NDLI: Removal of Colour from Aqueous Solutions by using Zero Valent Iron Nanoparticles

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Removal of Colour from Aqueous Solutions by using Zero Valent Iron Nanoparticles

Content Provider	Semantic Scholar
Author	Ahuja, Nidhi
Copyright Year	2016
Abstract	Nanoscale studies are gaining importance for the removal of chemical substances, dyes or other pollutants from the wastewater to reduce the future environmental impacts. Among them iron and its oxide nanoparticles have been successfully utilized for the elimination of hazardous and toxic wastes due to their catalytic, super-magnetic property and greater efficiency. The present study evaluated the removal of various dyes from water solutions by using ZVI (Zero Valent Iron nanoparticles). Synthesis of nanoparticles was carried out by borohydride chemical reduction method. Its characterisation was done by using X-Ray diffraction (XRD), Scanning Electron Microscope (SEM) and Brunauer- Emmett-Teller method (BET). SEM images showed that the size of synthesized nanoparticles were mostly in the range of 30-100µm in diameter. Some particles were less than 30 µm in size. Batch experiments were carried out to investigate the adsorption capacity of zero valent iron nanoparticles for various dyes from aqueous solutions. The ZVI particles showed maximum adsorption capacity (5339.3mg/g) for Drimarene dye S-RB (Reactive Red 198). The effects of pH, contact time, electrolyte, initial dye concentration and detergent were also investigated. The nano particle works effectively at acidic pH (3-6) but may also be used at basic or neutral pH. ZVI particles may be used more effectively for the removal of dye in the presence of salts.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://iosrjournals.org/iosr-jestft/papers/vol10-issue1/Version-2/B010120414.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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