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
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-...
Stripper Wells goes from 1 BBL to 15 BBL for less $100/day
Feb 2017, Jenfitch, LLC working with a private independent oil service firm from Houston, Texas recently conducted a field study on four different low producing oil wells (Stripper Wells) in Pecos County, TX. These wells were generating 1-2 barrels of oil per day. Using several different methods of injecting JC 9450 into the well, the production increased up to 15 barrels per day for 5 days and then dropped to 10 barrels per day for two weeks. The service operator then injected 5 gallons per day of JC 9450 into...
Removing Legionella pneumophila and biofilms from water supply systems using plant essential oils
Antibacterial and antibiofilm activities of sage (Salvia officinalis), thyme (Thymus vulgaris), peppermint (Mentha x piperita) and lemon (Citrus limonum) essential oils (EOs), supplied as commercial preparations, were investigated on Legionella pneumophila. Results showed that all EOs had antibacterial activity. Lemon oil demonstrated the best activity, with minimum inhibition concentration (MIC) and minimum bactericidal concentration values detected as 0.83–1.25 and 1.25–3.75 μL/mL, respectively. Antibiofilm...
From biofilm ecology to reactors: a focused review
Biofilms are complex biostructures that appear on all surfaces that are regularly in contact with water. They are structurally complex, dynamic systems with attributes of primordial multicellular organisms and multifaceted ecosystems. The presence of biofilms may have a negative impact on the performance of various systems, but they can also be used beneficially for the treatment of water (defined herein as potable water, municipal and industrial wastewater, fresh/brackish/salt water bodies, groundwater) as well...
Fungal biodiversity and mycotoxigenic fungi in cooling-tower water systems in Istanbul, Turkey
This is the first study to assess fungal diversity and mycotoxigenic fungi in open recirculating cooling-tower (CT) water systems (biofilm and water phase). The production capability of mycotoxin from fungal isolates was also examined. The mean fungal count in 21 different water and biofilm samples was determined as 234 CFU/100 mL and 4 CFU/cm2. A total of 32 species were identified by internal transcribed spacer (ITS) sequencing. The most common isolated fungi belonged to the genera Aspergillus and Penicillium,...