*  Control of biofouling by xanthine oxidase on seawater reverse osmosis membranes from a desalination plant: enzyme production...
Control of biofouling on seawater reverse osmosis (SWRO) membranes is a major challenge as treatments can be expensive, damage the membrane material and often biocides do not remove the polymers in which bacteria are embedded. Biological control has been largely ignored for biofouling control. The objective of this study was to demonstrate the effectiveness of xanthine oxidase enzyme against complex fouling communities and then identify naturally occurring bacterial strains that produce the free radical generating enzyme. Initially, 64 bacterial strains were isolated from different locations of the Perth Seawater Desalination Plant. In our preceding study, 25/64 isolates were selected from the culture collection as models for biofouling studies, based on their prevalence in comparison to the genomic bacterial community. In this study, screening of these model strains was performed using a nitroblue tetrazolium assay in the presence of hypoxanthine as ...
*  Quorum sensing: A new biofouling control paradigm in a membrane bioreactor for advanced wastewater treatment
Bacteria regulate specific group behaviors such as biofilm formation in response to population density using small signal molecules called autoinducers (quorum sensing, QS). In this study, the concept of bacterial QS was applied to membrane bioreactors (MBRs) for advanced wastewater treatment as a new biofouling control paradigm. The research was conducted in three phases: (1) demonstrate the presence of the autoinducer signal in MBRs, (2) correlate QS activity and membrane biofouling, (3) apply QS-based membrane biofouling control. A bioassay with Agrobacterium tumefaciens reporter strain proved that N-acyl homoserine lactone (AHL) autoinducers were produced in the MBR. Furthermore, thinlayer chromatographic analysis identified at least three different AHLs in the biocake, of which N-octanoyl-homoserine lactone was the most abundant. During continuous MBR operation, the biocakeshowedstrongAHLactivity simultaneously with abrupt increase in ...
*  Membranes | Free Full-Text | Biofouling of Water Treatment Membranes: A Review of the Underlying Causes, Monitoring Techniques...
Biofouling is a critical issue in membrane water and wastewater treatment as it greatly compromises the efficiency of the treatment processes. It is difficult to control, and significant economic resources have been dedicated to the development of effective biofouling monitoring and control strategies. This paper highlights the underlying causes of membrane biofouling and provides a review on recent developments of potential monitoring and control methods in water and wastewater treatment with the aim of identifying the remaining issues and challenges in this area.
*  Biofouling - LGAM Knowledge Base
Biofouling or biological fouling is the accumulation of microorganisms, plants, algae, or animals on wetted surfaces. Such accumulation is referred to as epibiosis when the host surface is another organism and the relationship is not parasitic.. In the local Government context, biofouling may effect the capacity of stormwater pipelines that discharge into the sea.. ...
*  A novel assessment of the traction forces upon settlement of two typical marine fouling invertebrates using PDMS micropost...
Marine biofouling poses a severe threat to maritime and aquaculture industries. To prevent the attachment of marine biofouling organisms on man-made structures, countless cost and effort were spent annually. In particular, most attention has been paid on the development of efficient and environmentally friendly fouling-resistant coatings, as well as larval settlement mechanism of several major biofouling invertebrates. In this study, polydimethylsiloxane (PDMS) micropost arrays were utilized as the settlement substrata and opposite tractions were identified during early settlement of the barnacle Amphibalanus amphitrite and the bryozoan Bugula neritina. The settling A. amphitrite pushed the periphery microposts with an average traction force of 376.2 nN, while settling B. neritina pulled the periphery microposts with an average traction force of 205.9 nN. These micropost ...
*  HKU Scholars Hub: The role of cell-surface interactions in bacterial initial adhesion and consequent biofilm formation on...
Until recently, the realization that membrane biofouling during nanofiltration (NF) and reverse osmosis (RO) processes is an unavoidable occurrence, has led to a paradigm shift in which biofouling management approaches rather than biofouling prevention are now being considered. To implement this new concept, it is crucial to understand the fundamentals of cell-surface interactions during bacterial adhesion, a prerequisite to biofouling of membranes. As such, with membrane biofouling already being widely studied and documented, greater attention should be given to the factors involved in the initial bioadhesion onto membranes during NF/RO processes. This review focuses on the interactions between bacterial cells and NF/RO membranes, emphasizing the mechanisms of bacterial adhesion to NF/RO membranes with particular reference to the effects of micro-environmental conditions experienced at the membrane ...
