Nanomaterials as Sorbents for Environmental Remediation
Journal Title: Archives of Nanomedicine: Open Access Journal - Year 2018, Vol 1, Issue 4
Abstract
The rapid pace of industrialization and its resulting by-products have affected the environment by producing hazardous wastes and poisonous gas fumes and smokes, which have been released to the environment. Conventional technologies have been used to treat all types of organic and toxic waste by sorption, biological oxidation, chemical oxidation and incineration. Super-critical water oxidation (SCWO) is an emerging technique for treatment of organic waste. Nanomaterials find extensive applications [1] and their use in environmental remediation is becoming quite attractive. The removal of pollutants from the environment is based on the reactivity of the nanomaterial used and the pollutants may either be sorbed or degraded. The advantages of using nanosorbents are the ability to fine tune the sorption properties by changing the shape, size, morphology etc. Most of the nanomaterials have multifunctional properties including sorption, antimicrobial, photocatalytic or redox. Magnetic sorbents can be easily phase separated from the aqueous stream after use. There are two general approaches viz bottom-up and top-down, for the synthesis of nanomaterials [2,3]. The bottom-up approach includes the self assembly of smaller components to form nanostructures during which the physical forces operating at nanoscale are used to combine the basic units into nanostructures. A typical example of this kind of approach is the formation of quantum dots during epitaxial growth and nanoparticles formation from colloidal dispersion. In top-down approach, macroscopic structures are broken down into the smaller size particles.
Authors and Affiliations
Jayshree Ramkumar
Keywords
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- EP ID EP585444
- DOI 10.32474/ANOAJ.2018.01.000116
- Views 100
- Downloads 0
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