Microfiltration

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Microfiltration is a filtration process which removes contaminants from a fluid (liquid & gas) by passage through a microporous membrane. A typical microfiltration membrane pore size range is 0.1 to 10 micrometres (µm). Microfiltration is fundamentally different from reverse osmosis and nanofiltration because those systems use pressure as a means of forcing water to go from low pressure to high pressure. Microfiltration can use a pressurized system but it does not need to include pressure. (Wikipedia.org)






Conferences related to Microfiltration

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2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)

The conference program will consist of plenary lectures, symposia, workshops and invitedsessions of the latest significant findings and developments in all the major fields of biomedical engineering.Submitted papers will be peer reviewed. Accepted high quality papers will be presented in oral and postersessions, will appear in the Conference Proceedings and will be indexed in PubMed/MEDLINE


2020 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)

One of the flagship conferences for the IEEE Robotics and Automation Society (RAS)


2020 IEEE/SICE International Symposium on System Integration (SII)

IEEE/SICE SII is the premier symposium series presenting the state of the art and future perspectives of System integration, where industry experts, researchers, and academics share ideas and experiences surrounding frontier technologies, breakthrough and innovative solutions and applications.2020 IEEE/SICE International Symposium on System Integrations (SII 2020) will be as the 12th symposium on system integration. System integration is one of the key technologies and the integration of hardware and software is especially important to solve the industrial or social system problems in new century. This symposium focuses to the new research and industrial application of system integration, and discusses the approach method to improve effectiveness of system integration.

  • 2019 IEEE/SICE International Symposium on System Integration (SII)

    IEEE/SICE SII is the premier symposium series presenting the state of the art and future perspectives of System integration, where industry experts, researchers, and academics share ideas and experiences surrounding frontier technologies, breakthrough and innovative solutions and applications.

  • 2017 IEEE/SICE International Symposium on System Integration (SII)

    System Integration,Control technology, Robotics technology, Network system control, Plant engineering, System hardware, System software, Integration platform, Artifacts, Mechatronics systems, Automation systems, Virtual reality systems, Entertainment systems, Micro-nano systems,Human and Society, Welfare/Environment / Ecological systems, Bio systems, Rescue/Security/Enterprise resource planning systems, Supply chain management/Intelligent transportation/Logistics systems, Human, Aging society, Health engineering, Assistive Technologies, Large-scale system simulation, Software/Networking systems, Decision making, Human-Robot cooperation/interaction

  • 2016 IEEE/SICE International Symposium on System Integration (SII)

    The topics of this symposium include, but not limited to1. System IntegrationControl technology, Robotics technology, Network system control, Plant engineering, System hardware, System software, Integration platform2. ArtifactsMechatronics systems, Automation systems, Virtual reality systems, Entertainment systems, Micro-nano systems3. Human and SocietyWelfare systems, Environment/Ecological systems, Bio systems, Rescue systems, Security systems, Enterprise resource planning systems, Supply chain management systems, Intelligent transportation systems, Logistics systems, Human, Aging Society, Health engineering4. Assistive TechnologiesLarge-scale system simulation, Software systems, Networking systems, Decision making systems

  • 2015 IEEE/SICE International Symposium on System Integration (SII)

    The topics of this symposium include, but nou limited to 1. System Integration Control technology, Robotics technology, Network system control, Plant engineerint, System hardware, System Software Integration platform, ... 2. Artifacts Mechatronics systems, Automation systems, Virtual reality systems, Entertainment systems, Micro-nano systems, ... 3. Human and Society Welfare systems, Environment/Ecological systems, Bio systems, Rescue systems, Security systems, Enterprise resource planning systems, Supply chain management systems, Intelligent transportation systems, Logistics systems, Human, Aging Society, Health engineering... 4. Assistive Technologies Large-scale system simulation, Software systems, Networking systems, Decision making systems, ...

