Combining Ultrafiltration and Nanofiltration to Obtain a Concentrated Extract of Purified Polyphenols from Wet Olive Pomace

被引:11
|
作者
Sanchez-Arevalo, Carmen M. [1 ]
Garcia-Serrano, Ane Perez [1 ]
Vincent-Vela, Maria Cinta [1 ,2 ]
Alvarez-Blanco, Silvia [1 ,2 ]
机构
[1] Univ Politecn Valencia, Res Inst Ind Radiophys & Environm Safety, ISIRYM, Camino Vera S-N, Valencia 46022, Spain
[2] Univ Politecn Valencia, Dept Chem & Nucl Engn, Camino Vera S-N, Valencia 46022, Spain
关键词
ultrafiltration; nanofiltration; phenolic compounds; wet olive pomace; integrated process; rejection; BIOACTIVE COMPOUNDS; SURFACE-ROUGHNESS; UF MEMBRANES; WASTE-WATER; RECOVERY; MODEL; MICROPOLLUTANTS; ENRICHMENT; JUICE; ACID;
D O I
10.3390/membranes13020119
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Despite the environmental concerns raised every year by the generation of high volumes of wet olive pomace, it contains valuable phenolic compounds that are essential for the valorization of this by-product. In this work, an integrated process to recover phenolic compounds from wet olive pomace is proposed. It consists of ultrasound-assisted solid-liquid extraction, followed by ultrafiltration and nanofiltration. Several commercial membranes were studied at different operational conditions. The ultrafiltration stage allowed the purification of biophenols, which were obtained in the permeate stream. Regarding organic matter, satisfactory rejection values were obtained with both commercial UH030 and UP005 membranes (Microdyn Nadir), but the latter provided more efficient purification and higher values of permeate flux, above 18 L center dot h(-1)center dot m(-2) at 2.5 bar and 1.5 m center dot s(-1). Later, this permeate stream was concentrated by means of a nanofiltration process, obtaining polyphenol rejection values that surpassed 85% with the commercial NF270 membrane (DuPont), then achieving the concentration of the previously purified polyphenols.
引用
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页数:15
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