Effect of temperature and salt on PVDF membrane wetting properties

Jiang, Kefan; Chamani, Hooman; Matsuura, Takeshi; Rana, Dipak; Lan, Christopher Q.

doi:10.36756/jcm.si1.2

Cited by 3 publications

(1 citation statement)

References 26 publications

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“…For this reason, in order to separate the feed from the distillate obtained, it is necessary to maintain a vapor layer inside the membrane. Most often, it is obtained using porous membranes made of highly hydrophobic polymers such as polypropylene (PP) [ 8 ], polytetrafluoroethylene (PTFE) [ 9 ] and polyvinylidenefluoride (PVDF) [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Stability of Ar/O2 Plasma-Treated Polypropylene Membranes Applied for Membrane Distillation

Gryta

Tomczak

2021

Membranes

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In the present work, Ar/O2 plasma treatment was used as a surface modification tool for polypropylene (PP) membranes. The effect of the plasma conditions on the properties of the modified PP surface has been investigated. For this purpose, the influence of gas composition and its flow rate, plasma power excitation as well as treatment time on the contact angle of PP membranes has been investigated. The properties of used membranes were determined after various periods of time: immediately after the modification process as well as after one, four and five years of storage. Moreover, the used membranes were evaluated in terms of their performance in long-term MD process. Through detailed studies, we demonstrated that the performed plasma treatment process effectively enhanced the performance of the modified membranes. In addition, it was shown that the surface modification did not affect the degradation of the membrane matrix. Indeed, the used membranes maintained stable process properties throughout the studied period.

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Section: Introductionmentioning

confidence: 99%

Stability of Ar/O2 Plasma-Treated Polypropylene Membranes Applied for Membrane Distillation

Gryta

Tomczak

2021

Membranes

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Exploration of time series model for predictive evaluation of long-term performance of membrane distillation desalination

Ray

Verma

Singh

et al. 2022

Process Safety and Environmental Protection

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The Impact of Operational Parameters on Polypropylene Membrane Performance during the Separation of Oily Saline Wastewaters by the Membrane Distillation Process

Tomczak

Gryta

2022

Membranes

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In the present study, membrane distillation (MD) was applied for the treatment of oily saline wastewaters produced on ships sailing the Baltic Sea. For comparison purposes, experiments were also carried out with model NaCl solutions, the Baltic Seawater and oil in water emulsions. The commercial Accurel PP V8/2 membranes (Membrana GmbH, Germany) were used. In order to investigate the impact of the operational parameters on the process performance, the experiments were conducted under various values of the feed flow velocity (from 0.03 to 0.12 m/s) and the feed temperature (from 323 to 343 K). The obtained results highlight the potential of PP membranes application for a stable and reliable long-term treatment of oily wastewater. It was demonstrated that the permeate flux increased significantly with increasing feed temperature. However, the lower temperature ensured the limited scaling phenomenon during the treatment of oily wastewaters. Likewise, increasing the feed flow velocity was beneficial to the increase in the flux. Moreover, it was found that performing a cyclic rinsing of the module with a 3% HCl solution is an effective method to maintain a satisfactory module performance. The present study sheds light on improving the MD for the treatment of oily wastewaters.

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Effect of temperature and salt on PVDF membrane wetting properties

Cited by 3 publications

References 26 publications

Stability of Ar/O2 Plasma-Treated Polypropylene Membranes Applied for Membrane Distillation

Stability of Ar/O2 Plasma-Treated Polypropylene Membranes Applied for Membrane Distillation

Exploration of time series model for predictive evaluation of long-term performance of membrane distillation desalination

The Impact of Operational Parameters on Polypropylene Membrane Performance during the Separation of Oily Saline Wastewaters by the Membrane Distillation Process

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