Willi Gujer

17.9k total citations · 6 hit papers
156 papers, 13.4k citations indexed

About

Willi Gujer is a scholar working on Pollution, Industrial and Manufacturing Engineering and Environmental Engineering. According to data from OpenAlex, Willi Gujer has authored 156 papers receiving a total of 13.4k indexed citations (citations by other indexed papers that have themselves been cited), including 80 papers in Pollution, 42 papers in Industrial and Manufacturing Engineering and 33 papers in Environmental Engineering. Recurrent topics in Willi Gujer's work include Wastewater Treatment and Nitrogen Removal (78 papers), Water Systems and Optimization (26 papers) and Urban Stormwater Management Solutions (23 papers). Willi Gujer is often cited by papers focused on Wastewater Treatment and Nitrogen Removal (78 papers), Water Systems and Optimization (26 papers) and Urban Stormwater Management Solutions (23 papers). Willi Gujer collaborates with scholars based in Switzerland, Denmark and Japan. Willi Gujer's co-authors include Mogens Henze, Tove A. Larsen, Mark C.M. van Loosdrecht, Hansruedi Siegrist, Alexander J. B. Zehnder, Oskar Wanner, Kai M. Udert, Takashi Mino, Max Maurer and J. Kappeler and has published in prestigious journals such as Environmental Science & Technology, Water Research and Water Resources Research.

In The Last Decade

Willi Gujer

156 papers receiving 12.5k citations

Hit Papers

5 papers align trajectories

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.

Activated Sludge Model No. 3

1999 1.4k citations Willi Gujer, Mogens Henze et al. Water Science & Technology profile →
Activated Sludge Models ASM1, ASM2, ASM2d and ASM3

2015 830 citations Mogens Henze, Willi Gujer et al. profile →
Conversion Processes in Anaerobic Digestion

1983 745 citations Willi Gujer et al. Water Science & Technology profile →
Activated Sludge Model No. 3

1999 544 citations Willi Gujer, Mogens Henze et al. Water Science & Technology profile →
A multispecies biofilm model

1986 489 citations Oskar Wanner, Willi Gujer Biotechnology and Bioengineering profile →
A general model for single-sludge wastewater treatment systems

1987 468 citations Mogens Henze, C. P. Leslie Grady et al. Water Research profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Willi Gujer Switzerland	55	7.5k	4.8k	4.2k	2.3k	1.6k	156	13.4k
Mogens Henze Denmark	46	7.7k 1.0×	4.5k 0.9×	4.5k 1.1×	2.1k 0.9×	1.4k 0.9×	144	12.0k
Peter A. Vanrolleghem Belgium	71	8.6k 1.2×	4.7k 1.0×	7.0k 1.7×	3.8k 1.7×	2.1k 1.3×	681	20.0k
Hansruedi Siegrist Switzerland	63	13.5k 1.8×	4.7k 1.0×	6.1k 1.4×	2.0k 0.9×	5.6k 3.4×	158	18.9k
Jo Dewulf Belgium	62	2.7k 0.4×	3.2k 0.7×	1.6k 0.4×	2.6k 1.1×	677 0.4×	303	14.2k
Glen T. Daigger United States	46	5.4k 0.7×	3.4k 0.7×	3.2k 0.7×	1.8k 0.8×	1.3k 0.8×	252	8.9k
Qilin Wang China	71	8.6k 1.2×	4.6k 1.0×	4.6k 1.1×	1.7k 0.8×	1.9k 1.1×	488	18.3k
Jan Baeyens Belgium	60	3.6k 0.5×	4.0k 0.8×	4.5k 1.1×	854 0.4×	1.1k 0.7×	267	21.5k
Damien J. Batstone Australia	74	7.0k 0.9×	4.2k 0.9×	5.7k 1.3×	3.0k 1.3×	796 0.5×	279	17.8k
Eldon R. Rene Netherlands	60	3.6k 0.5×	2.5k 0.5×	2.3k 0.5×	1.5k 0.6×	1.7k 1.0×	395	13.2k
Krist V. Gernaey Denmark	60	3.7k 0.5×	2.0k 0.4×	2.8k 0.7×	1.1k 0.5×	662 0.4×	465	12.8k

Countries citing papers authored by Willi Gujer

Since Specialization

Citations

This map shows the geographic impact of Willi Gujer'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 Willi Gujer with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Willi Gujer more than expected).

Fields of papers citing papers by Willi Gujer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Willi Gujer. 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 Willi Gujer. The network helps show where Willi Gujer may publish in the future.

