membrane separation Articles
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Pervaporative removal of acrylonitrile from aqueous streams through polydimethylsiloxane membrane
This study describes the successful separation of acrylonitrile (ACN) from dilute aqueous streams using pervaporation process. The influences of ACN feed concentration, permeate pressure, operating temperature, feed flow rate and membrane thickness on the membrane separation performance were investigated. The results showed that with an increase in ACN concentration in the feed solution, the ...
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Forward into the Leading Enterprises of the World-Class Ceramic Membrane Industry
As the main pioneer of ceramic membrane industry in China, Jiuwu specializes in research, development and application of membrane separation technology with ceramic membrane as the core. It is also one of the few domestic enterprises with international competitiveness in research, development, manufacture and application of ceramic membrane materials. Membrane separation technology has been ...
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Membranes and theoretical modelling of liquid–gas membrane separation for aromatic compounds removal from water: a review
Liquid–gas membrane separation techniques - namely, vacuum membrane distillation, membrane air–stripping/sweeping and pervaporation - are non–equilibrium membrane separation processes emerging for the removal of aromatic compounds from industrial wastewater and polluted ground waters. This review focuses on polymeric hydrophobic membranes which are commonly employed in the liquid–gas membrane ...
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The cost of a small membrane bioreactor
The individual cost contributions to the mechanical components of a small membrane bioreactor (MBR) (100–2,500 m3/d flow capacity) are itemised and collated to generate overall capital and operating costs (CAPEX and OPEX) as a function of size. The outcomes are compared to those from previously published detailed cost studies provided for both very small containerised plants (<40 m3/day ...
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Brine Filtration
Edible Liquid Salt PurificationWithout adding flocculant, resistant to pollution, high filtration accuracy, stable &high quality refined brine. Nanofiltration Systems Sulfate RemovalThe membrane has charged groups that selectively reject multivalent anions such as sulfate ion. Primary Brine PurificationCeramic Brine Membrane Purification Solution (hereinafter called CBS Process). JIANGSU ...
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Select the most suitable nitrogen separation method for your industrial nitrogen project
The selection of nitrogen separation method is the key of the whole nitrogen production project. It is not only related to the construction cost of the nitrogen production project, but also related to the long-term operation cost of the whole nitrogen production project. Therefore, it is particularly important to select the appropriate nitrogen separation method. Cryogenic Nitrogen Separation ...
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Quantification of transient flux decline during membrane separation of tanning effluent from tannery
Cake filtration model is described to establish/quantify transient flux decline mechanism for membrane separation of tanning effluent collected from tannery. Two membrane operations, Nanofiltration (NF) followed by Reverse Osmosis (RO), are adopted to treat tanning effluent. The experiments are conducted in a continuous cross-flow mode of operation. Three-flow regimes, namely, laminar, laminar ...
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Size fractionation characterisation of removed organics in reverse osmosis concentrates by ferric chloride
Reverse osmosis membrane separation is the leading method for manufacturing potable purified water. It also produces a concentrate stream, namely reverse osmosis concentrates (ROC), with 10–20% of the water, and almost all other compounds. One method for further treating this stream is by coagulation with ferric chloride. This study evaluates removed organics in ROC treated with ferric chloride. ...
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Meet Roman A. Membrane
I was born in 1964 in San Diego, CA to a researcher at UCLA who worked on a project called reverse osmosis and an engineer who worked with nuclear reactors. In the early 1970’s I found my true calling in a process called separation. Some thought that I invented it so they called it Membrane Separation. I studied electronics and was named the top process in my class electronics is where I ...
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Singapore Industrial Wastewater Treatment Project
Capacity: 150m³/day Process:DTRO Jiarong highly effective DTRO system is specially designed for the treatment of highly contaminated wastewater, such as leachate or pharmaceutical wastewater. This system functions independently and automatically. We have installed more than 300 such systems worldwide with a remarkable reputation for quality and service. Features: Using industrial ...
