Department of Chemical Engineering, Toronto Metropolitan University, 350 Victoria Street, Toronto, M5B 2K3, ON, Canada.
Department of Chemical Engineering, Toronto Metropolitan University, 350 Victoria Street, Toronto, M5B 2K3, ON, Canada; Department of Aerospace Engineering, Toronto Metropolitan University, 350 Victoria Street, Toronto, M5B 2K3, ON, Canada.
Chemosphere. 2024 May;355:141728. doi: 10.1016/j.chemosphere.2024.141728. Epub 2024 Mar 16.
Considering the plethora of work on the exceptional environmental performance of 2D nanomaterials, there is still a missing link in addressing their practical application in point-of-use (POU) water treatment. By reviewing the exceptional environmental performance of 2D nanomaterials with specific emphasis on graphene and its derivatives, this review aims at inspiring further discussions and research in graphene-based POU water treatment with particular focus on the removal of emerging contaminants of concern (ECCs), which is largely missing in the literature. We outlined the prevalence of ECCs in the environment, their health effects both on humans and marine life, and the potential of efficiently removing them from water using three-dimensional graphene-based macrostructures to ensure ease of adsorbent recovery and reuse compared to nanostructures. Given various successful studies showing superior adsorption capacity of graphene nanosheets, we give an account of the recent developments in graphene-based adsorbents. Moreover, several cost-effective materials which can be easily self-assembled with nanosheets to improve their environmental performance and safety for POU water treatment purposes were highlighted. We highlighted the strategy to overcome challenges of adsorbent regeneration and contaminant degradation; and concluded by noting the need for policy makers to act decisively considering the conservative nature of the water treatment industry, and the potential health risks from ingesting ECCs through drinking water. We further justified the need for the development of advanced POU water treatment devices in the face of the growing challenges regarding ECCs in surface water, and the rising cases of drinking water advisories across the world.
考虑到二维纳米材料在环境性能方面的大量研究工作，在解决其在现场（POU）水处理中的实际应用方面仍存在缺失环节。通过回顾二维纳米材料的卓越环境性能，特别强调石墨烯及其衍生物，本综述旨在激发关于基于石墨烯的 POU 水处理的进一步讨论和研究，特别关注新兴关注污染物（ECCs）的去除，这在文献中基本缺失。我们概述了 ECC 在环境中的普遍存在、它们对人类和海洋生物的健康影响，以及使用三维石墨烯基宏观结构从水中有效去除它们的潜力，与纳米结构相比，这确保了吸附剂回收和再利用的便利性。鉴于各种成功的研究表明石墨烯纳米片具有优越的吸附能力，我们介绍了基于石墨烯的吸附剂的最新进展。此外，还强调了几种具有成本效益的材料，这些材料可以与纳米片容易地自组装，以提高其在 POU 水处理中的环境性能和安全性。我们强调了克服吸附剂再生和污染物降解挑战的策略，并指出决策者需要果断采取行动，考虑到水处理行业的保守性质，以及通过饮用水摄入 ECC 带来的潜在健康风险。我们进一步证明了在面对地表水 ECC 日益增加的挑战以及全球范围内饮用水咨询案例不断增加的情况下，开发先进的 POU 水处理设备的必要性。
