Effect of Membrane Degummıng Condıtıons on Permeate Flux and Phospholıpıds Rejectıon
Küçük Resim Yok
Tarih
2017
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Bu çalışmanın amacı; ters osmos/ ultrafiltrasyon modülü kullanılarak soya yağına uygulanan degummingişleminde polivinilden fulorid (PVDF) membranın performansının araştırılmasıdır. Membran degummingişlem koşullarının (sıcaklık, membran basıncı, besleme hızı, hacimsel konsantrasyon faktörü) permeatakısı ve fosfolipitlerin reddedilme yüzdesi üzerindeki etkisi istatistiksel olarak incelenmiştir. Membranbasıncının ve hacimsel konsantrasyon faktörünün permeat akısı üzerindeki etkisi istatistiksel olarakönemli bulunmuştur (P <0.05). Membran sıcaklığının 40°C, membran basıncının 20 bar ve besleme hızının9L/dak olduğu koşullarda fosfolipitlerin reddedilme yüzdesi 86.11, tüm işlemde ortalama permeat akısıise 17.04 L/m2.s olarak belirlenmiştir. Besleme hızının 18L/dak değerine yükselmesi ile fosfolipitlerinreddedilme yüzdesi 82.81, ortalama permeat akısı ise 27.51L/m2.s olarak saptanmıştır. Ayrıca PVDFmembranın akı davranışı da incelenmiştir. Permeat akısının işlem süresi ile değişimi; akının sürekli düşmegösterdiği birinci bölge ve akının sabit kaldığı ikinci bölge olmak üzere iki bölgede tanımlanmıştır.Düşen akı bölgesi 2. dereceden polinomiyal, sabit akı bölgesi doğrusal, tüm işlem için logaritmik modelgeliştirilmiştir
The objective of this study was to investigate the performance of PVDF membrane in degumming ofundiluted crude soybean oil by using reverse osmosis/ultrafiltration module. the effects of membranedegumming conditions including temperature, membrane pressure, feed velocity, and volumetricconcentration factor on permeate flux and phospholipids rejection were evaluated statistically. Theeffect of membrane pressure and volumetric concentration factor on the permeate flux was found to bestatistically significant (P <0.05). An 86.11% rejection of phospholipids and average permeate flux of17.04 L/m2.h in total process were achieved at 40°C, 20 bar pressure, and 9L/min feed velocity. As thefeed velocity increased to 18 L/min, phospholipids rejection and average permeate flux in total processwere determined as 82.81% and 27.51 L/m2.h, respectively. the flux behavior of PVDF membrane wasalso studied. Behavior of permeate flux with process time showed two separate regions namely; fallingpermeate flux region and constant permeate flux region. A second degree polynomial relationship wasobserved during falling permeate flux region; whereas a linear dependency was set for constantpermeate flux region. A logarithmic equation was obtained when total process behavior was examined
The objective of this study was to investigate the performance of PVDF membrane in degumming ofundiluted crude soybean oil by using reverse osmosis/ultrafiltration module. the effects of membranedegumming conditions including temperature, membrane pressure, feed velocity, and volumetricconcentration factor on permeate flux and phospholipids rejection were evaluated statistically. Theeffect of membrane pressure and volumetric concentration factor on the permeate flux was found to bestatistically significant (P <0.05). An 86.11% rejection of phospholipids and average permeate flux of17.04 L/m2.h in total process were achieved at 40°C, 20 bar pressure, and 9L/min feed velocity. As thefeed velocity increased to 18 L/min, phospholipids rejection and average permeate flux in total processwere determined as 82.81% and 27.51 L/m2.h, respectively. the flux behavior of PVDF membrane wasalso studied. Behavior of permeate flux with process time showed two separate regions namely; fallingpermeate flux region and constant permeate flux region. A second degree polynomial relationship wasobserved during falling permeate flux region; whereas a linear dependency was set for constantpermeate flux region. A logarithmic equation was obtained when total process behavior was examined
Açıklama
Anahtar Kelimeler
Gıda Bilimi ve Teknolojisi
Kaynak
GIDA
WoS Q Değeri
Scopus Q Değeri
Cilt
42
Sayı
5
