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This study performed a Life Cycle Assessment (LCA) on recovery strategies of dredged contaminated marine sediments in a large Mediterranean port located in central Italy (Tuscany) in order to find the most environmentally sound solution. The study considered marine sediments polluted by potentially toxic elements (PTEs) and/or organic compounds, two different sediment particle sizes and the combined use of three soil remediation technologies: soil washing, electrokinetic treatment and enhanced landfarming. The analyzed scenarios depended on the sediment properties and characteristics of the treatment technologies investigated, and were compared with the corresponding reference scenarios, consisting of the landfilling of dredged contaminated sediments. The LCA results show that scenarios associated with sediment recovery generated potential environmental impacts lower than the corresponding reference scenarios. Almost all the impact categories considered in the CML-IA baseline method showed an environmental convenience in the recovery of contaminated sediments, especially for abiotic depletion and global warming. Future studies should focus on optimizing the combined use of multiple technologies and reducing the resource consumptions related to their implementation in order to achieve both environmental and economic benefits.
Francesco Pasciucco; Isabella Pecorini; Simona Di Gregorio; Fabiano Pilato; Renato Iannelli. Recovery Strategies of Contaminated Marine Sediments: A Life Cycle Assessment. Sustainability 2021, 13, 8520 .
AMA StyleFrancesco Pasciucco, Isabella Pecorini, Simona Di Gregorio, Fabiano Pilato, Renato Iannelli. Recovery Strategies of Contaminated Marine Sediments: A Life Cycle Assessment. Sustainability. 2021; 13 (15):8520.
Chicago/Turabian StyleFrancesco Pasciucco; Isabella Pecorini; Simona Di Gregorio; Fabiano Pilato; Renato Iannelli. 2021. "Recovery Strategies of Contaminated Marine Sediments: A Life Cycle Assessment." Sustainability 13, no. 15: 8520.
This study investigates the influence of moisture content on the potential oxidation efficiency of methane (CH4) of biofiltration systems treating landfill gas containing high oxygen concentrations. Column tests filled with compost with different moisture contents (20%, 30%, and 40%) loaded with different methane flows were set up on a laboratory scale. Analyzing the results the following evidences can be summarized: With low methane load (<100 g CH4 m−2 d−1), a moisture content of 20% was not enough to support bacterial activity, while a moisture content of 40% advantaged the compost respiration assisting it to become the dominating process; with higher methane load (100–300 g CH4 m−2 d−1), a moisture content of 30% resulted in an optimal value to support methanotrophic activity showing the highest CH4 concentration reduction; moving on to a CH4 load above 300 g CH4 m−2 d−1, the inhibition of methanotrophic activity emerged independently to the moisture content of the filter media. The optimal configuration is obtained for a moisture content of 30% and in the case of flows below 200 g CH4 m−2 d−1 for which the oxidation efficiency results higher than 80%.
Niccolò Frasi; Elena Rossi; Isabella Pecorini; Renato Iannelli. Methane Oxidation Efficiency in Biofiltration Systems with Different Moisture Content Treating Diluted Landfill Gas. Energies 2020, 13, 2872 .
AMA StyleNiccolò Frasi, Elena Rossi, Isabella Pecorini, Renato Iannelli. Methane Oxidation Efficiency in Biofiltration Systems with Different Moisture Content Treating Diluted Landfill Gas. Energies. 2020; 13 (11):2872.
Chicago/Turabian StyleNiccolò Frasi; Elena Rossi; Isabella Pecorini; Renato Iannelli. 2020. "Methane Oxidation Efficiency in Biofiltration Systems with Different Moisture Content Treating Diluted Landfill Gas." Energies 13, no. 11: 2872.
