Micellar-enhanced ultrafiltration for simultaneous removal of ferricyanide and nitrate

Baek, Kitae; Lee, Hyun-Ho; Yang, Ji‐Won

doi:10.1016/s0011-9164(03)00446-6

Cited by 52 publications

(37 citation statements)

References 9 publications

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“…Surfactants have mainly been studied in the context of micellar enhanced UF, where a surfactant is added to the feed, which is later removed in form of micelles containing the pollutant [34,35]. Only very few fouling studies can be found [36,37] and Archer et al [37] found an increase in flux in the critical micelle concentration (cmc) region during NF of an anionic surfactant.…”

Section: Ultrafiltration Membrane Foulingmentioning

confidence: 99%

Bisphenol A retention in the direct ultrafiltration of greywater

Schäfer

Nghiem

Oschmann

2006

Journal of Membrane Science

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Decentralised treatment is an increasing trend in the attempts to manage water more wisely in light of water restrictions, overconsumption and drought. Greywater is a fraction of household wastewater that offers the potential to be treated locally to be reused for garden irrigation, car washing and toilet flushing. In this paper the performance of submerged and direct ultrafiltration (UF) of synthetic greywater is investigated with regards to organic trace contaminant, namely Bisphenol A (BPA), and fouling. The synthetic greywater solution consisted of inorganic particulates (kaolin), organic fibres (cellulose), protein (casein), surfactant (sodium dodecyl sulphate, SDS), humic acid (HA), calcium, sodium chloride electrolyte and sodium bicarbonate buffer.Results indicate that UF can remove 30-45% of BPA. This removal is attributed to partitioning of the compound to the membrane material, suspended and dissolved solids as well as the fouling layer. Humic acid and calcium were the main contributors to fouling, which also affected BPA retention. Fouling increased with an increase in HA concentration, which calcium contributed most to fouling at a concentration of about 0.5 mM. At higher concentration of calcium aggregation appeared to reduce fouling significantly.The implications of this study are that trace contaminant-solute interactions play an important role for retention potential and this relationship offers room for optimization by selecting particulate additives with a high affinity for target compounds. This is of particular importance if such contaminants are a concern (which is dependent on the product water application) and in the absence of biological treatment which is in this case not desired. The separation of greywater into fractions of low and high strength is of advantage if this can eliminate the presence of humic substances.

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Section: Ultrafiltration Membrane Foulingmentioning

confidence: 99%

Bisphenol A retention in the direct ultrafiltration of greywater

Schäfer

Nghiem

Oschmann

2006

Journal of Membrane Science

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“…Ultrafiltration (UF) and micellar enhanced ultrafiltration (MEUF) which fall in this category have been studied extensively to improve both the selectivity and the flux in the removal of these substances [7][8][9][10][11][12][13][14][15][16][17]. Surface active agents which are invariably co-present with the LMWCs in contaminated waters, or added intentionally as part of the ultrafiltration process, may interfere with separation.…”

Section: Introductionmentioning

confidence: 99%

Ancillary effects of surfactants on filtration of low molecular weight contaminants through cellulose nitrate membrane filters

Olcay

Polat

2016

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…In this case, the modified ultrafiltration membrane separation which is micellar-enhanced ultrafiltration (MEUF) had been used to treat dye effluent. This method combines the high selectivity of reverse osmosis and the high flux of ultrafiltration [9]. As shown in Fig.…”

Section: Introductionmentioning

confidence: 99%