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2 edition of Algal concentration by ultrafiltration found in the catalog.

Algal concentration by ultrafiltration

Columbia University. Dept. of Chemical Engineering and Applied Chemistry

Algal concentration by ultrafiltration

by Columbia University. Dept. of Chemical Engineering and Applied Chemistry

  • 189 Want to read
  • 16 Currently reading

Published by Dept. of Energy, [Division of] Solar Energy, for sale by the National Technical Information Service in [Washington], Springfield, Va .
Written in English

    Subjects:
  • Ultrafiltration,
  • Algae -- Growth

  • Edition Notes

    SeriesCOO ; 4076-3
    ContributionsGregor, Harry P, Cardenas, R, United States. Dept. of Energy, Polytechnic Institute of New York, Columbia University
    The Physical Object
    Paginationv. :
    ID Numbers
    Open LibraryOL14877975M

      The results showed contents of 25–30 mg/g of CPC for this algae. Ammonium sulfate concentration above mol/L ensured only CPC precipitation with purity of In case of ultrafiltration, more than 50% was lost at kDa tangential flow Cited by: UF (ultrafiltration) technology has been in progress as an alternative to conventional drinking water treatment of raw water which usually contains algae both in domestic and abroad. But fast decrease of membrane flux and ineffective backwashing are major limitations for application of UF on algae-rich water. Pretreatment by permanganate/PAC (powdered activated carbon)/coagulant and a better.

      A water filtration technique that normally cleans up agricultural chemicals is also effective at removing a toxin secreted by algae found in lakes and . In this paper, we investigated the membrane fouling mechanism according to the coagulant dosage in algal rich water using a ceramic membrane. The algae that were used in this experiment were Microcystis sp. of cyanobacteria, and the fouling mechanism was analyzed through irrigation and filtration resistance through a constant flow operation. The experimental results showed that the filtration Cited by: 2.

    The difference will show the algal mass and solution concentration (w/v). j) Plot absorbance (nm) vs. concentration (g/L) for future use during filtration. Also, plot concentration vs. time. Stage II will require growing several batches of algae with these same conditions. Current Environmental Management is a peer-reviewed journal that focuses on all areas of environmental sustainability, disaster risk reduction and management, decision and policy making. It covers the applications of environmental management approaches on waste water management and control, water, air and soil pollution, human habitation, water disposal, recycling, radiation protection.


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Algal concentration by ultrafiltration by Columbia University. Dept. of Chemical Engineering and Applied Chemistry Download PDF EPUB FB2

Algal concentration by ultrafiltration. [Washington]: Dept. of Energy [Division of] Solar Energy ; Springfield, Va.: For sale by the National Technical Information Service, (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors: Harry P Gregor; Columbia.

Abstract A number of algal cultures of the fine, non-settling type were concentrated by non-fouling ultrafiltration membranes to the 1 to 3% concentration level at high fluxes and without evidence of membrane fouling. The algae studied include the following: Anabaena, Chlorella, Chlorococcus, Gleotrichia, Microcystis, Phormidium, and Selenastrum.

The non-back washable fouling of the ultrafiltration membranes varied strongly with the type of algal species and coincided with MFI-UFkDa and TEP concentration.

Rh demonstrated the highest and Ph the lowest non-back washable fouling (at a level of mg-biopolymer-C/L in the feed water. Ultrafiltration of Seawater Impacted by Algal Organic Matter. Water Desalination and Reuse Center.

King Abdullah University of Science & Technology (KAUST) Muhammad Tariq Khan *, Algal concentration by ultrafiltration book Philippe Croue*, Veronica G.

Molina** and Nasir Moosa** *King Abdullah University of Science and Technology - Thuwal - Saudi Arabia. A significant amount of investigation on algal fouling of microfiltration (MF) and ultrafiltration (UF) membranes has been conducted in recent years.

In this paper, recent knowledge of both MF and UF membrane fouling by microalgal suspensions, including the mechanisms and factors influencing algal fouling control strategies, is by:   The filtration rates of Mytilus edilis (=galloprovincialis; 40 mm) were determined in relation to food concentration and temperature, using pure suspensions of the unicellular alga Platymonas suecica in concentrations ranging from 3x cells/l to x cells/l.

The rate of filtration (ml/h/mussel) generally decreased as cell concentrations increased, and dropped to low values when Cited by: 1. Concentration. Ultrafiltration is a very convenient method for the concentration of dilute protein or DNA/RNA samples.

