Removal of water pollutants using plant-based nanoscale zero-valent iron: A review

Author:

Kheskwani Urvashi1,Ahammed M. Mansoor1ORCID

Affiliation:

1. 1 Department of Civil Engineering, Sardar Vallabhbhai National Institute of Technology, Surat 395007, India

Abstract

Abstract Nanotechnology has been increasingly explored for the treatment of various waste streams. Among different nanoparticles, nanoscale zerovalent iron (nZVI) has been extensively investigated due to its high reactivity and strong reducing power. However, conventional methods for the synthesis of nZVI particles have several limitations and led to the green synthesis of nZVI using plant-based materials. Plant extracts contain various reducing agents that can be used for nZVI synthesis, eliminating the need for toxic chemicals, and reducing energy consumption. Additionally, each plant species used for nZVI synthesis results in unique physicochemical properties of the nanoparticles. This review paper provides an overview of plant-based nZVI particle synthesis, its characteristics, and its application for the removal of different classes of pollutants such as dyes, heavy metals, nutrients, and trace organic pollutants from water. The review shows that continued research on plant-based nZVI particles to fully understand its potential in wastewater treatment, especially for the removal of a wider variety of pollutants, and for improving sustainability and reducing the cost and environmental impact of the process, is necessary.

Publisher

IWA Publishing

Subject

Water Science and Technology,Environmental Engineering

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