Johannes Haarhoff

1.5k total citations
71 papers, 1.1k citations indexed

About

Johannes Haarhoff is a scholar working on Water Science and Technology, Civil and Structural Engineering and Industrial and Manufacturing Engineering. According to data from OpenAlex, Johannes Haarhoff has authored 71 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 25 papers in Water Science and Technology, 24 papers in Civil and Structural Engineering and 13 papers in Industrial and Manufacturing Engineering. Recurrent topics in Johannes Haarhoff's work include Water Systems and Optimization (20 papers), Water Treatment and Disinfection (13 papers) and Water resources management and optimization (10 papers). Johannes Haarhoff is often cited by papers focused on Water Systems and Optimization (20 papers), Water Treatment and Disinfection (13 papers) and Water resources management and optimization (10 papers). Johannes Haarhoff collaborates with scholars based in South Africa, United States and Netherlands. Johannes Haarhoff's co-authors include James K. Edzwald, HE Jacobs, John L. Cleasby, Bhekie B. Mamba, Thabo T.I. Nkambule, Rui W. M. Krause, L.C. Rietveld, Paul Jagals, Alex T. Kuvarega and Van Zyl and has published in prestigious journals such as SHILAP Revista de lepidopterología, Water Research and Desalination.

In The Last Decade

Johannes Haarhoff

68 papers receiving 955 citations

Peers

Johannes Haarhoff

WST

IME

HTM

Dorothee Spuhler Switzerland

C. Diaper Australia

Jennifer Stokes-Draut United States

Tamim Younos United States

Sybil Sharvelle United States

D. Bixio Belgium

Andrzej Listowski Australia

Darko Joksimovic Canada

Petr Hlavínek Czechia

Dharmappa Hagare Australia

Dorothee Spuhler Switzerland

Johannes Haarhoff

610 ×1.1

WST

291 ×1.2

IME

155 ×0.7

HTM

116 ×0.6

130 ×0.8

Citations per year, relative to Johannes Haarhoff Johannes Haarhoff (= 1×) peers Dorothee Spuhler

Countries citing papers authored by Johannes Haarhoff

Since Specialization

Citations

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

Fields of papers citing papers by Johannes Haarhoff

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Johannes Haarhoff

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

Haarhoff, Johannes. (2023). Introduction to Municipal Water Quality Management. 1 indexed citations

Ncube, Esper Jacobeth, et al.. (2016). Influence of Natural Organic Matter (NOM) Character on the Distribution of Chlorinated and Chloraminated Disinfection By-Products (DBPs) at Rand Water. EGU General Assembly Conference Abstracts. 1 indexed citations

Allen, Janette R. & Johannes Haarhoff. (2015). A proposal for the probabilistic sizing of rainwater tanks for constant demand. Journal of the South African Institution of Civil Engineering. 57(2). 6 indexed citations

Haarhoff, Johannes, et al.. (2012). After 150 years Pretoria's Fountains still a source of life. 11(4). 18–23. 1 indexed citations

Haarhoff, Johannes, et al.. (2011). The failure probability of welded steel pipelines in dolomitic areas. SHILAP Revista de lepidopterología. 53(1). 9–21. 1 indexed citations

Edzwald, James K. & Johannes Haarhoff. (2011). Seawater pretreatment for reverse osmosis: Chemistry, contaminants, and coagulation. Water Research. 45(17). 5428–5440. 138 indexed citations

Haarhoff, Johannes, et al.. (2011). The use of filter media to determine filter cleanliness. Physics and Chemistry of the Earth Parts A/B/C. 36(14-15). 1135–1140. 10 indexed citations

Haarhoff, Johannes, et al.. (2010). NOM characterization and removal at six Southern African water treatment plants. SHILAP Revista de lepidopterología. 3(1). 53–61. 21 indexed citations

Haarhoff, Johannes, et al.. (2010). Rational design of domestic biosand filters. Journal of Water Supply Research and Technology—AQUA. 59(1). 1–15. 43 indexed citations

10.

Haarhoff, Johannes & L.C. Rietveld. (2009). Public standpipe design and maintenance for rural South Africa. SHILAP Revista de lepidopterología. 51(1). 6–14. 7 indexed citations

11.

Stewart, R.W., et al.. (2009). AziSA: Improving mining decisions with real-time data. Journal of the Southern African Institute of Mining and Metallurgy. 109(1). 15–21. 2 indexed citations

12.

Haarhoff, Johannes, et al.. (2009). Municipal engineers in Johannesburg and Pretoria before 1910. SHILAP Revista de lepidopterología. 5(2).

13.

Zyl, Van & Johannes Haarhoff. (2007). Reliability analysis of municipal storage reservoirs using stochastic analysis. ResearchSpace (University of Auckland). 49(3). 27–32. 3 indexed citations

14.

Clements, Mark & Johannes Haarhoff. (2007). Filter media expansion during backwash: The effect of biological activity. Water SA. 30(5). 6 indexed citations

15.

Haarhoff, Johannes, et al.. (2004). An improvement on the power law for the description of particle size distributions in potable water treatment. Water Research. 39(2-3). 305–313. 24 indexed citations

16.

Jacobs, HE & Johannes Haarhoff. (2004). Application of a residential end-use model for estimating cold and hot water demand, wastewater flow and salinity. Water SA. 30(3). 26 indexed citations

17.

Zyl, Van, et al.. (2003). Potential application of end-use demand modelling in South Africa : : technical paper. 45(2). 9–19. 8 indexed citations

18.

Haarhoff, Johannes, et al.. (1997). Properties of South African silica sand used for rapid filtration. Water SA. 23(1). 71–80. 1 indexed citations

19.

Haarhoff, Johannes & John L. Cleasby. (1989). Direct Filtration of Chlorella with Cationic Polymer. Journal of Environmental Engineering. 115(2). 348–366. 9 indexed citations

20.

Haarhoff, Johannes & John L. Cleasby. (1988). Comparing Aluminum and Iron Coagulants for In‐line Filtration of Cold Water. American Water Works Association. 80(4). 168–175. 33 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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