The present investigation was focused on improving the feasibility of large-scale application of a ‘green’ procedure to recover total antioxidant compounds (TACs) by solid phase extraction from the liquid residues of oleic industry (two-phase olive oil washing wastewaters, OOWW). To this aim, the use of ion exchange resins Dowex 21 K XLT® strong base and Dowex 66® weak base was examined. Adsorption capacity equal to 146.12 mg TACs_adsorbed/g_resin upon 114 g_resin/L_OOWW for the weak-base resin and 117.29 mg TACs_adsorbed/g_resin for 114 g_resin/L_OOWW for the strong-base resin was successfully attained. Thus, it was possible to recover up to 83.3% TACs with the weak-base resin in contrast to 60.8% with the strong-base one. Also, 55.8% vs. 53.7% COD removal was ensured. The process could be driven with raw OOWW, taken directly at the conditions at the outlet of vertical centrifuges, since narrow improvement with T and pH modifications was found. Moreover, significant reduction in phenols concentration would prevent biomass inhibition of further biological treatments, or even permit partial discharge on land. On the other hand, the high added-value concentrated pool of antioxidant compounds would be key to render the reclamation of this effluent feasible at industrial scale.

本研究的重点是提高大规模应用“绿色”程序通过从油酸工业（两相橄榄油洗涤废水，OOWW）的液体残留物中进行固相萃取来回收总抗氧化剂化合物（TAC）的可行性。 ）。为此，研究了使用离子交换树脂Dowex 21  KXLT®强碱和Dowex66®弱碱。吸附容量等于146.12毫克TAC小号_吸附/克_树脂在114克_树脂/ L _OOWW为弱碱性树脂和117.29毫克TAC小号_吸附/克_树脂为114克_树脂/ L _OOWW强碱树脂已成功获得。因此，与弱碱树脂相比，使用弱碱树脂可回收高达83.3％的TAC，而对强碱树脂则可回收高达60.8％的TAC。同样，确保了55.8％的COD去除率与53.7％的去除率。可以直接在立式离心机出口处的条件下采用原始OOWW来驱动该过程，因为发现在T和pH值修饰的情况下可以得到较窄的改进。而且，苯酚浓度的显着降低将阻止生物质对进一步生物处理的抑制，甚至允许土地上的部分排放。另一方面，抗氧化剂化合物的高附加值浓缩池将是使这种废水的回收在工业规模上可行的关键。