruption
Hepatotoxicity
Drug Toxicity
Charles Mbohwa
University of Johannesburg
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
46
191
8,808
sustainability engineering
biogas
LCA
Future Technologies
Christopher Lennard
University of Cape Town
Cape Town, South Africa
Metrics
H-Index
i10-Index
Citation Counts
43
76
10,644
MNB Momba
Tshwane University of Technology
Pretoria, South Africa
Metrics
H-Index
i10-Index
Citation Counts
42
126
5,748
Water Microbiology
nanotechnology
biotechnology
Ismail Rawat
Metrics
H-Index
i10-Index
Citation Counts
41
47
7,343
Algal Biofuels
Biotechnology
Nutrient recovery
Mohamed Chaker Ncibi
Mohammed VI Polytechnic University
Ben Guerir, Morocco
Metrics
H-Index
i10-Index
Citation Counts
41
61
6,642
Environmental Engineering
Water Treatment
Desalination
Circular Economy
Joon Wun Kang
Addis Ababa University
Addis Ababa, Ethiopia
Metrics
H-Index
i10-Index
Citation Counts
41
83
9,906
Advanced Oxidation Processes
Ozone
UV
Electrolysis
Chris Gordon|Christopher Gordon, C. Gordon
University of Ghana
Legon, Ghana
Metrics
H-Index
i10-Index
Citation Counts
40
80
6,326
Biodiversity Loss
Environmental Degradation
Climate Adaptation
Nature based Solution
Chandima Gomes
University of the Witwatersrand
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
40
133
8,307
High Voltage Engineering
Lightning
EMI/EMC
Environmental Science
Extreme Natural Events
Slim Abdelkafi
Université de Sfax
Sfax, Tunisia
Metrics
H-Index
i10-Index
Citation Counts
39
100
4,447
Microbiologie de l'Environnement
Christopher Trisos
University of Cape Town
Cape Town, South Africa
Metrics
H-Index
i10-Index
Citation Counts
38
63
12,569
climate change
risk
biodiversity
health
sustainability
John Odiyo
University of Venda
Thohoyandou, South Africa
Metrics
H-Index
i10-Index
Citation Counts
38
98
5,187
water resources analysis and modelling
water quality analysis and remediation
surface and groundwater hydrology
Barend Erasmus
University of Pretoria
Pretoria, South Africa
Metrics
H-Index
i10-Index
Citation Counts
38
78
15,059
Climate change
sustainability
Frank Kansiime
Makerere University
Kampala, Uganda
Metrics
H-Index
i10-Index
Citation Counts
38
76
4,656
Environmental Ecotechnology
Mahmoud Nasr
Egypt Japan University of Science & Technology
Alexandria, Egypt
Metrics
H-Index
i10-Index
Citation Counts
37
95
4,317
Environmental Engineering
Wastewater Treatment
Environmental Modeling
Pollution
Waste Management