Influence of Composted Wastewater Sludge (CWS) on Lead and Copper Uptake by Radish (Raphanus sativus L.)
| Autor: | Barbara G. Shipes, I. T. Urasa, Kefa Karimu Onchoke |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Ecology
biology Chemistry Extraction (chemistry) Soil Science Raphanus chemistry.chemical_element 04 agricultural and veterinary sciences Fractionation 010501 environmental sciences biology.organism_classification 01 natural sciences Copper Bioavailability Metal visual_art Environmental chemistry 040103 agronomy & agriculture Perlite visual_art.visual_art_medium 0401 agriculture forestry and fisheries Composition (visual arts) Waste Management and Disposal 0105 earth and related environmental sciences |
| Zdroj: | Compost Science & Utilization. 26:244-255 |
| ISSN: | 2326-2397 1065-657X |
| Popis: | The potential risk of increased metal concentrations through the application of composted wastewater sludge (CWS) is of concern. In particular, the high affinity of composted wastewater sludge for metals such as Pb, may influence the extent of metal uptake by plants. In this study, a sequential extraction protocol was employed to determine the fractionation and bioavailability of Pb, Cu, Cr, Cd, Zn, Ni, and Fe in CWS. To evaluate the influence of CWS on metal uptake, a fast growing plant Raphanus sativus L. (cultivated radish), was grown in CWS amended with perlite at four different compositions (0, 25, 50, 75, 100% w/w) treated with Pb and Cu. Plants were harvested after 3 weeks and analyzed for Pb and Cu concentrations. The extent of metal uptake, and intercompetitions between Cu and Pb upon application, at pH 7.3 and 5.8 was also assessed. Best growth was apparent at 25% to 50% (w/w) CWS composition, while an increase in the pH lowered Pb and Cu concentrations in plant tissues. Higher metal con... |
| Databáze: | OpenAIRE |
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