Development and characterization of ceramic nanofiltration membranes

Benfer, S.; Popp, U.; Richter, Hannes; Siewert, Christian; Tomandl, G.

doi:10.1016/s1383-5866(00)00133-7

Cited by 126 publications

(65 citation statements)

References 7 publications

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“…[94][95][96] Employing ceramic filtration membranes for oily wastewater treatment is also studied and reported by some researchers. [96][97][98][99][100][101][102][103][104][105][106][107][108][109] Because of the limitation of their pore sizes, directly employing ceramic membranes for the separation of emulsified oil/water mixtures would cause severe fouling problem and low fluxes.…”

Section: Ceramic Filtration Membranesmentioning

confidence: 99%

Recent progress in developing advanced membranes for emulsified oil/water separation

2014

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The separation of oily wastewater, especially emulsified oil/water mixtures, is a worldwide challenge because of the large amount of oily wastewater produced in many industrial processes and daily life. For the treatment of oily wastewater, membrane technology is considered the most efficient method because of its high separation efficiency and relatively simple operational process. In this short review, the recent development of advanced filtration membranes for emulsified oil/water mixture separation is presented. We provide an overview on both traditional filtration membranes, including polymer-dominated and ceramic-based filtration membranes, and recently developed nanomaterial-based functional filtration membranes, especially one-dimensional nanomaterials, for effectively treating emulsified oil/water mixtures. The liquid flux and antifouling property, which are the most important factors for membrane performance evaluation, are described for different types of membranes. Conclusions and perspectives concerning the future development of filtration membranes are also provided.

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Section: Ceramic Filtration Membranesmentioning

confidence: 99%

Recent progress in developing advanced membranes for emulsified oil/water separation

2014

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“…Inorganic membranes are also used for the rejection of organic molecules and ion separation in aqueous solutions. The major strength of inorganic membranes is their higher chemical, thermal, and mechanical stability compared to organic membranes [12]. Applicability of inorganic membranes is of great importance in non-aqueous filtration due to their stability in organic solvents [13].…”

Section: Introductionmentioning

confidence: 99%

Inorganic fouling of pressure-driven membrane processes — A critical review

2010

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“…Alumina membranes based on the application of a template polymer were produced over decades (Benfer et al 2001;Richter et al 1997;Benfer et al 2004) with varying pore sizes and permeation rates. However, there was a current limitation for the practical application of these alumina membranes due to the failure in the production of a complete crack-free layer by the sol-gel technique.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of alumina, titania, and alumina-titania hydrophobic membranes via sol?gel polymeric route

et al. 2013

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Nanometer TiO 2 -Al 2 O 3 composite membranes were synthesized through the sol-gel polymeric reaction of TiCl 4 and AlCl 3 in the presence of acrylic-acrylamide copolymer as a template. The dried samples were characterized by DTA, TGA, FTIR, XRD, and TEM to determine the thermal behavior, chemical composition, crystal structure, shape, and size of the particles. Octyltrichlorosilane was chosen as a silane coupling agent to increase the hydrophobic nature of the prepared membranes. The morphological structure, hydrophobic nature, water permeability, and desalination efficiency of the prepared membranes were studied by SEM, contact angle, permeability, and NaCl rejection coefficient (R%) measurements. The crystal structure of titania and alumina particles in the composite was affected by the AlCl 3 and TiCl 4 feed ratio. As the titania concentration increased, the average particle size of the composite particles became larger and the uniformity of the membrane layer decreased. The alumina (75%)-titania (25%) composite (AT25) showed a uniform crack-free membrane layer with a pore diameter of 12.9 nm and a porosity of 21.46%, with great hydrophobic nature, and with contact angle reaching 116°. This membrane can withstand calcination temperature up to 700°C, as the alumina and titania were present in their active forms: gamma-alumina and anatase, respectively. The membrane produced from this composite showed a high surface area of 333 m 2 /g with a respective particle size of 4.6 nm. Moreover, it showed a high ability to reject NaCl from water with a rejection coefficient of 73% and a high permeation flux of 4.8 l/h m 2 at 75°C.

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Development and characterization of ceramic nanofiltration membranes

Cited by 126 publications

References 7 publications

Recent progress in developing advanced membranes for emulsified oil/water separation

Recent progress in developing advanced membranes for emulsified oil/water separation

Inorganic fouling of pressure-driven membrane processes — A critical review

Synthesis of alumina, titania, and alumina-titania hydrophobic membranes via sol?gel polymeric route

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