  • 2014 IEEE/SICE International Symposium on System Integration (SII)

    The topics of this symposium include, but not limited to1. System IntegrationControl technology, Robotics technology, Network system control, Plant engineering, Systemhardware, System software, Integration platform,...2. ArtifactsMechatronics systems, Automation systems, Virtual reality systems, Entertainment systems,Micro-nano systems, ...3. Human and SocietyWelfare systems, Environment / Ecological systems, Bio systems, Rescue systems, Securitysystems, Enterprise resource planning systems, Supply chain management systems, Intelligent transportation systems, Logistics systems, Human, Aging Society, Health engineering...4. Assistive TechnologiesLarge-scale system simulation, Software systems, Networking systems, Decision makingsystems, ...

  • 2013 IEEE/SICE International Symposium on System Integration (SII)

    The topics of this symposium include, but not limited to 1. System IntegrationControl technology, Robotics technology, Network system control, Plant engineering, System hardware, System software, Integration platform,...2. ArtifactsMechatronics systems, Automation systems, Virtual reality systems, Entertainment systems, Micro-nano systems, ... 3. Human and SocietyWelfare systems, Environment / Ecological systems, Bio systems, Rescue systems, Security systems, Enterprise resource planning systems, Supply chain management systems, Intelligent transportation systems, Logistics systems, Human, Aging Society, Health engineering... 4. Assistive TechnologiesLarge-scale system simulation, Software systems, Networking systems, Decision making systems, ...

  • 2012 IEEE/SICE International Symposium on System Integration (SII 2012)

    System integration is one of the key technologies and the integration of hardware and software is especially important to solve the industrial or social system problems. This conference focuses to the new research and industrial application of system integration, and discusses the approach method to improve effectiveness of system integration.

  • 2011 IEEE/SICE International Symposium on System Integration (SII 2011)

    System integration is one of the key technologies and the integration of hardware and software is especially important to solve the industrial or social system problems in new century. This conference focuses to the new research and industrial application of system integration, and discusses the approach method to improve effectiveness of system integration.

  • 2010 IEEE/SICE International Symposium on System Integration (SII 2010)

    System integration is one of the key technologies and the integration of hardware and software is especially important to solve the industrial or social system problems in the new century. The symposium focuses on new researches and industrial applications of system integration.

  • 2009 IEEE/SICE International Symposium on System Integration (SII 2009)

    System integration is one of the key technologies and the integration of hardware and software is especially important to solve the industrial or social system problems in the new century. The symposium focuses on new researches and industrial applications of system integration.

  • 2008 IEEE/SICE International Symposium on System Integration (SI International 2008)

    System integration is an important key issue in the recent trend of technology which gives objective-oriented solutions to vairous problems. The symposium focuses on principles and practices of future system integration on the basis of fact cases.


2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems & Eurosensors XXXIII (TRANSDUCERS & EUROSENSORS XXXIII)

The world's premiere conference in MEMS sensors, actuators and integrated micro and nano systems welcomes you to attend this four-day event showcasing major technological, scientific and commercial breakthroughs in mechanical, optical, chemical and biological devices and systems using micro and nanotechnology.The major areas of activity in the development of Transducers solicited and expected at this conference include but are not limited to: Bio, Medical, Chemical, and Micro Total Analysis Systems Fabrication and Packaging Mechanical and Physical Sensors Materials and Characterization Design, Simulation and Theory Actuators Optical MEMS RF MEMS Nanotechnology Energy and Power


2019 IEEE International Ultrasonics Symposium (IUS)

The conference covers all aspects of the technology associated with ultrasound generation and detection and their applications.


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Periodicals related to Microfiltration

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Advanced Packaging, IEEE Transactions on

The IEEE Transactions on Advanced Packaging has its focus on the modeling, design, and analysis of advanced electronic, photonic, sensors, and MEMS packaging.


Biomedical Circuits and Systems, IEEE Transactions on

The Transactions on Biomedical Circuits and Systems addresses areas at the crossroads of Circuits and Systems and Life Sciences. The main emphasis is on microelectronic issues in a wide range of applications found in life sciences, physical sciences and engineering. The primary goal of the journal is to bridge the unique scientific and technical activities of the Circuits and Systems ...


