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Ganesan Karthikeyan Kamaludeen Sara Parwin Banu Muthunalliappan Maheswari Subburamu Karthikeyan Joseph Ezra John Rajarathinam Prabhu Ramesh Poornima

Abstract

Various physico-chemical methods have been employed in remediating heavy metals from wastewater, but most of them are
expensive. While phytoremediation, is one cost-effective and eco-friendly technology, proves to be an alternate amongst which Vetiver, a unique tropical plant, is recognized for its large biomass and dense root system and has been proven for various remediation studies. The current research was conducted to assess the potential for Vetiver rhizofiltration of chromium. A pilot study was conducted in rhizobox wherein Vetiver was grown using sand as a medium and samples were collected from rhizobox port 1 and rhizobox port 2. Subsequently, the study was upscaled to a floating bed experiment. In both studies, Vetiver were grown under 500 mg L-1 Cr (III) solution and tannery effluent had a chromium concentration of 379 mg L-1 and the results were compared to control. Between the samples collected from port 1 and 2, the removal of chromium in port 1 was recorded to be higher than that of port 2. Moreover, the removal of chromium ions from the tannery effluent was relatively higher than the spiked solution. In both the ports, the highest removal of chromium concentration was recorded in T5 (Sand + Vetiver + Cr (III) @ 500 mg kg-1) with a removal percent of 12.59 and 10.38% in port 1 and 2, respectively. Hence, Vetiver grass has a great potential in removing pollutants like chromium from the wastewater. 

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Keywords

Chromium, Floating Bed, Rhizobox, Tannery, Vetiver

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Section
Research Articles

How to Cite

Suitability of vetiver (Vetiveria zizanioides) for removal of Cr (III) from tannery effluent using floating bed and rhizofiltration systems. (2022). Journal of Applied and Natural Science, 14(SI), 105-110. https://doi.org/10.31018/jans.v14iSI.3575