Case study of a system to prevent algal and biofilm build up in a decorative pond in front of a corporate headquarters.
- Danish Clean Water A/S - Danfoss A/S
- Algae and bacteria prevention in a decorative pond - Case Study
4 reasons chlorine dioxide should be your preferred sanitiser
To the lay-person, a commercial kitchen is just a floor and some equipment that needs a good clean regularly. They don’t understand the dangers of bacterial contamination and how easy it is for food to be affected. Most commercial kitchens will use bleach, or a similar sanitiser, to keep their space safe. Today, we will share with you the top five reasons you should be using chlorine dioxide instead. Chlorine dioxide is more effective. When we say that chlorine dioxide is more effective, we are referring...
Pentachlorophenol degradation by Pseudomonas fluorescens
Fluorescent Pseudomonads strains were considered as plant growth promoting bacteria. They exhibited antagonistic activities against phytopathogens and showed bio-fertilizing properties. The strain Pseudomonas fluorescens PsWw128, isolated from wastewater, can use the pentachlorophenol (PCP) as the sole source of carbon and energy. High-performance liquid chromatography (HPLC) and spectrophotometric methods were used to follow the PCP degradation and biomass PsWw128 formation. However, the removal efficiency of...
Heavy metal tolerance and removal potential in mixed-species biofilm
The aim of the study was to examine heavy metal tolerance (Cd2+, Zn2+, Ni2+ and Cu2+) of single- and mixed-species biofilms (Rhodotorula mucilaginosa and Escherichia coli) and to determine metal removal efficiency (Cd2+, Zn2+, Ni2+, Cu2+, Pb2+ and Hg2+). Metal tolerance was quantified by crystal violet assay and results were confirmed by fluorescence microscopy. Metal removal efficiency was determined by batch biosorption assay. The tolerance of the mixed-species biofilm was higher than the single-species biofilms....
Why you should be wary of using chlorine to treat drinking water
Clean drinking water is something we often take for granted. At the turn of a tap, we have access to chlorinated water for every day use. However, for people who don’t want or can’t access scheme water, there is often a question of how to treat other water sources to make them safe. Chlorine is the most common water treatment agent. It is used by the Department of Health in Western Australia because it is inexpensive and moderately effective. Fortunately Chlorine is not the only alternative for...
qPCR detection versus microscopy observations for assessing presence–absence of Didymosphenia ...
Microscopic versus qPCR (quantitative polymerase chain reaction) analyses were compared for the detection of Didymosphenia geminata in biofilms and water filtrates from seven Gaspésie rivers (Canada). For the qPCR approach, two DNA extraction kits (QIAamp DNA Micro Kit, Qiagen and PowerSoil DNA Isolation Kit, Mo Bio Laboratories) and two pairs of primers were considered. The pair of primers D602F/D753Rext did not amplify D. geminata DNA whereas the pair of primers D602F/D753R was specific for D. geminata. Presence-...