Consumer Electronics, IEEE Transactions on

The design and manufacture of consumer electronics products, components, and related activities, particularly those used for entertainment, leisure, and educational purposes


Industry Applications, IEEE Transactions on

The development and application of electric systems, apparatus, devices, and controls to the processes and equipment of industry and commerce; the promotion of safe, reliable, and economic installations; the encouragement of energy conservation; the creation of voluntary engineering standards and recommended practices.


Microelectromechanical Systems, Journal of

A journal covering Microsensing, Microactuation, Micromechanics, Microdynamics, and Microelectromechanical Systems (MEMS). Contains articles on devices with dimensions that typically range from macrometers to millimeters, microfabrication techniques, microphenomena; microbearings, and microsystems; theoretical, computational, modeling and control results; new materials and designs; tribology; microtelemanipulation; and applications to biomedical engineering, optics, fluidics, etc. The Journal is jointly sponsored by the IEEE Electron Devices ...


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Most published Xplore authors for Microfiltration

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Xplore Articles related to Microfiltration

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New method on assessment of membrane fouling potential -UMFI

2011 Second International Conference on Mechanic Automation and Control Engineering, 2011

The critical flux was determined by flux-step method in this paper. Under different permeate flows and multiple cycle filtration, the regulation of united membrane fouling index (UMFI) and irreversible fouling UMFI (UMFI<sub>ir</sub>) was studied. Both removal efficiency of dissolved organic matter (DOM) and UMFI accompanying with permeate flow were also discussed. The results showed that gradual fouling still existed under ...


All plastic microfluidic device with built-in 3-D fine microstructures

Digest of Papers Microprocesses and Nanotechnology 2005, 2005

This paper presents the fabrication of all plastic microfluidic devices with built-in 3-D fine microstructures. The built-in micromeshes in the microchannel were formed by the combination of the multi-angle inclined backside exposure and top side exposure of thick Epon SU-8 photoresist on a glass substrate. The lift off method, using LOR (Lift-off Resist) as a sacrificial layer, was utilized to ...


Piecewise-linear characteristics of MSLMS filter

Proceedings of ISSE'95 - International Symposium on Signals, Systems and Electronics, 1995

The MSLMS (microstatic LMS) filter is a new kind of nonlinear filter, which stems from the filter based on the threshold decomposition approach. In this paper, the MSLMS filter is studied from another point of view, i.e. that of the piecewise-linear (PWL) filtering theory. From this study it is seen that the MSLMS filter belongs to a subset of known ...


MEMS microfilter with acoustic cleaning

Technical Digest. MEMS 2001. 14th IEEE International Conference on Micro Electro Mechanical Systems (Cat. No.01CH37090), 2001

This paper reports the design, fabrication, and testing of a new MEMS microfilter developed from a flexural plate wave (FPW) device in which acoustic forces generated within the filter membrane act to free particles and sweep them away from clogged pores. MEMS devices have already been shown to be effective for absolute filtration, but clogging has made them impractical for ...


A disposable DNA sample preparation microfluidic chip for nucleic acid probe assay

Technical Digest. MEMS 2002 IEEE International Conference. Fifteenth IEEE International Conference on Micro Electro Mechanical Systems (Cat. No.02CH37266), 2002

A new DNA sample preparation microfluidic chip for Nucleic Acid (NA) probe assay has been proposed. The proposed microfluidic chip is composed of three parts: microfilter, micromixer and DNA purification chip. We have fabricated a microsieve type filter with an array of 2.2 /spl mu/m diameter holes. We have also demonstrated the mixing can be successfully achieved for low Reynolds ...


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  • New method on assessment of membrane fouling potential -UMFI

    The critical flux was determined by flux-step method in this paper. Under different permeate flows and multiple cycle filtration, the regulation of united membrane fouling index (UMFI) and irreversible fouling UMFI (UMFI<sub>ir</sub>) was studied. Both removal efficiency of dissolved organic matter (DOM) and UMFI accompanying with permeate flow were also discussed. The results showed that gradual fouling still existed under operation of sub- critical condition owing to the existence of local supra-critical flux. Besides, the tendency of UMFI increased gradually attributing to the outer and inner pore adsorption/clogging as well as cake layer formation; on the contrary, UMFI<sub>ir</sub> decreased gently. The removal of DOM was improved with flux increasing because of cake layer being further compressed and becoming denser. The relationship between DOM transmission and UMFI was inverse ratio.