Emissions from daily and final covers of municipal solid waste (MSW) landfills can produce significant impacts on local and global environments. Simplifying, landfills can cause local impacts with odor emissions and global impacts with GHGs. This work focuses on hydrogen sulfide (H2S) and methane (CH4) emissions, with the aim of studying how it is possible to reduce their impacts by means of biofiltration systems. Both field and laboratory investigations have been carried out in Casa Rota Landfill (Tuscany, Italy). In the field trials, four pilot-scale biocovers made of compost from a source-selected organic fraction (SS compost), compost from a mechanical biological treatment plant—the residual fractions of the MSW, a mixed compost (SS-MSW compost) and sand were monitored in the daily cover area of the landfill, where high emissions were detected. Results showed that high CH4 and H2S emissions reductions occurred in the mixed SS-MSW compost plot, given a maximum methane oxidation efficiency of greater than 98% and an average oxidation efficiency of about 75%. To assess the specific oxidation rate, laboratory tests using SS-MSW compost sampled from the biocovers were done.
Isabella Pecorini; Renato Iannelli. Landfill GHG Reduction through Different Microbial Methane Oxidation Biocovers. Processes 2020, 8, 591 .
AMA StyleIsabella Pecorini, Renato Iannelli. Landfill GHG Reduction through Different Microbial Methane Oxidation Biocovers. Processes. 2020; 8 (5):591.
Chicago/Turabian StyleIsabella Pecorini; Renato Iannelli. 2020. "Landfill GHG Reduction through Different Microbial Methane Oxidation Biocovers." Processes 8, no. 5: 591.
Biofiltration systems are emerging technological solutions for the removal of methane and odors from landfill gas when flaring is no longer feasible. This work analyzed and compared two full-scale biofiltration systems: biofilter and biowindows. The emission mitigation of methane, non-methane volatile organic compounds (NMVOCs) and odors during a two-year management and monitoring period was studied. In addition to diluted methane, more than 50 NMVOCs have been detected in the inlet raw landfill gas and the sulfur compounds resulted in the highest odor activity value. Both systems, biofilter and biowindows, were effective for the oxidation of methane (58.1% and 88.05%, respectively), for the mitigation of NMVOCs (higher than 80%) and odor reduction (99.84% and 93.82% respectively). As for the biofilter monitoring, it was possible to define the oxidation efficiency trend and in fact to guarantee that for an oxidation efficiency of 80%, the methane load must be less than 6.5 g CH4/m2h with an oxidation rate of 5.2 g CH4/m2h.
Isabella Pecorini; Elena Rossi; Renato Iannelli. Mitigation of Methane, NMVOCs and Odor Emissions in Active and Passive Biofiltration Systems at Municipal Solid Waste Landfills. Sustainability 2020, 12, 3203 .
AMA StyleIsabella Pecorini, Elena Rossi, Renato Iannelli. Mitigation of Methane, NMVOCs and Odor Emissions in Active and Passive Biofiltration Systems at Municipal Solid Waste Landfills. Sustainability. 2020; 12 (8):3203.
Chicago/Turabian StyleIsabella Pecorini; Elena Rossi; Renato Iannelli. 2020. "Mitigation of Methane, NMVOCs and Odor Emissions in Active and Passive Biofiltration Systems at Municipal Solid Waste Landfills." Sustainability 12, no. 8: 3203.
In order to obtain a product with agronomic characteristics and biological stability consistent with the EU fertilizer decree for the market of EU fertilising products three different mixtures obtained from sludge digestate from municipal wastewater treatment plant, fresh compost and mature compost have been studied and characterized. For the experimental activity, the raw samples and three mixing ones were collected for the analytical characterization. The biological stability was then assessed for all samples using different stability criteria such as Specific Oxygen Uptake Rate, Rottegrad self-heating factor, Residual biogas potential. Specific enzymatic tests provided information about the status of nutrient cycles (C, P and S) and to overall microbial activity. Physical (bulk density, particle density, air capacity and water content), nutritional (C, N, P, K, Mg, and Ca) and toxicological properties (seedling growth tests on Lepidum sativum L., Cucumis sativus L., Lolium perenne L.) were also evaluated in order to assess the feasibility of agronomic use of the digestate-based mixtures. All the digestate-based mixtures responded to the main characteristics of compost quality requirements proposed in national and international regulations. The evidence found in this study highlighted that the strategy of mixing of sludge digestates with the composts allowed to mitigate the environmental risk posed by each starting material and to valorize their nutrient content.
