Kinetic, thermodynamics and process design of the adsorption of dipolar dye molecules, namely Brilliant green (BG) and Naphthalene Blue 12B (NB12B), from aqueous solution using a zwitterionic adsorbent coating (ZwitAd) were investigated. This zwitterionic adsorbent coating was synthesized by a facile technique, which implied only 3 main chemicals: acrylic polymer emulsion (binder), bentonite (fillers) and EPIDMA (cationic polyelectrolyte). The scale-up of this formulation was proved showing that this coating adsorbent is viable to be adopted in a large-scale production. This novel adsorbent was synthesized in a coating form to obtain a feasible and practical application for the adsorption of both cationic and anionic dyes from wastewaters. Besides, this new adsorbent could be easily separated from the system without applying extra processing methods such as filtration or centrifugation. Adsorption studies showed that Freundlich model described satisfactorily the BG adsorption, whereas the NB12B adsorption was fitted with Langmuir isotherm. A single stage process was designed and the corresponding mathematical formulations was developed using the best adsorption models. Process design was performed to optimize the adsorbent amount for achieving a specific target of given initial effluent concentration and volume of treated wastewater. This optimization contributed to minimize the capital investment cost in order to satisfy a standard defined for the dye removal. Different alternatives for the application of this novel adsorbent in an industrial facility have been described and discussed. This study contributes with new findings to improve the implementation of novel adsorbents for water treatment and purification at industrial scale.

研究了使用两性离子吸附剂涂层 (ZwitAd) 从水溶液中吸附偶极染料分子，即亮绿 (BG) 和萘蓝 12B (NB12B) 的动力学、热力学和工艺设计。这种两性离子吸附涂层是通过一种简便的技术合成的，该技术仅包含 3 种主要化学物质：丙烯酸聚合物乳液（粘合剂）、膨润土（填料）和 EPIDMA（阳离子聚电解质）。该配方的放大证明表明该涂层吸附剂可用于大规模生产。这种新型吸附剂以涂层形式合成，以获得从废水中吸附阳离子和阴离子染料的可行和实际应用。除了，这种新的吸附剂可以很容易地从系统中分离出来，而无需采用额外的处理方法，例如过滤或离心。吸附研究表明，Freundlich 模型令人满意地描述了 BG 吸附，而 NB12B 吸附符合 Langmuir 等温线。设计了一个单阶段过程，并使用最佳吸附模型开发了相应的数学公式。进行工艺设计以优化吸附剂的量，以实现给定的初始废水浓度和处理废水量的特定目标。这种优化有助于最大限度地降低资本投资成本，以满足为染料去除定义的标准。已经描述和讨论了在工业设施中应用这种新型吸附剂的不同替代方案。