  • All plastic microfluidic device with built-in 3-D fine microstructures

    This paper presents the fabrication of all plastic microfluidic devices with built-in 3-D fine microstructures. The built-in micromeshes in the microchannel were formed by the combination of the multi-angle inclined backside exposure and top side exposure of thick Epon SU-8 photoresist on a glass substrate. The lift off method, using LOR (Lift-off Resist) as a sacrificial layer, was utilized to remove the all SU-8 device from the substrate. The monolithic plastic structures realize uniform physical and chemical properties required in microfluidic devices for practical applications. Fragmentation of a water droplet in organic carrier formed by two phase flow was demonstrated.

  • Piecewise-linear characteristics of MSLMS filter

    The MSLMS (microstatic LMS) filter is a new kind of nonlinear filter, which stems from the filter based on the threshold decomposition approach. In this paper, the MSLMS filter is studied from another point of view, i.e. that of the piecewise-linear (PWL) filtering theory. From this study it is seen that the MSLMS filter belongs to a subset of known PWL filters. It is theoretically investigated that the use of the MSLMS filter is limited since the subset it belongs to has a drawback in approximating a desired filtering operator. This drawback is overcome by another PWL filter, e.g. the so-called CPWL filter, which may be taken as a generalization of the MSLMS filter. An example of our simulations is presented, which verify the study.

  • MEMS microfilter with acoustic cleaning

    This paper reports the design, fabrication, and testing of a new MEMS microfilter developed from a flexural plate wave (FPW) device in which acoustic forces generated within the filter membrane act to free particles and sweep them away from clogged pores. MEMS devices have already been shown to be effective for absolute filtration, but clogging has made them impractical for most applications. Also previously shown was the ability of flexural plate wave (FPW) devices to move particles in a pumped liquid. Recognizing the FPW pumping as a self-cleaning mechanism for microfilters presents exciting possibilities for reduced filter fouling, allowing larger volumes of fluid to be filtered and extending filter lifetime. Both the filtered fluid and the collected large particles could be the useful output. Acoustic particle manipulation has now been shown to free 2 and 10 /spl mu/m diameter spheres and sweep them away from once-blocked pores in both 4 /spl mu/m and 8 /spl mu/m filters. Experiments were performed with deionized (DI) water and polystyrene spheres.

  • A disposable DNA sample preparation microfluidic chip for nucleic acid probe assay

    A new DNA sample preparation microfluidic chip for Nucleic Acid (NA) probe assay has been proposed. The proposed microfluidic chip is composed of three parts: microfilter, micromixer and DNA purification chip. We have fabricated a microsieve type filter with an array of 2.2 /spl mu/m diameter holes. We have also demonstrated the mixing can be successfully achieved for low Reynolds number below 50 by using the fabricated micromixer. The fabricated DNA purification chip has shown a binding capacity of 15 ng/cm/sup 2/ and a minimum extractable input concentration of 100 copies/200 /spl mu/L. The proposed microfluidic chip can be applied for low-cost, disposable sample preparation of NA probe assays.

  • Membrane Fouling in Coagulation - Microfiltration Treatment Wastewater Containing Silver

    Coagulation-microfiltration process was used to treat the wastewater containing silver from silver powder factories. Adopting sodium hydroxide as coagulants, four stages tests were conducted. The membrane fouling in coagulation- microfiltration treatment wastewater containing silver was researched. The effect factors of the membrane fouling, such as the volume of the effluent, the mixed liquor suspended solid concentration (MLSS), shearing force on the membrane surface, operational mode and so on, were analyzed. The test results shown that as the MLSS closed to critical mixed liquor suspended solid concentration (CMLSS), the membrane fouling resistance Rp increased rapidly; enhancing the aeration on the membrane and using intermittent operation could increase CMLSS value, and could improve the efficiency of membrane reactor.

