Sustainable Ecological Restoration of Sterile Dumps Using Robinia pseudoacacia

Adriana Mihaela Chirilă Băbău, Valer Micle, Gianina Elena Damian and Ioana Monica Sur
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Adriana Mihaela Chirilă Băbău: Department of Environmental Engineering and Sustainable Development Entrepreneurship, Faculty of Materials and Environmental Engineering, Technical University of Cluj Napoca, 400641 Cluj Napoca, Romania
Valer Micle: Department of Environmental Engineering and Sustainable Development Entrepreneurship, Faculty of Materials and Environmental Engineering, Technical University of Cluj Napoca, 400641 Cluj Napoca, Romania
Gianina Elena Damian: Department of Cadaster, Civil and Environmental Engineering, “1 Decembrie 1918” University of Alba Iulia, 510009 Alba Iulia, Romania
Ioana Monica Sur: Department of Environmental Engineering and Sustainable Development Entrepreneurship, Faculty of Materials and Environmental Engineering, Technical University of Cluj Napoca, 400641 Cluj Napoca, Romania

Sustainability, 2021, vol. 13, issue 24, 1-15

Abstract: The feasibility of using Robinia pseudoacacia in phytoremediation of sterile dumps was determined. The potential of Robinia pseudoacacia seeds to grow in a medium contaminated with high concentrations of Pb, Cd, and Cu was firstly evaluated by applying germination tests on acacia seeds in the presence of various extractants prepared by mixtures of sterile material (SM) collected from the “Radeș” dump (Romania), calcium carbonate (CaCO 3 ) and dehydrated sludge (DS) from Someș Water Treatment Plant (Cluj Napoca, Romania), fertilizer (N.P.K.), and potassium monobasic phosphate (KH 2 PO 4 -99.5%). The results indicated that Robinia pseudoacacia seeds grow much better in an acidic than in a neutral medium and in the absence of carbonates. The capacity of metal uptake from SM by Robinia pseudoacacia and the development of the plants were then investigated at the laboratory scale. During the phytoremediation process, 92.31% of Cu was removed from SM, and the development of the Robinia pseudoacacia plants was favorable. However, although the results of the present study indicated that Robinia pseudoacacia can be successfully used in the phytoremediation of sterile dumps, making a sustainable decision for the current situation of sterile dumps located in mining areas may be difficult because an optimal point between people, profit, planet, and diverse ethical views must be found.

Keywords: sustainable restoration; phytoremediation; sterile dumps; seed germination (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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