Hans‐Jørgen Albrechtsen

ORCID: 0000-0003-3483-7709
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About
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Research Areas
  • Water Treatment and Disinfection
  • Pesticide and Herbicide Environmental Studies
  • Groundwater flow and contamination studies
  • Wastewater Treatment and Nitrogen Removal
  • Pharmaceutical and Antibiotic Environmental Impacts
  • Social and Educational Sciences
  • Water Quality Monitoring and Analysis
  • Microbial bioremediation and biosurfactants
  • Water Systems and Optimization
  • Microbial Community Ecology and Physiology
  • Constructed Wetlands for Wastewater Treatment
  • Water Quality Monitoring Technologies
  • Radioactive element chemistry and processing
  • Urban Stormwater Management Solutions
  • Wastewater Treatment and Reuse
  • Environmental remediation with nanomaterials
  • Analytical chemistry methods development
  • Landfill Environmental Impact Studies
  • Education, Healthcare and Sociology Research
  • Fecal contamination and water quality
  • Groundwater and Isotope Geochemistry
  • Water resources management and optimization
  • Toxic Organic Pollutants Impact
  • Environmental Science and Water Management
  • Microbial Fuel Cells and Bioremediation

Technical University of Denmark
2016-2025

Total (France)
2021

Danish Geotechnical Society
2019

University of Guelph
2002

Geological Survey of Denmark and Greenland
2002

New Orleans Public Library
2002

Centre for Sustainable Energy
2001

Abstract Landfill leachate contains a variety of pollutants that may potentially contaminate the ground water and affect quality surface waters well waters. The literature has been critically reviewed in order to assess attenuation processes governing contaminants leachate‐affected aquifers. After an introductory section on composition, physical chemical frameworks for are discussed terms dilution/dispersion redox zones plume, respectively. A separate focuses microbiology occurrence bacteria...

10.1080/10643389409388463 article EN Critical Reviews in Environmental Science and Technology 1994-06-01

ABSTRACT In this study, we examined the long-term development of overall structural morphology and community composition a biofilm formed in model drinking water distribution system with biofilms from 1 day to 3 years old. Visualization subsequent quantification showed how developed an initial attachment single cells through formation independent microcolonies reaching 30 μm thickness final looser structure average 14.1 covering 76% surface. An analysis by use terminal restriction fragment...

10.1128/aem.69.11.6899-6907.2003 article EN Applied and Environmental Microbiology 2003-11-01

Here, we document microbial communities in rapid gravity filtration units, specifically serial sand filters (RSFs), termed prefilters (PFs) and after- (AFs), fed with anoxic groundwaters low organic carbon to prepare potable waters. A comprehensive 16S rRNA-based amplicon sequencing survey revealed a core RSF microbiome comprising few bacterial taxa (29-30 genera) dominated by Nitrospirae, Proteobacteria Acidobacteria, strikingly high abundance (75-87±18%) across five examined waterworks...

10.1038/ismej.2016.16 article EN cc-by-nc-nd The ISME Journal 2016-03-08

Today, microbial drinking water quality is monitored through either time-consuming laboratory methods or indirect on-line measurements. Results are thus delayed insufficient to support proactive action. A novel, optical, bacteria sensor with a 10-minute time resolution has been developed. The based on 3D image recognition, and the obtained pictures analyzed algorithms considering 59 quantified parameters. counts individual suspended particles classifies them as abiotic particles. technology...

10.1038/srep23935 article EN cc-by Scientific Reports 2016-04-04

ABSTRACT In a model drinking water distribution system characterized by low assimilable organic carbon content (<10 μg/liter) and no disinfection, the bacterial community was identified phylogenetic analysis of rRNA genes amplified from directly extracted DNA colonies formed on R2A plates. Biofilms defined periods age (14 days to 3 years) bulk samples were investigated. Culturable bacteria associated with Proteobacteria Bacteriodetes , whereas independently cultivation, 12 phyla detected...

10.1128/aem.71.12.8611-8617.2005 article EN Applied and Environmental Microbiology 2005-12-01

The bacterial abundance, distribution, and degradation potential (in terms of versus lack degradation) for four xenobiotic compounds in an aerobic aquifer sediment have been examined laboratory field experiments. studied were benzene, toluene, o-xylene, naphthalene (all at concentrations approximately 120 micrograms/liter). experiments ran 90 days 10 degrees C, which corresponded to the groundwater temperature. At end experiment, major part microbial biomass, quantified as acridine orange...

10.1128/aem.58.9.3020-3026.1992 article EN Applied and Environmental Microbiology 1992-09-01

Seven Danish rainwater systems were investigated with respect to the microbial water quality. The general microbiological quality (total numbers of bacteria (AODC)), and heterotrophic plate counts on R2A Plate Count Agar in toilets supplied approximately same as reference drinking water. However, 12 27 analysed samples one or more pathogens observed (Aeromonas sp., Pseudomonas aeruginosa, Legionella non-pneumophila, Campylobacter jejuni, Mycobacterium avium, Cryptosporidium sp.). These not...

10.2166/wst.2002.0694 article EN Water Science & Technology 2002-09-01
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