ZEYTİN KARASUYU FENOLİK BİRLEŞİKLERİNİN OHMİK, MİKRODALGA VE ULTRASON DESTEKLİ EKSTRAKSİYONU ve KİNETİK MODELLEMESİ

Öz

Bu çalışmanın amacı, zeytinyağı proses atığı olan karasuyundaki fenolik maddelerin bertaraf edilmesi için ekstraksiyon sistemlerinin kıyaslanmasıdır. Ayrıca çalışmanın bir diğer amacı derin ötektik çözgen (DÖÇ: kolin klorür:formik asit (1:2, n:n)) kullanılarak ohmik, mikrodalga ve ultrason destekli ekstraksiyon sistemi ile fenolik bileşiklerinin ekstraksiyonu ve kinetik modellenmesidir. Çalışmada, dört farklı ekstraksiyon tekniği (ohmik, mikrodalga, ultrason ve maserasyon) ve ekstraksiyon çeşidine göre değişen farklı işlem süreleri kullanılarak kolin klorür:formik asit (1:2, n:n) ve su karışımı (1:1, v:v) ile 1:5 (m:v) karasu:solvent oranında ekstraksiyon işlemi gerçekleştirilmiştir. Bağımlı değişken olarak toplam fenolik madde miktarı belirlenmiştir. En yüksek toplam fenolik madde miktarına (24.25±1.19 mg GAE/g karasu) mikrodalga (270 W güçte) destekli ekstraksiyon işleminde ve 80 dakikada ulaşılmıştır. Ek olarak modelleme sonucunda fenolik madde değişiminin Peleg modeline uyum gösterdiği görülmüştür. En yüksek B0 ve Cmax değerleri sırasıyla ohmik destekli ekstraksiyon işlemi ve mikrodalga destekli ekstraksiyon işleminde tespit edilmiştir.

Anahtar Kelimeler

• Ohmik
• mikrodalga
• ultrason
• DÖÇ
• karasu
• fenolik bileşik
• kinetik modelleme

KINETIC MODELLING OF OHMIC, MICROWAVE AND ULTRASOUND ASSISTED EXTRACTIONS OF PHENOLIC COMPOUNDS FROM OLIVE MILL WASTE WATER

Öz

The aim of the study is to compare different extraction systems for the removal of phenolic compounds from olivemill wastewater. Besides, the another aim of the study is kinetic modelling and extraction of phenolics using DES (DES: choline cloride:formic acid (1:2, n:n). In the study, different extraction methods (ohmic, microwave, ultrasound and maceration) and extraction times were used. Moreover, choline chloride:formic acid (1:2, n:n) and water mixture (1:1, v:v) was used as the solvent and the solute to solvent ratio was adjusted to 1:5 (m:v) wastewater: solvent ratio. Total phenolic content was selected as dependent variable. Maximum total phenolic content (24.25±1.19 mg GAE/g OMW) was reached at microwave (270 W power) and 80 minutes process time. In addition, it was found that the variaiton of TPC with respect to time fit Peleg model. The highest B0 and Cmax values were detected at ohmic and microwave, assisted extraction respectively.

Anahtar Kelimeler

• Ohmic
• microwave
• ultrasound
• DES
• olive mill wastewater
• phenolic compounds
• modelling

Kaynakça

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