Nanotechnology‐based wastewater treatment

Abstract

Water contamination is a global challenge impacting both the environment and human health with significant economic and social costs. The growing scarcity of usable water resources requires effective treatment of wastewater. In this context, developing cheaper, safer and more efficient wastewater treatment technologies are the need of the hour. One promising approach that several studies have reported success has been the usage of nanomaterials in water and waste water management. The rapid progress of research in nanomaterial sciences has shown their growing potential; however, there has not been a great amount of information available on their implementation. This review focuses on developments in nanotechnology that hold strong potential for wastewater treatment. The review covers key techniques in nanomaterial‐based water treatments including adsorption, filtration and photocatalysis with recent examples showing how to improve their properties and efficiencies according to the need.

Review on the Use of Heavy Metal Deposits from Water Treatment Waste towards Catalytic Chemical Syntheses

“…However, during this process, the effect of discharge of nanoabsorbents on the environment should be considered. The nanotechnology-based process has overcome the shortcomings of previous technologies and, in addition, the process provides greater efficiency and a low generation of waste materials [153]. The treatment of heavy metals present in wastewater can be treated using nanomaterials that are divided into two classes: one in situ, and the other ex situ.…”

Use of dirty plastic waste as precursors for activated carbon production—A contribution to the circular economy

“…The ACs are well-known materials for the adsorption of pollutants and their removal from water streams. As example, many others could be included here; we can cite the review published by Cheriyamundath and Vavilala (2021), the papers by Mojiri et al (2020) andPhilibert et al (2020). Besides the high adsorption capacity, the carbon-based adsorbents can be regenerated and recycled, which is another advantage of these materials (Alvarez et al, 2004;Muranaka et al, 2010).…”

Uses of Nanoclays and Adsorbents for Dye Recovery: A Textile Industry Review

“…The basic advantages of these technologies can be classified as follows: metal oxides, carbon nanotubes, and nanoclays are low-cost; nanotubes and membranes have highefficiency; and membranes and photocatalysts are easily applied [31].…”