*  Environmental Issues Update 1.Environmental Issues 1.Ship strikes on whales 2.Noise pollution 3.Biofouling 2.Environmental...
Today's Environmental Agenda... Anti-fouling systems Ballast Water management Biofouling Ship Recycling Port Reception Facilities (adequacy & affordability) Waste management (onboard and ashore) Stern tube lube oil releases Polar shipping Marine Noise pollution Whale strikes Spill Prevention and Response Planning VOC emission reductions Exhaust Gas emissions (Annex VI & its revisions) Green House Gas emissions 1. Environmental issues
*  YEUNGNAM UNIVERSITY: Effects of shear rate on biofouling of reverse osmosis membrane during tertiary wastewater desalination
The effects of shear rate in operation of reverse osmosis (RO) membrane process on biofouling phenomena were studied. RO filtration unit was continuously fed with tertiary effluents at high (445.2 s(-1)) and low (178.1s(-1)) shear rate conditions. In addition, the two dependent parameters, organic loading rate and shear rate were compared. During desalination process of tertiary effluents, two different stages of fouling were observed. As expected, conditioning the RO membrane during the first stage of fouling was dominated by the concentration of the organic compounds in the feed water. While in contrast, the 2nd stage mainly comprised of biofilm formation, was dominated by the organic loading rate to the RO flowcell. Shear rate is shown to affect extracellular polymeric substances (EPS) chemical composition, which corresponded to changes in EPS cohesion and elasticity. Consequently, we show how these EPS physical properties affect permeate flux decline. At higher shear ...
*  biofouling - Wiktionary
2007, Schumacher, James F, et. al., "Engineered antifouling microtopographies - effect of feature size, geometry, and roughness on settlement of zoospores of the green alga Ulva", Biofouling: The Journal of Bioadhesion and Biofilm Research, 23(1):55-62.[1] ...
*  ALVIM Srl, Biofouling monitoring technologies & services
ALVIM Biofouling Monitoring Technologies and Services - Biosensors (biofilm sensors for biofilm monitoring) and services for the optimization of antifouling treatment against bacterial biofilms and macrofouling in industrial plants pipelines, cooling water systems (CWS), process waters - Microbiologically Influenced Corrosion (MIC) prevention
*  Marine biofouling - microbial adhesion to non-solid gel surfaces
The scope for this work was to develop rapid assays for enumerating microorganisms on gels, and to test whether fouling of gel surfaces is principally different from that of solid substrata. For this purpose, a standard set of different gels were selected, based on biocompatibility, polymer charge and gel strength. Bacterial adhesion to gels could be conveniently enumerated by first staining with SYBR Green I nucleic acid gel strain. Images were then collected using a confocal scanning laser microscope, followed by image analysis to determine the percent coverage of bacteria. Diatom adhesion could be qualified using a fluorescence scanner recording the fluorescent chlorophyll, showing a clear correlation between average fluorescence signals and cell density determined by counting. This method was successfully tested on glass, gels, a painted surface and an antifouling coated surface.. Adhesion of the marine bacterium Pseudomonas sp. NCIMB ...
0023] An innovative method has been developed for the prevention and control of biofouling on an object that is immersed or partially immersed in a water environment in which there are one or more organic or inorganic compounds capable of releasing gas, comprising the step of applying to the surface of said object a composition comprising a polymeric resin and one or more enzymes or a paint and/or coating containing one or more enzymes, wherein the one or more enzymes are adapted to catalyze a reaction of said one or more compounds that lead to the formation of gas. The immersed or partially immersed object can be static or non-static, including any kind of floating object moved by an engine or other types of propulsion, such as for example, a sail, pedals, oars. The water environment can be of different nature, for example marine, lake or river environments. This eco-compatible product is based on the use of formulations containing enzymes, which have characteristics that have a low ...
