On-line monitoring and diagnosis of membrane fouling using ultrasonic techniques

Chen, Junghui; Yang, Yunchen; Huang, Jiayu

doi:10.1016/j.chemolab.2013.06.009

Cited by 3 publications

(2 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several concomitant effects, such as heat generation, mechanics and cavitation effect, present themselves during the propagation of ultrasonic wave in various media, and these effects have been recognized to be beneficial to many physical and chemical processes [22]. For membrane separation processes, the ultrasonic technique is used mainly in membrane fouling monitoring, membrane cleaning, and membrane flux enhancement [23][24][25][26][27][28][29]. Li and Mairal et al [30][31][32] applied ultrasonic technique as a non-destructive, realtime, in situ measuring technique for direct monitoring of membrane fouling and cleaning during ultrafiltration (UF) and RO, and found that the ultrasonic technique is a useful technique for the non-destructive investigation of fouling and cleaning in membrane applications.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic assisted direct contact membrane distillation hybrid process for membrane scaling mitigation

Hou

Wang

et al. 2015

Desalination

View full text Add to dashboard Cite

• Ultrasonic assisted membrane distillation hybrid process was designed.• The effect of ultrasonic irradiation on membrane scaling was investigated.• Ultrasonic irradiation can effectively mitigate CaSO 4 membrane scaling.• CaCO 3 had little effect on permeability with or without ultrasonic irradiation.• Ultrasonic irradiation can restrain silica colloid deposit and maintain flux. G R A P H I C A L A B S T R A C Ta b s t r a c t a r t i c l e i n f o A novel ultrasonic assisted direct contact membrane distillation hybrid process was designed and the effect of ultrasonic irradiation on membrane scaling mitigation during membrane distillation process was investigated. Under ultrasonic irradiation, ultrasonic wave refreshed the liquid-membrane interface continuously and reduced concentration polarization in the boundary layer adjacent to membrane surface simultaneously. Therefore, ultrasonic irradiation could mitigate membrane scaling caused by CaSO 4 and prevented the permeate flux decline. Although the ultrasonic irradiation could restrain the crystal size of CaCO 3 deposits and clean membrane surface, the experimental results demonstrated that it was not necessary to introduce ultrasonic irradiation into membrane distillation process for CaCO 3 membrane scaling mitigation. Due to fast precipitation rate, the concentration of CaCO 3 solution would not cause notable permeate flux decline in the absence of ultrasonic irradiation. There would be a gradual permeate flux decline during the concentration process of silica solution because of the formation and deposition of colloidal polysilicic acid on membrane surface. The ultrasonic irradiation caused the zeta potential of silica colloids to approach neutral and enhanced the tendency of colloid deposit, but the membrane surface could be effectively kept clean and the permeate flux was hardly affected by concentration factor increasing.

show abstract

Section: Introductionmentioning

confidence: 99%

Ultrasonic assisted direct contact membrane distillation hybrid process for membrane scaling mitigation

Hou

Wang

et al. 2015

Desalination

View full text Add to dashboard Cite

show abstract

“…Several concomitant effects, such as the mechanics, thermotics and cavatition effect, present themselves during the propagation of ultrasonic wave in various media, and these effects have been recognized to be beneficial to many physical and chemical processes [21]. For membrane separation processes, the ultrasonic technique is used mainly in membrane fouling monitoring and control, membrane cleaning and membrane flux enhancement [22][23][24][25][26][27][28]. Li et al and Mairal et al [29][30][31] applied the ultrasonic technique as a non-destructive, real-time, in situ measuring technique for the non-invasive direct monitoring of membrane fouling and cleaning during ultrafiltration (UF) and RO, and found that the ultrasonic technique is a useful technique for the non-destructive investigation of fouling and cleaning in membrane applications.…”

Section: Introductionmentioning

confidence: 99%

An ultrasonic assisted direct contact membrane distillation hybrid process for desalination

Hou

Dai

Fan

et al. 2015

Journal of Membrane Science

View full text Add to dashboard Cite

a b s t r a c tA novel ultrasonic assisted direct contact membrane distillation (USDCMD) hybrid process was designed and the effects of feed temperature, feed concentration, feed velocity, ultrasonic power and frequency on mass transfer were investigated. Under ultrasonic irradiation, changes and damages in membrane structure were found on PVDF membrane, while the pore size and the stretching strain of PP fibers were also enlarged and declined, respectively. The PTFE hollow fiber was selected to carry out USDCMD. The results showed that ultrasonic irradiation could effectively enhance mass transfer. Under the ultrasonic irradiation of 20 kHz and 260 W, the maximum permeate flux enhancement of 60% was obtained under conditions of feed temperature of 53 1C, feed velocity of 0.25 m/s and feed salt concentration of 140 g/L. The increment was enlarged with the decrease of feed temperature, feed velocity and ultrasonic frequency as well as the increase of feed concentration and ultrasonic power. Ultrasonic irradiation had no significant influence on the mechanical strength, pore size and hydrophobicity of the PTFE membrane in a 240 h continuous USDCMD experiment, and the novel membrane distillation process exhibited satisfying performance stability, which indicated that ultrasonic irradiation can be applied to membrane distillation for mass transfer enhancement.

show abstract

Designing a fault detection classifier framework for an industrial dynamic ultrafiltration membrane process using wavelet-based feature analysis

Zadkarami

Safavi

Gernaey

et al. 2023

Process Safety and Environmental Protection

View full text Add to dashboard Cite

On-line monitoring and diagnosis of membrane fouling using ultrasonic techniques

Cited by 3 publications

References 16 publications

Ultrasonic assisted direct contact membrane distillation hybrid process for membrane scaling mitigation

Ultrasonic assisted direct contact membrane distillation hybrid process for membrane scaling mitigation

An ultrasonic assisted direct contact membrane distillation hybrid process for desalination

Designing a fault detection classifier framework for an industrial dynamic ultrafiltration membrane process using wavelet-based feature analysis

Contact Info

Product

Resources

About