Co-authorship network of co-authors of Willi Gujer

This figure shows the co-authorship network connecting the top 25 collaborators of Willi Gujer. A scholar is included among the top collaborators of Willi Gujer 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 Willi Gujer. Willi Gujer is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Neumann, Marc B., Jörg Rieckermann, Thomas Hug, & Willi Gujer. (2015). Adaptation in hindsight: Dynamics and drivers shaping urban wastewater systems. Journal of Environmental Management. 151. 404–415. 14 indexed citations

Armbruster, Martin, et al.. (2010). Effects of aeration patterns on the flow field in wastewater aeration tanks. Water Research. 45(2). 810–818. 58 indexed citations

Sin, Gürkan, Krist V. Gernaey, Marc B. Neumann, Mark C.M. van Loosdrecht, & Willi Gujer. (2010). Global sensitivity analysis in wastewater treatment plant model applications: Prioritizing sources of uncertainty. Water Research. 45(2). 639–651. 127 indexed citations

Ronteltap, Mariska, et al.. (2010). Struvite precipitation from urine – Influencing factors on particle size. Water Research. 44(6). 2038–2046. 179 indexed citations

Gujer, Willi. (2009). Nitrification and me – A subjective review. Water Research. 44(1). 1–19. 96 indexed citations

Ronteltap, Mariska, Max Maurer, & Willi Gujer. (2007). The behaviour of pharmaceuticals and heavy metals during struvite precipitation in urine. Water Research. 41(9). 1859–1868. 174 indexed citations

Rieckermann, Jörg, Vojtěch Bareš, Oliver Kracht, Daniel Braun, & Willi Gujer. (2007). Estimating sewer leakage from continuous tracer experiments. Water Research. 41(9). 1960–1972. 23 indexed citations

Ronteltap, Mariska, Max Maurer, & Willi Gujer. (2007). Struvite precipitation thermodynamics in source-separated urine. Water Research. 41(5). 977–984. 189 indexed citations

Dominguez, Damian & Willi Gujer. (2006). Evolution of a wastewater treatment plant challenges traditional design concepts. Water Research. 40(7). 1389–1396. 49 indexed citations

10.

Manser, Reto, Willi Gujer, & Hansruedi Siegrist. (2006). Decay processes of nitrifying bacteria in biological wastewater treatment systems. Water Research. 40(12). 2416–2426. 75 indexed citations

11.

Hug, Thomas, Willi Gujer, & Hansruedi Siegrist. (2005). Rapid quantification of bacteria in activated sludge using fluorescence in situ hybridization and epifluorescence microscopy. Water Research. 39(16). 3837–3848. 14 indexed citations

12.

Manser, Reto, Willi Gujer, & Hansruedi Siegrist. (2005). Consequences of mass transfer effects on the kinetics of nitrifiers. Water Research. 39(19). 4633–4642. 150 indexed citations

13.

Kracht, Oliver, et al.. (2003). Stable isotopes of water as a natural tracer for infiltration into urban sewer systems. EGS - AGU - EUG Joint Assembly. 7852. 14 indexed citations

14.

Gujer, Willi & Urs von Gunten. (2003). A stochastic model of an ozonation reactor. Water Research. 37(7). 1667–1677. 36 indexed citations

15.

Kappeler, J. & Willi Gujer. (1994). Influences of wastewater composition and operating conditions on activated sludge bulking and scum formation. Water Science & Technology. 30(11). 181–189. 10 indexed citations

16.

Henze, Mogens & Willi Gujer. (1992). Interactions of wastewater, biomass and reactor configurations in biological treatment plants : proceedings of the IAWPRC Specialised Seminar, held in Copenhagen, Denmark, 21-23 August 1991. Pergamon Press eBooks. 1 indexed citations

17.

Gujer, Willi & V. Krejčí. (1988). Topics in urban storm water quality, planning, and management. 7 indexed citations

18.

Wanner, Oskar & Willi Gujer. (1986). A multispecies biofilm model. Biotechnology and Bioengineering. 28(3). 314–328. 489 indexed citations breakdown →

19.

Gujer, Willi, et al.. (1985). Kontinuierliche Messung der Respiration im Belebungsverfahren. DORA Eawag (Swiss Federal Institute of Aquatic Science and Technology (Eawag)). 126(8). 397–405. 2 indexed citations

20.

Grau, P., Paul M. Sutton, Mogens Henze, et al.. (1982). Report: Recommended notation for use in the description biological wastewater treatment process. Water Research. 16. 1501–1505. 3 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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