Ceramic membrane as a pretreatment for reverse osmosis: interaction between marine organic matter and metal oxides

Dramas, Laure; Croué, Jean-Philippe

doi:10.1080/19443994.2012.714728

Cited by 10 publications

(3 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ceramic microfiltration (MF) and ultrafiltration (UF) membranes are increasingly utilised in water and wastewater treatment due to their inherent advantages such as high mechanical stability, chemical stability and high hydrophilicity over conventional lowpressure polymeric membranes [1,2]. However, membrane fouling due to the attachment of aquatic organic matter on the surface and/or inner structures of the membranes remains a major issue limiting the efficiency of ceramic membrane water treatment systems [3].…”

Section: Introductionmentioning

confidence: 99%

Feedwater coagulation to mitigate the fouling of a ceramic MF membrane caused by soluble algal organic matter

Zhang

Fan

Roddick

2014

Separation and Purification Technology

View full text Add to dashboard Cite

Soluble algal organic matter (AOM) resulted from the cyanobacterial blooms in water catchments can cause severe fouling of ceramic membranes in water treatment. The effect of feedwater coagulation using alum, aluminium, ACH, ferric sulphate and ferric chloride for reducing the fouling of a commercial ceramic MF membrane (ZrO 2 -TiO 2 ) caused by the AOM released from Microcystis aeruginosa was investigated. At their optimum dosages (i.e., 5 mg Al 3+ /L and 10 mg Fe 3+ /L), all coagulants could significantly mitigate the membrane fouling, with the hydraulically reversible and irreversible fouling resistance reduced by over 90% and 65%, respectively. ACH, ferric chloride and ferric sulphate performed similarly in reducing the flux decline, and considerably better than alum did. The reduction in AOM fouling of the membrane was primarily due to the effective removal of the very high MW biopolymers (>>20,000 Da). There were much greater removals in carbohydrate (74 -77%) than protein content (15 -28%) by the coagulation. The hydrophobic compounds in the AOM solution were more susceptible to the coagulation treatment than the hydrophilic and transphilic compounds. Among the tested coagulants, ACH appeared to be more costeffective in maintaining the permeate flux and minimising the irreversible fouling for the ceramic MF membrane.

show abstract

Section: Introductionmentioning

confidence: 99%

Feedwater coagulation to mitigate the fouling of a ceramic MF membrane caused by soluble algal organic matter

Zhang

Fan

Roddick

2014

Separation and Purification Technology

View full text Add to dashboard Cite

show abstract

“…These excellent properties make ceramic membranes a primary candidate to be used for water treatment and desalination applications. Many studies have been reported to explore ceramic membrane applications for membrane-based water purification techniques such as reverse osmosis [35], [36], forward osmosis [37], [38], pervaporation [39], electrodialysis [40], and membrane distillation [41]- [44].…”

Section: Introductionmentioning

confidence: 99%

Characterization and Beneficiation of Ethiopian Kaolin for use in Fabrication of Ceramic Membrane

Zewdie

Prihatiningtyas

Dutta

et al. 2021

Preprint

View full text Add to dashboard Cite

Kaolin (china clay) is a rock material that is very rich in kaolinite. A kaolin ore from Debre Tabor, Ethiopia containing 59.2 wt.% SiO2, 24.9 wt.% Al2O3, 2.4 wt.% Fe2O3, and 8.22 wt.% loss on ignition (LOI) was physically beneficiated, chemically leached, and thermally treated for possible industrial use, especially for ceramic membrane fabrication. The leaching experiments were carried out using oxalic acid solutions as leaching reagents for the iron extraction process. The effect of acid concentration, reaction temperature, and contact time on iron leaching was investigated. It was determined that the rate of iron extraction increased with the oxalic acid concentration, leaching temperature, and contact time. A substantial reduction of iron oxide (2.4 to 0.36 wt. %) from the raw kaolin was observed at operating conditions of 2.0 M oxalic acid, the temperature of 120°C, and contact time of 120 min. A maximum kaolin whiteness index of 81.4 % was achieved through this leaching process. Finally, the physically beneficiated, chemically leached, and thermally treated kaolin raw material was used to fabricate a low-cost kaolin-based ceramic membrane. After firing at 1100°C the ceramic membrane was found to have a mass loss of 11.04 ± 0.05%, water absorption of 8.9 ± 0.4 %, linear shrinkage of 14.5 ± 0.05%. It was demonstrated to be chemically stable, having less than 3 % mass loss in acid solution, and less than 1 % mass loss in alkali solution. The newly developed membranes have thus properties comparable to commercial ceramic membranes.

show abstract

“…In addition, control of porosity in these materials is of great interest in terms of selectivity and permeate flux for a wide range of applications [1][2][3][4][5]. In particular, porous clay-based ceramics, traditionally used as building materials [6,7] have lower cost and a high potential for their configuration as membranes, [4,[8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Influence of waste addition on the porosity of clay-based ceramic membranes

Galán-Arboledas¹,

Cotes

Martı́nez

et al. 2015

Desalination and Water Treatment

View full text Add to dashboard Cite

A B S T R A C TIncorporation of waste into ceramics can be an eco-friendly alternative for modification of their microstructure and related properties such as porosity, pore size and, therefore, permeability and mechanical properties. In this work, two wastes are added to a common clay mixture traditionally used for porous ceramics manufacturing: Screen Glass, G, from monitors and TV panels, and Diatomaceous Earth, D, from oil-filtering processes. Processing of the reference clay-based material (R) and two waste-containing formulations (10 wt.% of Screen Glass, R10G, and 10 wt.% of Diatomaceous Earth, R10D) was carried out through vacuum extrusion shaping and firing of test specimens at three maximum temperatures: 850, 950, and 1,050˚C. Final sintered specimens were characterized to determine density, bending strength, and water absorption. Microstructure was observed by SEM while pore size distribution was determined by mercury intrusion porosimetry. Permeability coefficient was calculated from these experimental parameters. Materials containing Glass waste have lower porosity and larger pore size due to partial melting of glass. As a consequence, mechanical strength of R10G increases around 10% due to the lower porosity while, contrary to expectations, permeability also increases due to the larger pore size. In the case of R10D materials, extra porosity created by oil combustion during sintering also leads to larger permeability values although a significant decrease of mechanical strength and reliability is observed.

show abstract

Ceramic membrane as a pretreatment for reverse osmosis: interaction between marine organic matter and metal oxides

Cited by 10 publications

References 13 publications

Feedwater coagulation to mitigate the fouling of a ceramic MF membrane caused by soluble algal organic matter

Feedwater coagulation to mitigate the fouling of a ceramic MF membrane caused by soluble algal organic matter

Characterization and Beneficiation of Ethiopian Kaolin for use in Fabrication of Ceramic Membrane

Influence of waste addition on the porosity of clay-based ceramic membranes

Contact Info

Product

Resources

About