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Sustainability assessment of tertiary wastewater treatment technologies: a multi-criteria analysis
The multi-criteria analysis gives the opportunity to researchers, designers and decision-makers to examine decision options in a multi-dimensional fashion. On this basis, four tertiary wastewater treatment (WWT) technologies were assessed regarding their sustainability performance in producing recycled wastewater, considering a ‘triple bottom line’ approach (i.e. economic, environmental, and ...
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Membrane treatment of liquid wastes from radiological decontamination operations
The paper focuses on the evaluation of membrane filtration for the treatment of liquid radioactive streams generated in area decontamination operations. In this work, semi-permeable membranes were demonstrated to be effective reducing the volume of wastewater containing cesium and cobalt by two orders of a magnitude. The efficiency of membrane separation was enhanced by employing additives that ...
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Evaluation and characterisation of TFC-PA Nanofiltration membrane for the rejection of cadmium from aqueous solutions
Performance of a thin-film composite polyamide nanofiltration membrane has been studied to separate cadmium ions from aqueous solutions. The operating variables studied are pressure, concentration and feed flowrate. It is observed that the solute rejection increases with increase in applied pressure and decreases with increase in feed concentration at constant feed flowrate. The maximum observed ...
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MF Membrane Technology
Microfiltration (commonly abbreviated to MF) is a type of physical filtration process where a contaminated fluid is passed through a special pore-sized membrane to separate microorganisms and suspended particles from process liquid. MF membrane is commonly used in conjunction with various other separation processes such as ultrafiltration and reverse osmosis to provide a product stream which is ...
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Evaluation of the low pressure RO and NF membranes for an alternative tyreatment of Buyukcekmece Lake
The recent development of new generation LPRO and LPNF membranes has received attention for application in the field of wastewater and water treatment through an increasingly stringent regulation for drinking water purposes and water reclamation. This paper presents the pilot scale membrane separation studies on Buyukcekmece Lake in Istanbul with low pressure reverse osmosis (LPRO) and low ...
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Dehydration of water/pyridine mixtures by pervaporation using cellulose acetate/ polyacrylonitrile blend membrane
Cellulose acetate/ polyacrylonitrile (CA/PAN) membranes were prepared and used to separate pyridine / water mixtures by pervaporation. The membranes were characterized through SEM. The effects of feed concentration, operation temperature and downstream pressure on the separation performance were evaluated. Experimental results indicated the increase of operation temperature could raise the ...
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Fulvic acid degradation using nanoparticle TiO2 in a submerged membrane photocatalysis reactor
The degradation of fulvic acid (FA) by nanoparticle TiO2 in a submerged membrane photocatalysis (SMPC) reactor was studied. In this reactor, photocatalytic oxidation and membrane separation co-occured. The continuous air supplier provided O2 for the photocatalytical reaction and mixed the solution through an airflow controller. The particle TiO2 could automatically settle due to gravity without ...
By IOS Press
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The Design of the Ceramic Membrane
1. Structure Ceramic membrane is one of the inorganic membranes, which belongs to the solid membrane material in membrane separation technology. It is mainly made of inorganic ceramic materials of different specifications, such as aluminium oxide, zirconia, titanium oxide and so on, which are used as supporting materials and are coated on the surface for many times and fired at high temperature. ...
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Can I Purify Hydrogen from my HHO with a Metal Hydride?
We occasionally get questions from people wanting to know if they can use a Metal Hydride (MH) to purify the Hydrogen from an HHO generator, so I thought I would post our response here: No Why? Putting HHO into a metal hydride container should not be done. Aside from the fact that it would be extremely unsafe to put HHO gas in a chamber with a cataylst (e.g. MH) since it will cause it to ...
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Arsenate removal using a combination treatment of precipitation and nanofiltration
A combination treatment of Ca-precipitation and nanofiltration membrane was studied to remove arsenate from water. The selected nanofiltration membrane was an amphoteric charged membrane, proved by the results of ATR-FTIR spectra and zeta potential. The arsenate and calcium removal efficiencies had the lowest values at the isoelectric point of the nanofiltration membrane, attributed to the ...
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