It is gentle (does not shear DNA as large as Kb or cause loss of enzymatic activity in proteins) and is very efficient (usually over 90% recovery). Desalting and Buffer Exchange (Diafiltration). Ultrafiltration. Effects of shear on microfiltration and ultrafiltration fouling by marine bloom-forming algae Article (PDF Available) in Journal of Membrane Science () July with Reads.

For instance, if 20 L of feedstock are processed by ultrafiltration until18 L have passed through to the filtrate and 2 L are left in the retentate, a ten-fold concentration has been performed so the Volume Concentration Factor is In a Fed-Batch concentration process, where theFile Size: 2MB.

Laminar boundary-layer theory was used to quantify concentration polarization in ultrafiltration systems in which the membrane forms the base of a stirred, cylindrical container. Fig. 4 shows the profiles of halogenated by-product generation during the treatment of virgin membrane, algal cell-fouled membrane, and algae-containing water by NaClO at a concentration of mg/L (as Cl 2).

The contact of a virgin membrane alone with NaClO could form HAAs, CH, DCAN and 1,1,1-trichloropropanone (TCP), while the concentrations of other products were under the detection : Jiaqi Ding, Songlin Wang, Pengchao Xie, Pengchao Xie, Yujia Zou, Ying Wan, Yongsheng Chen, Mark R. One problem with microporous membranes pretreatment is fouling by marine algae, which is most prevalent during algal blooms.

Algal cells quickly block MF and UF pores and decrease permeability. HIGH PERFORMANCE OF POLYSULFONE ULTRAFILTRATION MEMBRANE: EFFECT OF POLYMER CONCENTRATION Sofiah Hamzah1, Nora’aini Ali1, Marinah Mohd Ariffin2, Asmadi Ali1 and Abdul Wahab Mohammad3 1Department of Engineering Science, Faculty of Science and Technology, Universiti Malaysia Terengganu, Kuala Terengganu.

In most instances, the highest flux (J) obtainable with membranes occurs when clean DI water is the feed solution. As solutes are added, it is expected that flux decline will occur; in the case of ultrafiltration, the operating flux could be as low as 5% of the pure water flux [1].

This is due to membrane resistances, which are applied in series for a theoretical flux (Equation 1). Harvesting algal biomass for biofuels using ultrafiltration membranes Article in Bioresource Technology (14) March with Reads How we measure 'reads'. UF is an appropriate technology to treat the algae-rich water as it can completely retain the algal cells without the lysis of algal cells (Liang et al., ).

However, the accumulation of compressible algal cells and extracellular organic matters (EOM) could lead to serious membrane fouling (Ladner et al.,Babel and Takizawa, Cited by: Ultrafiltration experiments were performed with outside/in hollow fiber membrane and algal solutions at constant colloidal Algal Organic Matter (c-AOM) content prepared from the dilution of cultures harvested over their exponential and decline growth by: 9.

The batch algal concentration experiment employed a lab scale hollow fiber polyvinylchloride (PVC) ultrafiltration (UF) membrane module (LU8A-4A) provided by Litree Co. (Hainan, China). The PVC membrane is low cost, with robust mechanical strength, high permeability, and excellent chemical properties (e.g., acid, alkali and chlorine resistance) (Zhang et al., ).Cited by: To maintain stable operation in SWRO plants during algal bloom periods, pre-treatment using ultrafiltration (UF) membranes has been proposed.

This thesis addresses the effect of algal blooms. Many methods are available for the concentration of proteins; however, most are not easily scalable due to costs, the need of specialized instruments and skilled workers or are very time-consuming. Three-phase partitioning (TPP) is a separation technique that has gained a lot of interest due to its rapid, simple and scalable use for concentration, isolation and decontamination of proteins from Cited by:.

Of the estima species of algae known, scientists have grown about a dozen using waste streams (see Table 1) [1]. For this project, Chlorella vulgaris, of the phylum Chlorophyta, was selected due to the amount of previous research done on its optimal.

We collec L lake water samples at the same locations and times as the samples for algal taxonomy and toxin analyses and concentrated the samples for molecular analysis.

Each sample was concentrated using an ultrafiltration procedure based on Hill et al. Ultrafiltration concentrates (~ mL each) were shipped overnight in chilled Cited by: Membrane filtration (microfiltration and ultrafiltration) has become an accepted process for drinking water treatment, but membrane fouling remains a significant problem.

The objective of this study was to systematically investigate the mechanisms and components in natural waters that contribute to fouling.

Natural waters from five sources were filtered in a benchtop filtration by: