Black tea liquor ultrafiltration: effect of ethanol pre-treatment upon fouling and cleaning characteristics

Iain Argyle; Arto Pihlajamӓki; Michael Bird

doi:10.1016/j.fbp.2014.10.010

Black tea liquor ultrafiltration: effect of ethanol pre-treatment upon fouling and cleaning characteristics

Iain Argyle, Arto Pihlajamӓki, Michael Bird

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Abstract

tThis paper reports on the use of polymeric ultrafiltration (UF) membrane ethanol pre-treatment as a strategy toimprove filtration performance in terms of both flux increase, and membrane water flux recovery following cleaning.A 4-fold pure water flux (PWF) increase was observed for a 100 kDa polysulfone membrane. Marked increases inpermeate flux were recorded for ethanol treated UF membranes over a range of molecular weight cut-off values.Ethanol treatment also aided fluxes over multiple foul-clean cycles, and enabled the enhanced transmission ofpolyphenols during UF for the clarification of black tea liquor. Following tea fouling and NaOH cleaning repetitions,PWF values of treated membranes were returned to values of >150% of the untreated virgin membrane PWF over4/5 consecutive cycles, indicating that the ethanol pre-treatment strategy adopted had a prolonged effect uponsubsequent performance.

Original language	English
Pages (from-to)	289 - 297
Number of pages	9
Journal	Transactions of the Institution of Chemical Engineers Part C: Food and Bioproducts Processing
Volume	93
Early online date	24 Oct 2014
DOIs	https://doi.org/10.1016/j.fbp.2014.10.010
Publication status	Published - Jan 2015

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10.1016/j.fbp.2014.10.010

Argyle Pihlajamaki and Bird_final version
Published version available online via: http://dx.doi.org/10.1016/j.fbp.2014.10.010
Accepted author manuscript, 183 KBLicence: CC BY-NC-ND

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title = "Black tea liquor ultrafiltration: effect of ethanol pre-treatment upon fouling and cleaning characteristics",

abstract = "tThis paper reports on the use of polymeric ultrafiltration (UF) membrane ethanol pre-treatment as a strategy toimprove filtration performance in terms of both flux increase, and membrane water flux recovery following cleaning.A 4-fold pure water flux (PWF) increase was observed for a 100 kDa polysulfone membrane. Marked increases inpermeate flux were recorded for ethanol treated UF membranes over a range of molecular weight cut-off values.Ethanol treatment also aided fluxes over multiple foul-clean cycles, and enabled the enhanced transmission ofpolyphenols during UF for the clarification of black tea liquor. Following tea fouling and NaOH cleaning repetitions,PWF values of treated membranes were returned to values of >150% of the untreated virgin membrane PWF over4/5 consecutive cycles, indicating that the ethanol pre-treatment strategy adopted had a prolonged effect uponsubsequent performance.",

author = "Iain Argyle and Arto Pihlajamӓki and Michael Bird",

year = "2015",

month = jan,

doi = "10.1016/j.fbp.2014.10.010",

language = "English",

volume = "93",

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T1 - Black tea liquor ultrafiltration

T2 - effect of ethanol pre-treatment upon fouling and cleaning characteristics

AU - Argyle, Iain

AU - Pihlajamӓki, Arto

AU - Bird, Michael

PY - 2015/1

Y1 - 2015/1

N2 - tThis paper reports on the use of polymeric ultrafiltration (UF) membrane ethanol pre-treatment as a strategy toimprove filtration performance in terms of both flux increase, and membrane water flux recovery following cleaning.A 4-fold pure water flux (PWF) increase was observed for a 100 kDa polysulfone membrane. Marked increases inpermeate flux were recorded for ethanol treated UF membranes over a range of molecular weight cut-off values.Ethanol treatment also aided fluxes over multiple foul-clean cycles, and enabled the enhanced transmission ofpolyphenols during UF for the clarification of black tea liquor. Following tea fouling and NaOH cleaning repetitions,PWF values of treated membranes were returned to values of >150% of the untreated virgin membrane PWF over4/5 consecutive cycles, indicating that the ethanol pre-treatment strategy adopted had a prolonged effect uponsubsequent performance.

AB - tThis paper reports on the use of polymeric ultrafiltration (UF) membrane ethanol pre-treatment as a strategy toimprove filtration performance in terms of both flux increase, and membrane water flux recovery following cleaning.A 4-fold pure water flux (PWF) increase was observed for a 100 kDa polysulfone membrane. Marked increases inpermeate flux were recorded for ethanol treated UF membranes over a range of molecular weight cut-off values.Ethanol treatment also aided fluxes over multiple foul-clean cycles, and enabled the enhanced transmission ofpolyphenols during UF for the clarification of black tea liquor. Following tea fouling and NaOH cleaning repetitions,PWF values of treated membranes were returned to values of >150% of the untreated virgin membrane PWF over4/5 consecutive cycles, indicating that the ethanol pre-treatment strategy adopted had a prolonged effect uponsubsequent performance.

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U2 - 10.1016/j.fbp.2014.10.010

DO - 10.1016/j.fbp.2014.10.010

M3 - Article

SN - 0960-3085

VL - 93

SP - 289

EP - 297

JO - Food and Bioproducts Processing

JF - Food and Bioproducts Processing

ER -

Black tea liquor ultrafiltration: effect of ethanol pre-treatment upon fouling and cleaning characteristics

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