A.F.M. van Velsen

1.6k total citations · 1 hit paper
10 papers, 1.1k citations indexed

About

A.F.M. van Velsen is a scholar working on Industrial and Manufacturing Engineering, Fuel Technology and Mechanical Engineering. According to data from OpenAlex, A.F.M. van Velsen has authored 10 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 2 papers in Industrial and Manufacturing Engineering, 2 papers in Fuel Technology and 2 papers in Mechanical Engineering. Recurrent topics in A.F.M. van Velsen's work include Mining and Gasification Technologies (2 papers), Coal and Coke Industries Research (2 papers) and Wastewater Treatment and Nitrogen Removal (1 paper). A.F.M. van Velsen is often cited by papers focused on Mining and Gasification Technologies (2 papers), Coal and Coke Industries Research (2 papers) and Wastewater Treatment and Nitrogen Removal (1 paper). A.F.M. van Velsen collaborates with scholars based in Netherlands. A.F.M. van Velsen's co-authors include G. Lettinga, S.W. Hobma, Willem de Zeeuw, A. Klapwijk, F. Volkering, W.J. de Zeeuw and L.W. Hulshoff Pol and has published in prestigious journals such as Biotechnology and Bioengineering, Water Science & Technology and Socio-Environmental Systems Modeling.

In The Last Decade

A.F.M. van Velsen

10 papers receiving 995 citations

Hit 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.

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

1980 965 citations G. Lettinga, A.F.M. van Velsen et al. Biotechnology and Bioengineering profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
A.F.M. van Velsen Netherlands	7	609	572	390	228	204	10	1.1k
Willem de Zeeuw Netherlands	7	687 1.1×	628 1.1×	458 1.2×	240 1.1×	191 0.9×	8	1.2k
S.W. Hobma Netherlands	5	711 1.2×	659 1.2×	444 1.1×	257 1.1×	192 0.9×	6	1.2k
W.M. Wiegant Netherlands	15	491 0.8×	600 1.0×	292 0.7×	236 1.0×	185 0.9×	19	1.0k
I.W. Koster Netherlands	15	581 1.0×	1.0k 1.8×	310 0.8×	354 1.6×	299 1.5×	21	1.4k
Richard R. Dague United States	16	446 0.7×	509 0.9×	283 0.7×	195 0.9×	138 0.7×	31	809
A. Tilche Italy	18	741 1.2×	424 0.7×	366 0.9×	151 0.7×	356 1.7×	36	1.1k
M. Dohányos Czechia	17	661 1.1×	840 1.5×	494 1.3×	349 1.5×	412 2.0×	32	1.5k
Michael H. Gerardi United States	8	415 0.7×	720 1.3×	342 0.9×	365 1.6×	278 1.4×	10	1.2k
Renatto Moletta France	14	440 0.7×	266 0.5×	249 0.6×	164 0.7×	185 0.9×	23	843
M. Torrijos France	19	461 0.8×	632 1.1×	370 0.9×	306 1.3×	276 1.4×	38	1.2k

Countries citing papers authored by A.F.M. van Velsen

Since Specialization

Citations

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

Fields of papers citing papers by A.F.M. van Velsen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by A.F.M. van Velsen. 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.F.M. van Velsen. The network helps show where A.F.M. van Velsen may publish in the future.

Co-authorship network of co-authors of A.F.M. van Velsen

This figure shows the co-authorship network connecting the top 25 collaborators of A.F.M. van Velsen. A scholar is included among the top collaborators of A.F.M. van Velsen 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.F.M. van Velsen. A.F.M. van Velsen 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:

10 of 10 papers shown

1.

Volkering, F., et al.. (1998). A rapid method for predicting the residual concentration after biological treatment of oil-polluted soil.. 251–259. 6 indexed citations

2.

Velsen, A.F.M. van, et al.. (1991). High Gradient Magnetic Separation Technique for Wastewater Treatment. Water Science & Technology. 24(10). 195–203. 29 indexed citations

3.

Lettinga, G., et al.. (1985). The application of the UASB-reactor for the direct treatment of domestic wastewater under tropical conditions. Socio-Environmental Systems Modeling. 259–276. 10 indexed citations

4.

Lettinga, G., S.W. Hobma, W.J. de Zeeuw, et al.. (1983). Use of the Upflow Anaerobic Sludge Blanket Process in Waste Water Treatment. Socio-Environmental Systems Modeling. 1 indexed citations

5.

Lettinga, G., A.F.M. van Velsen, S.W. Hobma, Willem de Zeeuw, & A. Klapwijk. (1980). Use of the upflow sludge blanket (USB) reactor concept for biological wastewater treatment, especially for anaerobic treatment. Biotechnology and Bioengineering. 22(4). 699–734. 965 indexed citations breakdown →

6.

Lettinga, G., A.F.M. van Velsen, Willem de Zeeuw, & S.W. Hobma. (1979). Feasibility of the Upflow Anaerobic Sludge Blanket (UASB)-Process. 35–45. 11 indexed citations

7.

Velsen, A.F.M. van. (1979). Anaerobic digestion of piggery waste. 2. Start-up procedure. Netherlands Journal of Agricultural Science. 27(2). 142–152. 25 indexed citations

8.

Velsen, A.F.M. van, et al.. (1979). Anearobic digestion of piggery waste. 3. Influence of temperature. Netherlands Journal of Agricultural Science. 27(4). 255–267. 22 indexed citations

9.

Velsen, A.F.M. van, et al.. (1977). Anaerobe gisting voor de zuivering van afvalwater. Socio-Environmental Systems Modeling. 6. 379–395. 1 indexed citations

10.

Velsen, A.F.M. van. (1977). Anaerobic digestion of piggery waste. 1. The influence of detention time and manure concentration. Netherlands Journal of Agricultural Science. 25(3). 151–169. 44 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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