Mechanisms and factors influencing the ultrasonic cleaning of particle-fouled ceramic membranes

Lamminen, Mikko

doi:10.1016/s0376-7388(04)00197-8

Cited by 40 publications

(71 citation statements)

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“…These include the asymmetric cavitation near the solid surface that generates microjets in the direction of the surface (Lamminen et al . ). These microjets affect the mass transfer by disturbing the boundary layer of the ultrasound‐treated surfaces.…”

Section: Assisted Ultrasoundmentioning

confidence: 97%

Assisted ultrasound applications for the production of safe foods

et al. 2014

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SummaryUltrasound requires high power and longer treatment times to inactivate microorganisms when compared to ultrasound combined with other technologies. Previous reports have shown that the effectiveness of ultrasound as a decontamination technology can be increased by combining it with another treatment such as pressure, heat and antimicrobial solutions. Assisted ultrasound, the combination of ultrasound with another technology, is more energy efficient, and it has less impact on the food properties. In this review paper, the power ultrasound antimicrobial mechanisms of action, the antimicrobial effects of ultrasound in combination with other physical processes and antimicrobial solutions are comprehensively discussed. Furthermore, the present interest on using these technologies as alternative processing and decontamination methods is presented. Research outputs on the application of ultrasound combined with physical processes are showcased including applications of thermosonication, manosonication, manothermosonication and osmosonication. Antimicrobial efficacy, energy requirements and optimal operation conditions of the different assisted ultrasound technologies are critically discussed, and their impact on the food industry for future applications is presented. Overall, this review paper highlights the importance and recent developments of assisted ultrasound for enhancing food safety.

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Section: Assisted Ultrasoundmentioning

confidence: 97%

Assisted ultrasound applications for the production of safe foods

et al. 2014

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“…This can be explained by the compressional deformation of the oil droplets under higher pressure, which passed through the membrane pores into the permeate side, causing an increase in the oil content of the water at the permeate side after filtration, thus decreasing the rejection rate (Lamminen et al . ). The optimal TMP was 0.10 MPa, producing rejection rate of 66.3% and permeate flux of 789.3 L/h/m 2 .…”

Section: Resultsmentioning

confidence: 97%

Separation of Sulfoether Compounds in Garlic Oil by Integrated Membrane Technologies

Xiao

Zhong

Low

et al. 2015

J Food Process Engineering

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This study investigated an integrated process to separate sulfoether compounds from garlic oil. The garlic oil was pretreated by vapor distillation and the oil–water mixture was treated with the combination of ceramic membrane microfiltration (MF) and poly(dimethylsiloxane)/poly(vinylidene fluoride) composite membrane pervaporation (PV). The optimum operating conditions with respect to sulfoether compounds' recovery were determined to be 1.8% feed concentration, 30C and 0.10 MPa for ceramic membrane MF; and 40C, 5 h, 0.24 MPa and 0.32 L/min for PV. It was found that the emulsified oil was effectively separated by ceramic MF membranes, and the rejection rates of diallyl sulfide (DAS), diallyl disulfide (DADS) and diallyl trisulfide (DATS) were 91.11, 99.8 and 100%, respectively. In the subsequent process, PV membrane was used to recover the dissolved oil. PV membrane had a good enrichment effect on DAS and DADS in the penetrant permeate fluid, with separation factors of 6.31 and 5.45, respectively. Compared with oil–water mixture by vapor distillation, the yield of garlic oil is 99.6%. This study showed that MF and PV processes were attractive technologies for the recovery of garlic sulfoether compounds as they yield good separation and operate under mild conditions. Practical Applications Researchers have reported that active components of garlic have beneficial effect on human's health; in particular, the sulfoether compounds of garlic oil. However, the development of process technology and high value‐added products of garlic is lacking. The present study provides an integrated process to separate sulfoether compounds from garlic oil. The results indicated that microfiltration and pervaporation processes were effective technologies for the recovery of garlic sulfoether compounds. These processes should be taken as good examples for extraction of plant essential oil and the treatment of oily wastewater generated by the industry to achieve oil–water separation.

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“…Ultrasonic cleaning utilizes cavitational microstreaming 50 induced by high frequency pressure sound waves to agitate a liquid. In contrast with bubble-array acoustic microstreaming method, for the ultrasonic operation, there is no air pocket needed for the mixing performance.…”

Section: Resultsmentioning

confidence: 99%

Reconfigurable microfluidic dilution for high-throughput quantitative assays

Fan

Xing

et al. 2015

Lab Chip

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This paper reports a reconfigurable microfluidic dilution device for high-throughput quantitative assays, which can easily produce discrete logarithmic/binary concentration profiles ranging from 1 to 100-fold dilution in parallel from a fixed sample volume (e.g., 10 μL) without any assistance of continuous fluidic pump or robotic automation. The integrated dilution generation chip consists of switchable distribution and collection channels, metering reservoirs, reaction chambers, and pressure-activatable Laplace valves. Following the sequential loading of a sample, a diluent, and a detection reagent into the individual metering chambers, the top microfluidic layer can be reconfigured to collect the metered chemicals into the reaction chambers in parallel, where detection will be conducted. To facilitate mixing and reaction in the micro-chambers, two acoustic microstreaming actuation mechanisms have been investigated for easy integratability and accessibility. Furthermore, the microfluidic dilution generator has been characterized by both colorimetric and fluorescent means. A further demonstration of the generic usage of the quantitative dilution chip has utilized a commonly available bicinchoninic acid (BCA) assay to analyse protein concentrations of human tissue extracts. In brief, the microfluidic dilution generator offers a high-throughput high-efficiency quantitative analytical alternative to the conventional quantitative assay platforms, by simple manipulation of a minute amount of chemicals in a compact microfluidic device with a minimal equipment requirement, which can serve as a facile tool for biochemical and biological analyses in regular laboratories, point-of-care and low-resource environments.

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Mechanisms and factors influencing the ultrasonic cleaning of particle-fouled ceramic membranes

Cited by 40 publications

References 0 publications

Assisted ultrasound applications for the production of safe foods

Assisted ultrasound applications for the production of safe foods

Separation of Sulfoether Compounds in Garlic Oil by Integrated Membrane Technologies

Reconfigurable microfluidic dilution for high-throughput quantitative assays

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