Phytoextraction from Chromium-Contaminated Soil Using Moso Bamboo in Mediterranean Conditions
- PDF / 1,579,811 Bytes
- 12 Pages / 547.087 x 737.008 pts Page_size
- 58 Downloads / 223 Views
Phytoextraction from Chromium-Contaminated Soil Using Moso Bamboo in Mediterranean Conditions Ezio Ranieri & Angelo Tursi & Silvia Giuliano & Vincenzo Spagnolo & Ada Cristina Ranieri & Andrea Petrella
Received: 3 April 2020 / Accepted: 13 July 2020 # The Author(s) 2020
Abstract An experimentation has been carried out in simulated Mediterranean and tropical laboratory conditions aimed to show the Moso bamboo capability of phytoextraction chromium from contaminated soil. Electronic microscopy supported the analyses performed on soil and on the different plant tissues. A preliminary test on the bamboo has been carried out in laboratory evaluating his growth with irrigation in Mediterranean conditions (600 mm/year) and tropical conditions (1.800 mm/year). A test of the bamboo tolerance of was also carried out by measuring his growth with irrigation with a solution of 100 mg Cr/l, reporting not significant damages to the plant tissues. Subsequently chromium phytoextraction was tested highlighting that bamboo removes Cr from soil with a percentage ranging from 43% (600 mm/year) to 47.4% (1.800 mm/year) of the total content in soil. Lastly, the distribution of chromium in the different fragments of the bamboo plants has been performed. It has been shown that approx. 69% of chromium, in Mediterranean conditions, was in the rhizomes and approx. 68% in tropical conditions. A E. Ranieri (*) : A. Tursi : S. Giuliano Dipartimento di Biologia, Università degli Studi di Bari, Bari, Italy e-mail: [email protected] V. Spagnolo Dipartimento di Fisica, Politecnico di Bari, Bari, Italy A. C. Ranieri Faculty of Engineering, Uninettuno University, Rome, Italy A. Petrella Dicatech, Politecnico di Bari, Bari, Italy
slightly higher tendency to chromium translocation to leaves has been shown in tropical conditions than in Mediterranean conditions. Keywords Bamboo growth . Tolerance . Chromium removal . Metals translocation
1 Introduction Phytoremediation can be applied both in the presence of inorganic contaminants, such as heavy metals, through extraction or stabilization processes, and in the presence of organic contaminants, through degradation or extraction processes (Gardea-Torresdey et al. 2004; Anderson et al. 2005; Karimi et al. 2009; Ranieri et al. 2013; Petrella et al. 2016; Ranieri et al. 2020). Phytoextraction, which can be defined as the use of plants to remove non-degradable contaminants from the soil, is considered a green technology that can be applied to some heavy metals (McGrath et al. 2006; Reeves and Baker 2009; Tangahu et al. 2011; Petrella et al. 2012; Gikas and Ranieri 2014; AlBataina et al. 2016; Petrella et al. 2016a, b; Petrella et al. 2018). This remediation is applied in situ, and therefore, it does not require any excavation, transport, and disposal of soil; its main aim is to maintain, restore, or even improve the physical-chemical properties of the soil. Furthermore, it is advantageous both from an ecological point of view, due to its environmental value, and from the economic one, since the costs are
Data Loading...
