Vo Thi Sinh, Vo Tran Thi Bich Chau, Suk Ji Won, Kim Kyunghoon
School of Mechanical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
Department of Industrial Management, Can Tho University, Can Tho, Vietnam.
Nano Converg. 2020 Feb 10;7(1):4. doi: 10.1186/s40580-019-0215-0.
Water is one of the most important resources for human survival and development. Efficient wastewater treatment techniques such as coagulation, filtration, ozonation, and reverse osmosis have been studied to remove toxic materials from water. Implementation of adsorption columns has been proven to be an efficient wastewater treatment method, particularly for the removal of organic contaminants. In this study, we present the preparation of an eco-friendly graphene oxide-chitosan (GC) composite hydrogel column (GCCHC) and its application as a broad-spectrum adsorbent for wastewater treatment. The GCCHC shows a high removal capacity towards different contaminants including both cationic dyes [methylene blue (MB) and rhodamine B (RhB)] and anionic dyes [methylene orange (MO) and congo red (CR)]. Moreover, the samples can be regenerated and recycled without loss of contaminant removal capacity over successive adsorption and washing cycles.
水是人类生存和发展最重要的资源之一。人们研究了诸如混凝、过滤、臭氧化和反渗透等高效废水处理技术，以去除水中的有毒物质。事实证明，采用吸附柱是一种高效的废水处理方法，尤其适用于去除有机污染物。在本研究中，我们展示了一种环保型氧化石墨烯-壳聚糖（GC）复合水凝胶柱（GCCHC）的制备及其作为广谱吸附剂用于废水处理的应用。GCCHC对包括阳离子染料[亚甲基蓝（MB）和罗丹明B（RhB）]和阴离子染料[甲基橙（MO）和刚果红（CR）]在内的不同污染物具有高去除能力。此外，样品可以再生和循环利用，在连续的吸附和洗涤循环中不会损失污染物去除能力。
