Diatom Microalgae As Smart Nanocontainers for Biosensing Wastewater Pollutants: Recent Trends and Innovations

Overview

Journal Bioengineered

Date 2021 Oct 28

PMID 34709977

Citations 12

Authors

Mohd Jahir Khan

Anshuman Rai

Ankesh Ahirwar

Vandana Sirotiya

Megha Mourya

Sudhanshu Mishra

Benoit Schoefs

Justine Marchand

Shashi Kant Bhatia

Sunita Varjani

Vandana Vinayak

Affiliations

Soon will be listed here.

Abstract

Microalgae have been recognized as one of the most efficient microorganisms to remediate industrial effluents. Among microalgae diatoms are silica shelled unicellular eukaryotes, found in all types of water bodies and flourish very well even in wastewater. They have their silica cell wall made up of nano arrayed pores arranged in a uniform fashion. Therefore, they act as smart nanocontainers to adsorb various trace metals, dyes, polymers, and drugs which are hazardous to human as well to aquatic life. The beautiful nanoarchitecture in diatoms allows them to easily bind to ligands of choice to form a nanocomposite structure with the pollutants which can be a chemical or biological component. Such naturally available diatom nanomaterials are economical and highly sensitive compared to manmade artificial silica nanomaterials to help in facile removal of the toxic pollutants from wastewater. This review is thus focused on employing diatoms to remediate various pollutants such as heavy metals, dyes, hydrocarbons detected in the wastewater. It also includes different microalgae as biosensors for determination of pollutants in effluents and the perspectives for nanotechnological applications in the field of remediating pollutants through microalgae. The review also discusses in length the hurdles and perspectives of employing microalgae in wastewater remediation.

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