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- Title
Potential of Ipomoea aquatica for elimination of phenol and cyanide from mono and binary component aqueous solution in a photosynthesis chamber.
- Authors
Singh, Neetu; Balomajumder, Chandrajit
- Abstract
Under the current study, water spinach (Ipomoea aquatica) has been tested for elimination of phenol and cyanide from mono and binary component aqueous solution in batch system. The plant was grown at six concentrations of phenol and cyanide in the ratio of (10:1), i.e., 100:10, 200:20, 300:30, 500:50, 700:70 and 1,000:100 in aqueous solution. The plant was found capable of eliminating up to 94.92% of phenol (300 mg/L) and 91.67% of cyanide (30 mg/L) during 13 d cultivation time. Removal of phenol was observed harmless at lower concentration upto 100-200 mg/L without any toxic effect; however, at 300-1,000 mg/L, plants have been indicated toxic effects. Moreover, Ipomoea aquatica indicated toxicity for all six concentration of cyanide. The effect of process parameters such as initial concentration of phenol and cyanide and pH was evaluated. In the Ipomoea aquatica plant, the biochemical parameters such as chlorophyll, protein and sugar content have been indicated a decreasing trend due to uptake of phenol and cyanide during cultivation. The calculated Km of the root length elongation was 11.26 mM and the Vmax was 7.24 µg phenol/g root/h. However, the calculated Km of the root length elongation for cyanide was 6.65 mM and the Vmax was 0.56 µg cyanide/g root/h. Toxicity to 100-1,000 mg/L of phenol and 10-100 mg/L of cyanide was measured by measuring the relative transpiration over 13 d. At 100 mg/L of phenol and 10 mg/L of cyanide, only a slight reduction in transpiration but no morphological changes were detected. In this study, phytoextraction/phytoaccumulation is found to be the mechanism of elimination since phenol and cyanide are accumulated into the root, stem and leaves of the plants. Pollutants are absorbed through the root of the plant by plasmalemma and become accumulated into the root cells and stem of a plant.
- Subjects
IPOMOEA aquatica; AQUEOUS solutions; PHOTOSYNTHESIS
- Publication
Desalination & Water Treatment, 2017, Vol 62, p431
- ISSN
1944-3994
- Publication type
Article
- DOI
10.5004/dwt.2017.0271