| Title | Phytoremediation strategies for dehydration and quality improvement of a manure digestate sludge |
| Abstract | An artificial pond (about 2.6 hectares and 4 meters depth) was filled with the liquid and solid fine residual fraction from a biogas system located in an agricultural area (Central Italy). The resulting sludge consisted of about 80% of water; the fine fraction (20%) was characterized as: sand 15%, silt 60% and clay 25%, without any significant vertical stratification in the pond. The pH and the electrical conductivity were about 8 and 2.5 mS cm-1, respectively. The heavy metals detected at high concentrations were copper (1200 mg kg-1) and zinc (4000 mg kg-1).
Zoocompost Project, funded by Umbria Region (Italy), aimed to test a green remediation technology for the treatment of this sludge by using phytoremediation and water phytoextraction.
A phytoremediation pilot system was set up in a greenhouse for testing the effectiveness of different plant species and planting methods for sludge dehydration, as well as the quality improvement of the sludge. The tested plants (cuttings or rooted cuttings) were Tamarix gallica, Tamarix africana, Phragmites australis and a combination of Juncus effusus, Iris pseudacorus and Carex gracilis.
The plant growth, the sediment water content, the main physico-chemical parameters and the pathogen occurrence in the sludge (E. coli and Enterobacteriaceae) have been analyzed in the greenhouse experiment. At the same time, the evolution of the microbial community after the plant addition has been evaluated by measuring its abundance, viability, activity (dehydrogenase activity) and diversity (Fluorescence In Situ Hybridization). The results of the first year of experiments are here reported. |
| Source | Environmental protection in a multi-stressed world: challenges for science, industry and regulators, SETAC Europe 25th Annual Meeting, Barcellona, Spain, 3-7 May 2015 |
| Keywords | Zoocompost Projectartificial pondwater phytoextraction |
| Year | 2015 |
| Type | Abstract in atti di convegno |
| Authors | Grenni P, Tariciotti S, Di Lenola M, Barra Caracciolo A, Massacci A, Sconocchia P, Liberati D, De Angelis P |
| Text | 340866 2015 Zoocompost Project artificial pond water phytoextraction Phytoremediation strategies for dehydration and quality improvement of a manure digestate sludge Grenni P, Tariciotti S, Di Lenola M, Barra Caracciolo A, Massacci A, Sconocchia P, Liberati D, De Angelis P IRSA CNR, IBAF CNR, ARPA UMBRIA, UNIV. TUSCIA, VITERBO ABSTRACT BOOK SETAC Europe 25th Annual Meeting SETAC EUROPE Published version https //www.google.it/url sa=t rct=j q= esrc=s source=web cd=1 ved=0ahUKEwjQosqWn5XLAhUPhhoKHSDNCRIQFggcMAA url=https%3A%2F%2Fwww.setac.org%2Fresource%2Fresmgr%2FAbstract_Books%2FSETAC Barcelona abstracts.pdf usg=AFQjCNFiKq3 eo7_qu aexk5Eo6 lQN14g sig2=X0Ah2hE3jjpYCPnz8Sh 5w bvm=bv.115339255,d.d2s cad=rja ISSN 2309 8031 Environmental protection in a multi stressed world challenges for science, industry and regulators, SETAC Europe 25th Annual Meeting Barcellona, Spain 3 7 May 2015 Internazionale Contributo An artificial pond about 2.6 hectares and 4 meters depth was filled with the liquid and solid fine residual fraction from a biogas system located in an agricultural area Central Italy . The resulting sludge consisted of about 80% of water; the fine fraction 20% was characterized as sand 15%, silt 60% and clay 25%, without any significant vertical stratification in the pond. The pH and the electrical conductivity were about 8 and 2.5 mS cm 1, respectively. The heavy metals detected at high concentrations were copper 1200 mg kg 1 and zinc 4000 mg kg 1 . Zoocompost Project, funded by Umbria Region Italy , aimed to test a green remediation technology for the treatment of this sludge by using phytoremediation and water phytoextraction. A phytoremediation pilot system was set up in a greenhouse for testing the effectiveness of different plant species and planting methods for sludge dehydration, as well as the quality improvement of the sludge. The tested plants cuttings or rooted cuttings were Tamarix gallica, Tamarix africana, Phragmites australis and a combination of Juncus effusus, Iris pseudacorus and Carex gracilis. The plant growth, the sediment water content, the main physico chemical parameters and the pathogen occurrence in the sludge E. coli and Enterobacteriaceae have been analyzed in the greenhouse experiment. At the same time, the evolution of the microbial community after the plant addition has been evaluated by measuring its abundance, viability, activity dehydrogenase activity and diversity Fluorescence In Situ Hybridization . The results of the first year of experiments are here reported. Abstract Book SETAC_Barcelona_abstracts_1.pdf Abstract in atti di convegno anna.barracaracciolo BARRA CARACCIOLO ANNA paola.grenni GRENNI PAOLA angelo.massacci MASSACCI ANGELO TA.P04.005.011 Vulnerabilita degli ecosistemi delle acque sotterranee e attenuazione naturale degli inquinanti nel suolo e nel sottosuolo |