Isabella Pecorini; Eleonora Peruzzi; Elena Albini; Serena Doni; Cristina Macci; Grazia Masciandaro; Renato Iannelli. Evaluation of MSW Compost and Digestate Mixtures for a Circular Economy Application. Sustainability 2020, 12, 3042 .
AMA StyleIsabella Pecorini, Eleonora Peruzzi, Elena Albini, Serena Doni, Cristina Macci, Grazia Masciandaro, Renato Iannelli. Evaluation of MSW Compost and Digestate Mixtures for a Circular Economy Application. Sustainability. 2020; 12 (7):3042.
Chicago/Turabian StyleIsabella Pecorini; Eleonora Peruzzi; Elena Albini; Serena Doni; Cristina Macci; Grazia Masciandaro; Renato Iannelli. 2020. "Evaluation of MSW Compost and Digestate Mixtures for a Circular Economy Application." Sustainability 12, no. 7: 3042.
In order to study the quality of organic fractions of municipal solid waste (OFMSW), five different municipalities in Tuscany were chosen for sampling according to the peculiarities of their collection systems. The five collection systems selected were sampled four times: during March, June, September and December, for a total of 20 picking analyses. In addition, emphasis was also given to the study of the variability of OFMSW composition related to ultimate, proximate and bromatological analyses. Road container collection systems proved to have a higher content of non-compostable and undesirable fractions (22%±1%) when compared to door-to-door systems (6% ± 1%). During months with lower temperature (March and December), the garden waste content in the OFMSW was negligible, with kitchen waste prevailing. This altered the physical chemical composition of OFMSW, which had a lower lignin content and higher methane production in the months with lower temperatures (272 ± 23 NLCH4 kgTVS−1) compared to June and September (238 ± 14 NLCH4 kgTVS−1). In general, the Tuscan OFMSW had a higher dry matter content (42%) than observed in previous studies. In conclusion, the result could direct possible future operators of anaerobic digestion plants towards the choice of dry and semi-dry technologies.
Isabella Pecorini; Elena Rossi; Renato Iannelli. Bromatological, Proximate and Ultimate Analysis of OFMSW for Different Seasons and Collection Systems. Sustainability 2020, 12, 2639 .
AMA StyleIsabella Pecorini, Elena Rossi, Renato Iannelli. Bromatological, Proximate and Ultimate Analysis of OFMSW for Different Seasons and Collection Systems. Sustainability. 2020; 12 (7):2639.
Chicago/Turabian StyleIsabella Pecorini; Elena Rossi; Renato Iannelli. 2020. "Bromatological, Proximate and Ultimate Analysis of OFMSW for Different Seasons and Collection Systems." Sustainability 12, no. 7: 2639.
Two pilot-scale tests were carried out to assess if biodrying could be an effective process for the treatment of light fraction produced by an hydromechanical pre-treatment in an anaerobic digestion plant. The trials were performed using two pilot-scale stainless steel cylindrical reactors of 750 L capacity. Two tests were performed: in Test 1, only the light fraction was used; in Test 2, the light fraction was mixed with a bulking agent composed of garden and pruning waste. In Test 2, the highest temperature (71 °C) in a short time (8 days) was reached. An average water content reduction of 78% in Test 1 and 61% in Test 2 was measured, leading to similar reductions of weight (47–48%) and volume (27–29%). A high biological stability was measured on the final light fraction samples collected from both the tests. Furthermore, the lower heating value obtained after the biodrying treatment complies with the quality specification of the European standard on refuse-derived fuels.
Isabella Pecorini; Donata Bacchi; Renato Iannelli. Biodrying of the Light Fraction from Anaerobic Digestion Pretreatment in Order to Increase the Total Recovery Rate. Processes 2020, 8, 276 .
AMA StyleIsabella Pecorini, Donata Bacchi, Renato Iannelli. Biodrying of the Light Fraction from Anaerobic Digestion Pretreatment in Order to Increase the Total Recovery Rate. Processes. 2020; 8 (3):276.
Chicago/Turabian StyleIsabella Pecorini; Donata Bacchi; Renato Iannelli. 2020. "Biodrying of the Light Fraction from Anaerobic Digestion Pretreatment in Order to Increase the Total Recovery Rate." Processes 8, no. 3: 276.
