Concentration polarization in spacer filled reverse osmosis membrane systems

... understanding of the role of certain parameters in concentration polarization 2.3 Numerical models for concentration polarization in RO membrane systems Concentration polarization in RO membranes ... identifying and assessing the major mechanisms of concentration polarization in spacer filled RO channels; investigating the effects of filament geometry on conce...

Ngày tải lên: 15/09/2015, 22:25

... development in a long membrane channel In this research work, a long membrane channel is defined as the membrane channel that is made up of several membrane elements connected in series in a single ... conventional separation processes in water reclamation and wastewater treatment Fouling alleviation and control is seriously hindered by ineffective f...

Ngày tải lên: 15/09/2015, 17:10

... membranes are composite membranes made by interfacial polymerization; aromatic polypiperazine is an example of a widely-used nanofiltration membrane There are many commercially available RO membranes, ... Presented at Fourth National Meeting of the North American Membrane Society, May 29-31, 1991, San Diego, California Bhattacharyya, D., and Kothari, A. , "Separation of Hazardous...

Ngày tải lên: 24/03/2014, 05:20

... Concentration Polarization in a Long RO Membrane Channel 100  6.1 Calculation of concentration polarization 101  6.2 Variation of permeate flux along the channel 104  6.3 Variation of rejection along ... and concentration polarization The effect of spacers on minimizing concentration polarization formation was also investigated Chapter – Organic fouling development in a lo...

Ngày tải lên: 14/09/2015, 08:25

... HYBRID PHOTOCATALYSIS AND MICROFILTRATION PRETREATMENT FOR ORGANIC FOULING CONTROL OF REVERSE OSMOSIS MEMBRANE LIU HONGYU (M Eng., Beijing Univ of Civil Eng & Arch.) A THESIS SUBMITTED FOR ... method for effective alleviation and control of organic fouling in RO process The primary objective of this study was to develop a novel pretreatment method...

Ngày tải lên: 14/09/2015, 08:40

... polymerisation in RO desalination systems ii Declaration ‘I, Lyudmila (Lucy) Lunevich, declare that the PhD thesis entitled Silica fouling in coal seam gas water in reverse osmosis desalination is ... on RO desalination of coal seam gas water and brine concentrate, Victoria University, Melbourne viii May 2014 Melbourne, talk on Water and brine management...

Ngày tải lên: 28/11/2015, 14:02

... temperatures in the middle of the borehole, while constant temperature results in a more even spread of the heat in the borehole Using constant heat flux at the pipe wall (cq"pw) thus results in higher thermal ... the bedrock and steady-state inside the borehole using the borehole thermal resistance to describe the heat transfer through th...

Ngày tải lên: 05/09/2013, 14:58

... Money with Reverse Osmosis Reverse osmosis systems offer an economical solution for producing high purity water and lowering productions costs When used to treat boiler feedwater, reverse osmosis ... reverse osmosis in the industrial world and the ways in which this innovative water filtration technology can save businesses money ***** Chapter 1: Reverse Osmosis...

Ngày tải lên: 08/03/2014, 15:20

... dependence of H+-ATPase hydrolytic activity from U maydis plasma membrane vesicles Models of inhibition Hanes Plot of data obtained from wildtype samples Concentration of MgATP in mM; ATPase hydrolytic ... used in this study [18,21] This regulation by CLB -unsaturated fatty acids in U maydis differs from others described For example, glucose-induced activ...

Ngày tải lên: 08/03/2014, 22:20

... Meanwhile, Cu concentrations were not affected by different tillage systems and Fe Fig Concentration and distribution in depth of zinc in zero -tillage ŽZT., conventional tillage ŽCT and pasture ŽPast Different ... hypothesize that concentrations of trace elements will increase and stratify in those soils However, as a consequence of the recent introduct...

Ngày tải lên: 15/03/2014, 23:22

... for the enzyme [21] These facts strongly suggest the involvement of the enzyme, GGR, in the biosynthesis of membrane lipids in the hyperthermophilic archaeon A fulgidus, as predicted in the previous ... group of GGGP and GGPP These facts strongly suggest the involvement of the enzyme, A fulgidus GGR, in the biosynthesis of membrane lipids...

Ngày tải lên: 30/03/2014, 09:20

... evaluate the contribution of the coupled modes to the thermal conductivity reduction, we obtain the lattice thermal conductivity from the total thermal conductivity using Wiedemann-Franz relation (Lorenz ... a considerable contribution to the reduction of the lattice thermal conductivity and that multiple- element filling can effectively suppress pho...

Ngày tải lên: 06/05/2014, 08:53

... Resonant Oscillations in Multiple- Filled Skutterudites 1979 phonons.3,4 Since the concept of rattling is still open to question, this explanation needs further investigation In this work, ... zero, which indicates that the carriers are n-type in these samples Second, the oscillations are much weaker in this work This is Ba -filled Yb -filled Normalized intensity La -fill...

Ngày tải lên: 06/05/2014, 08:54

... Resonant Oscillations in Multiple- Filled Skutterudites 1979 phonons.3,4 Since the concept of rattling is still open to question, this explanation needs further investigation In this work, ... zero, which indicates that the carriers are n-type in these samples Second, the oscillations are much weaker in this work This is Ba -filled Yb -filled Normalized intensity La -fill...

Ngày tải lên: 06/05/2014, 08:58