Batch and Continuous Flow Adsorption of Phenolic Compounds from Olive Mill Wastewater: A Comparison between Nonionic and Ion Exchange Resins

Pinelli, Davide ; Molina Bacca, Aurora Esther ; Kaushik, Ankita ; Basu, Subhankar ; Nocentini, Massimo ; Bertin, Lorenzo ; Frascari, Dario (2016) Batch and Continuous Flow Adsorption of Phenolic Compounds from Olive Mill Wastewater: A Comparison between Nonionic and Ion Exchange Resins. International Journal of Chemical Engineering, 2016 . Article ID-9349627. ISSN 1687-8078
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Abstract

The goals of this work were (i) to compare two anion ion exchange resins (IRA958 Cl and IRA67) and a non-ionic resin (XAD16) in terms of phenolic compounds adsorption capacity from olive mill wastewater, and (ii) to compare the adsorption capacity of the best resin on columns of different length. The ion exchange resins proved less performant than non-ionic XAD16 in terms of resin utilization efficiency (20% versus 43%) and phenolic compounds/COD enrichment factor (1.0 versus 2.5). The addition of volatile fatty acids did not hinder phenolic compounds adsorption on either resin, suggesting a non-competitive adsorption mechanism. A pH increase from 4.9 to 7.2 did not affect the result of this comparison. For the best performing resin (XAD16), an increase in column length from 0.5 to 1.8 m determined an increase in resin utilization efficiency (from 12% to 43%), resin productivity (from 3.4 to 7.6 g sorbed phenolics/kg resin) and phenolics/COD enrichment factor (from 1.2 to 2.5). An axial dispersion model with non-equilibrium adsorption accurately interpreted the phenolic compounds and COD experimental curves.

Abstract
Document type
Article
Creators
CreatorsAffiliationORCID
Pinelli, DavideDICAM - Università di Bologna0000-0001-8495-6277
Molina Bacca, Aurora EstherDICAM - Università di Bologna
Kaushik, AnkitaThe Energy and Resources Institute (TERI)
Basu, SubhankarThe Energy and Resources Institute (TERI)
Nocentini, MassimoDICAM - Università di Bologna
Bertin, LorenzoDICAM - Università di Bologna
Frascari, DarioDICAM - Università di Bologna0000-0001-9258-8208
Keywords
Olive mill wastewater, polyphenols, adsorption, desorption, valorization, resin
Subjects
ISSN
1687-8078
DOI
Deposit date
16 Jan 2017 10:05
Last modified
08 May 2017 13:00
Project name
MADFORWATER - DevelopMent AnD application of integrated technological and management solutions FOR wasteWATER treatment and efficient reuse in agriculture tailored to the needs of Mediterranean African Countries
Funding program
EC - H2020
URI

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