One step co-sintering process for low-cost fly ash based ceramic microfiltration membrane in oil-in-water emulsion treatment

Zou, Dong; Qiu, Minghui; Chen, Xianfu; Drioli, Enrico; Fan, Yiqun

doi:10.1016/j.seppur.2018.08.040

Cited by 122 publications

(31 citation statements)

References 60 publications

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“…Compared with the organic membrane, the inorganic porous ceramic membrane has some outstanding advantages that organic membrane does not have, such as great thermal stability, high mechanical strength, acid and alkali resistance, long life span, and so on. Zou et al [10] proposed a novel process for the preparation of a low-cost fly ash based a cosintering process. In the novel process, the microfiltration layer was sprayed on fly ash carrier, and mullite fiber was added to reduce cosintering differences.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Coal Ash Ceramic Membranes for Water and Heat Recovery from Flue Gas

Chen

Wei

et al. 2019

Journal of Chemistry

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In this paper, the manufacturing process of microceramic membrane is summarized. The main material of this membrane is fly ash which can reduce the sintering temperature and save the costs. The coal ash ceramic membrane (CACM) was characterized by XRD, SEM, and mercury intrusion method. The results show that the mullite phase formed by CACM at the sintering temperature of 1250°C has morphology and structural characteristics similar to the commercial microceramic membrane. The membrane surface is uniform and dense, without cracks; the pore diameter is 1–4 μm, and the porosity is 26.6%. Furthermore, the CACM and CMCM were compared at the aspects of water and heat recovery performance using flue gas. The experiment indicated that when the flue gas temperature was 50–85°C, the water recovery performance of these two kinds of membrane was similar. Also, the heat transfer capability of the coal ash ceramic membrane was close to that of the commercial microceramic membrane when the temperature range of flue gas was controlled between 50°C and 70°C. When the temperature of flue gas reaches 80°C, the heat transfer performance of the commercial ceramic membrane is better, and the difference of heat recovery between these two kinds of membranes is 19.3%. In general, the CACM and CMCM have similar mass transfer performance, and the heat transfer efficiency of CACM is lower than that of CMCM, but the costs of CACM is much lower than that of CMCM which has a good research prospect in the future.

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Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Coal Ash Ceramic Membranes for Water and Heat Recovery from Flue Gas

Chen

Wei

et al. 2019

Journal of Chemistry

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“…The influence of flue gas temperature on water recovery performance is shown in Compared with other studies, the ceramic membranes manufactured by fly ash [27,29], kaolin [20] and clay [24] are mostly used for juice clarification [29], oil-water emulsion treatment [31], and are currently less used for flue gas moisture recovery.…”

Section: Flue Gas Dehydration Experiments Resultsmentioning

confidence: 97%

“…Suresh et al [30] employed fly ash, quartz and calcium carbonate to fabricate ceramic microfiltration membranes and evaluated membrane performances using synthetic oil-water emulsions. Zou et al [31] used fly ash to prepare ceramic microfiltration membrane and used in oil-water emulsion treatment. Fu et al [32] fabricated mullite ceramic membranes by using fly ash and Al(OH)3 and MoO3 and planned for water filtration.…”

Section: Introductionmentioning

confidence: 99%

Study on the preparation and properties of talcum-fly ash based ceramic membrane supports

Cheng

Zhang

et al. 2020

Preprint

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Ceramic membrane method for moisture recovery from flue gas of thermal power plants is of considerable interest due to its excellent selection performance and corrosion resistance. However, manufacturing costs of commercial ceramic membranes are still relatively expensive, which promotes the development of new methods of preparing low-cost ceramic membranes. In this study, a method for the preparation of porous ceramic membrane supports is proposed. Low-cost fly ash from power plants is the main material of the membrane supports, and talcum is the additive. The fabrication process of the ceramic membrane supports is described in detail. The properties of the supports were fully characterized, including surface morphology, phase composition, pore diameter distribution and porosity. Corrosion resistance and mechanical strength of the supports were measured. The obtained ceramic membrane support displays a pore size of about 5 µm and porosity of 37.8%. Furthermore, the water recovery performance of the supports under different operating conditions was experimentally studied. The experimental results show that, the recovered water flux varies with operating conditions. In the study, the maximum recovered water flux reaches 5.22 kg/(m2·h). The findings provide a guidance for the ceramic membrane supports application of water recovery from flue gas.

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“…Compared with other studies, the ceramic membranes manufactured by fly ash [ 29 , 31 ], kaolin [ 22 ], and clay [ 26 ] are mostly used for juice clarification [ 31 ], oil-water emulsion treatment [ 33 ], and are currently less used for flue gas moisture recovery. A comparison of different research studies on water flux and experimental conditions is listed in Table 4 .…”

Section: Resultsmentioning

confidence: 99%

“…Suresh et al [ 32 ] employed fly ash, quartz, and calcium carbonate to fabricate ceramic microfiltration membranes and evaluated membrane performances using synthetic oil-water emulsions. Zou et al [ 33 ] used fly ash to prepare a ceramic microfiltration membrane and used in oil-water emulsion treatment. Fu et al [ 34 ] fabricated mullite ceramic membranes by using fly ash and Al(OH) 3 and MoO 3 and planned for water filtration.…”

Section: Introductionmentioning

confidence: 99%

Study on the Preparation and Properties of Talcum-Fly Ash Based Ceramic Membrane Supports

Cheng

et al. 2020

Membranes

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Ceramic membrane method for moisture recovery from flue gas of thermal power plants is of considerable interest due to its excellent selection performance and corrosion resistance. However, manufacturing costs of commercial ceramic membranes are still relatively expensive, which promotes the development of new methods for preparing low-cost ceramic membranes. In this study, a method for the preparation of porous ceramic membrane supports is proposed. Low-cost fly ash from power plants is the main material of the membrane supports, and talcum is the additive. The fabrication process of the ceramic membrane supports is described in detail. The properties of the supports were fully characterized, including surface morphology, phase composition, pore diameter distribution, and porosity. The mechanical strength of the supports was measured. The obtained ceramic membrane supports displays a pore size of about 5 μm and porosity of 37.8%. Furthermore, the water recovery performance of the supports under different operating conditions was experimentally studied. The experimental results show that the recovered water flux varies with operating conditions. In the study, the maximum recovered water flux reaches 5.22 kg/(m2·h). The findings provide a guidance for the ceramic membrane supports application of water recovery from flue gas.

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One step co-sintering process for low-cost fly ash based ceramic microfiltration membrane in oil-in-water emulsion treatment

Cited by 122 publications

References 60 publications

Preparation and Properties of Coal Ash Ceramic Membranes for Water and Heat Recovery from Flue Gas

Preparation and Properties of Coal Ash Ceramic Membranes for Water and Heat Recovery from Flue Gas

Study on the preparation and properties of talcum-fly ash based ceramic membrane supports

Study on the Preparation and Properties of Talcum-Fly Ash Based Ceramic Membrane Supports

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