Assessing the chelating ability of Aerva lanata: adsorption of chromium from tannery effluent and its toxicity measurement

• Published in: Химия и технология воды
• Date: 2013
• Main Authors: Poonkuzhali, K., Manivannan, M., Palvannan, T.
• Format: Article
• Language: English
• Published: Інститут колоїдної хімії та хімії води ім. А.В. Думанського НАН України 2013
• Subjects: Биологические методы очистки воды
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/130771
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Assessing the chelating ability of Aerva lanata: adsorption of chromium from tannery effluent and its toxicity measurement / K. Poonkuzhali, M. Manivannan, T. Palvannan // Химия и технология воды. — 2013. — Т. 35, № 3. — С. 240-250. — Бібліогр.: 27 назв. — рос.

The chelating ability of aqueous leaf extract of Aerva lanata was assessed in vitro. The aqueous leaf extract showed a dose dependent decrease in chelating ability using FeCl₂. The highest chelating ability of aqueous leaf extract was observed at 2•10⁻⁵ g/mL (100 ± 0.00). The antioxidant activity of the aqueous leaf extract ranged from 42.13% to 88.66%. At 2•10⁻⁵ g/mL concentration, a strong positive significant correlation was observed between chelating ability and total phenolics concentration (R = 0.94; P = 0.001). The chelating ability of aqueous leaf extract (2•10⁻⁵ g/mL) showed a high positive significant correlation with antioxidant activity (R = 0.78; P = 0.001). Aqueous leaf extract removed the chromium from tannery effluent by 43 mg/g. Allium cepa toxicity test was performed on tannery effluent treated with aqueous leaf extract that increased the root length of onion.