Pollution of industrial wastewaters containing dyes is a major concern for health in many countries, calling for advanced remediation techniques. Here, we review dye classification, toxicity, and removal with focus on adsorption using nanomaterials and magnetic nanoparticles. We present isotherm modeling and kinetic studies. We discuss factors controlling dye adsorption, such as pH, dye concentration, adsorbent amount, and temperature. Adsorption using magnetic nanoparticles appear as a simple and cost-effective technique. Removal efficiency increases with adsorbent concentration but declines sharply with increasing pH. Temperature is also highly influencing the removal.

含有染料的工业废水的污染是许多国家对健康的主要关注，因此需要先进的修复技术。在这里，我们将重点介绍使用纳米材料和磁性纳米颗粒进行吸附的染料分类，毒性和去除方法。我们目前等温线建模和动力学研究。我们讨论控制染料吸附的因素，例如pH值，染料浓度，吸附剂数量和温度。使用磁性纳米颗粒的吸附似乎是一种简单且具有成本效益的技术。去除效率随吸附剂浓度的增加而增加，但随pH值的增加而急剧下降。温度也极大地影响去除。