Application of ultrafiltration to apple juice clarification
Primena ultrafiltracije za bistrenje soka jabuke
Apstrakt
Raw depectinized apple juice was clarified in a laboratory scale ultrafiltration (UF) system using ceramic tubular membranes (Tech-Sep Carbosep) with a molecular weight cut-off of 300,000, 50,000, and 30,000 daltons. The experiments have been carried out over a wide range of transmembrane pressures (100-400 kPa), temperatures (293-328 K), and feed flow rates (100-900 mL/min). Permeate flux significantly decreased with time until a steady state was established. The steady-state permeate flux reached a maximum at a transmembrane pressure of about 200 kPa. Higher permeate flux was obtained at higher temperatures due to lower permeate viscosity. A linear relationship between steady-state permeate flux and feed flow rate in logarithmic coordinates was obtained and the slope of these lines ranged from 0.22 to 0.31.
Bistrenje depektinizovanog matičnog soka jabuke uspešno je vršeno ultrafiltracijom kroz keramičke cevne membrane proizvedene od cirkonijum-oksida i titan-dioksida na podlozi od poroznog ugljenika. Eksperimenti su vršeni uz potpunu recirkulaciju retentata i sa protocima napojne struje u modulu od 100-900 ml/min. Fluks permeata u početku opada sa vremenom, ali se posle određenog vremena uspostavlja stacionarno stanje. Stacionami fluks permeata, L dostiže maksimum pri transmembranskom pritisku od oko 200 kPa, nakon čega opada sa daljim porastom pritiska. To se može objasniti deformacijom čestica mutnoće u sloju gela, raskidanjem krupnijih lančastih agregata otvorene strukture i formiranjem sitnijih čestica koje se gušće pakuju u sloju gela, što dovodi do smanjenja poroznosti i propustljivosti sloja. U log-log koordinatnom sistemu stacionami fluks permeata linearno raste sa porastom protoka napojnog soka, pri čemu nagib ovih pravih varira od 0,22 do 0,31.
Ključne reči:
ultrafiltration / apple juice / clarification / ceramic membrane / permeate fluxIzvor:
Journal of Agricultural Sciences (Belgrade), 2000, 45, 2, 121-130Izdavač:
- Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd
Institucija/grupa
Poljoprivredni fakultetTY - JOUR AU - Vladisavljević, Goran AU - Vukosavljević, Predrag AU - Bukvić, Branka AU - Zlatković, Branislav PY - 2000 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/208 AB - Raw depectinized apple juice was clarified in a laboratory scale ultrafiltration (UF) system using ceramic tubular membranes (Tech-Sep Carbosep) with a molecular weight cut-off of 300,000, 50,000, and 30,000 daltons. The experiments have been carried out over a wide range of transmembrane pressures (100-400 kPa), temperatures (293-328 K), and feed flow rates (100-900 mL/min). Permeate flux significantly decreased with time until a steady state was established. The steady-state permeate flux reached a maximum at a transmembrane pressure of about 200 kPa. Higher permeate flux was obtained at higher temperatures due to lower permeate viscosity. A linear relationship between steady-state permeate flux and feed flow rate in logarithmic coordinates was obtained and the slope of these lines ranged from 0.22 to 0.31. AB - Bistrenje depektinizovanog matičnog soka jabuke uspešno je vršeno ultrafiltracijom kroz keramičke cevne membrane proizvedene od cirkonijum-oksida i titan-dioksida na podlozi od poroznog ugljenika. Eksperimenti su vršeni uz potpunu recirkulaciju retentata i sa protocima napojne struje u modulu od 100-900 ml/min. Fluks permeata u početku opada sa vremenom, ali se posle određenog vremena uspostavlja stacionarno stanje. Stacionami fluks permeata, L dostiže maksimum pri transmembranskom pritisku od oko 200 kPa, nakon čega opada sa daljim porastom pritiska. To se može objasniti deformacijom čestica