A. Klapwijk

3.6k total citations · 1 hit paper
80 papers, 2.6k citations indexed

About

A. Klapwijk is a scholar working on Pollution, Industrial and Manufacturing Engineering and Water Science and Technology. According to data from OpenAlex, A. Klapwijk has authored 80 papers receiving a total of 2.6k indexed citations (citations by other indexed papers that have themselves been cited), including 58 papers in Pollution, 22 papers in Industrial and Manufacturing Engineering and 15 papers in Water Science and Technology. Recurrent topics in A. Klapwijk's work include Wastewater Treatment and Nitrogen Removal (58 papers), Water Quality Monitoring and Analysis (11 papers) and Phosphorus and nutrient management (8 papers). A. Klapwijk is often cited by papers focused on Wastewater Treatment and Nitrogen Removal (58 papers), Water Quality Monitoring and Analysis (11 papers) and Phosphorus and nutrient management (8 papers). A. Klapwijk collaborates with scholars based in Netherlands, Russia and United States. A. Klapwijk's co-authors include G. Lettinga, Willem de Zeeuw, S.W. Hobma, A.F.M. van Velsen, Jan Peter van der Hoek, W.H. Rulkens, A. Kamstra, E.H. Eding, J.A.J. Verreth and E.A. Huisman and has published in prestigious journals such as Water Research, Bioresource Technology and Environmental Pollution.

In The Last Decade

A. Klapwijk

77 papers receiving 2.4k citations

Hit Papers

align trajectories sort by overperformance

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Use of the upflow sludge blanket (USB) reactor concept for biological wastewater treatment, especially for anaerobic treatment

1980 965 citations G. Lettinga, A. Klapwijk et al. profile →

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author						Papers	Cites
A. Klapwijk	1.5k	871	741	615	342	80	2.6k
Wayne J. Parker	1.1k 0.7×	785 0.9×	619 0.8×	557 0.9×	671 2.0×	196	2.7k
Ronald L. Droste	1.1k 0.8×	1.2k 1.4×	909 1.2×	1.3k 2.2×	534 1.6×	86	3.1k
Dianhai Yang	1.4k 1.0×	949 1.1×	813 1.1×	438 0.7×	493 1.4×	95	2.7k
GA Ekama	2.1k 1.4×	1.1k 1.3×	1.4k 1.9×	527 0.9×	326 1.0×	81	3.1k
René Moletta	1.1k 0.7×	673 0.8×	404 0.5×	401 0.7×	414 1.2×	24	2.2k
J.M. Garrido	1.7k 1.2×	1.0k 1.2×	944 1.3×	290 0.5×	313 0.9×	77	2.6k
S.T.‐L. Tay	1.4k 1.0×	642 0.7×	408 0.6×	455 0.7×	211 0.6×	36	1.9k
P. Ginestet	979 0.7×	573 0.7×	456 0.6×	371 0.6×	228 0.7×	36	1.7k
Hiroshi Tsuno	1.0k 0.7×	675 0.8×	565 0.8×	467 0.8×	363 1.1×	111	2.2k
James E. Alleman	1.0k 0.7×	500 0.6×	481 0.6×	389 0.6×	205 0.6×	74	2.4k

Countries citing papers authored by A. Klapwijk

Since Specialization

Citations

This map shows the geographic impact of A. Klapwijk's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by A. Klapwijk with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites A. Klapwijk more than expected).

Fields of papers citing papers by A. Klapwijk

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by A. Klapwijk. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by A. Klapwijk. The network helps show where A. Klapwijk may publish in the future.

Co-authorship network of co-authors of A. Klapwijk

This figure shows the co-authorship network connecting the top 25 collaborators of A. Klapwijk. A scholar is included among the top collaborators of A. Klapwijk based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with A. Klapwijk. A. Klapwijk is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Klapwijk, A., et al.. (2026). BioDeNOx: novel process for NOX removal from flue gases based on chemically enhanced biological NO and iron reduction. Socio-Environmental Systems Modeling. 341–344.

