Ralf Otterpohl

3.8k total citations · 1 hit paper
92 papers, 2.8k citations indexed

About

Ralf Otterpohl is a scholar working on Industrial and Manufacturing Engineering, Water Science and Technology and Pollution. According to data from OpenAlex, Ralf Otterpohl has authored 92 papers receiving a total of 2.8k indexed citations (citations by other indexed papers that have themselves been cited), including 53 papers in Industrial and Manufacturing Engineering, 29 papers in Water Science and Technology and 22 papers in Pollution. Recurrent topics in Ralf Otterpohl's work include Wastewater Treatment and Reuse (42 papers), Constructed Wetlands for Wastewater Treatment (18 papers) and Wastewater Treatment and Nitrogen Removal (13 papers). Ralf Otterpohl is often cited by papers focused on Wastewater Treatment and Reuse (42 papers), Constructed Wetlands for Wastewater Treatment (18 papers) and Wastewater Treatment and Nitrogen Removal (13 papers). Ralf Otterpohl collaborates with scholars based in Germany, Egypt and Netherlands. Ralf Otterpohl's co-authors include Knut Wichmann, Fangyue Li, Holger Gulyas, Annelies Balkema, Heinz A. Preisig, Joachim Behrendt, T.A. Elmitwalli, Martin Oldenburg, Martina Winker and Matthias Grottker and has published in prestigious journals such as The Science of The Total Environment, Water Research and Journal of Environmental Management.

In The Last Decade

Ralf Otterpohl

92 papers receiving 2.7k 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.

Review of the technological approaches for grey water treatment and reuses

2009 484 citations Ralf Otterpohl et al. The Science of The Total Environment profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ralf Otterpohl Germany	27	1.6k	1.1k	613	452	419	92	2.8k
Marcos von Sperling Brazil	27	1.5k 0.9×	983 0.9×	681 1.1×	455 1.0×	150 0.4×	149	2.6k
C.A. Buckley South Africa	33	1.1k 0.7×	1.5k 1.4×	590 1.0×	309 0.7×	422 1.0×	172	3.6k
Fayyaz Ali Memon United Kingdom	28	989 0.6×	997 0.9×	474 0.8×	923 2.0×	288 0.7×	114	2.8k
G. Ho Australia	34	979 0.6×	1.1k 1.0×	610 1.0×	609 1.3×	153 0.4×	235	3.4k
Eran Friedler Israel	36	2.3k 1.4×	1.6k 1.5×	451 0.7×	1.4k 3.0×	888 2.1×	102	4.2k
Guenter Langergraber Austria	38	2.8k 1.7×	854 0.8×	930 1.5×	998 2.2×	155 0.4×	128	4.4k
Thrassyvoulos Manios Greece	30	1.3k 0.8×	555 0.5×	627 1.0×	258 0.6×	134 0.3×	121	3.5k
T. Stephenson United Kingdom	28	1.3k 0.8×	1.2k 1.1×	1.3k 2.1×	347 0.8×	135 0.3×	74	2.9k
Montse Meneses Spain	22	986 0.6×	679 0.6×	456 0.7×	438 1.0×	91 0.2×	61	2.1k
May A. Massoud Lebanon	20	729 0.4×	523 0.5×	285 0.5×	301 0.7×	183 0.4×	59	2.0k

Countries citing papers authored by Ralf Otterpohl

Since Specialization

Citations

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

Fields of papers citing papers by Ralf Otterpohl

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ralf Otterpohl

This figure shows the co-authorship network connecting the top 25 collaborators of Ralf Otterpohl. A scholar is included among the top collaborators of Ralf Otterpohl 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 Ralf Otterpohl. Ralf Otterpohl 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

Otterpohl, Ralf, et al.. (2025). Integrating rainwater harvesting and organic soil amendment to enhance crop yield and soil nutrients in agroforestry. Environment Development and Sustainability. 4 indexed citations

Otterpohl, Ralf, et al.. (2021). Agroecology for Food and Water Security in Times of Climate Consciousness: A Bibliometric Analysis of Peer-Reviewed Literature Published from 1990 to 2020. Sustainability. 13(9). 5064–5064. 6 indexed citations

Behrendt, Joachim, et al.. (2019). High-rate nitrification of saline wastewaters using fixed-bed reactors. Journal of Environmental Management. 243. 444–452. 21 indexed citations

