Characterization of olive mill wastewater fractions treatment by integrated membrane process

被引：29

作者：

Di Lecce, Giuseppe ^{[1
]}

Cassano, Alfredo ^{[2
]}

Bendini, Alessandra ^{[1
,3
]}

Conidi, Carmela ^{[2
]}

Giorno, Lidietta ^{[2
]}

Toschi, Tullia Gallina ^{[1
,3
]}

机构：

[1] Univ Bologna, Dept Agr & Food Sci, Alma Mater Studiorum, I-47521 Cesena, FC, Italy

[2] CNR, ITM, I-87036 Arcavacata Di Rende, CS, Italy

[3] Univ Bologna, Interdept Ctr Agri Food Ind Res CIRI Agroalimenta, I-47521 Cesena, FC, Italy

来源：

JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE | 2014年 / 94卷 / 14期

关键词：

olive mill wastewaters; microfiltration; nanofiltration; phenolic compounds; antioxidant activity; PHENOLIC PROFILE; EFFLUENTS; WASTEWATERS; FLOCCULATION; VALORISATION; PRETREATMENT; POLYPHENOLS; RECOVERY; PRODUCTS; STORAGE;

D O I：

10.1002/jsfa.6637

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

BACKGROUND: Up to now, the management of olive mill wastewaters, a three-phase mill by-product, remains an unsolved problem, in particular for those regions where huge quantities of vegetable water are produced. Olive mill wastewaters were therefore treated to evaluate the characteristics of permeate and retentate fractions produced by an integrated membrane system working at two different volume concentration factors. RESULTS: The effect of two membrane-based filtration steps (microfiltration and nanofiltration) on the content of chemical oxygen demand, dry matter, sensory quality, phenolic compounds and antioxidant activity of permeate and retentate samples was evaluated. Furthermore, the effect of two different volume concentration factors (VCF), in the nanofiltration step, were investigated. At high VCF values, the total phenolic content in the retentate fraction was found to be 3.7-fold higher than the starting one, while the reduction of chemical oxygen demand in the permeate fraction was greater than 97% also at lower VCF values. CONCLUSION: Each filtration step has provided useful information concerning the utility and appropriateness of the processes chosen, suggesting a sustainable hypothesis of 'normal industrial practice' that can be included in current processes of oil extraction, in order to purify water and recover phenolic compounds with high added value. (C) 2014 Society of Chemical Industry

引用

页码：2935 / 2942

页数：8

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