  • Dynamic Membrane Formation Mechanisms of a Combined Coagulation Dynamic Membrane Process in Treating Polluted River Water at a Constant Pressure

    The dynamic membrane formation mechanisms and filtration mechanisms were investigated at 4 cm and 8 cm water head drop (WHD). Flux variation, resistance plot curve shape, the relationship t/V - t and t/V - V were investigated to study the dynamic membrane formation and filtration. And effluent turbidity and particles size distribution were also used to demonstrate the effluent particles size. Based on the flux stability, the dynamic membrane formation time is 120 min and 70 min for 4 cm and 8 cm WHD respectively. According to the forces analysis of a streaming particle, the reason was given about less time is needed for the dynamic membrane formation at higher WHD. Through the analysis of the resistance curve plot and the relationship of t/V - t and t/V - V, the dynamic membrane firstly is formed by cake growth, then small particles were captured by the formed cake, in this stage internal fouling is the dominant mechanism. After the dynamic membrane formation, screening becomes leading operation for particles removal including lager particles and small particles. Turbidity was used to illuminate the suspended solids in the effluent. Effluent turbidity shows that the membrane module occupies the good ability for particles removal before the dynamic membrane formation. Particles size distribution indicates that particles removal ability was formed gradually.

  • A novel fabrication of in-channel 3-D micromesh structure using maskless multi-angle exposure and its microfilter application

    This paper presents a novel fabrication method of in-channel three-dimensional micromesh structures using the conventional photolithography. The micromesh was realized by exposing UV light from the backside of the SU-8 coated metal- patterned glass substrate for different angles. Numbers of exposure and irradiation angle decided the shape and the size of micromesh. Based on this technique, three different micromesh-inserted microchannel structures were fabricated. For hydrodynamic characterization, their flow resistances were measured. Finally, for the application of micro total analysis system (/spl mu/TAS), the microfilter was fabricated and its filtering property was demonstrated.

  • Performance of Soluble microbial products in hybrid membrane bioreactor with suspended carriers

    Soluble microbial products (SMP) would accumulate in membrane bioreactor (MBR) and result in membrane fouling due to the membrane rejection. A new hybrid membrane bioreactor with porous suspended carriers (HMBR) explored by author was effective in controlling membrane fouling. The behaviors of SMP in HMBR were investigated in such aspects as concentration variation with operation time, molecular weight distributions (MWDs), hydrophobicity, specific cake resistance of supernatant. UV254 absorbance indicated that SMP in HMBR increased with operation time. The MWDs experiments revealed that the distribution of SMP showed a double peaks curve, the two peaks appeared in high-molecular weigh (&gt;;100 kDa) and lowmolecular weigh (&lt;; 2kDa), and the latter was far higher than the former. However, the former had an increasing tendency with operation time. The hydrophobicity of SMP in HMBR and MBR gradually increased with time, and the former had a higher increasing rate. The dead-end filtration tests were used to indicate the SMP effect on membrane fouling and the specific cake resistance of supernatant in HMBR and MBR were determined. The results showed that the specific cake resistance of supernatant had a large increasing tendency.

  • Deflection and maximum load of microfiltration membrane sieves made with silicon micromachining

    With the use of silicon micromachining, an inorganic membrane sieve for microfiltration has been constructed having a silicon nitride membrane layer with thickness typically 1 /spl mu/m and perforations typically between 0.5 /spl mu/m and 10 /spl mu/m in diameter. As a support a <100>-silicon wafer with openings of 1000 /spl mu/m in diameter has been used. The thin silicon nitride layer is deposited on an initially dense support by means of a suitable chemical vapor deposition method (LPCVD). Perforations in the membrane layer are obtained with use of standard photo lithography and reactive ion etching (RIE). The deflection and maximum load of the membrane sieves are calculated in a first approximation. Experiments to measure the maximum load of silicon-rich silicon nitride membranes have confirmed this approximation.



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