With the aim of examining the forcing factors in postmanagement landfills, in this study, excavation waste from nonhazardous municipal waste landfill in Tuscany was characterized for the first time. The specific objective was to estimate the feasibility of sampling and analyzing the excavated waste in order to define its properties and provide information about possible landfill mining projects. Based on the biochemical methane potential assays, it was shown that the excavated waste had not yet been stabilized (i.e., with a production of 52.2 ± 28.7 NlCH4/kgTS) in the landfill, probably due to the low excavated waste moisture content (36% ± 6% w/w). Furthermore, excavated waste has a high calorific value, i.e., 15.2 ± 4.1 MJ/kg; the quantity of combustibles in the industrial shredder waste (16 MJ/kg) was rather modest compared to that of municipal solid waste (20.8 MJ/Kg). In conclusion, during large scale excavation of the landfill, it was possible to evaluate how a dedicated treatment plant could be designed to treat and select waste which might appear in a different category. For excavated industrial waste, detailed mechanical sorting may be convenient for end-of-waste recovery to improve calorific value.
Isabella Pecorini; Renato Iannelli. Characterization of Excavated Waste of Different Ages in View of Multiple Resource Recovery in Landfill Mining. Sustainability 2020, 12, 1780 .
AMA StyleIsabella Pecorini, Renato Iannelli. Characterization of Excavated Waste of Different Ages in View of Multiple Resource Recovery in Landfill Mining. Sustainability. 2020; 12 (5):1780.
Chicago/Turabian StyleIsabella Pecorini; Renato Iannelli. 2020. "Characterization of Excavated Waste of Different Ages in View of Multiple Resource Recovery in Landfill Mining." Sustainability 12, no. 5: 1780.
In this study, the co-digestion of food waste and activated sludge was evaluated in a two-stage anaerobic system and compared to the traditional single-stage process. The two-stage system was composed by two reactors connected in series able to perform the fermentative and the methanogenic phases separated. Experiments were carried out in semi-continuous mode under mesophilic conditions (37 °C). The two-stage technology achieved an overall improvement of the anaerobic performances. Results highlighted an increase in biogas production and volatile solids degradation of 26% and 9%, respectively. Considering the whole two-stage system, i.e. the sum of the biogas productions of the first and the second digester, these percentages increased up to 35.0%. Concerning gas quality, the two-stage system achieved a hydrogen rich biogas in the first fermentative reactor and an improvement of methane content in the second methanogenic digester. The average methane content shifted from 61.2% to 70.1%. The highest methane production of the two-stage process was due to improved substrate hydrolysis, with increased amounts of volatile fatty acids made readily available in the second stage.
F. Baldi; I. Pecorini; R. Iannelli. Comparison of single-stage and two-stage anaerobic co-digestion of food waste and activated sludge for hydrogen and methane production. Renewable Energy 2019, 143, 1755 -1765.
AMA StyleF. Baldi, I. Pecorini, R. Iannelli. Comparison of single-stage and two-stage anaerobic co-digestion of food waste and activated sludge for hydrogen and methane production. Renewable Energy. 2019; 143 ():1755-1765.
Chicago/Turabian StyleF. Baldi; I. Pecorini; R. Iannelli. 2019. "Comparison of single-stage and two-stage anaerobic co-digestion of food waste and activated sludge for hydrogen and methane production." Renewable Energy 143, no. : 1755-1765.
A mathematical model for reactive-transport processes in porous media is presented. The modeled system includes diffusion, electromigration and electroosmosis as the most relevant transport mechanism and water electrolysis at the electrodes, aqueous species complexation, precipitation and dissolution as the chemical reactions taken place during the treatment time. The model is based on the local chemical equilibrium for most of the reversible chemical reactions occurring in the process. As a novel enhancement of previous models, the local chemical equilibrium reactive-transport model is combined with the solution of the transient equations for the kinetics of those chemical reactions that have representative rates in the same order than the transport mechanisms. The model is validated by comparison of simulation and experimental results for an acid-enhanced electrokinetic treatment of a real Pb-contaminated calcareous soil. The kinetics of the main pH buffering process, the calcite dissolution, was defined by a simplified empirical kinetic law. Results show that the evaluation of kinetic rate entails a significant improvement of the model prediction capability.
