Benettayeb Asmaa, Seihoub Fatima Zohra, Pal Preeti, Ghosh Soumya, Usman Muhammad, Chia Chin Hua, Usman Muhammad, Sillanpää Mika
Laboratoire de Génie Chimique et Catalyse Hétérogène, Département de Génie Chimique, Université de Sciences et de la Technologie-Mohamed Boudiaf, USTO-MB, BP 1505 EL-M'NAOUAR, Oran 31000, Algeria.
Accelerated Cleaning Systems India Private Limited, Sundervan Complex, Andheri West, Mumbai 400053, India.
Nanomaterials (Basel). 2023 Jan 21;13(3):447. doi: 10.3390/nano13030447.
Adsorption is the most widely used technique for advanced wastewater treatment. The preparation and application of natural renewable and environmentally friendly materials makes this process easier and more profitable. Chitosan is often used as an effective biomaterial in the adsorption world because of its numerous functional applications. Chitosan is one of the most suitable and functionally flexible adsorbents because it contains hydroxyl (-OH) and amine (-NH) groups. The adsorption capacity and selectivity of chitosan can be further improved by introducing additional functions into its basic structure. Owing to its unique surface properties and adsorption ability of chitosan, the development and application of chitosan nanomaterials has gained significant attention. Here, recent research on chitosan nanoparticles is critically reviewed by comparing various methods for their synthesis with particular emphasis on the role of experimental conditions, limitations, and applications in water and wastewater treatment. The recovery of pollutants using magnetic nanoparticles is an important treatment process that has contributed to additional development and sustainable growth. The application of such nanoparticles in the recovery metals, which demonstrates a "close loop technology" in the current scenarios, is also presented in this review.
吸附是高级废水处理中应用最广泛的技术。天然可再生且环保材料的制备与应用使这一过程更简便且更具盈利性。壳聚糖因其众多功能应用，在吸附领域常被用作一种有效的生物材料。壳聚糖是最合适且功能最灵活的吸附剂之一，因为它含有羟基（-OH）和胺基（-NH）。通过在其基本结构中引入额外功能，壳聚糖的吸附容量和选择性可进一步提高。由于壳聚糖独特的表面性质和吸附能力，壳聚糖纳米材料的开发与应用受到了极大关注。在此，通过比较壳聚糖纳米颗粒的各种合成方法，对其近期研究进行了批判性综述，特别强调了实验条件的作用、局限性以及在水和废水处理中的应用。使用磁性纳米颗粒回收污染物是一个重要的处理过程，它推动了进一步的发展和可持续增长。本综述还介绍了此类纳米颗粒在回收金属方面的应用，这在当前情况下展示了一种“闭环技术”。
