Phytoremediation of nitrate contaminated water using ornamental plants
| Autor: | Kannan Pakshirajan, S. Shyamala, Van Tai Tang, Hung-Suck Park, Shishir Kumar Behera, N. Arul Manikandan, Eldon R. Rene |
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| Rok vydání: | 2019 |
| Předmět: |
Environmental Engineering
Health Toxicology and Mutagenesis 0208 environmental biotechnology 02 engineering and technology 010501 environmental sciences 01 natural sciences 020801 environmental engineering Contaminated water Phytoremediation chemistry.chemical_compound Agronomy Nitrate chemistry Ornamental plant Environmental science 0105 earth and related environmental sciences Water Science and Technology |
| Zdroj: | Journal of Water Supply: Research and Technology-Aqua. 68:731-743 |
| ISSN: | 1605-3974 0003-7214 |
| Popis: | This work aims at evaluating the potential of two ornamental plant species, i.e., money plant (Epiprennum aureum) and arrowhead plant (Syngonium podophyllum), to treat nitrate containing wastewater. Statistically designed experiments were performed to ascertain the effect of initial nitrate concentration (40–120 mg/L), growth period (1–12 days) and plant density (20–80 g/L) on nitrate removal. Based on the results of analysis of variance (ANOVA), it was observed that the individual effects (F = 78.04 and P = 0.013) of process parameters influenced the nitrate removal efficiency by money plant stronger than the 2-way (F = 0.2 and P = 0.89) and 3-way interaction effects (F = 0.46 and P = 0.569). In the case of the arrowhead plant, the individual effects significantly affected the nitrate removal efficiency than the 2-way and 3-way interaction effects. Low nitrate concentrations (40 mg/L) and high plant density (80 g/L), showed ∼88% nitrate removal by arrowhead plant, during a growth period of 6 d. On the contrary, under similar conditions, the money plant showed a nitrate removal efficiency of ∼93% during a growth period of 12 d. Concerning the removal kinetics, an increase in the growth period increased the nitrate removal rate for both the plants. |
| Databáze: | OpenAIRE |
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