PMID- 30029323 OWN - NLM STAT- MEDLINE DCOM- 20181012 LR - 20181012 IS - 1873-6424 (Electronic) IS - 0269-7491 (Linking) VI - 241 DP - 2018 Oct TI - Improving the SoilPlusVeg model to evaluate rhizoremediation and PCB fate in contaminated soils. PG - 1138-1145 LID - S0269-7491(18)31602-6 [pii] LID - 10.1016/j.envpol.2018.06.039 [doi] AB - Tools to predict environmental fate processes during remediation of persistent organic pollutants (POPs) in soil are desperately needed since they can elucidate the overall behavior of the chemical and help to improve the remediation process. A dynamic multimedia fate model (SoilPlusVeg) was further developed and improved to account for rhizoremediation processes. The resulting model was used to predict Polychlorinated Biphenyl (PCB) fate in a highly contaminated agricultural field (1089 ng/g d.w.) treated with tall fescue (Festuca arundinacea), a promising plant species for the remediation of contaminated soils. The model simulations allowed to calculate the rhizoremediation time (about 90 years), given the available rhizoremediation half-lives and the levels and fingerprints of the PCB congeners, to reach the legal threshold, to show the relevance of the loss processes from soil (in order of importance: degradation, infiltration, volatilization, etc.) and their dependence on meteorological and environmental dynamics (temperature, rainfall, DOC concentrations). The simulations showed that the effective persistence of PCBs in soil is deeply influenced by the seasonal variability. The model also allowed to evaluate the role of DOC as a possible enhancer of PCB degradation as a microorganism "spoon feeder" of PCBs in the soil solution. Additionally, we preliminary predicted how the contribution of PCB metabolites could modify the PCB fingerprint and their final total concentrations. This shows that the SoilPlusVeg model could be used in selecting the best choices for a sustainable rhizoremediation of a POP contaminated site. CI - Copyright (c) 2018 Elsevier Ltd. All rights reserved. FAU - Terzaghi, Elisa AU - Terzaghi E AD - Department of Science and High Technology (DiSAT), University of Insubria, Via Valleggio 11, Como, Italy. Electronic address: elisa.terzaghi@uninsubria.it. FAU - Morselli, Melissa AU - Morselli M AD - Department of Science and High Technology (DiSAT), University of Insubria, Via Valleggio 11, Como, Italy. Electronic address: melissa.morselli@uninsubria.it. FAU - Zanardini, Elisabetta AU - Zanardini E AD - Department of Science and High Technology (DiSAT), University of Insubria, Via Valleggio 11, Como, Italy. Electronic address: elisabetta.zanardini@uninsubria.it. FAU - Morosini, Cristiana AU - Morosini C AD - Department of Science and High Technology (DiSAT), University of Insubria, Via Valleggio 11, Como, Italy. Electronic address: cristiana.morosini@uninsubria.it. FAU - Raspa, Giuseppe AU - Raspa G AD - Department of Chemical Materials Environmental Engineering (DICMA), Sapienza University of Rome, Via Eudossiana 18, Rome, Italy. Electronic address: giuseppe.raspa@uniroma1.it. FAU - Di Guardo, Antonio AU - Di Guardo A AD - Department of Science and High Technology (DiSAT), University of Insubria, Via Valleggio 11, Como, Italy. Electronic address: antonio.diguardo@uninsubria.it. LA - eng PT - Journal Article DEP - 20180618 PL - England TA - Environ Pollut JT - Environmental pollution (Barking, Essex : 1987) JID - 8804476 RN - 0 (Soil) RN - 0 (Soil Pollutants) RN - DFC2HB4I0K (Polychlorinated Biphenyls) SB - IM MH - Environmental Monitoring/*methods MH - Environmental Pollution MH - Festuca/chemistry MH - *Models, Chemical MH - Polychlorinated Biphenyls/*analysis MH - Soil/chemistry MH - Soil Pollutants/*analysis MH - Vegetables/*chemistry OTO - NOTNLM OT - Bioavailability OT - DOC OT - Half-lives OT - PCBs OT - Soil EDAT- 2018/07/22 06:00 MHDA- 2018/10/13 06:00 CRDT- 2018/07/22 06:00 PHST- 2018/04/10 00:00 [received] PHST- 2018/05/25 00:00 [revised] PHST- 2018/06/12 00:00 [accepted] PHST- 2018/07/22 06:00 [entrez] PHST- 2018/07/22 06:00 [pubmed] PHST- 2018/10/13 06:00 [medline] AID - S0269-7491(18)31602-6 [pii] AID - 10.1016/j.envpol.2018.06.039 [doi] PST - ppublish SO - Environ Pollut. 2018 Oct;241:1138-1145. doi: 10.1016/j.envpol.2018.06.039. Epub 2018 Jun 18.