Comparative assessment of Azolla pinnata and Vallisneria spiralis in Hg removal from G.B. Pant Sagar of Singrauli Industrial region, India.

Environmental Monitoring and Assessment
Prabhat Kumar Rai, B D Tripathi

Abstract

The aim of the present work was to monitor the Hg pollution in water and sediments of G.B. Pant Sagar located in Singrauli Industrial Region, India and to suggest the efficient aquatic plants for its phytoremediation. The study assessed the comparative potential of a free floating water fern Azolla pinnata and submerged aquatic macrophyte Vallisneria spiralis to purify waters polluted by Hg. Six days laboratory experiments have been conducted to mark the percentage removal of Hg at initial concentration of 0.1, 0.5, 1.0 and 3.0 mg L(-1). The percentage removal of Hg was higher for A. pinnata (80-94%) than V. spiralis (70-84%). Likewise, the Hg accumulated in dry mass was much higher for A. pinnata and a high correlation (R(2) = 0.91 for A. pinnata and 0.99 for V. spiralis) was obtained between applied Hg doses and accumulated amounts in biomass. A concentration dependent decrease in chlorophyll a, protein, RNA, DNA and nutrients (NO(3-) and PO(4)(3-)) uptake was detected in A. pinnata and V. spiralis due to Hg toxicity. The decrease was more prominent in Azolla than Vallisneria. The results recommended the use of A. pinnata and V. spiralis to ameliorate the industrial effluents (thermal power, chlor-alkali and coal mine effluen...Continue Reading

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Citations

Mar 8, 2012·Ambio·Anjuli SoodAmrik S Ahluwalia
Aug 26, 2010·International Journal of Phytoremediation·Prabhat Kumar Rai
Dec 21, 2010·International Journal of Phytoremediation·Jonathan M WillisMark W Hester
Aug 26, 2010·International Journal of Phytoremediation·Prabhat Kumar Rai
Jan 1, 2011·African Journal of Traditional, Complementary, and Alternative Medicines : AJTCAM·Sarfaraz Khan MarwatMuhammad Zafar
Apr 10, 2013·Ecotoxicology and Environmental Safety·Sandhya Bharti, Tarun Kumar Banerjee
Jun 9, 2012·Ecotoxicology and Environmental Safety·Vimal Chandra Pandey
May 11, 2012·Ecotoxicology and Environmental Safety·Sandhya Bharti, Tarun Kumar Banerjee
Mar 26, 2011·Chemosphere·M Azizur Rahman, H Hasegawa
May 25, 2010·Current Opinion in Biotechnology·L Stout, K Nüsslein
Apr 22, 2015·Bulletin of Environmental Contamination and Toxicology·Abdul Barey ShahRana Pratap Singh
Sep 25, 2016·Environmental Monitoring and Assessment·Samuel KapiaHarry Sakulas
May 12, 2009·Environmental Monitoring and Assessment·Prabhat Kumar Rai

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