The influence of aggregation of latex particles on membrane fouling attachments &amp; ultrafiltration performance in ultrafiltration of latex contaminated water and wastewater

Abdelrasoul, Amira; Doan, Huu; Lohi, Ali; Cheng, Chil‐Hung

doi:10.1016/j.jes.2016.03.023

Cited by 18 publications

(8 citation statements)

References 24 publications

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“…One of the primary advantages is that the size and shape of NPs retained on the filter may be maintained, allowing for subsequent identification and measurement. Membrane fouling, on the other hand, would significantly slow down the filtration process when the pore size is in the nm range [21,22] and the possibility of damaging pore structures would significantly reduce the amount of valid samples that can be filtered. Typically, the cost of membranes with smaller pore sizes of the same materials is much greater, which precludes the analysis of large volume samples.…”

Section: Membrane Filtrationmentioning

confidence: 99%

New Analytical Approaches for Effective Quantification and Identification of Nanoplastics in Environmental Samples

et al. 2021

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Nanoplastics (NPs) are a rapidly developing subject that is relevant in environmental and food research, as well as in human toxicity, among other fields. NPs have recently been recognized as one of the least studied types of marine litter, but potentially one of the most hazardous. Several studies are now being reported on NPs in the environment including surface water and coast, snow, soil and in personal care products. However, the extent of contamination remains largely unknown due to fundamental challenges associated with isolation and analysis, and therefore, a methodological gap exists. This article summarizes the progress in environmental NPs analysis and makes a critical assessment of whether methods from nanoparticles analysis could be adopted to bridge the methodological gap. This review discussed the sample preparation and preconcentration protocol for NPs analysis and also examines the most appropriate approaches available at the moment, ranging from physical to chemical. This study also discusses the difficulties associated with improving existing methods and developing new ones. Although microscopical techniques are one of the most often used ways for imaging and thus quantification, they have the drawback of producing partial findings as they can be easily mixed up as biomolecules. At the moment, the combination of chemical analysis (i.e., spectroscopy) and newly developed alternative methods overcomes this limitation. In general, multiple analytical methods used in combination are likely to be needed to correctly detect and fully quantify NPs in environmental samples.

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Section: Membrane Filtrationmentioning

confidence: 99%

New Analytical Approaches for Effective Quantification and Identification of Nanoplastics in Environmental Samples

et al. 2021

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“…In-depth understanding of fouling phenomenon mechanisms is vital for the advancement of innovative methods for the control of fouling and cleaning of membranes. Membrane fouling is a complex process since it involves chemical and physical interactions between various foulants as well as between the membrane's surface and foulants [10][11][12]. Membrane fouling reduces the active area of the membrane, blocks the membrane pores, or increases the resistance to the flow though the membrane and hence directly contributes to a declined in the permeate flux and an increased transmembrane pressure, which in turn results in an increase in the power consumption [13,14].…”

Section: Overview Of Membrane Fouling Mechanismsmentioning

confidence: 99%

“…Biofouling is caused by the deposition, growth, and metabolism of microbiological cells (bacteria, algae, protozoa, and fungi) or flocs, in conjunction with the production of biofilm on the membrane. Biofouling poses a serious operational problem in membrane-based processes and is a contributing factor to >45% of all membrane fouling [10]. Biofouling begins as an attachment of microbiological cells to the membrane surface, which then causes the formation of biofilm.…”

Section: Biofoulingmentioning

confidence: 99%

“…Physical cleaning includes periodic rinsing (backwashing and flushing), which consists of passing water through the membrane in the reverse direction of the permeate flux. Backwash with air can also be applied to remove particles through surface shear and increase in mass transferring motion, but it is not compatible to all types of feed solution [7][8][9][10]. Another physical technique is the use of pulsed electric or ultrasonic fields during the filtration process to avoid particle deposition [7,8].…”

Section: Biofoulingmentioning

confidence: 99%

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Ultrasound for Membrane Fouling Control in Wastewater Treatment and Protein Purification Downstream Processing Applications