Matteo Masi; Juan Manuel Paz-Garcia; Cesar Gomez-Lahoz; Maria Villen-Guzman; Alessio Ceccarini; Renato Iannelli. Modeling of electrokinetic remediation combining local chemical equilibrium and chemical reaction kinetics. Journal of Hazardous Materials 2019, 371, 728 -733.
AMA StyleMatteo Masi, Juan Manuel Paz-Garcia, Cesar Gomez-Lahoz, Maria Villen-Guzman, Alessio Ceccarini, Renato Iannelli. Modeling of electrokinetic remediation combining local chemical equilibrium and chemical reaction kinetics. Journal of Hazardous Materials. 2019; 371 ():728-733.
Chicago/Turabian StyleMatteo Masi; Juan Manuel Paz-Garcia; Cesar Gomez-Lahoz; Maria Villen-Guzman; Alessio Ceccarini; Renato Iannelli. 2019. "Modeling of electrokinetic remediation combining local chemical equilibrium and chemical reaction kinetics." Journal of Hazardous Materials 371, no. : 728-733.
Four inocula collected from different operating facilities were tested in their hydrogenic performances by means of two biochemical hydrogen potential test set-ups using sucrose and food waste as substrates, with the aim of evaluating the influence of inoculum media in batch fermentative assays. The selected inocula were: activated sludge collected from the aerobic unit of a municipal wastewater treatment plant, digested sludge from an anaerobic reactor treating organic waste and cattle manure, digested sludge from an anaerobic reactor treating agroindustrial residues, and digested sludge from an anaerobic reactor of a municipal wastewater treatment plant. Test results, in terms of specific hydrogen production, hydrogen conversion efficiency, and volatile solids removal efficiency, were significantly dependent on the type of inoculum. Statistical analysis showed different results, indicating that findings were due to the different inocula used in the tests. In particular, assays performed with activated sludge showed the highest performances for both substrates and both experimental set-ups.
Isabella Pecorini; Francesco Baldi; Renato Iannelli. Biochemical Hydrogen Potential Tests Using Different Inocula. Sustainability 2019, 11, 622 .
AMA StyleIsabella Pecorini, Francesco Baldi, Renato Iannelli. Biochemical Hydrogen Potential Tests Using Different Inocula. Sustainability. 2019; 11 (3):622.
Chicago/Turabian StyleIsabella Pecorini; Francesco Baldi; Renato Iannelli. 2019. "Biochemical Hydrogen Potential Tests Using Different Inocula." Sustainability 11, no. 3: 622.
Sediments dredged by an industrial port, slightly contaminated by heavy metals and petroleoum hydrocarbons, were phytoremediated and used as peat-free growing media for the red robin photinia (Photinia x fraseri L.). Plants were grown on sediment only (S), sediment mixed with composted pruning residues (S+PR), sediment fertilized with controlled release fertilizers (S+F) and peat-based growing media as control (C). Plant elongation and dry weight, leaf contents of chlorophyll, malondialdehyde (MDA), macronutrients and heavy metals were determined at the end of one growing season. Environmental impact related to the use of sediment-based as compared to peat-based growing media was assessed by the Life Cycle Analysis (LCA). Sediment-based growing media presented significantly higher bulk density, pH and electrical conductivity values, lower C and N contents, and significantly higher total and available P. Red robin photinia grown on S+F growing media showed morphological and chemical parameters similar to those of control plants (C), whereas plants grown on S and S+PR showed lower growth. Leaf concentration of nutrients and heavy metals varied depending on the considered element and growing media, but were all within the common values for ornamental plants, whereas the highest MDA concentrations were found in plants grown on traditional growing media. The LCA indicated the use of sediments as growing media reduced the C footprint of ornamental plant production and the contribute of growing media to the environmental impact per produced plant. We concluded that sediments phytoremediation and use in plant nursery is a practical alternative re-use option for dredged sediments.
