Unstable secondary oil/water emulsion treatment using ultrafiltration: fouling control by backflushing

Srijaroonrat, Piyarat; Julien, E.; Aurelle, Y.

doi:10.1016/s0376-7388(99)00044-7

Cited by 156 publications

(81 citation statements)

References 7 publications

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“…[94][95][96] Employing ceramic filtration membranes for oily wastewater treatment is also studied and reported by some researchers. [96][97][98][99][100][101][102][103][104][105][106][107][108][109] Because of the limitation of their pore sizes, directly employing ceramic membranes for the separation of emulsified oil/water mixtures would cause severe fouling problem and low fluxes. 99,104,108 Among the various ceramic filtration membranes, zirconia ceramic membranes exhibit better performance than others for oily wastewater treatment.…”

Section: Ceramic Filtration Membranesmentioning

confidence: 99%

Recent progress in developing advanced membranes for emulsified oil/water separation

2014

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The separation of oily wastewater, especially emulsified oil/water mixtures, is a worldwide challenge because of the large amount of oily wastewater produced in many industrial processes and daily life. For the treatment of oily wastewater, membrane technology is considered the most efficient method because of its high separation efficiency and relatively simple operational process. In this short review, the recent development of advanced filtration membranes for emulsified oil/water mixture separation is presented. We provide an overview on both traditional filtration membranes, including polymer-dominated and ceramic-based filtration membranes, and recently developed nanomaterial-based functional filtration membranes, especially one-dimensional nanomaterials, for effectively treating emulsified oil/water mixtures. The liquid flux and antifouling property, which are the most important factors for membrane performance evaluation, are described for different types of membranes. Conclusions and perspectives concerning the future development of filtration membranes are also provided.

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Section: Ceramic Filtration Membranesmentioning

confidence: 99%

Recent progress in developing advanced membranes for emulsified oil/water separation

2014

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“…Scholars reported the existence of several studies using MSP for the treatment of oily waste, including in the form of stable emulsions, most focusing on the use of ultrafiltration (UF) and microfiltration (MF) membranes in rejection of the oil droplets. In this study the drops of oil are completely rejected and the continuous phase is permeated [9][10][11] . The phase inversion method is used to obtain polymeric membranes which are produced by precipitation from a polymer solution, allowing morphological modification from changes made in the parameters used during the membranes preparation 12 .…”

Section: Introductionmentioning

confidence: 99%

Hybrid Membranes of Polyamide Applied in Treatment of Waste Water

et al. 2017

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In this work, it was prepared hybrid membranes of polyamide6 (PA6) with montmorillonite (MMT) and porogenic agent (CaCl 2 ). The hybrid membranes with CaCl 2 were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), porosimetry by mercury intrusion (PMI), flux measurements and rejection. By means of X-ray diffraction, it was revealed that the hybrid membranes with CaCl 2 have an exfoliated and/or partially exfoliated structure. For FTIR and DSC of hybrid membranes with CaCl 2 , it was found that the spectra and the crystalline melting temperature remained virtually unchanged compared to PA6 membrane. From the SEM images, it was observed that the addition of the MMT and the CaCl 2 in the membrane of PA6 caused an increase in the amount of pores the surface and cross section of these membranes. By PMI, it was observed that the presence of MMT and CaCl 2 in the membrane caused an increase in the average diameters of pores. The water-oil separation tests, indicated a significant reduction of oil in the permeate, allowing treatment of wastewater contaminated with oil.

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“…Typically, backpulsing is used with a relatively high frequency, ranging from every second (Levesley and Hoare 1999) to every minute (Srijaroonrat et al 1999). However, the expected frequency for backpulsing in the WTP crossflow filters ranges from every hour to every 12 hours.…”

Section: Pnnl Efforts To Model Flux Time Dependencementioning

confidence: 99%

A Brief Review of Filtration Studies for Waste Treatment at the Hanford Site

Daniel¹,

Schonewill²,

Shimskey³

et al. 2010

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SummaryThis document completes the requirements of Milestone 1-2, PNNL Draft Literature Review, discussed in the scope of work outlined in the EM-31 Support Project task plan WP-2.3.6-2010-1. The focus of task WP-2.3.6 is to improve the U.S. Department of Energy's (DOE's) understanding of filtration operations for high-level waste (HLW) to enhance filtration and cleaning efficiencies, thereby increasing process throughput and reducing the sodium demand (through acid neutralization). Developing the processes for fulfilling the cleaning/backpulsing requirements will result in more efficient operations for both the Hanford Tank Waste Treatment and Immobilization Plant (WTP) and the Savannah River Site (SRS), thereby increasing throughput by limiting cleaning cycles.The purpose of this document is to summarize Pacific Northwest National Laboratory's (PNNL's) literature review of historical filtration testing at the laboratory and of testing found in peer-reviewed journals. Eventually, the contents of this document will be merged with a literature review by SRS to produce a summary report for DOE of the results of previous filtration testing at the laboratories and the types of testing that still need to be completed to address the questions about improved filtration performance at WTP and SRS. To this end, this report presents 1) a review of the current state of crossflow filtration knowledge available in the peer-reviewed literature, 2) a detailed review of PNNLrelated filtration studies specific to the Hanford site, and 3) an overview of current waste filtration models developed by PNNL and suggested avenues for future model development.This extensive review provides a starting point to help achieve the ultimate goal of the current project, which is to identify technologies such as modifications to the process (e.g., reconfiguration of the filter geometry or changes to operational techniques) or the use of physical property modifiers that increase the sustainability of the filter process. Overall, two avenues of future model development are recommended: 1) determination of long-term filtration dynamics of actual waste and waste simulant slurries and 2) evaluation of the impact of solution chemistry on the rate of filtration and filter fouling. A better understanding of these long-term fouling dynamics and solution chemistry effects will help in developing better predictive models and improved process optimization.v

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Unstable secondary oil/water emulsion treatment using ultrafiltration: fouling control by backflushing

Cited by 156 publications

References 7 publications

Recent progress in developing advanced membranes for emulsified oil/water separation

Recent progress in developing advanced membranes for emulsified oil/water separation

Hybrid Membranes of Polyamide Applied in Treatment of Waste Water

A Brief Review of Filtration Studies for Waste Treatment at the Hanford Site

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