*  Biofouling Minisymposium: Marine Fouling Issues
... on Wyss Institute | Hosted by: Wyss Institute, Harvard John A. Paulson School Engineering and Applied…
*  BiAqua - Biofouling of membrane systems by phosphate limitation
20150210 BiAqua B.V. - Mrs. Sandie Chauveau - "Biofouling of membrane systems by phosphate limitation" The start-up BiAqua developed a novel approach (invented by TUD) of combating bio-fouling by selective phosphate removal from the feed water, which stops the growth of micro-organisms. Phosphate is adsorbed to below 1 μg/l on a bio-degradable adsorbens, containing iron with good affinity to phosphate.. The adsorbens in a normal sand-filter or IX housing is operated as such and can be regenerated multiple times with caustic. Pilot on drinking water and secondary wastewater treatment effluent proved effective and stable, resulting in constant low pressure drop over RO modules that otherwise exhibited severe bio-fouling.. Applications in surface water, horticulture, cooling towers are developed with partners. Outlook for 2015 is demo scale. www.biaqua.nl. ...
*  Biofilms, Bioadhesion, Corrosion, and Biofouling: Edited By: Milton Fingerman, Rachakonda Nagabhushanam and Mary-Frances...
Buy Biofilms, Bioadhesion, Corrosion, and Biofouling (9781578080137): NHBS - Edited By: Milton Fingerman, Rachakonda Nagabhushanam and Mary-Frances Thompson, Science Publishers
*  Definition for biofouling
biofouling definition: The disability or degradation of one thing, particularly a ship's hull or technical equipment, as a result of the development or task of living organisms.; The accumulation of residing…
*  Selenium, Ltd. Awarded $500,000 SBIR Grant for Biofouling Prevention ... (Austin Texas (PRWEB) April 02 2013 Th...)
Austin Texas (PRWEB) April 02 2013 The National Science Foundation (NSF) has issued a Phase II Small Business Innovation Research (SBIR) grant to biopharmaceutical company Selenium Ltd. to advance the company's effort to develop a market ready antimicrobial spacer to be used in reverse osmosis (RO) membrane modules in water filtration systems. Selenium's or,Selenium,,Ltd.,Awarded,$500,000,SBIR,Grant,for,Biofouling,Prevention,Technology,biological,advanced biology technology,biology laboratory technology,biology device technology,latest biology technology
*  Industrial Biofouling - Business machines and appliances
Industrial Biofouling discusses the challenges and to a lesser extent, the benefits of biofilms on industrial processing surfaces.
*  Industrial Biofouling - Polyethylene
Industrial Biofouling discusses the challenges and to a lesser extent, the benefits of biofilms on industrial processing surfaces.
*  Industrial Biofouling - Rheological
Industrial Biofouling discusses the challenges and to a lesser extent, the benefits of biofilms on industrial processing surfaces.
*  Case study - Biofouling in cooling basin on Environmental XPRT
Article Case study - Biofouling in cooling basin. Al Futtaim Cooling district plant incorporated the LG Sonic technology into their chemical treatment program to reduce the biocide consumption in the cooling towers and improve the water quality.The C...
*  Biofouling & Biomonitoring: Mussels help keep Mussels at Bay on Environmental XPRT
Article Biofouling & Biomonitoring: Mussels help keep Mussels at Bay. Untitled Document Dykes, shipwrecks, junk and just about anything else submerged in water is soon colonized by aquatic animals, particularly mussels. Unless something is don...
*  Citation Machine: Biofouling format citation generator for congressional publication
Citation Machine™ helps students and professionals properly credit the information that they use. Cite your congressional publication in Biofouling format for free.
*  Citation Machine: Biofouling format citation generator for map / chart
Citation Machine™ helps students and professionals properly credit the information that they use. Cite your map / chart in Biofouling format for free.
*  0 English Anagrams of BIOFOULING :: WordMine.info -- International Dictionary Search Engine
A List with 0 English Anagrams of BIOFOULING -- -- WordMine.info is a search engine for finding words. The searches can be done in a lots of different languages. Search Type: Crossword Solver, Words that starts with, Words Ending in, Words with, Palindrome Words Matching, Anagrams of, Words From Letters, Words In the Word, Words Matching Pattern,