Paola Mattei; Alessandro Gnesini; Cristina Gonnelli; Chiara Marraccini; Grazia Masciandaro; Cristina Macci; Serena Doni; Renato Iannelli; Stefano Lucchetti; Francesco P. Nicese; Giancarlo Renella. Phytoremediated marine sediments as suitable peat-free growing media for production of red robin photinia (Photinia x fraseri). Chemosphere 2018, 201, 595 -602.
AMA StylePaola Mattei, Alessandro Gnesini, Cristina Gonnelli, Chiara Marraccini, Grazia Masciandaro, Cristina Macci, Serena Doni, Renato Iannelli, Stefano Lucchetti, Francesco P. Nicese, Giancarlo Renella. Phytoremediated marine sediments as suitable peat-free growing media for production of red robin photinia (Photinia x fraseri). Chemosphere. 2018; 201 ():595-602.
Chicago/Turabian StylePaola Mattei; Alessandro Gnesini; Cristina Gonnelli; Chiara Marraccini; Grazia Masciandaro; Cristina Macci; Serena Doni; Renato Iannelli; Stefano Lucchetti; Francesco P. Nicese; Giancarlo Renella. 2018. "Phytoremediated marine sediments as suitable peat-free growing media for production of red robin photinia (Photinia x fraseri)." Chemosphere 201, no. : 595-602.
The potential spread of pollutants stored in environmental hotspots such as wastewater treatment plants, waste handling facilities, contaminated sites, etc., is among the adverse consequences of floods. This aspect has been rarely examined with a risk-based approach, although required by the European legislation. In this study, a method for estimating flood risk caused by environmental hotspots is developed. Risk includes flood hazard, hotspots exposure, and the expected severity of the environmental impacts, obtained as the combination of vulnerability of the surrounding environment and pollution potential of the hotspots. The assessment is performed at catchment scale on a geographical basis, using open data, available from databases of public bodies and environmental agencies. Risk maps obtained by the application of the developed method are produced for the Arno river catchment in Tuscany (central Italy).\ud The area hosts approximately 1750 environmental pollution hotspots among which 5-10% have been classified at high risk
Chiara Arrighi; Matteo Masi; Renato Iannelli. Flood risk assessment of environmental pollution hotspots. Environmental Modelling & Software 2018, 100, 1 -10.
AMA StyleChiara Arrighi, Matteo Masi, Renato Iannelli. Flood risk assessment of environmental pollution hotspots. Environmental Modelling & Software. 2018; 100 ():1-10.
Chicago/Turabian StyleChiara Arrighi; Matteo Masi; Renato Iannelli. 2018. "Flood risk assessment of environmental pollution hotspots." Environmental Modelling & Software 100, no. : 1-10.
Renato Iannelli; Enrico Patrizi; David Giraldi. Corrigendum to “Feasibility evaluation for the industrial reuse of wastewater with moderate chloride concentration in central Italy” published in vol. 6 (2009) pp. 160–168 (doi: 10.5004/dwt.2009.662). Desalination and Water Treatment 2018, 132, 360 -360.
AMA StyleRenato Iannelli, Enrico Patrizi, David Giraldi. Corrigendum to “Feasibility evaluation for the industrial reuse of wastewater with moderate chloride concentration in central Italy” published in vol. 6 (2009) pp. 160–168 (doi: 10.5004/dwt.2009.662). Desalination and Water Treatment. 2018; 132 ():360-360.
Chicago/Turabian StyleRenato Iannelli; Enrico Patrizi; David Giraldi. 2018. "Corrigendum to “Feasibility evaluation for the industrial reuse of wastewater with moderate chloride concentration in central Italy” published in vol. 6 (2009) pp. 160–168 (doi: 10.5004/dwt.2009.662)." Desalination and Water Treatment 132, no. : 360-360.