mutnoće u sloju gela, raskidanjem krupnijih lančastih agregata otvorene strukture i formiranjem sitnijih čestica koje se gušće pakuju u sloju gela, što dovodi do smanjenja poroznosti i propustljivosti sloja. U log-log koordinatnom sistemu stacionami fluks permeata linearno raste sa porastom protoka napojnog soka, pri čemu nagib ovih pravih varira od 0,22 do 0,31. PB - Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd T2 - Journal of Agricultural Sciences (Belgrade) T1 - Application of ultrafiltration to apple juice clarification T1 - Primena ultrafiltracije za bistrenje soka jabuke EP - 130 IS - 2 SP - 121 VL - 45 UR - https://hdl.handle.net/21.15107/rcub_agrospace_208 ER -
@article{ author = "Vladisavljević, Goran and Vukosavljević, Predrag and Bukvić, Branka and Zlatković, Branislav", year = "2000", abstract = "Raw depectinized apple juice was clarified in a laboratory scale ultrafiltration (UF) system using ceramic tubular membranes (Tech-Sep Carbosep) with a molecular weight cut-off of 300,000, 50,000, and 30,000 daltons. The experiments have been carried out over a wide range of transmembrane pressures (100-400 kPa), temperatures (293-328 K), and feed flow rates (100-900 mL/min). Permeate flux significantly decreased with time until a steady state was established. The steady-state permeate flux reached a maximum at a transmembrane pressure of about 200 kPa. Higher permeate flux was obtained at higher temperatures due to lower permeate viscosity. A linear relationship between steady-state permeate flux and feed flow rate in logarithmic coordinates was obtained and the slope of these lines ranged from 0.22 to 0.31., Bistrenje depektinizovanog matičnog soka jabuke uspešno je vršeno ultrafiltracijom kroz keramičke cevne membrane proizvedene od cirkonijum-oksida i titan-dioksida na podlozi od poroznog ugljenika. Eksperimenti su vršeni uz potpunu recirkulaciju retentata i sa protocima napojne struje u modulu od 100-900 ml/min. Fluks permeata u početku opada sa vremenom, ali se posle određenog vremena uspostavlja stacionarno stanje. Stacionami fluks permeata, L dostiže maksimum pri transmembranskom pritisku od oko 200 kPa, nakon čega opada sa daljim porastom pritiska. To se može objasniti deformacijom čestica mutnoće u sloju gela, raskidanjem krupnijih lančastih agregata otvorene strukture i formiranjem sitnijih čestica koje se gušće pakuju u sloju gela, što dovodi do smanjenja poroznosti i propustljivosti sloja. U log-log koordinatnom sistemu stacionami fluks permeata linearno raste sa porastom protoka napojnog soka, pri čemu nagib ovih pravih varira od 0,22 do 0,31.", publisher = "Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd", journal = "Journal of Agricultural Sciences (Belgrade)", title = "Application of ultrafiltration to apple juice clarification, Primena ultrafiltracije za bistrenje soka jabuke", pages = "130-121", number = "2", volume = "45", url = "https://hdl.handle.net/21.15107/rcub_agrospace_208" }
Vladisavljević, G., Vukosavljević, P., Bukvić, B.,& Zlatković, B.. (2000). Application of ultrafiltration to apple juice clarification. in Journal of Agricultural Sciences (Belgrade) Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd., 45(2), 121-130. https://hdl.handle.net/21.15107/rcub_agrospace_208
Vladisavljević G, Vukosavljević P, Bukvić B, Zlatković B. Application of ultrafiltration to apple juice clarification. in Journal of Agricultural Sciences (Belgrade). 2000;45(2):121-130. https://hdl.handle.net/21.15107/rcub_agrospace_208 .
Vladisavljević, Goran, Vukosavljević, Predrag, Bukvić, Branka, Zlatković, Branislav, "Application of ultrafiltration to apple juice clarification" in Journal of Agricultural Sciences (Belgrade), 45, no. 2 (2000):121-130, https://hdl.handle.net/21.15107/rcub_agrospace_208 .