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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Manousaki, Eleni Dimitroula, Helen Nikolaidis, Nikolaos P. Syranidou, Evdokia Karatzas, George P. Kalogerakis, Nicolas |
| Description | Country affiliation: Greece Author Affiliation: Dimitroula H ( School of Environmental Engineering, Technical University of Crete, Polytecneioupolis, 73100 Chania, Greece.); Syranidou E ( School of Environmental Engineering, Technical University of Crete, Polytecneioupolis, 73100 Chania, Greece.); Manousaki E ( School of Environmental Engineering, Technical University of Crete, Polytecneioupolis, 73100 Chania, Greece.); Nikolaidis NP ( School of Environmental Engineering, Technical University of Crete, Polytecneioupolis, 73100 Chania, Greece.); Karatzas GP ( School of Environmental Engineering, Technical University of Crete, Polytecneioupolis, 73100 Chania, Greece.); Kalogerakis N ( School of Environmental Engineering, Technical University of Crete, Polytecneioupolis, 73100 Chania, Greece. Electronic address: nicolas.kalogerakis@enveng.tuc.gr.) |
| Abstract | A constructed wetland pilot with Juncus acutus L. plants was investigated for its rhizofiltration efficiency in treating Cr(VI)-contaminated groundwater. Measurements of Cr(VI) and total Cr were performed to estimate the rate of removal. In addition, Cr concentration in plant tissues was measured and the role of endophytic bacteria on plant's tolerance to Cr(VI) toxicity was investigated. The results support that J. acutus is able to rhizofiltrate Cr(VI) from contaminated water with up to 140µg/L while Cr content analysis in plant tissues revealed that the majority of Cr was accumulated by the plants. Moreover, two leaf (Acidovorax sp. strain U3 and Ralstonia sp. strain U36) isolated endophytic bacteria were found to tolerated 100mg/L Cr(VI) while nine root isolates showed resistance to 500mg/L Cr(VI). The endophytic bacteria Pseudomonas sp. strain R16 and Ochrobactrum sp. strain R24 were chosen for Cr(VI) reduction assays. All four strains exhibited a strong potential to reduce Cr(VI) to Cr(III) aerobically. Among them Pseudomonas sp. strain R16 was found able to completely reduced 100mg/L Cr(VI) after 150h of incubation. These results suggest that J. acutus is an excellent choice for CWs whose function is the removal of Cr(VI) from contaminated groundwater for subsequent use in crop irrigation. |
| ISSN | 03043894 |
| Volume Number | 281 |
| e-ISSN | 18733336 |
| Journal | Journal of Hazardous Materials |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2015-01-08 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Angiosperms Microbiology Bacteria Metabolism Chromium Plant Leaves Plant Roots Water Pollutants, Chemical Genetics Growth & Development Isolation & Purification Analysis Dna, Bacterial Filtration Groundwater Rna, Ribosomal, 16s Water Purification Methods Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science Discipline Environmental Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Pollution Waste Management and Disposal Health, Toxicology and Mutagenesis Environmental Engineering |
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