Back to Search
Start Over
Lead phytoextraction from printed circuit computer boards by Lolium perenne L. and Medicago sativa L.
- Source :
-
International journal of phytoremediation [Int J Phytoremediation] 2018 Apr 16; Vol. 20 (5), pp. 432-439. - Publication Year :
- 2018
-
Abstract
- This work assessed the ability of Lolium perenne and Medicago sativa for extracting lead (Pb) from particulate printed circuit computer boards (PCB) mixed in sand with the following concentrations: 0.5, 1.0 and 1.5 g of PCB, and including a control treatment without PCB. The PCB were obtained from computers, and grinded in two particle sizes: 0.0594 mm (PCB1) and 0.0706 mm (PCB2). The PCB particle sizes at their corresponding concentrations were applied to L. perenne and M. sativa by using three experimental assays. In assay II, PCB2 affected the biomass production for both plants. For assay III, the PCB1 increased the biomass of M. sativa (236.5%) and L. perenne (142.2%) when applying either 0.5 or 1.0 g, respectively. In regards to phytoextraction, assay I showed the highest Pb-extraction by roots of L. perenne (4.7%) when exposed to 1.5 g of PCB1. At assay I, L. perenne showed a Pb-bioconcentration factor higher than 1.0 when growing at 0.5 g of PCB1, and when HNO <subscript>3</subscript> was used as digestion solution; moreover, in assay III both plants showed a Pb-translocation factor higher than 1.0. Therefore, Lolium perenne and Medicago sativa are able to recover Pb from electronic wastes (PCB).
- Subjects :
- Biodegradation, Environmental
Lead
Medicago sativa
Plant Roots
Lolium
Subjects
Details
- Language :
- English
- ISSN :
- 1549-7879
- Volume :
- 20
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- International journal of phytoremediation
- Publication Type :
- Academic Journal
- Accession number :
- 29053342
- Full Text :
- https://doi.org/10.1080/15226514.2017.1365339