A novel monolithic mullite microfiltration membrane for oil-in-water emulsion separation

Rashad, Mohammed; Logesh, G.; Sabu, Ummen; Balasubramanian, M.

doi:10.1016/j.memsci.2020.118857

Cited by 49 publications

(12 citation statements)

References 54 publications

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“…Nowadays, tons of oily wastewater effluents with typical concentrations of 100–1000 mg/L are being generated with the rapid development of oil and gas, petrochemical, food processing, pharmaceutical, and metallurgical industries 13 . The treatment of these effluents to produce freshwater is an urgent requirement as the environmental concerns and high freshwater increase 14 .…”

Section: Introductionmentioning

confidence: 99%

“…The points of contact of the particles are sintered together to form a robust network after the forming‐sintering process. This results in higher open porosity and mechanical properties than that in conventional close‐packed particle structures due to the increase of fracture energy as a result of crack bridging and pull‐out effects on bonded mullite whiskers 13,15,16 …”

Section: Introductionmentioning

confidence: 99%

“…Nowadays, tons of oily wastewater effluents with typical concentrations of 100-1000 mg/L are being generated with the rapid development of oil and gas, petrochemical, food processing, pharmaceutical, and metallurgical industries. 13 The treatment of these effluents to produce freshwater is an urgent requirement as the environmental concerns and high freshwater increase. 14 Compared to conventional separation techniques, such as solvent extraction, centrifugation, pyrolysis and froth flotation, surface modification of ceramic matrix for oil-water separation have attracted widespread attention due to the high separation efficiency, simple equipment requirements, energy conservation, and environmental protection.…”

Section: Introductionmentioning

confidence: 99%

“…This results in higher open porosity and mechanical properties than that in conventional close-packed particle structures due to the increase of fracture energy as a result of crack bridging and pull-out effects on bonded mullite whiskers. 13,15,16 In the present work, Si/SiC solid waste and Al 2 (SO 4 ) 3 were used as raw materials to synthesize mullite whiskers with the aid of a Na 2 SO 4 flux. The effect of reaction temperature on controlling and adjusting the phase and morphology of the mullite whiskers has been discussed and the growth mechanism was investigated.…”

Section: Introductionmentioning

confidence: 99%

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Using Si/SiC solid waste to design urchin‐like mullite whiskers for oil‐water separation

Liu

Wang

et al. 2022

Int J Applied Ceramic Tech

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Using recyclable industrial waste Si/SiC and Al2(SO4)3 as starting materials, urchin‐like mullite whiskers were successfully synthesized via the molten salt method. The characterizations were focused on the phase transformations and morphology evolution of mullite whiskers. The circular oxidation‐dissolution‐precipitation mechanism was proposed for the growth of urchin‐like mullite whiskers. Then, the pressing‐sintering process was used for fabricating porous whisker‐structured mullite ceramics for oil‐water separation applications. Physical properties of porous ceramic, including bulk density, apparent porosity, mechanical and thermal shock resistance were measured. It was found that excessive reaction temperature could decompose the mullite, and a suitable temperature for pure urchin‐like mullite whiskers was found to be 900°C. To achieve oil‐water separation, bionic surface grafting technology was used for coating a hydrophobic and lipophilic material (octadecylamine, ODA) on mullite ceramic. Oil adsorption capacities of the ceramic/ODA for various oils, that is, .27 and .24 g/g for cooking and motor oil, respectively, were successfully achieved.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Using Si/SiC solid waste to design urchin‐like mullite whiskers for oil‐water separation

Liu

Wang

et al. 2022

Int J Applied Ceramic Tech

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“…), domestic sewage discharge and oil leakage. [ 1–8 ] Simple discharge of such a large amount of oily wastewater not only causes the waste of resources and economic losses, but also damages the ecological environment [ 9–12 ] and endangers human health. [ 13–16 ] Therefore, addressing the oily wastewater issue is urgent and inevitable.…”

Section: Introductionmentioning

confidence: 99%

Design, Development, and Outlook of Superwettability Membranes in Oil/Water Emulsions Separation

Cai

Fang

2021

Adv Materials Inter

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Oil leakage and discharge of industrial organic solvents are the main reasons for the oily wastewater. The separation of oil/water emulsions has been a global challenge due to the small particle size of the emulsions and their stabilities. An effective method is needed to resolve these issues. Superwettability membrane method has demonstrated a high separation efficiency, fast separation speed, low energy consumption, good scalability, easy operation, and recyclability. In essence, the special wettability of material is mainly determined by two factors: the chemical compositions of material surface and the surface morphology. Herein, in this review, the development of special wettability separation membranes is discussed including different preparation methods, and material preparation, such as superhydrophobic/super lipophilic, superhydrophilic/underwater superoleophobic, superlipophilic/superhydrophobic under oil, smart membranes with switchable wettability, and special wettability membranes with self‐healing or self‐cleaning property. The representative works of each part are introduced, focusing on preparation methods, innovations and separation performance of membranes. Finally, challenges and future directions in this field are also described.

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Recent Progress in Microfiltration/Ultrafiltration Membranes for Separation of Oil and Water Emulsions

Baig

Salhi

Sajid

et al. 2022

The Chemical Record

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Oily wastewater has become one of the leading causes of environmental pollution. A massive quantity of oily wastewater is released from industries, oil spills, and routine activities, endangering the ecosystem's sustainability. Due to the enormous negative impact, researchers put strenuous efforts into developing a sustainable solution to treat oily wastewater. Microfiltration/ultrafiltration membranes are considered an efficient solution to treat oily wastewater due to their low cost, small footprint, facile operation, and high separation efficiencies. However, membranes severely fouled during the separation process due to oil's adsorption and cake layer formation, which shortens the membranes’ life. This review has critically discussed the microfiltration/ultrafiltration membrane synthesizing methods and their emulsion's separation performance. In the end, key challenges and their possible solutions are highlighted to provide future direction to synthesize next‐generation membranes.

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A novel monolithic mullite microfiltration membrane for oil-in-water emulsion separation

Cited by 49 publications

References 54 publications

Using Si/SiC solid waste to design urchin‐like mullite whiskers for oil‐water separation

Using Si/SiC solid waste to design urchin‐like mullite whiskers for oil‐water separation

Design, Development, and Outlook of Superwettability Membranes in Oil/Water Emulsions Separation

Recent Progress in Microfiltration/Ultrafiltration Membranes for Separation of Oil and Water Emulsions

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