Insights of CMNPs in water pollution control

Abstract

The various toxic contaminants such as dyes, heavy metals, pesticides, rare-earth elements, and hazardous chemicals are the major threats to all the flora and fauna. Owing to the harmful ill effects caused by the toxic contaminants, it is necessary to eliminate these compounds from the authors' ecosystem. The chitosan magnetic nanomaterials (CMNPs) are one of the superior materials used in the wastewater treatment through various conventional technologies. The chitosan is a natural source obtained from the crustacean shells of crabs, prawns etc. The magnetic nanomaterial prepared by the reinforcement of chitosan is highly effective in the removal of heavy metals, dyes, organic matter, and harmful chemicals. It is used in various technologies such as adsorption, flocculation, immobilisation, photocatalytic technology, and bioremediation. This possesses unique surface and magnetic characteristics, Moreover, it is simple, economically feasible, and eco-friendly material used efficiently in wastewater treatment. This review paper depicts the overview of CMNP in the industrial effluent treatment.

Environmental implications of Chitosan nanostructures

“…Nano materials, on the other hand, come into contact with their surroundings through their surfaces; as a result, nanoparticles may even be more harmful. Nanoparticles are typically functionalized to get over these restrictions and maintain their distinctive qualities, albeit the materials employed for functionalization have various effects on the physico-chemical characteristics of nanoparticles [47]. The fusion of nanoparticles and polymers within a single system has recently gained considerable traction in the realm of environmental remediation, particularly in the context of polymer functionalization of nanoparticles.…”

Functionalized Magnetic Nanomaterials in Agricultural Applications

“…In addition to their high surface area and the functionalization of their surface with appropriate adsorption moieties enabling the removal of contaminants via the development of electrostatic interactions, π-stacking and cation-π-interactions, hydrogen bonding, metal ion complexation, etc., their inherent magnetic properties provide an additional advantage, being the facile separation of the adsorbent and recovery from aqueous solutions upon completion of the adsorption process by means of an externally applied magnetic field. In addition, their catalytic performance can also be used synergistically to the adsorption process, resulting in the degradation of agricultural wastewater organic pollutants [10][11][12][13][14][15][16][17][18][19][20]. Since the main scope of this review article is to provide an overview on the use of magnetic nanomaterials in various aspects of agriculture, this study focuses on the most recent work published in the last two years.…”

Adsorption of Uranium, Mercury, and Rare Earth Elements from Aqueous Solutions onto Magnetic Chitosan Adsorbents: A Review

“…Water is the most essential component for all living organisms on earth. However, owing to the tremendous growth of the planet’s population, along with industrialization and technology development, water pollution issues arise [ 4 ]. Heavy metals, including mercury, uranium, cobalt, copper, zinc, chromium, cadmium, lead, nickel, arsenic etc., are usually inserted in lakes, reservoirs, groundwater, streams, and rivers, mainly due to industrial effluents [ 5 ].…”