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Showing 1 to 20 of 381 for “"fouling"”.
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Organic fouling of desalination membranes
… water source, but it is susceptible to membrane fouling, which can reduce product water quality and raise energy consumption. Fouling can be reduced through (energy-intensive) pretreatment, delayed by membrane coatings, and partially reversed by cleaning. However, poor understanding of fouling …
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Biomimetic approach to anti-fouling surfaces
… is a very popular approach in the control of biofouling but only a few attempts have been made to use it for the purpose of scale inhibition. It is fair to say that there is a potential for more widespread study and exploitation of such systems. Biomimetics in surface engineering is receiving …
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Membrane Fouling Mitigation with Water Hammer
… its widespread application has been limited by fouling. Fouling results in a decline in membrane performance and requires regular chemical cleaning to sustain the operation. This thesis focuses on the development of a new approach to mitigate fouling by subjecting a membrane to water hammer. The …
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Performance and Fouling during Bioreactor Harvesting
… step, the process is easy to scale up, and fouling of the filter is limited by the cross flow. However, membrane fouling has limited its widespread use. This is particularly problematic given the high cell densities encountered today. Here a reverse asymmetric commercial membrane, …
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Anti-fouling interfaces for energy applications
Fouling and accretion have negative impacts on a plethora of industrial processes. This doctoral thesis focuses on the theoretical and experimental exploration of mitigation strategies for heterogeneous nucleation of foulants. The dissertation covers low-temperature precipitation fouling, corrosion …
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Colloidal fouling of reverse osmosis membranes
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1985.
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Organic fouling in membrane capacitive deionization systems
… most low-salinity water treatment technologies, fouling is a central issue, but few studies examine the its impact on MCDI. Fouling was evaluated using synthetic saline solutions with a combination of NaCl and CaCl2 and the model organic foulant sodium alginate, known to complex with calcium, in …
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A study of marine fouling in Monterey harbor
Observations were made on the marine fouling occuring on test panels In Monterey Harbor during the period January 26 to AprlI 21, 1966. Test panels of various materials were placed at three depths. Observations were made on plywood panels exposed for four weeks, immersed at two week intervals, at …
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Semi-supervised detection of industrial fouling using ultrasound
Fouling is a large scale problem in industrial equipment such as heat exchangers or pipes, used in factories, ships, airplanes, etc. Traditionally, such equipment is cleaned using sandblasting, chemicals or mechanical methods, all of which require halting the process, which is costly. Recently, …
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Towards understanding fouling mechanisms in continuous crystallisation processes
Fouling involves the unwanted deposition and build-up of solid material on surfaces within a process. This problem is widely encountered in multiphase and solid phase processing in many industries including oil and gas, pharmaceutical and fine chemical manufacturing sectors.;Although it is …
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Hydrodynamic Techniques for Fouling Control in Membrane Systems
L'abstract è presente nell'allegato / the abstract is in the attachment
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Effects of hydrocarbon fouling on reverse osmosis membranes
Organic fouling in reverse osmosis (RO) has been studied using model hydrocarbons such as hexane and diesel. A large number of countries that use reverse osmosis to obtain drinking water also are producers and exporters of hydrocarbons. This makes seawater RO units particularly susceptible to …
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Studies of polymers in fouling release coating science
<p>In chapter one, we describe our studies of the solubility properties of two biocides in F127 aqueous solutions. One is zinc omadine and the other is C9211. The partition coefficients of these two biocides were also determined from the analytical results.</p> <p>In chapter two, we conducted phase …
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Aspects of marine fouling in western Cape waters
… investigations into aspects of marine fouling were conducted in Simonsbay and Table Bay during 1979 to 1981. The development of macrofouling communities on six test materials was examined at 10m and 20m depths in Simonsbay for periods ranging from one month to one year. Community …
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Mitigating fouling of heat exchangers with fluoropolymer coatings
Fouling is a chronic problem in many heat transfer systems and results in the need for frequent heat exchanger (HEX) cleaning. In the dairy industry, the associated operating cost and environmental impact are substantial. Antifouling coatings are one mitigation option. In this work, the fouling …
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Thermodynamic design and fouling of membrane distillation systems
… using solar and waste heat resources, due to its fouling resistance, scalability, and acceptable efficiency. Recent studies indicate that MD could attain the efficiencies of state-of-the-art mature thermal desalination technologies, although additional engineering and scientific challenges must …
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Dynamics of fouling of microporous membranes by proteins
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemical Engineering, 1990
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A study on organic fouling of reverse osmosis membrane
… to study the polysaccharide and protein fouling behavior in two lab-scale reverse osmosis (RO) membrane cells in different dimensions. The first test cell was 0.1 m in length and was treated as a homogenous system while the second one was a 1-m long cell which was designed to measure five …
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