Author
Rikke Palmgren
Bio: Rikke Palmgren is an academic researcher from Aalborg University. The author has contributed to research in topics: Activated sludge & Lysis. The author has an hindex of 5, co-authored 5 publications receiving 2335 citations.
Papers
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TL;DR: In this article, the extraction of water soluble extracellular polymeric substances (EPS) from activated sludge was investigated, which consisted mainly of protein but also humic compounds, carbohydrates, uronic acids and DNA.
2,203 citations
TL;DR: A conceptual biofilm model taking into account microbial physiology with regard to production of extracellular polymers and their transformation within the biofilm is suggested and can be helpful in structuring the design and evaluation of biofilm experiments focusing on biofilm structure and properties.
305 citations
TL;DR: More deoxyribonucleic acid (DNA) was measured than could be accounted for by cell counts in activated sludge flocs, a mixed culture of sludge bacteria, and a pure culture of Pseudomonas putida, which means that estimations of cell number by measurement and correlation with DNA content will result in an overestimation of the cell number or biomass by up to a factor 10.
60 citations
TL;DR: There are many difficulties in measuring cell surface hydrophobicity since other cell surface properties, such as surface charge, influence the measurement methods, and the MATH test was employed to establish how assay conditions influenced the results.
28 citations
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TL;DR: The functions, properties and constituents of the EPS matrix that make biofilms the most successful forms of life on earth are described.
Abstract: The microorganisms in biofilms live in a self-produced matrix of hydrated extracellular polymeric substances (EPS) that form their immediate environment. EPS are mainly polysaccharides, proteins, nucleic acids and lipids; they provide the mechanical stability of biofilms, mediate their adhesion to surfaces and form a cohesive, three-dimensional polymer network that interconnects and transiently immobilizes biofilm cells. In addition, the biofilm matrix acts as an external digestive system by keeping extracellular enzymes close to the cells, enabling them to metabolize dissolved, colloidal and solid biopolymers. Here we describe the functions, properties and constituents of the EPS matrix that make biofilms the most successful forms of life on earth.
7,041 citations
TL;DR: As EPS are very complex, the knowledge regarding EPS is far from complete and much work is still required to fully understand their precise roles in the biological treatment process.
2,260 citations
TL;DR: In this paper, a review of more than 300 publications on membrane bioreactor fouling is presented, and the authors propose updated definitions of key parameters such as critical and sustainable flux, along with standard methods to determine and measure the different fractions of the biomass.
2,113 citations
TL;DR: Although EPS is essential to sludge floc formation, excessive EPS in the form of LB-EPS could weaken cell attachment and the floc structure, resulting in poor bioflocculation, greater cell erosion and retarded sludge-water separation.
1,508 citations
TL;DR: In response to a suggestion by the Biofilms 2007 organizing committee to hold an evening session on biofilm extracellular polymeric substances (EPS), an exceptionally inspiring event followed contributions by Ken Bayles, Alan Decho, Martina Hausner, Jan Kreft, Thomas Neu, Per Nielsen, Ute Romling,
Abstract: In response to a suggestion by the Biofilms 2007 organizing committee to hold an evening session on biofilm extracellular polymeric substances (EPS), an exceptionally inspiring event followed contributions by Ken Bayles, Alan Decho, Martina Hausner, Jan Kreft, Thomas Neu, Per Nielsen, Ute Romling,
1,430 citations