We developed a methodology for the cost optimization of electrokinetic treatment porous media contaminated by toxic metals. A two-dimensional reactive-transport model was implemented to simulate the transport of chemical species by diffusion, electromigration and \ud electroosmosis, coupled with a geochemical model which calculates precipitation and dissolution of species, adsorption and desorption reactions, and aqueous speciation. The model was applied to the case study of an electrokinetic remediation prototype plant built in Livorno (Italy), treating 150 m3 of dredged sediments contaminated by toxic metals. The plant consisted of an ex-situ treatment basin equipped with electrodic wells arranged on a rectangular grid, connected to an electrolyte management system for catholyte and anolyte pH control. We validated the model by comparing the simulated electric field with the measured electric potential and the simulated pH profiles with the pH values of field samples. Good agreement was achieved between the modelled and measured data. On the basis of the validated model, we performed a parametric study to evaluate the influence of electrode distance and sediment buffering capacity on treatment costs and calculated the overall cost as a function of these two parameters. The results and costs were evaluated in terms of Pb removal, which was taken as the representative toxic metal. The results revealed the existence of distinct minima, representing the best set of parameters which optimized the overall treatment costs. We believe that the methodology and results obtained can be employed as a valuable tool to support the evaluation and design of electrokinetic remediation systems
Matteo Masi; Alessio Ceccarini; Renato Iannelli. Model-based optimization of field-scale electrokinetic treatment of dredged sediments. Chemical Engineering Journal 2017, 328, 87 -97.
AMA StyleMatteo Masi, Alessio Ceccarini, Renato Iannelli. Model-based optimization of field-scale electrokinetic treatment of dredged sediments. Chemical Engineering Journal. 2017; 328 ():87-97.
Chicago/Turabian StyleMatteo Masi; Alessio Ceccarini; Renato Iannelli. 2017. "Model-based optimization of field-scale electrokinetic treatment of dredged sediments." Chemical Engineering Journal 328, no. : 87-97.
Eleonora Peruzzi; Cristina Macci; Serena Doni; Renato Iannelli; Grazia Masciandaro. Stabilization process in reed bed systems for sludge treatment. Ecological Engineering 2017, 102, 381 -389.
AMA StyleEleonora Peruzzi, Cristina Macci, Serena Doni, Renato Iannelli, Grazia Masciandaro. Stabilization process in reed bed systems for sludge treatment. Ecological Engineering. 2017; 102 ():381-389.
Chicago/Turabian StyleEleonora Peruzzi; Cristina Macci; Serena Doni; Renato Iannelli; Grazia Masciandaro. 2017. "Stabilization process in reed bed systems for sludge treatment." Ecological Engineering 102, no. : 381-389.
We implemented a numerical model to simulate transport of multiple species and geochemical reactions occurring during electrokinetic remediation of metal-contaminated porous media. The main phenomena described by the model were: (1) species transport by diffusion, electromigration and electroosmosis, (2) pH-dependent buffering of H, (3) adsorption of metals onto particle surfaces, (4) aqueous speciation, (5) formation and dissolution of solid precipitates. The model was applied to simulate the electrokinetic extraction of heavy metals (Pb, Zn and Ni) from marine harbour sediments, characterized by a heterogeneous solid matrix, high buffering capacity and aged pollution. A good agreement was found between simulations of pH, electroosmotic flow and experimental results. The predicted residual metal concentrations in the sediment were also close to experimental profiles for all of the investigated metals. Some removal overestimation was observed in the regions close to the anode, possibly due to the significant metal content bound to residual fraction.
Matteo Masi; Alessio Ceccarini; Renato Iannelli. Multispecies reactive transport modelling of electrokinetic remediation of harbour sediments. Journal of Hazardous Materials 2017, 326, 187 -196.
AMA StyleMatteo Masi, Alessio Ceccarini, Renato Iannelli. Multispecies reactive transport modelling of electrokinetic remediation of harbour sediments. Journal of Hazardous Materials. 2017; 326 ():187-196.
Chicago/Turabian StyleMatteo Masi; Alessio Ceccarini; Renato Iannelli. 2017. "Multispecies reactive transport modelling of electrokinetic remediation of harbour sediments." Journal of Hazardous Materials 326, no. : 187-196.
