The control of chemical, morphological, textural and magnetic properties developed in magnetic activated carbons (MACs) from industrial food waste, was achieved. The process parameters involved in a sustainable and optimized one-step activation route, based on the circular economy model, played an important role and its influence was studied, offering interesting and outstanding results. Magnetite crystals were formed on the MACs surface obtained from 400 °C to 800 °C while other iron species, such as metallic iron and iron carbides, were formed only at 800° C. Acid washing favored the mineral matter removal and the presence of iron species was drastically reduced in acid-washed MACs, mainly the iron species originated at 800 °C. Water-washed MACs presented better magnetic response at high temperatures (confirmed by XRD, FTIR, Raman, Mössbauer spectroscopy and VSM characterization techniques). High BET surface area (≈ 822 m²/g) and a large micropore volume (≈ 0.30 cm³/g), were reached by acid washed MACs at 800 °C. The obtained MACs were fundamentally microporous, but some mesoporosity was also observed when activating agent/precursor mass ratio (1:1) is used. It can be concluded that a MACs strategic design was reached with the objective of removing specific pollutants in multiple environmental applications.

实现了对 工业食物垃圾中磁性活性炭（MAC）中形成的化学，形态，质地和磁性的控制。在循环经济模型的基础上，可持续和优化的单步激活路径所涉及的过程参数起着重要作用，并对其影响进行了研究，从而提供了有趣而出色的结果。 从400°C到800°C获得的MACs表面形成了磁铁矿晶体，而其他铁物种（例如金属铁和碳化铁）则形成了 酸洗仅在800°C时形成。酸洗有利于去除矿物质，并且在酸洗过的MACs中铁种类的存在大大减少，主要是在800°C产生的铁种类。水洗的MAC在高温下表现出更好的磁响应（已通过XRD，FTIR，拉曼，穆斯堡尔光谱法和VSM表征技术进行了确认）。在800°C下用酸洗过的MAC可获得较高的BET表面积（约822 m ² / g）和较大的微孔体积（约0.30 cm ³ / g）。将 获得的MAC是根本的微孔，但也观察到一些中孔 时 使用活化剂/前体质量比（1：1）。可以得出结论，达成了MACs战略设计，其目的是在多种环境应用中去除特定污染物。