D-Index & Metrics Best Publications
Per Halkjær Nielsen

Per Halkjær Nielsen

Biology and Biochemistry
Denmark
2022

D-Index & Metrics D-index (Discipline H-index) only includes papers and citation values for an examined discipline in contrast to General H-index which accounts for publications across all disciplines.

Discipline name D-index D-index (Discipline H-index) only includes papers and citation values for an examined discipline in contrast to General H-index which accounts for publications across all disciplines. Citations Publications World Ranking National Ranking
Biology and Biochemistry D-index 86 Citations 27,462 274 World Ranking 1302 National Ranking 10

Research.com Recognitions

Awards & Achievements

2022 - Research.com Biology and Biochemistry in Denmark Leader Award

Overview

What is he best known for?

The fields of study he is best known for:

  • Bacteria
  • Enzyme
  • Gene

Per Halkjær Nielsen spends much of his time researching Activated sludge, Bacteria, Biochemistry, Sewage treatment and Wastewater. Per Halkjær Nielsen interconnects Microorganism, Chromatography, Extracellular polymeric substance, Lipase and Dewatering in the investigation of issues within Activated sludge. His Bacteria research incorporates themes from Botany and Microbiology.

Per Halkjær Nielsen studied Biochemistry and Microbial metabolism that intersect with Stable-isotope probing and Substrate. His research in Sewage treatment intersects with topics in Biomass, Ecology, Clarifier, Microbial ecology and Pulp and paper industry. His Wastewater research is multidisciplinary, relying on both Environmental chemistry, Organic matter and Effluent.

His most cited work include:

  • Extraction of extracellular polymers from activated sludge using a cation exchange resin (1653 citations)
  • Enzymatic activity in the activated-sludge floc matrix (934 citations)
  • Complete nitrification by Nitrospira bacteria (922 citations)

What are the main themes of his work throughout his whole career to date?

The scientist’s investigation covers issues in Activated sludge, Bacteria, Microbiology, Sewage treatment and Biochemistry. The concepts of his Activated sludge study are interwoven with issues in Microorganism and Pulp and paper industry. His work in Bacteria addresses issues such as Metagenomics, which are connected to fields such as Computational biology.

His Microbiology research is multidisciplinary, incorporating perspectives in Actinobacteria and Biofilm. He has included themes like Wastewater and Ecology, Anoxic waters in his Sewage treatment study. His Wastewater research focuses on subjects like Environmental chemistry, which are linked to Anaerobic exercise.

He most often published in these fields:

  • Activated sludge (30.09%)
  • Bacteria (20.88%)
  • Microbiology (20.00%)

What were the highlights of his more recent work (between 2016-2021)?

  • Sewage treatment (16.28%)
  • Activated sludge (30.09%)
  • Enhanced biological phosphorus removal (15.58%)

In recent papers he was focusing on the following fields of study:

Per Halkjær Nielsen mostly deals with Sewage treatment, Activated sludge, Enhanced biological phosphorus removal, Microorganism and Biochemistry. His Sewage treatment study incorporates themes from Ecology, Ecosystem, Wastewater, Anaerobic digestion and Pulp and paper industry. The Activated sludge study combines topics in areas such as Chloroflexi, Fouling and Botany.

His study explores the link between Enhanced biological phosphorus removal and topics such as Anoxic waters that cross with problems in Denitrifying bacteria. His Biochemistry research incorporates elements of Nitrite and Bacteria. His research in Bacteria focuses on subjects like Metagenomics, which are connected to Function.

Between 2016 and 2021, his most popular works were:

  • Global diversity and biogeography of bacterial communities in wastewater treatment plants. (122 citations)
  • A Critical Assessment of the Microorganisms Proposed to be Important to Enhanced Biological Phosphorus Removal in Full-Scale Wastewater Treatment Systems. (102 citations)
  • Cultivation and characterization of Candidatus Nitrosocosmicus exaquare, an ammonia-oxidizing archaeon from a municipal wastewater treatment system (94 citations)

In his most recent research, the most cited papers focused on:

  • Bacteria
  • Enzyme
  • Gene

His primary areas of study are Enhanced biological phosphorus removal, Activated sludge, Candidatus Accumulibacter, Biochemistry and Sewage treatment. His Enhanced biological phosphorus removal research includes elements of Phosphorus and Microbiology. His study in Activated sludge is interdisciplinary in nature, drawing from both Anaerobic exercise, Chemical engineering and Fouling.

The study incorporates disciplines such as Polyphosphate-accumulating organisms, Environmental chemistry, Anoxic waters and Candidatus Accumulibacter phosphatis in addition to Candidatus Accumulibacter. His research integrates issues of Nitrite and Bacteria in his study of Biochemistry. He has researched Sewage treatment in several fields, including Ecology, Ecosystem, Biotechnology, Wastewater and Taxonomic rank.

This overview was generated by a machine learning system which analysed the scientist’s body of work. If you have any feedback, you can contact us here.

Best Publications

Extraction of extracellular polymers from activated sludge using a cation exchange resin

Bo Frølund;Rikke Palmgren;Kristian Keiding;Per Halkjær Nielsen.
Water Research (1996)

2437 Citations

Enzymatic activity in the activated-sludge floc matrix

B. Frølund;T. Griebe;P. H. Nielsen.
Applied Microbiology and Biotechnology (1995)

1298 Citations

Complete nitrification by Nitrospira bacteria

Holger Daims;Elena V. Lebedeva;Petra Pjevac;Ping Han.
Nature (2015)

1225 Citations

Genome sequences of rare, uncultured bacteria obtained by differential coverage binning of multiple metagenomes

Mads Albertsen;Philip Hugenholtz;Adam Skarshewski;Kåre Lehmann Nielsen.
Nature Biotechnology (2013)

1054 Citations

Complete nitrification by a single microorganism

Maartje A. H. J. van Kessel;Daan R. Speth;Mads Albertsen;Per Halkjær Nielsen.
Nature (2015)

918 Citations

In Situ Characterization of Nitrospira-Like Nitrite-Oxidizing Bacteria Active in Wastewater Treatment Plants

Holger Daims;Jeppe L. Nielsen;Per H. Nielsen;Karl-Heinz Schleifer.
Applied and Environmental Microbiology (2001)

907 Citations

Combination of fluorescent in situ hybridization and microautoradiography-a new tool for structure-function analyses in microbial ecology

Natuscka Lee;Per Halkjær Nielsen;Kjær Holm Andreasen;Stefan Juretschko.
Applied and Environmental Microbiology (1999)

780 Citations

Measurement of pools of protein, carbohydrate and lipid in domestic wastewater

Kamma Raunkjær;Thorkild Hvitved-Jacobsen;Per Halkjær Nielsen.
Water Research (1994)

611 Citations

Microbial Ecology of Activated Sludge

Robert Seviour;Per Halkjær Nielsen.
Water intelligence online (2010)

469 Citations

Role of sulfate‐reducing bacteria in corrosion of mild steel: A review

Whonchee Lee;Zbigniew Lewandowski;P. H. Nielsen;W. A. Hamilton.
Biofouling (1995)

466 Citations

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