| Title | Landfill wall revegetation combined with leachate recirculation: A convenient procedure for management of closed landfills |
| Abstract | There is a need for a reliable sustainable option to effectively manage the landfill leachate generation. This study presents a simple procedure for the revegetation of the walls of closed landfills, employing the leachate as a fertirrigant. The native plants Lepidium sativum, Lactuca sativa, and Atriplex halimus, which suit the local climate, were chosen for this study in Southern Italy. The methodology was structured into three phases (i) early stage toxicity assessment phase (apical root length and germination tests), (ii) adult plant resistance assessment phase, and (iii) soil properties verification phase. The rationale of the proposed approach was first to look at the distinctive qualities and the potential toxicity in landfill leachates for fertigation purposes. Afterwards, through specific tests, the plants used were ranked in terms of resistance to the aqueous solution that contained leachate. Finally, after long-term irrigation, any possible worsening of soil properties was evaluated. The results demonstrated the real possibility of using blended leachate as a fertigant for the revegetation of the walls of closed landfills. In particular, the plants maintained good health when leachate was blended at concentrations of lower than 25 and 5 %, respectively for A. halimus and Lepidium sativum. Irrigation tests showed good resistance of the plants, even at dosages of 112 and 133.5 mm m(-2), at maximum concentrations of 25 and 5 %, respectively, for A. halimus and Lepidium sativum. The analysis of the total chlorophyll content and of aerial parts dried weight confirmed the results reported above. |
| Source | Environmetal science and pollution research international (Internet) 21 (15), pp. 9366–9375 |
| Keywords | Atriplex halimusClosed landfillFertirrigationLactuca sativaLandfill leachateLepidium sativum |
| Journal | Environmetal science and pollution research international (Internet) |
| Editor | Springer, Berlin, Germania |
| Year | 2014 |
| Type | Articolo in rivista |
| DOI | 10.1007/s11356-014-2878-8 |
| Authors | Del Moro G.; Barca E.; Cassano D.; Di Iaconi C.; Mascolo G.; Brunetti G. |
| Text | 298356 2014 10.1007/s11356 014 2878 8 Scopus 2 s2.0 84905716122 Atriplex halimus Closed landfill Fertirrigation Lactuca sativa Landfill leachate Lepidium sativum Landfill wall revegetation combined with leachate recirculation A convenient procedure for management of closed landfills Del Moro G.; Barca E.; Cassano D.; Di Iaconi C.; Mascolo G.; Brunetti G. Istituto di Ricerca Sulle Acque, Consiglio Nazionale delle Ricerche, Viale F. De Blasio 5, 70132 Bari, BA, Italy; Di.SSPA Dipartimento di Scienze Suolo, della Pianta e degli Alimenti, Universita degli Studi di Bari, Via Amendola 165/A, 70126 Bari, BA, Italy There is a need for a reliable sustainable option to effectively manage the landfill leachate generation. This study presents a simple procedure for the revegetation of the walls of closed landfills, employing the leachate as a fertirrigant. The native plants Lepidium sativum, Lactuca sativa, and Atriplex halimus, which suit the local climate, were chosen for this study in Southern Italy. The methodology was structured into three phases i early stage toxicity assessment phase apical root length and germination tests , ii adult plant resistance assessment phase, and iii soil properties verification phase. The rationale of the proposed approach was first to look at the distinctive qualities and the potential toxicity in landfill leachates for fertigation purposes. Afterwards, through specific tests, the plants used were ranked in terms of resistance to the aqueous solution that contained leachate. Finally, after long term irrigation, any possible worsening of soil properties was evaluated. The results demonstrated the real possibility of using blended leachate as a fertigant for the revegetation of the walls of closed landfills. In particular, the plants maintained good health when leachate was blended at concentrations of lower than 25 and 5 %, respectively for A. halimus and Lepidium sativum. Irrigation tests showed good resistance of the plants, even at dosages of 112 and 133.5 mm m 2 , at maximum concentrations of 25 and 5 %, respectively, for A. halimus and Lepidium sativum. The analysis of the total chlorophyll content and of aerial parts dried weight confirmed the results reported above. 21 Published version http //www.scopus.com/inward/record.url eid=2 s2.0 84905716122 partnerID=q2rCbXpz Articolo in rivista Springer 1614 7499 Environmetal science and pollution research international Internet Environmetal science and pollution research international Internet Environ. sci. pollut. res. int. Internet Environmental science and pollution research international. Internet Environmental science and pollution research Internet Internet ESPR Internet Internet claudio.diiaconi DI IACONI CLAUDIO emanuele.barca BARCA EMANUELE giuseppe.mascolo MASCOLO GIUSEPPE TA.P04.005.008 Integrazione di metodologie per il monitoraggio e la modellizzazione per la gestione delle risorse idriche |
