Microfiltration Articles

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Fouling of a microfiltration membrane by humic-like substances: a mathematical approach to modelling permeate flux and membrane retention

by IWA Publishing  (Apr. 6, 2016)

Membrane retention of the humic-like substances present in a soluble microbial products (SMP) suspension was studied by using a dead-end filtration system. The SMP suspension was extracted from the sludge of an enhanced biological phosphorus removal-membrane bioreactor. Our results showed that both adsorption and steric retention of the ...

Microfiltration of vinasse: sustainable strategy to improve its nutritive potential

by IWA Publishing  (Dec. 14, 2015)

The purpose of this article was to evaluate and establish microfiltration (MF) operating conditions for vinasse (ethanol industries wastewater also known as stillage, slop, distillery effluent or dunder) concentration aiming to improve the use of its nutritive potential. The operating conditions influence permeate flux that has been evaluated ...

A comparative study between stirred dead end and circular flow in microfiltration of China clay suspensions

by IWA Publishing  (Oct. 30, 2015)

A well-defined comparative study between stirred dead end and circular crossflow for microfiltration of china clay suspensions has been undertaken. The comparisons have been made with respect to convective mass transfer coefficients, permeation and rejection rates, and energy consumption. Similar operating and hydrodynamic conditions were ...

Treatment of landfill leachate by hybrid precipitation/microfiltration/nanofiltration process

by IWA Publishing  (Jul. 16, 2015)

This paper describes a promising method to treat stabilized landfill leachate. Such method consists of a combination of chemical precipitation processes, a cost-effective technique with high potential to remove contaminants with foulant nature, microfiltration aimed at removing the produced precipitate and nanofiltration (NF) for final ...

Confirmation of the correlation between membrane fouling in microfiltration and biopolymer concentrations in various Japanese surface waters

by IWA Publishing  (Apr. 8, 2015)

A variety of surface waters used for drinking water sources were collected from different parts of Japan to investigate a correlation between the concentration of hydrophilic biopolymer (e.g. proteins and polysaccharides) in the feed water and membrane fouling in microfiltration. Hollow-fiber membranes made from polyvinylidene fluoride with a ...

Water reclamation with hybrid coagulation–ceramic microfiltration: first part of a long-term pilot study in Portugal

by IWA Publishing  (Mar. 20, 2015)

Sustainable water management must nowadays consider alternative water sources and the use of reclaimed water is a good candidate. Low-pressure ceramic membrane filtration is an emerging option for safe water reclamation given its high mechanical and chemical robustness with safety and operational advantages. One-year pilot studies of hybrid ...

Cake porosity analysis using 1D–3D fractal dimensions in coagulation–microfiltration of NOM

by IWA Publishing  (Mar. 16, 2015)

Fouling during coagulation–ceramic microfiltration of natural organic matter was investigated. Two process configurations (inline coagulation (IC) and tank coagulation (TC)) and two process conditions (types of coagulants–aluminum-based PAX and iron-based PIX–and G-values) were studied. The rate of irreversible fouling ...

Validation of the Goreangab Reclamation Plant in Windhoek, Namibia against the 2008 Australian Guidelines for Water Recycling

by IWA Publishing  (Mar. 13, 2015)

Australia has had Guidelines in place for water recycling (for all uses other than the augmentation of drinking water supplies) since 2006. These Guidelines were extended to cover potable reuse in May 2008 and have been applied to two potable reuse projects in Australia – one a trial plant in Perth, Western Australia and the second for a ...

RO membrane cleaning using microbubbles at 6,800m3/day Wastewater RO Plant in UAE.

by Genesys International Limited  (Oct. 6, 2014)

It is well known that any fouling of the membrane surface has a dramatic effect on energy consumption and plant efficiency; this is particularly true for waste water RO plants due to the higher fouling rate. Such fouling can be very difficult to clean using commodity chemicals or even speciality chemicals. This paper explores the use of a novel ...

Virus removal by an in-line coagulation–ceramic microfiltration process with high-basicity polyaluminum coagulation pretreatment

by IWA Publishing  (Jun. 12, 2014)

The ability of in-line coagulation pretreatment with high-basicity polyaluminum chloride (PACl) coagulants to enhance virus removal by ceramic microfiltration (MF) was examined by comparing virus removal efficiencies from water pretreated with PACl-2.2 (basicity 2.2) and PACl-2.5 (basicity 2.5) versus alum, a synthetic aluminum chloride (AlCl3) ...

