Untitled

Morineau-Thomas, Odile; Legentilhomme, P.; Jaouen, Pascal; Lépine, Bertrand; Rincé, Yves

doi:10.1023/a:1011981719732

Cited by 13 publications

(4 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These measurements are consistent with an internal and an external organic fouling, which can be linked to the high adsorption potential of macromolecules (i.e. EPS suspected before) as already underlined by previous studies [9][10][11][12]80]. These results indicate that the more significant irreversible fouling is, the faster reversible cake establishment will be and consequently a drastic drop of flux will be observed during the P. lima microfiltration.…”

Section: Scanning Electron Microscopy Experimentssupporting

confidence: 89%

“…Many studies relate to the separation of the micro-algae with various membrane processes [8][9][10][11][12][13][14][15][16] but more especially, a previous study [17] investigated immersed membranes for seawater pre-treatment dedicated to total removal of undesirable micro-algae. In our previous study [17], polysulfone immersed hollow fibers microfiltration (MF) and ultrafiltration (UF) membranes were compared.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Immersed hollow fibres microfiltration (MF) for removing undesirable micro-algae and protecting semi-closed aquaculture basins

et al. 2011

Self Cite

View full text Add to dashboard Cite

In this study, an original use of immersed microfiltration membranes (mean pore size equal to 0.2 μm) is investigated for the total removal of toxic dinoflagellates from seawater. Using a membrane autopsy and fouling model approach and the use of fouling indexes (called Pore Blocking Index, Pore Constriction Index and Cake Filtration Index), three dinoflagellate suspensions (Heterocapsa triquetra, Alexandrium minutum and Prorocentrum lima) have been microfiltered in order to study the influence of micro-algal species and its concentrations (1,000 and 30,000 cells/mL) on filtration yield and membrane fouling mechanisms. Results showed that all micro-algae have been retained after 180 min of microfiltration. At 30,000 cells/mL, permeate fluxes declined rapidly and an internal fouling occurred at the beginning of microfiltrations followed by a cake deposition. At 1,000 cells/mL, flux declined slowly and was mainly due to an internal fouling. For a given micro-algae concentration, the filtration behaviour and fouling behaviour can be very different based on the micro-algae species. The dissolved organic substances and particulate size distribution are important factors affecting internal but also external fouling. SEM analyses and fouling indexes are useful tools, simple to implement, and allow the study of membrane fouling and membrane process optimization. Research highlights : ► Removal of toxic dinoflagellates from seawater using a low energy consumption membrane process. ► Microfiltration for safe shellfish storage during toxic micro-algae bloom. ► Retention of 99% of micro-algae by immersed microfiltration membrane. ► Understanding of membrane fouling mechanisms to process optimization.

show abstract

Section: Scanning Electron Microscopy Experimentssupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Immersed hollow fibres microfiltration (MF) for removing undesirable micro-algae and protecting semi-closed aquaculture basins

et al. 2011

Self Cite

View full text Add to dashboard Cite

show abstract

“…Most advanced technologies are based on the use of membranes (tubular, capillary, or hollow-fiber membranes) and are becoming increasingly popular [37]. The size of the pore decreases in the order from tubular (5-15 mm) to capillary (1 mm) to hollowfiber (0.1 mm) and the risk of plugging increases with the decrease in pore diameter.…”

Section: Technologies For Harvesting Microalgaementioning

confidence: 99%

Energy from Aquatic Biomass

Aresta

Dibenedetto

2010

Handbook of Combustion

View full text Add to dashboard Cite

The world demand for energy is increasing at a rate never experienced before: up to 2030 an expansion of 50% is foreseen [1]. In 2008, the high price of oil (up to US$150 per barrel) during the first semester and the economic crisis in the second semester caused a slowdown of demand. Nevertheless, the robust economic growth of emerging countries such as China and India will drive the process of energy use: in fact OECD countries are foreseen as growing at a rate of 0.7% per annum compared to 2.5% of non-OECD countries [1]. Consequently, while China and India represented 8% of the world energy consumption in 1980, they reached the 18% target in 2005. In 2009, China has equaled the USA energy consumption, for the first time, and will remain the largest consumer in the world level for next few decades.Fossil carbon-based fuels provide 80-85% of the energy used today and will continue at this level at least until 2030. However, the accumulation of CO 2 into the atmosphere is causing serious worries over its potential effect on climate change. Although uncertainty about the direct responsibility of atmospheric CO 2 for possibly catastrophic events remains high, nevertheless the parallel trend of the curves representing the growth of the world population, energy consumption, CO 2 emission, and planet temperature increase is driving the need to take measures for controlling CO 2 production and immission into the atmosphere.A general consideration is that energy is used at different intensities in various sectors. Thus, while industry requires high intensity energy, transportation and domestic use demand less intensive sources. Energy intensity, in a sense, makes the selection of energy sources for different uses. Therefore, while nuclear energy is the ideal source for the production of electric energy for feeding industries and other high intensity users (electrified transport), liquid fuels (gasoline, diesel, ethanol) and gas (LNG and similar) are most suited for transportation (personal and collective mobility on roads, essentially, and other conventional uses). On this view, it looks like the need to use carbon-based fuels will remain almost unchanged for at least 20-30 years. However, the use of gaseous and liquid fuels in the transport sector appears to

show abstract

“…Annular ducts are widely used in industry to design cooling jackets and double-tube heat exchangers (coolers and condensers) where turbulently flowing fresh or saline water serves as a cooling agent [1,2], ultrafilters and dialyzers [3,4], or liquidsolid catalytic and electrochemical reactors for diffusion-controlled reactions [5,6]. In the case of electro-organic synthesis, electrochemical reactors using annular ducts are distinguished by a uniform distribution of the current and thus a high grade of selectivity [6].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of the Rates of Liquid‐Solid Heat and Mass Transfer in Annular Ducts by Using Circular Fins

et al. 2021

View full text Add to dashboard Cite

Rates of solid-liquid mass and heat transfer (by analogy) were measured at the outer surface of the inner tube of an annular duct under developing flow conditions using the electrochemical method that elaborates the measurement of the limiting current of the reduction of K 3 Fe(CN) 6 at the tested model surface. Variables examined were physical features of the solution (density r, viscosity m, and diffusivity D), solution superficial velocity, tube active length, and tube diameter. The experimental results were correlated by a dimensionless equation involving all affecting parameters. Due to the presence of the circular fins at the tube surface, the degree of mass transfer was enhanced by a factor ranging from two to six subject to the operative settings. Applications of the current findings in the design of catalytic reactors, membrane dialyzers, and double-pipe heat exchangers were discussed.

show abstract

Untitled

Cited by 13 publications

References 15 publications

Immersed hollow fibres microfiltration (MF) for removing undesirable micro-algae and protecting semi-closed aquaculture basins

Immersed hollow fibres microfiltration (MF) for removing undesirable micro-algae and protecting semi-closed aquaculture basins

Energy from Aquatic Biomass

Enhancement of the Rates of Liquid‐Solid Heat and Mass Transfer in Annular Ducts by Using Circular Fins

Contact Info

Product

Resources

About