International audienceThis work summarizes the advanced materials developed by various research groups for improving the stability of platinum (Pt), and Pt-based catalysts center toward the oxygen reduction reaction (ORR) in acid medium. The ORR stability enhancement of Pt catalytic center can be classified according to the different nature of the supporting materials, namely, carbon-, oxide-based-, and oxide-carbon composites. The enhancement and stability of a catalytic center can be related to either its electronic modification induced by a strong interaction with the support, another metal (alloy), or to geometric effects. In addition, other parameters come into play, the size, the morphology of the catalytic center, the temperature, the dispersion, and mass loading, along with the measuring methods. This mini-review mainly focusses on the stability improvement, depending on the substrate nature. This latter can be further modified via functionalization or by the chemical interaction nature between the substrate and catalyst
R. Iannelli; M. Masi; A. Ceccarini; M.B. Ostuni; R. Lageman; A. Muntoni; D. Spiga; A. Polettini; A. Marini; R. Pomi. Electrokinetic remediation of metal-polluted marine sediments: experimental investigation for plant design. Electrochimica Acta 2015, 181, 146 -159.
AMA StyleR. Iannelli, M. Masi, A. Ceccarini, M.B. Ostuni, R. Lageman, A. Muntoni, D. Spiga, A. Polettini, A. Marini, R. Pomi. Electrokinetic remediation of metal-polluted marine sediments: experimental investigation for plant design. Electrochimica Acta. 2015; 181 ():146-159.
Chicago/Turabian StyleR. Iannelli; M. Masi; A. Ceccarini; M.B. Ostuni; R. Lageman; A. Muntoni; D. Spiga; A. Polettini; A. Marini; R. Pomi. 2015. "Electrokinetic remediation of metal-polluted marine sediments: experimental investigation for plant design." Electrochimica Acta 181, no. : 146-159.
The suitability of electrokinetic remediation for removing heavy metals from dredged marine sediments with high acid buffering capacity was investigated. Laboratory-scale electrokinetic remediation experiments were carried out by applying two different voltage gradients to the sediment (0.5 and 0.8 V/cm) while circulating water or two different chelating agents at the electrode compartments. Tap water, 0.1 M citric acid and 0.1 M ethylenediaminetetraacetic acid (EDTA) solutions were used respectively. The investigated metals were Zn, Pb, V, Ni and Cu. In the unenhanced experiment, the acid front could not propagate due to the high acid buffering capacity of the sediments; the production of OH− ions at the cathode resulted in a high-pH environment causing the precipitation of CaCO3 and metal hydroxides. The use of citric acid prevented the formation of precipitates, but solubilisation and mobilisation of metal species were not sufficiently achieved. Metal removal was relevant when EDTA was used as the conditioning agent, and the electric potential was raised up to 0.8 V/cm. EDTA led to the formation of negatively charged complexes with metals which migrated towards the anode compartment by electromigration. This result shows that metal removal from sediments with high acid buffering capacity may be achieved by enhancing the electrokinetic process by EDTA addition when the acidification of the medium is not economically and/or environmentally sustainable.
Matteo Masi; Renato Iannelli; Gabriella Losito. Ligand-enhanced electrokinetic remediation of metal-contaminated marine sediments with high acid buffering capacity. Environmental Science and Pollution Research 2015, 23, 10566 -10576.
AMA StyleMatteo Masi, Renato Iannelli, Gabriella Losito. Ligand-enhanced electrokinetic remediation of metal-contaminated marine sediments with high acid buffering capacity. Environmental Science and Pollution Research. 2015; 23 (11):10566-10576.
Chicago/Turabian StyleMatteo Masi; Renato Iannelli; Gabriella Losito. 2015. "Ligand-enhanced electrokinetic remediation of metal-contaminated marine sediments with high acid buffering capacity." Environmental Science and Pollution Research 23, no. 11: 10566-10576.
Serena Doni; Cristina Macci; E. Peruzzi; Renato Iannelli; G. Masciandaro. Heavy metal distribution in a sediment phytoremediation system at pilot scale. Ecological Engineering 2015, 81, 146 -157.
AMA StyleSerena Doni, Cristina Macci, E. Peruzzi, Renato Iannelli, G. Masciandaro. Heavy metal distribution in a sediment phytoremediation system at pilot scale. Ecological Engineering. 2015; 81 ():146-157.
Chicago/Turabian StyleSerena Doni; Cristina Macci; E. Peruzzi; Renato Iannelli; G. Masciandaro. 2015. "Heavy metal distribution in a sediment phytoremediation system at pilot scale." Ecological Engineering 81, no. : 146-157.