Citation Rankings
Highly Cited Researchers

Engineering & Technology / Environmental Science & Engineering Highly Cited Researchers 19 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
Malaysia
Ahmed El Shafie
Water Resources
Optimization Model
Dam Operation
Artificial Neural network
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,248
13,725
0.752
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Malaysia
Nik Meriam Nik Sulaiman
Environmental
Chemical
Pollution
Life cycle analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,714
3,626
0.470
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Malaysia
Shima Rahim Pouran
Environmental purification
Catalysis Science & Technology
Nano-technology
Wastewater treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,181
3,908
0.754
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Malaysia
Lim Po Teen|Po Teen LIM
Natural Sciences
Marine Sciences
Biological Science
Environmental Sciences
Harmful Algal Blooms
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,318
2,433
0.563
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Malaysia
Lai Sai Hin
Urban Stormwater Management
Integrated River Basin Management
Water Resources Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,772
3,235
0.858
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Malaysia
Rosazlin Abdullah
Environmental Soil Chemistry
Biochar
Soil Fertility
Composting
Waste Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,299
2,770
0.840
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Malaysia
Noor Zalina Mahmood
waste
mfa
lca
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,205
1,213
0.550
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Malaysia
Nurul Aida Mohamed
Photocatalyst
Water Splitting
Nanomaterials
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,692
1,557
0.920
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Malaysia
Nuruol Syuhadaa Mohd
Wastewater Treatment
Environmental Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,688
1,584
0.938
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Malaysia
Hazreena Hussein
Environment–Behaviour interactions
Inclusive access to outdoor environments
Multi-sensory stimulation environments
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,514
907
0.599
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Malaysia
Pozi Milow
environmental impact assessment
environmental resources
environmental monitoring
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,471
934
0.635
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Malaysia
Archina Buthiyappan|Buthiyappan. A
Green Material
Wastewater Treatment
CO2 adsorption
Sustainable Waste Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,470
1,309
0.890
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Malaysia
Majid Mirzaei
Climate Change
Hydrology
Flood Modeling
Uncertainty analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,006
749
0.745
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Malaysia
Mohammad Reza Delsouz Khaki
Environmental engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
972
716
0.737
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Malaysia
Rosli H Mahat
Environmental Radiation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
698
313
0.448
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Malaysia
Iman Husain
membrane filtration
Bioenvironmental engineering
wastewater
biochemical engineering
waste management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
202
126
0.624
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Malaysia
Shanmuga Kittappa
environmental engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
158
125
0.791
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Malaysia
Adam Tan Tiek Aun|TAN TIEK AUN
Environmental Engineering
Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
75
67
0.893
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Malaysia
Ks Phuah
Air Pollution
Indoor Environmental Quality
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9
7
0.778
* Total Citation Counts Rankings
Rankings
47,055
Malaysia
94
12
Ranking Based On Selection: 1
Ahmed El Shafie
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,248
13,725
0.752
Water Resources
Optimization Model
Dam Operation
Artificial Neural network
* Total Citation Counts Rankings
Rankings
134,499
Malaysia
438
65
Ranking Based On Selection: 2
Nik Meriam Nik Sulaiman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,714
3,626
0.470
* Total Citation Counts Rankings
Rankings
201,794
Malaysia
805
119
Ranking Based On Selection: 3
Shima Rahim Pouran
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,181
3,908
0.754
Environmental purification
Catalysis Science & Technology
Nano-technology
Wastewater treatment
* Total Citation Counts Rankings
Rankings
239,744
Malaysia
1,033
143
Ranking Based On Selection: 4
Lim Po Teen|Po Teen LIM
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,318
2,433
0.563
Natural Sciences
Marine Sciences
Biological Science
Environmental Sciences
Harmful Algal Blooms
* Total Citation Counts Rankings
Rankings
270,642
Malaysia
1,233
164
Ranking Based On Selection: 5
Lai Sai Hin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,772
3,235
0.858
Urban Stormwater Management
Integrated River Basin Management
Water Resources Management
* Total Citation Counts Rankings
Rankings
303,601
Malaysia
1,507
202
Ranking Based On Selection: 6
Rosazlin Abdullah
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,299
2,770
0.840
Environmental Soil Chemistry
Biochar
Soil Fertility
Composting
Waste Management
* Total Citation Counts Rankings
Rankings
417,271
Malaysia
2,456
319
Ranking Based On Selection: 7
Noor Zalina Mahmood
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,205
1,213
0.550
* Total Citation Counts Rankings
Rankings
502,580
Malaysia
3,236
389
Ranking Based On Selection: 8
Nurul Aida Mohamed
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,692
1,557
0.920
* Total Citation Counts Rankings
Rankings
503,390
Malaysia
3,242
391
Ranking Based On Selection: 9
Nuruol Syuhadaa Mohd
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,688
1,584
0.938
* Total Citation Counts Rankings
Rankings
540,212
Malaysia
3,633
420
Ranking Based On Selection: 10
Hazreena Hussein
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,514
907
0.599
Environment–Behaviour interactions
Inclusive access to outdoor environments
Multi-sensory stimulation environments
* Total Citation Counts Rankings
Rankings
550,027
Malaysia
3,731
435
Ranking Based On Selection: 11
Pozi Milow
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,471
934
0.635
environmental impact assessment
environmental resources
environmental monitoring
* Total Citation Counts Rankings
Rankings
550,175
Malaysia
3,733
436
Ranking Based On Selection: 12
Archina Buthiyappan|Buthiyappan. A
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,470
1,309
0.890
Green Material
Wastewater Treatment
CO2 adsorption
Sustainable Waste Management
* Total Citation Counts Rankings
Rankings
684,531
Malaysia
5,151
575
Ranking Based On Selection: 13
Majid Mirzaei
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,006
749
0.745
Climate Change
Hydrology
Flood Modeling
Uncertainty analysis
* Total Citation Counts Rankings
Rankings
696,793
Malaysia
5,285
585
Ranking Based On Selection: 14
Mohammad Reza Delsouz Khaki
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
972
716
0.737
* Total Citation Counts Rankings
Rankings
813,268
Malaysia
6,474
667
Ranking Based On Selection: 15
Rosli H Mahat
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
698
313
0.448
* Total Citation Counts Rankings
Rankings
1,307,618
Malaysia
11,927
1,217
Ranking Based On Selection: 16
Iman Husain
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
202
126
0.624
membrane filtration
Bioenvironmental engineering
wastewater
biochemical engineering
waste management
* Total Citation Counts Rankings
Rankings
1,413,993
Malaysia
13,253
1,300
Ranking Based On Selection: 17
Shanmuga Kittappa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
158
125
0.791
* Total Citation Counts Rankings
Rankings
1,712,249
Malaysia
17,110
1,605
Ranking Based On Selection: 18
Adam Tan Tiek Aun|TAN TIEK AUN
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
75
67
0.893
* Total Citation Counts Rankings
Rankings
2,226,242
Malaysia
22,098
1,791
Ranking Based On Selection: 19
Ks Phuah
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9
7
0.778
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