Membrane oscillation and slot (pore) blocking in oil–water separation

Ullah, Asmat; Ahmad, Jamal; Khan, Hizbullah; Khan, Sajjad Wali; Zamani, Farhad; Hasan, Shadi W.; Starov, Victor; Chew, Jia Wei

doi:10.1016/j.cherd.2018.12.007

Cited by 22 publications

(15 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, on the other hand, at high interfacial tension, the blockage in pores of the membrane was found to be higher. This made the drops stiffer, and it became more difficult to push the undeformed drops through the pores, which resulted in more pore blockage [44]. 1 shows the number of crude oil drops in the permeate and permeate concentration obtained at different shear rates.…”

Section: Resultsmentioning

confidence: 99%

“… Size distribution of the mass of oil droplets stabilized by Tween 20 in the permeate at ( a ) at 200 lm −2 h −1 and ( b ) 1000 lm −2 h −1 . [ 44 ]. …”

Section: Figurementioning

confidence: 99%

“…Many researchers have also studied the impact of membrane pore geometry on separation efficiency [36][37][38][39]. Recently, slotted pore membranes were introduced for oil-water emulsion purification [24,35,[40][41][42][43][44]. It was found that a slotted pore membrane gives a greater value of permeate flux at a lower transmembrane pressure compared to circular pore membranes [35].…”

Section: Introductionmentioning

confidence: 99%

“…MF is widely used; however, membrane fouling still remains an important issue to be resolved [ 44 ]. Various methods have been suggested for the reduction of membrane fouling of increasing shear, such as higher cross flow filtration and aeration.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Influence of Membrane Vibration on Particles Rejection Using a Slotted Pore Membrane Microfiltration

et al. 2021

Self Cite

View full text Add to dashboard Cite

A new method is proposed to increase the rejection in microfiltration by applying membrane oscillation, using a new type of microfiltration membrane with slotted pores. The oscillations applied to the membrane surface result in reduced membrane fouling and increased separation efficiency. An exact mathematical solution of the flow in the surrounding solution outside the oscillating membrane is developed. The oscillation results in the appearance of a lift velocity, which moves oil particles away from the membrane. The latter results in both reduced membrane fouling and increased oil droplet rejection. This developed model was supported by the experimental results for oil water separation in the produced water treatment. It was proven that the oil droplet concentration was reduced notably in the permeate, due to the membrane oscillation, and that the applied shear rate caused by the membrane oscillation also reduced pore blockage. A four-times lower oil concentration was recorded in the permeate when the membrane vibration frequency was 25 Hz, compared to without membrane vibration. Newly generated microfiltration membranes with slotted pores were used in the experiments.

show abstract

Section: Resultsmentioning

confidence: 99%

“… Size distribution of the mass of oil droplets stabilized by Tween 20 in the permeate at ( a ) at 200 lm −2 h −1 and ( b ) 1000 lm −2 h −1 . [ 44 ]. …”

Section: Figurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of Membrane Vibration on Particles Rejection Using a Slotted Pore Membrane Microfiltration

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…It has been found that MF membrane gives greater permeate flux at lower trans membrane pressure as compared to UF process.MF is more economical for oil water separation on commercial scale [33][34][35].Various researchers have also studied the impact of membrane pore geometry on separation efficiency [36][37][38][39]. Recently slotted pore membranes were introduced for oil water emulsion purification [24,35,[40][41][42][43][44]. It was found that slotted pore membrane gives greater value of permeate flux at less trans-membrane.pressure compared to circular pore membrane [35].…”

Section: Introductionmentioning

confidence: 99%

Increasing Rejection in Microfiltration Using Vibrating Membrane

Ullah¹,

Alam²,

Khan³

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

A new method is proposed to increase rejection in microfiltration by applying membrane oscillation using a new type of microfiltration membranes with slotted pores. The oscillations applied to the membrane surface result in reducing membrane fouling and increasing separation efficiency. An exact mathematical solution of the flow in the surrounding solution outside the oscillating membrane is developed. The oscillation results in appearance of the lift velocity, which moves oil particles away from the membrane. The latter results in both reducing membrane fouling and increasing oil droplets rejection. This developed model was supported by the experimental results for oil water separation in produced water treatment. It was proven that oil droplet concentration reduced notably in the permeate due to the membrane oscillation and that applied shear rate caused by the membrane oscillation is also reduce pore blockage. New generation of microfiltration membranes with slotted pores was used in the experiments.

show abstract

Stretchable Textiles with Superwettabilities for Tunable Oil‐Water Separation

Liu

Zhang

et al. 2020

ChemNanoMat

View full text Add to dashboard Cite

Oil water separation plays a vital role in a series of industrial applications, such as petroleum industry and sewage treatments. However, traditional separation methods often suffer from non‐adjustable separation efficiency and solid impurities blockage. To solve this problem, we modify a commercially available stretchable textile with superwetting materials, including graphene oxide (GO) and polytetrafluoroethylene (PTFE), for tunable oil‐water separation. After GO coating, the stretchable textile shows superhydrophilicity in air and superoleophobicity underwater, which is further applied to tunable oils‐water separation via mechanical stretching. Interestingly, the superwetting textile is workable within a certain stretching degree. By tuning the pore size of the textile via stretching, the permeation rate increased by three times. The stretching property not only promotes the separation rate, but also imparts the self‐dredging property that can avoid solid impurities clogging in real case separation. The stretchable oil‐water separation textiles hold great potential for practical applications in sewage treatments.

show abstract

Membrane oscillation and slot (pore) blocking in oil–water separation

Cited by 22 publications

References 31 publications

Influence of Membrane Vibration on Particles Rejection Using a Slotted Pore Membrane Microfiltration

Influence of Membrane Vibration on Particles Rejection Using a Slotted Pore Membrane Microfiltration

Increasing Rejection in Microfiltration Using Vibrating Membrane

Stretchable Textiles with Superwettabilities for Tunable Oil‐Water Separation

Contact Info

Product

Resources

About