ceramic filtration Articles

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Fabrication of catalytic ceramic membranes for water filtration

by IWA Publishing  (Mar. 1, 2010)

The paper describes the use of the layer-by-layer technique to coat ceramic membranes with iron and manganese oxide nanoparticles. The coatings are thin ...

Houshold Water Treatment in Developing Countries: Ceramic Filtration

by IWA Publishing  (Mar. 8, 2012)

Household water treatment and safe storage (HWTS) interventions are proven to improve water quality and reduce diarrheal disease incidence in developing countries.  Five of these proven HWTS options – chlorination, solar disinfection, ceramic filtration, slow sand filtration, and flocculation/disinfection – are widely implemented ...

Filtration by Means of Ceramic Membranes - Practical Examples from the Chemical and Food Industries

by atech innovations gmbh  (Aug. 1, 2013)

Traditionally, ceramic membranes have been used in waste water engineering. Meanwhile, they are applied in all areas where media need to be filtered, such as in recycling processes in the chemical industry, for cell separation in biotechnology or for fruit-juice filtration in the food industry. 1 Introduction Ceramic membranes based on aluminum ...

Ceramic membranes for water treatment

by IWA Publishing  (Jan. 1, 1900)

Ceramic membranes, different in pore size and membrane material, were applied to remove particulate and dissolved matter from different spent filter backwash water types as well as from dam water. The study was conducted in pilot scale under conditions typical for waterworks at a dam water treatment plant. A comparison of different ceramic ...

Ceramic membranes with higher abrasion resistance

by atech innovations gmbh  (Dec. 26, 2013)

High flux rates, combined with a very high chemical and thermal resistance and the resulting operational reliability - these are the reasons why users worldwide opt for ceramic membranes. Up to now, the only parameter where ceramic membranes performed well but not excellent was abrasion resistance. Therefore, filtering of abrasive matter ...

Dye wastewater treatment by using ceramic membrane bioreactor

by Inderscience Publishers  (Jul. 20, 2009)

Performance of a Micro-filtration Membrane Bioreactor (MMBR) for treatment of dye wastewater was investigated. The experimental results indicated that the removal efficiency for COD, TOC and colour was 85%, 85-90% and 70%, respectively, the effluent COD was below 70 mgl−1 on average. Gel layer resistance of COD was 10%. Particle size distribution ...

Evaluation of an emerging water treatment technology: ceramic membranes

by IWA Publishing  (Dec. 1, 2010)

Historically, low-pressure membranes (microfiltration (MF) and ultrafiltration (UF)) used in potable water treatment are made of polymers (polysulfone (PS), polypropylene (PP), polyethersulfone (PES), polyvinylidene fluoride (PVDF) etc). Recently, membranes made of ceramic materials (aluminium oxide) have been developed by MetaWater (Japan), ...

Wastewater treatment using bioreactor with dual functional ceramic membrane

by Inderscience Publishers  (Jul. 20, 2009)

A novel bioreactor including a group of dual functional ceramic membranes was developed and used for wastewater treatment. The ceramic membranes could be used for both aeration and filtration alternately, so fouling to ceramic membrane would be palliated effectively as its dual functions. For 100 days operation, COD removal ratio was 88∼97% for ...

Ceramic membrane ultrafiltration of natural surface water with ultrasound enhanced backwashing

by IWA Publishing  (Mar. 1, 2010)

Ultrafiltration membrane cleaning with ultrasound enhanced backwashing was investigated with two ceramic membrane systems in parallel. One of them was subjected to ultrasound during backwashing, the other acted as a reference system. The feed water was directly taken from a creek with a sedimentation process as only pre-treatment. The cleaning ...

Virus removal efficiency of Cambodian ceramic pot water purifiers

by IWA Publishing  (Jun. 1, 2011)

Virus removal efficiency is described for three types of silver-impregnated, ceramic water filters (CWFs) produced in Cambodia. The tests were completed using freshly scrubbed filters and de-ionized (DI) water as an evaluation of the removal efficiency of the virus in isolation with no other interacting water quality variables. Removal ...

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 ...

Bacteria removal effectiveness of ceramic pot filters not applied with colloidal silver

by IWA Publishing  (Dec. 1, 2011)

In many developing countries such as Guatemala, access to safe drinking water is very limited. Many sources of water that are available are contaminated with bacteria, particularly Escherichia coli and other coliform bacteria. In order to provide a means of obtaining safe drinking water in developing countries, various methods of treating water at ...

Case Study - Organic Particulate Filtration

by Anguil Environmental Systems, Inc.  (Jan. 2, 2008)

Overview A food products company that mixes various types of waxes and other components to make the base for chewing gums was faced with the issue of cleaning up a slightly odorous, visible emission being exhausted from two of their process lines. The components of the emission were hot particles of chewing gum and some volatile organic compounds ...

Field investigation of arsenic in ceramic pot filter-treated drinking water

by IWA Publishing  (Jan. 1, 2011)

Ceramic pot filters (CPFs) is one of several household water treatment technologies that is used to treat drinking water in developing areas. The filters have the advantage of being able to be manufactured using primarily locally available materials and local labor. However, naturallyoccurring arsenic present in the clay used to make the filters ...

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 ...

City Water International explains The Basics of Water Filtration

by City Water International  (Sep. 28, 2015)

The Basics of Water Filtration Most of us know that filtered water is healthier than tap water because of its purity, but how does water filtration work? The basic principle is that filtered water has passed through a filter which removes contaminants through one of several methods, depending on the type of filter. Most water purification systems ...

Modification of tubular ceramic membranes with carbon nanotubes using catalytic chemical vapor deposition

by IWA Publishing  (Jul. 8, 2015)

In this study, carbon nanotubes (CNTs) were successfully grown on tubular ceramic membranes using the catalytic chemical vapor deposition (CCVD) method. CNTs were synthesized at 650°C for 3–6 h under a 120 mL min−1 flow of C2H6 on ceramic membranes impregnated with iron salt. The synthesis procedure was beforehand optimized in terms of ...

Integration of ceramic membrane and compressed air-assisted solvent extraction (CASX) for metal recovery

by IWA Publishing  (Sep. 1, 2010)

In our previous publications, compressed air-assisted solvent extraction process (CASX) was developed and proved to be kinetically efficient process for metal removal. In the current study, CASX with a ceramic MF membrane integrated for separation of spent solvent was employed to remove and recover metal from wastewater. MF was operated either in ...

Mullite ceramic membranes for industrial oily wastewater treatment: experimental and neural network modeling

by IWA Publishing  (Jan. 1, 2011)

In this paper, results of an experimental and modeling of separation of oil from industrial oily wastewaters (desalter unit effluent of Seraje, Ghom gas wells, Iran) with mullite ceramic membranes are presented. Mullite microfiltration symmetric membranes were synthesized from kaolin clay and α-alumina powder. The results show that the mullite ...

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 ...

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