Abdelrasoul¹,

Doan²

2020

Advances in Membrane Technologies

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Membrane fouling is one of the major issues encountered in membrane filtration including microfiltration, ultrafiltration, nanofiltration, and reverse osmosis. Membrane fouling can occur due to the reversible and irreversible deposition of particles, colloids, macromolecules, salts, and other types of elements. As a consequence, fouling causes a significant decrease in the permeate flux due to plugging of membrane pores, and adsorption of fouling material on the membrane's surface and/or in the pore walls. A lot of research efforts have been directed towards fouling remediation techniques or membrane cleaning alternatives. Although most of these methods are relatively functional, they have drawbacks and limitations. Among these methods, the use of ultrasound has been shown to be effective in enhancing mass transfer, cleaning, disinfection, and controlling fouling. In membrane filtration processes, ultrasound can help accelerating the permeate flux towards the membrane and decreasing the concentration of solutes accumulated in the membrane pores and on the membrane surfaces. Ultrasonic fouling control does not require chemical cleaning and can maintain a high permeate flux throughout the filtration process. In addition, wastewater contaminants can be degraded by ultrasound. Therefore, ultrasound creates unique physicochemical conditions, which can be used as an effective tool for membrane fouling control. In this chapter, ultrasound radiation as a unique method to modify physical and chemical properties of a complex fluid with applications in wastewater treatment and protein purification process is highlighted. At first, ultrasonic parameters and how their ability to enhance the delivery of fluid flow to the membrane surface and affect the physical and chemical properties of foulants are discussed. Furthermore, various ultrasonic methods, including continuous and intermittent waves, and its influences on membrane fouling, permeate flux, membrane cleaning and flux recovery are reviewed. The main role of wave streaming as a driving force for fluid acceleration and antifouling control, and the impact of ultrasound-generated bubble cavitation on preventing and removing fouling deposits are described. The challenges of current ultrasonic techniques, which need to be addressed so as to facilitate their widespread and successful implementation, are explored. This chapter examines how the periodic compression/ rarefaction cycles of ultrasound can influence mass transfer and membrane fouling. Also, the current knowledge and approaches to advance ultrasonic technology as an Advances in Membrane Technologies 2 effective method for membrane fouling remediation in wastewater treatment and protein purification downstream processing are presented in this chapter.

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“…To study the fouling mechanisms, researchers have examined the impacts of various factors on membrane performance. Abdelrasoul et al (2017) examined the impact of aggregation of latex particles on membrane fouling and UF performance in UF of latex contaminated water and wastewater. They found that the particle size distribution of treated latex effluent significantly shifted towards a larger size range due to the aggregation of Water Environment Research, Volume 90, Number 10 -Copyright © 2018 Water Environment Federation particles.…”

mentioning

confidence: 99%

Physico‐Chemical Processes

Xue

Guo

Gong

2018

Water Environment Research

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This review covers research articles published in 2017 on topics relating to physico-chemical processes for water and wastewater treatment. The paper divides into nine sections, i. e., membrane technology, ion exchange, capacitive deionization, granular filtration, coagulation/flocculation, sedimentation, flotation, oxidation and adsorption. The membrane technology part includes six parts, including microfiltration (MF), ultrafiltration (UF), nanofiltration (NF), reverse osmosis (RO), forward osmosis (FO), and membrane distillation (MD).

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The influence of aggregation of latex particles on membrane fouling attachments & ultrafiltration performance in ultrafiltration of latex contaminated water and wastewater

Cited by 18 publications

References 24 publications

New Analytical Approaches for Effective Quantification and Identification of Nanoplastics in Environmental Samples

New Analytical Approaches for Effective Quantification and Identification of Nanoplastics in Environmental Samples

Ultrasound for Membrane Fouling Control in Wastewater Treatment and Protein Purification Downstream Processing Applications

Physico‐Chemical Processes

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