Accumulation of arsenic and nutrients by castor bean plants grown on an As-enriched nutrient solution
| Autor: | Évio Eduardo Chaves de Melo, Valdemar Faquin, Luiz Roberto Guimarães Guilherme, Clístenes Williams Araújo do Nascimento, Enio Tarso de Souza Costa |
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| Rok vydání: | 2009 |
| Předmět: |
Environmental Engineering
biology Arsenic toxicity Health Toxicology and Mutagenesis Ricinus food and beverages Biomass Castor Bean biology.organism_classification Plant Roots Pollution Arsenic Phytoremediation Biodegradation Environmental Nutrient Agronomy Food Toxicity Tests Shoot Environmental Chemistry Dry matter Phytotoxicity Waste Management and Disposal Plant Shoots |
| Zdroj: | Journal of Hazardous Materials. 168:479-483 |
| ISSN: | 0304-3894 |
| DOI: | 10.1016/j.jhazmat.2009.02.048 |
| Popis: | Phytoextraction is a remediation technique that consists in using plants to remove contaminants from soils and water. This study evaluated arsenic (As) accumulation in Castor bean (Ricinus communis cv. Guarany) grown in nutrient solution in order to assess its phytoextraction ability. Castor bean plants were grown under greenhouse conditions in pots containing a nutrient solution amended with increasing doses of As (0, 10, 50, 100, 250, 500 and 5000 microg L(-1)) in a completely randomized design with four replications. Shoot and roots dry matter production as well as arsenic and nutrient tissue concentrations were measured at the end of the experiment. The results showed that increasing As concentration in nutrient solution caused a decrease in shoot and root biomass but did not result in severe toxicity symptoms in castor bean growing under a range of As concentration from 0 to 5000 microg L(-1). The As doses tested did not affect the accumulation of nutrients by castor bean. Although castor bean did not pose characteristics of a plant suitable for commercial phytoextraction, it could be useful for revegetation of As-contaminated areas while providing an additional income by oil production. |
| Databáze: | OpenAIRE |
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