Kassab, Ghada, et al.. (2010). Sequential anaerobic–aerobic treatment for domestic wastewater – A review. Bioresource Technology. 101(10). 3299–3310. 112 indexed citations

Tawfik, Ahmed & A. Klapwijk. (2010). Polyurethane rotating disc system for post-treatment of anaerobically pre-treated sewage. Journal of Environmental Management. 91(5). 1183–1192. 20 indexed citations

Klapwijk, A., et al.. (2008). Development of a test method to assess the sludge reduction potential of aquatic organisms in activated sludge. Bioresource Technology. 99(17). 8360–8366. 40 indexed citations

Elissen, H.J.H., et al.. (2008). Population dynamics of free-swimming Annelida in four Dutch wastewater treatment plants in relation to process characteristics. Hydrobiologia. 605(1). 131–142. 17 indexed citations

Tawfik, Ahmed, A. Klapwijk, Fatma A. El‐Gohary, & G. Lettinga. (2005). Potentials of using a rotating biological contactor (RBC) for post-treatment of anaerobically pre-treated domestic wastewater. Biochemical Engineering Journal. 25(1). 89–98. 30 indexed citations

Roeleveld, P. J., et al.. (2004). Dutch analysis for P-recovery from municipal wastewater. Water Science & Technology. 49(10). 191–199. 6 indexed citations

Kalyuzhnyi, S. V., et al.. (2003). Sustainable Treatment and Reuse of Diluted Pig Manure Streams in Russia: From Laboratory Trials to Full-Scale Implementation. Applied Biochemistry and Biotechnology. 109(1-3). 77–94. 8 indexed citations

Klapwijk, A., et al.. (2002). Mesophilic and thermophilic activated sludge post-treatment of paper mill process water. Water Research. 36(7). 1869–1879. 37 indexed citations

10.

Kalyuzhnyi, S. V., et al.. (2002). Combined biological and physico-chemical treatment of filtered pig manure wastewater: pilot investigations. Water Science & Technology. 45(12). 79–87. 16 indexed citations

11.

Schipper, Willem, et al.. (2001). Phosphate Recycling in the Phosphorus Industry. Environmental Technology. 22(11). 1337–1345. 82 indexed citations

12.

Klapwijk, A., et al.. (2000). Reduction of sludge production in an activated sludge system with the use of metazoa and other higher organisms. Socio-Environmental Systems Modeling. 369–375. 2 indexed citations

13.

Kalyuzhnyi, S. V., V. Sklyar, Vyacheslav Fedorovich, et al.. (1999). The development of biological methods for utilisation and treatment of diluted manure streams. Water Science & Technology. 40(1). 27 indexed citations

14.

Klapwijk, A., et al.. (1998). Control of intermittently aerated nitrogen removal plants by detection endpoints of nitrification and denitrification using respirometry only. Water Research. 32(5). 1700–1703. 29 indexed citations

15.

Bernardes, Ricardo Silveira & A. Klapwijk. (1996). Biological nutrient removal in a sequencing batch reactor treating domestic wastewater. Water Science & Technology. 33(3). 26 indexed citations

16.

Spanjers, Henri, Gustaf Olsson, & A. Klapwijk. (1993). Determining Influent Short-Term Biochemical Oxygen Demand by Combined Respirometry and Estimation. Water Science & Technology. 28(11-12). 401–414. 19 indexed citations

17.

Rinzema, A., et al.. (1990). Removal of ammonia from waste gas with a rotating biological contactor.. Socio-Environmental Systems Modeling. 81(4). 467–472. 4 indexed citations

18.

Hoek, Jan Peter van der, et al.. (1988). Modelling and optimization of the combined ion exchange/biological denitrification process for nitrate removal from ground water.. 21(3). 85–91. 1 indexed citations

19.

Hoek, Jan Peter van der, et al.. (1988). Combined ion exchange/biological denitrification for nitrate removal from ground water under different process conditions. Water Research. 22(6). 679–684. 62 indexed citations

20.

Spanjers, Henri & A. Klapwijk. (1986). Een continu respiratiemeter: nieuwe perspectieven voor het beheersen van het actiefslib - proces.. Socio-Environmental Systems Modeling. 19. 432–434. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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