The Effect of Stirring Speed of Zinc Ions Transport Through Bulk Liquid Membrane Containing Di-2-ethylhexyl Phosphoric Acid (D2EHPA) in Kerosene

Year 2018, , 67 - 75, 30.12.2018

Züleyha Bingül

https://doi.org/10.21597/jist.443011

Abstract

In this study, the effect of carrier and donor phase stirring speed on the coupled transport of zinc ions

through bulk liquid membrane was investigated. As carrier, di-2-ethylhexyl phosphoric acid dissolved in kerosene

was used. In experiments, the stirring speed of the donor phase was kept constant at 100 rpm while the stirring

speed of the acceptor phase was changed to 100, 200, 300 and 450 rpm. The results obtained show that zinc ions

in the donor phase decrease mono-exponentially with time, while in the acceptor phase it increases. It has been

determined that the rate of removal of zinc ions increases with increasing stirring speed, but at very high stirring

speeds, the organic solvent is dispersed as emulsion particles in the donor and acceptor phases.

Keywords

D2EHPA, Bulk liquid membrane, coupled transport, stirring speed, wastewater treatment, zinc removal

Kerozende Di-2-etilhekzil Fosforik Asit İçeren Bulk Sıvı Membranla Çinko İyonlarının Taşınımına Karıştırma Hızının Etkisi

Abstract

Bu çalışmada, sıvı membran prosesiyle çinko iyonlarının çift yönlü taşınımına taşıyıcı ve verici faz

karıştırma hızlarının etkisi incelenmiştir. Taşıyıcı olarak kerozende çözünmüş di-2-etilhekzil fosforik asit

kullanılmıştır. Denemelerde verici faz karıştırma hızı 100 rpm’de sabit tutulurken yakalayıcı faz karıştırma hızı 100,

200, 300 ve 450 rpm olarak değiştirilmiştir. Elde edilen sonuçlar çalışılan karıştırma hızlarında verici fazdaki çinko

iyonlarının zamanla tek üssel logaritmik eğri verecek şekilde azaldığını, yakalayıcı fazda ise arttığını göstermiştir.

Denemelerde karıştırma hızının artmasıyla çinko iyonlarının giderim hızının arttığı, ancak çok yüksek karıştırma

hızlarında organik çözücünün verici ve yakalayıcı fazlar içerisinde emülsiyon zerrecikleri şeklinde dağıldığı tespit

edilmiştir.

Keywords

Atıksu arıtımı, bulk sıvı membran, çift yönlü taşınım, çinko giderimi, D2EHPA, karıştırma hızı

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