Characterization of Ionic Exchange and Macroporous Resins for Their Application on the Separation and Recovery of Chlorogenic Acid from the Wastewater of Artichoke Blanching

Antonio D. Rodriguez-Lopez, Milagro Reig, Luis Mayor, Mireia Ortiz-Climent and Esperanza M. Garcia-Castello
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Antonio D. Rodriguez-Lopez: Research Institute for Industrial, Radiophysical and Environmental Safety (ISIRYM), Universitat Politècnica de València, Camino de Vera, s/n, CP 46022 Valencia, Spain
Milagro Reig: Institute of Food Engineering for Development (IIAD), Universitat Politècnica de València, Camino de Vera, s/n, CP 46022 Valencia, Spain
Luis Mayor: ISEKI-Food Association, Muthgasse, 18, A-1190 Vienna, Austria
Mireia Ortiz-Climent: Institute of Food Engineering for Development (IIAD), Universitat Politècnica de València, Camino de Vera, s/n, CP 46022 Valencia, Spain
Esperanza M. Garcia-Castello: Institute of Food Engineering for Development (IIAD), Universitat Politècnica de València, Camino de Vera, s/n, CP 46022 Valencia, Spain

Sustainability, 2021, vol. 13, issue 16, 1-15

Abstract: Food wastes have traditionally been considered as dead-end materials; however, recent international, national, and regional policies strongly promote the use of these wastes as potential resources. This change of perception considers the need for sustainable exploitation of natural resources. In this context, artichoke processing produces high amounts of wastewaters, and specifically, wastewaters from the artichoke blanching step present a high content of valuable biocomponents such as carbohydrates and phenolic compounds (e.g., chlorogenic acid, 1700 ppm). In this work, the recovery of chlorogenic acid by applying sorption processes was studied. Five resins were tested, and it was found that the resin XAD 7 HP presented the best total adsorption-desorption yield (72.8%) at 20 °C. It was also found that there was a strong variation of the adsorption ratio depending on solution pH (3–7). Four models of isotherms were applied to the adsorption processes, and the Langmuir isotherm better explained the adsorption behavior. The kinetic study showed that the adsorption and desorption of chlorogenic acid followed a pseudo-second order model where the kinetic constant depended on the adsorbate concentration. In addition, it was found that the sorption process was controlled by more than just the intraparticle diffusion mechanism.

Keywords: resin; adsorption; desorption; chlorogenic acid; isotherm; kinetic; artichoke (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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