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Open AccessArticle

Combined Effects of Compost and Medicago Sativa in Recovery a PCB Contaminated Soil

1
National Research Council, Water Research Institute (IRSA-CNR), Area della Ricerca RM1, Monterotondo, 00015 Rome, Italy
2
National Research Council, Water Research Institute (IRSA-CNR), Viale Francesco de Blasio, 5, 70132 Bari, Italy
3
Università degli Studi di Palermo, Dipartimento Scienze Agrarie e Forestali, Viale delle Scienze, 90128 Palermo, Italy
*
Author to whom correspondence should be addressed.
Water 2020, 12(3), 860; https://doi.org/10.3390/w12030860
Received: 21 January 2020 / Revised: 11 March 2020 / Accepted: 17 March 2020 / Published: 19 March 2020
(This article belongs to the Special Issue Environmental Fate of Contaminants in the Aquatic Environment)
The effectiveness of adding compost and the plant Medicago sativa in improving the quality of a soil historically contaminated by polychlorinated biphenyls (PCBs) was tested in greenhouse microcosms. Plant pots, containing soil samples from an area contaminated by PCBs, were treated with the compost and the plant, separately or together. Moreover, un-treated and un-planted microcosms were used as controls. At fixed times (1, 133 and 224 days), PCBs were analysed and the structure (cell abundance, phylogenetic characterization) and functioning (cell viability, dehydrogenase activity) of the natural microbial community were also measured. The results showed the effectiveness of the compost and plant in increasing the microbial activity, cell viability, and bacteria/fungi ratio, and in decreasing the amount of higher-chlorinated PCBs. Moreover, a higher number of α-Proteobacteria, one of the main bacterial groups involved in the degradation of PCBs, was found in the compost and plant co-presence. View Full-Text
Keywords: plant-assisted bioremediation; microbial structure; microbial functioning; persistent organic pollutants; ELFA; FISH methods plant-assisted bioremediation; microbial structure; microbial functioning; persistent organic pollutants; ELFA; FISH methods
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MDPI and ACS Style

Di Lenola, M.; Barra Caracciolo, A.; Ancona, V.; Laudicina, V.A.; Garbini, G.L.; Mascolo, G.; Grenni, P. Combined Effects of Compost and Medicago Sativa in Recovery a PCB Contaminated Soil. Water 2020, 12, 860.

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