Differential response of Oryza sativa L. and Phragmites australis L. plants in trace elements contaminated soils under flooded and unflooded conditions

Álvarez-Robles, M.J.; Bernal, M.P.; Clemente, Rafael

doi:10.1007/s10653-021-00979-y

Cited by 6 publications

(2 citation statements)

References 44 publications

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“…However, Marchiol et al [34] reported concentrations of Cd, Cu, Pb and Zn in D. viscosa (122, 55.9, 173 and 1172 mg kg −1 , respectively) higher than in the present experiment, and also Melendo et al [35] found concentrations of Pb (307-2084 mg kg −1 ) in plants of this species higher than in the present experiment. The concentration of As in P. australis was within the range of values found by Baroni et al [36] and Álvarez-Robles et al [22] for plants growing in mine soils. Likewise, the TEs concentrations in P. miliaceum plants were very similar to those found by Párraga-Aguado et al [37], Arco-Lázaro et al [38] and Clemente et al [39] in soils from the same mining area.…”

Section: Plant Composition and Calorific Valuesupporting

confidence: 86%

“…The area of study is characterized by an average annual temperature of 17.7 • C with an annual precipitation of <300 mm, with occasional torrential rainfall during late summer or autumn. The average concentrations of the main TEs of the soils for El Gorguel and El Llano del Beal, respectively (mg kg −1 ), are: As 408-664, , Pb 6360-10188, and Zn 12048-9686 [6,22].…”

Section: Plant Sampling and Chemical Analysesmentioning

confidence: 99%

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Potential of the Biomass of Plants Grown in Trace Element-Contaminated Soils under Mediterranean Climatic Conditions for Bioenergy Production

Bernal¹,

Grippi²,

Clemente³

2021

Agronomy

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Phytomanagement of trace element-contaminated soils combines sustainable soil remediation with the use of plant biomass for different applications. Consequently, phytostabilization using plant species useful for bioenergy production has recently received increasing attention. However, the water requirement of most of these species is a limitation for their use under Mediterranean climatic conditions. In this work, eight plant species growing naturally in mine soils contaminated by trace elements were evaluated for their use as bioenergy crops using thermochemical (combustion) and biochemical (anaerobic digestion) methods. The higher heating values of the biomass of the plants studied were all within a narrow range (16.03–18.75 MJ kg−1), while their biochemical methane potentials ranged from 86.0 to 227.4 mL CH4 (g VS)−1. The anaerobic degradation was not influenced by the presence of trace elements in the plants, but the mineral content (mainly Na) negatively affected the potential thermal energy released by combustion (HHV). The highest annual energy yields from biogas or combustion could be obtained by the cultivation of Phragmites australis and Arundo donax, followed by Piptatherum miliaceum. Both options can be considered to be suitable final destinations for the biomass obtained in the phytostabilization of trace element-contaminated soils and may contribute to the implementation of these remediation techniques in Mediterranean areas.

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