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

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