Otterpohl, Ralf, et al.. (2016). Gestión sostenible del agua y de los residuos en zonas urbanas. POLI-RED (Revistas Digitales Politécnicas) (La Universidad Politécnica de Madrid). 1 indexed citations

Otterpohl, Ralf, et al.. (2016). Solar versus Non-Solar Urine Diversion Dehydration Toilets—Evaluation of Temperatures inside the Vaults of Different UDDT Systems. Journal of Environmental Protection. 7(9). 1221–1243. 1 indexed citations

Beier, Silvio, et al.. (2016). Measured and predicted environmental concentrations of carbamazepine, diclofenac, and metoprolol in small and medium rivers in northern Germany. Environmental Monitoring and Assessment. 188(8). 487–487. 35 indexed citations

Behrendt, Joachim, et al.. (2016). Pretreatment of Wastewater from Licorice Processing—A Preliminary Evaluation. Water Environment Research. 88(11). 2032–2039. 6 indexed citations

Otterpohl, Ralf, et al.. (2015). EVALUACIÓN DE LAS INFILTRACIONES AL SISTEMA DE DRENAJE MEDIANTE ANÁLISIS COMPARATIVO DE LA CONCENTRACIÓN DE CONTAMINANTES EN AGUA RESIDUAL. CASO DE ESTUDIO EN TEPIC, MÉXICO. Revista Internacional de Contaminación Ambiental. 31(1). 89–98. 1 indexed citations

Gulyas, Holger, et al.. (2015). Inadequacy of carbamazepine-spiked model wastewaters for testing photocatalysis efficiency. The Science of The Total Environment. 542(Pt A). 612–619. 11 indexed citations

10.

Otterpohl, Ralf, et al.. (2015). GREYWATER IN INDONESIA: CHARACTERISTIC AND TREATMENT SYSTEMS. 21(2). 98–114. 9 indexed citations

11.

Otterpohl, Ralf, et al.. (2015). Microbial Pathogens in Wastewater Treatment Plants (WWTP) in Hamburg. Journal of Toxicology and Environmental Health. 78(6). 381–387. 32 indexed citations

12.

Otterpohl, Ralf, et al.. (2014). Determination of pharmaceuticals in sewage sludge and biochar from hydrothermal carbonization using different quantification approaches and matrix effect studies. Analytical and Bioanalytical Chemistry. 407(3). 821–830. 39 indexed citations

13.

Otterpohl, Ralf, et al.. (2013). The Detection ofGiardiaCysts in a Large-Scale Wastewater Treatment Plant in Hamburg, Germany. Journal of Toxicology and Environmental Health. 76(8). 509–514. 15 indexed citations

14.

Gulyas, Holger, et al.. (2012). Combining activated carbon adsorption with heterogeneous photocatalytic oxidation: Lack of synergy for biologically treated greywater and tetraethylene glycol dimethyl ether. Environmental Technology. 34(11). 1393–1403. 18 indexed citations

15.

Polprasert, Chongrak, et al.. (2011). Treating swine wastewater by integrating earthworms into constructed wetlands. Journal of Environmental Science and Health Part A. 46(7). 800–804. 21 indexed citations

16.

Winker, Martina, et al.. (2010). Ryegrass uptake of carbamazepine and ibuprofen applied by urine fertilization. The Science of The Total Environment. 408(8). 1902–1908. 97 indexed citations

17.

Winker, Martina, et al.. (2008). A comparison of human pharmaceutical concentrations in raw municipal wastewater and yellowwater. The Science of The Total Environment. 399(1-3). 96–104. 70 indexed citations

18.

Winker, Martina, et al.. (2008). Comparison of analytical and theoretical pharmaceutical concentrations in human urine in Germany. Water Research. 42(14). 3633–3640. 50 indexed citations

19.

Otterpohl, Ralf, et al.. (2007). Potential Study of Using Earthworms as an Enhancement to Treat High Strength Wastewater. The Thai Journal of Veterinary Medicine. 37(4). 25–32. 8 indexed citations

20.

Otterpohl, Ralf, et al.. (2005). Absorption of odourous substances using selective gas–liquid separation processes. Waste Management. 25(9). 975–984. 9 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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