Clarification of rough beer in brewery industry case study

by RVF-filtration  (May 9, 2014)

Standard filtration uses diatomaceous earth (Kieselguhr) into filter-press and consists in the retention of solid particles (yeast cells, macrocolloids, suspended matter) and solutes responsible for haze. After use the disposal of Kieselguhr (after filtration) are a major difficulty due to their polluting effect. From the health perspective, the ...

Influence of extracellular polysaccharides (EPS) produced by two different green unicellular algae on membrane filtration in an algae-based biofuel production process

by IWA Publishing  (May 7, 2014)

In the present study, two strains of green algae named S1 and S2, categorized as the same species of Pseudo-coccomyxa ellipsoidea but showing 99% homology, were cultivated under the same conditions and filtrated with a microfiltration membrane. On the basis of the results of the extracellular polysaccharides (EPS) characteristics of these ...

Long-term studies on hybrid ceramic microfiltration for treatment of surface water containing high dissolved organic matter

by IWA Publishing  (Apr. 14, 2014)

This long-term pilot-scale study on the performance of ceramic microfiltration (CMF) was conducted at the Bangkhen water treatment plant (BWTP), with the raw water from Chaophraya River, Thailand. Raw water turbidity and dissolved organic carbon (DOC) were varied in the ranges of 20–210 NTU and 3.0–8.5 mg/L respectively. The hybrid ...

Recovery of volatile fatty acids (VFA) from complex waste effluents using membranes

by IWA Publishing  (Feb. 19, 2014)

Waste effluents from anaerobic digesters of agricultural waste were treated with a range of membranes, including microfiltration and nanofiltration (NF), to concentrate volatile fatty acids (VFA). Microfiltration was applied successfully to produce sterile, particle-free solutions with a VFA concentration of 21.08 mM of acetic acid and 15.81 mM ...

Analyzing the spatial and temporal characteristics of membrane fouling

by IWA Publishing  (Dec. 13, 2013)

Fouling characteristics of crossflow flat-sheet membranes for two Nanofiltration (NF), one Ultrafiltration (UF), and one Microfiltration (MF) membranes were analyzed using 12.5 parts per million (mg/L) FeCl3 solution and 350 mg/L copper nanofluid. FeCl3 solution represents dissolved contaminant whereas copper nanofluid simulates particulate ...

Facile fouling resistant surface modification of microfiltration cellulose acetate membranes by using amino acid l-DOPA

by IWA Publishing  (Aug. 29, 2013)

A major obstacle in the widespread application of microfiltration membranes in the wet separation processes such as wastewater treatment is the decline of permeates flux as a result of fouling. This study reports on the surface modification of cellulose acetate (CA) microfiltration membrane with amino acid l-3,4-dihydroxy-phenylalanine (l-DOPA) ...

Industrial Media Filtration Systems, Philippines

by Pure Aqua, Inc.  (Jul. 1, 2013)

INTRODUCTION In July 2013, Pure Aqua successfully manufactured industrial media filtration systems to a major company in Philippines to remove particulates, chlorine, organics, and odor from well water. The industrial media filtration systems were selected from our MF-1000 Series with 48" and 42" diameter ...

Microfiltration Pilot System, California

by Pure Aqua, Inc.  (May 1, 2013)

INTRODUCTION In May 2013, Pure Aqua, Inc. successfully manufactured and supplied an microfiltration pilot system to a membrane manufacturer for Title 22 certification. Title 22 is the State of California’s stringent standard for treatment/disinfection of wastewater for non-potable reuse and ...

Comparative study on electro-microfiltration (EMF) of water containing different carbon nanotubes (CNTs)

by IWA Publishing  (Mar. 18, 2013)

Disposal and penetration of carbon nanotubes (CNTs) into the environment have raised increasing concerns over the years. In this study, a laboratory scale electro-microfiltration (EMF) was used to treat water containing single wall carbon nanotubes (SWCNTs) and multi-wall carbon nanotubes (MWCNTs). The goal was to examine and compare the ...

Removal of DOM and THM formation potential of tropical surface water by ceramic microfiltration

by IWA Publishing  (Oct. 19, 2012)

Dissolved organic matter (DOM) and trihalomethane formation potential (THMFP) removal by ceramic microfiltration (CMF) under different operating conditions was investigated and compared with the performance of a conventional water treatment plant at Bangkhen, Thailand. The tropical surface raw water for all the experiments was taken from ...

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