Fouling resistance in concentrating TCM extract by direct contact membrane distillation

Ding, Zijian; Liu, Liying; Liu, Zhe; Ma, Rong

doi:10.1016/j.memsci.2010.06.040

Cited by 31 publications

(13 citation statements)

References 28 publications

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“…Several theoretical models have been presented to describe heat and mass transfer in MD [43,44,64,65,[67][68][69][70][71][72][73] including the effect of the fouling layer. The additional layer due to fouling is known to add heat transfer resistance in the MD process.…”

Section: Vapor Pressure Depressionmentioning

confidence: 99%

“…The four heat transfer steps have their own driving force and thermal resistances (see Fig. 2), and in a steady state condition, the heat transfer is equal to each other and is expressed as follows [55,67]:…”

Section: Heat Transfermentioning

confidence: 99%

“…Their results showed the applicability of VMD to treat MD solution, resulting to pure water at the permeate side, however, flux decline was observed due to the formation of fouling layer. Criscuoli Ding et al [67] investigated the effect of fouling layer formation on the DCMD permeate flux during the concentration of TCM extract. The suspended solid particles from the TCM extract was found to mainly cause the fouling deposition and to a little extent, due to the presence of protein in the TCM extract.…”

Section: Organic Foulingmentioning

confidence: 99%

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Fouling and its control in membrane distillation—A review

Tijing

Woo

Choi

et al. 2015

Journal of Membrane Science

875

387

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Membrane distillation (MD) is an emerging thermally-driven technology that poses a lot of promise in desalination, and water and wastewater treatment. Developments in membrane design and the use of alternative energy sources have provided much improvement in the viability of MD for different applications. However, fouling of membranes is still one of the major issues that hounds the long-term stability performance of MD. Membrane fouling is the accumulation of unwanted materials on the surface or inside the pores of a membrane that results to a detrimental effect on the overall performance of MD. If not addressed appropriately, it could lead to membrane damage, early membrane replacement or even shutdown of operation. Similar with other membrane separation processes, fouling of MD is still an unresolved problem. Due to differences in membrane structure and design, and operational conditions, the fouling formation mechanism in MD may be different from those of pressure-driven membrane processes. In order to properly address the problem of fouling, there is a need to understand the fouling formation and mechanism happening specifically for MD. This review details the different foulants and fouling mechanisms in the MD process, their possible mitigation and control techniques, and characterization strategies that can be of help in understanding and minimizing the fouling problem.

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Section: Vapor Pressure Depressionmentioning

confidence: 99%

Section: Heat Transfermentioning

confidence: 99%

Section: Organic Foulingmentioning

confidence: 99%

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Fouling and its control in membrane distillation—A review

Tijing

Woo

Choi

et al. 2015

Journal of Membrane Science

875

387

View full text Add to dashboard Cite

show abstract

“…Ding et al found that membrane fouling was significantly inhibited with higher FR and FT . Additionally, higher FT and TMP delays the generation of MW, including postponing the start time of MW and inhibiting the MW rate .…”

Section: Resultsmentioning

confidence: 99%

Threshold Flux for Vacuum Membrane Distillation to Concentrate Herbal Aqueous Solutions

et al. 2018

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Vacuum membrane distillation (VMD) is considered an effective method for concentration of herbal aqueous solutions (HAS). However, membrane fouling and flux decline are complex problems in such concentration processes. The concept of threshold flux was proposed for optimizing the membrane process. Whether it is useful for guiding optimization of the VMD process on HAS concentration needs further investigation. The Semen Raphani aqueous solution (SRAS) was taken as an example to investigate the membrane flux behavior during SRAS concentration by VMD. The results confirmed that the threshold flux concept is applicable to concentrate HAS by VDM. At or below the threshold flux, the total resistance was independent of the flux, while above it membrane fouling increased with higher membrane flux. Moreover, limiting the flux should be avoided in the membrane process because of strong fouling and flux decline.

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“…These contaminants typically include ibuprofen (an anti-inflammatory), dibucaine (a topical anesthetic), acetaminophen (an analgesic), and diphenhydramine (an antihistamine) [63]. Ding et al investigated on the fouling resistance of PTFE membranes in the concentration of traditional Chinese medicine (TCM) by DCMD [104]. It was observed that the deposition of suspended particles in the TCM extract was the predominant cause of fouling, which can be controlled by increasing the feed temperature and feed velocity.…”

Section: Pharmaceutical Industrymentioning

confidence: 99%

Performance enhancement of the membrane distillation process via membrane surface modification for surfactant-containing feed water

Chew¹

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Fouling resistance in concentrating TCM extract by direct contact membrane distillation

Cited by 31 publications

References 28 publications

Fouling and its control in membrane distillation—A review

Fouling and its control in membrane distillation—A review

Threshold Flux for Vacuum Membrane Distillation to Concentrate Herbal Aqueous Solutions

Performance enhancement of the membrane distillation process via membrane surface modification for surfactant-containing feed water

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