26 results on '"Barisano, D."'
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2. Production of Gaseous Carriers Via Biomass Gasification for Energy Purposes
- Author
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Barisano, D., Canneto, G., Nanna, F., Villone, A., Alvino, E., Carnevale, M., and Pinto, G.
- Published
- 2014
- Full Text
- View/download PDF
3. Biomass gasification and in-bed contaminants removal: Performance of iron enriched Olivine and bauxite in a process of steam/O2 gasification
- Author
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Barisano, D., Freda, C., Nanna, F., Fanelli, E., and Villone, A.
- Published
- 2012
- Full Text
- View/download PDF
4. Bioremediation of wastewater stream from syngas cleaning via wet scrubbing
- Author
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Bianco L., D'Amico E., Villone A., Nanna F., Barisano D., Bianco, L., D'Amico, E., Villone, A., Nanna, F., and Barisano, D.
- Abstract
Biomass gasification is a process known for its high potential in enabling the exploitation of residual biomass in the production of renewable electricity. At present one of the most favorable patterns from both an environmental and a sustainability point of view is air gasification coupled with an Internal Combustion Engine (ICE) for decentralized production. In order to have the best performances of the ICE to be run with the produced gas, the required technical specifications on gas purity can be achieved at an appropriate level by means of wet scrubbing. In wet gas cleaning approach, stages based on organic liquids (e.g. biodiesel) and water can be jointly adopted for the removal of contaminants. In the present work preliminary results for the regeneration of the wastewater stream produced at a gasification plant whose gas cleaning is carried out with a purification train based on biodiesel and water scrubbing are presented. To this aim three different fungal strains were selected and tested for their bioremediation potential, i.e. Bjerkandera adusta, Arthrinium sp, and Pleurotus ostreatus. Laboratory tests gave an overall positive response on the effectiveness of wastewater treatment by Bjerkandera adusta and Arthrinium sp. thus demonstrating that these microorganisms are able to metabolize, and therefore remove, both aromatic molecules typical of tar produced in gasification processes, and esters of fatty acids constituting the biodiesel used for gas washing in the first stage.
- Published
- 2020
5. Mid Term Results of the H2020-LC-SC3-RES-11 BLAZE Project: Biomass Low Cost Advanced Zero Emission Small-To-Medium Scale Integrated Gasifier Fuel Cell Combined Heat and Power Plant
- Author
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Bocci, E., Del Zotto, L., Di Carlo, A., Barisano, D., Pumiglia, D., Aydin, B., Poggiaroni, G., Ouweltjes, J.P., Mirabelli, I., Pérez-Fortes, M., and Van Herle, J.
- Subjects
Biomass - Abstract
BLAZE aims at developing Low cost, Advanced and Zero Emission first-of-a-kind small-to-medium Biomass CHP. This aim is reached by developing dual bubbling fluidised bed technology integrated with high temperature gas cleaning & conditioning systems and Solid Oxide Fuel Cells. The technology is characterised by the widest solid fuel spectrum applicable, high efficiencies (50% electrical versus the actual 20%), low investment (< 4 k€/kWe) and operational (˜ 0.05 €/kWh) costs, as well as almost zero noxious gaseous and PM emissions, projecting electricity production costs below 0.10 €/kWh. This paper shows the midterm project achievements, i.e. the biomass waste gasification and SOFC tests, the overall simulation and the progress on the realisation of 25 kWe SOFC pilot plant., Proceedings of the 29th European Biomass Conference and Exhibition, 26-29 April 2021, Online, pp. 472-479
- Published
- 2021
- Full Text
- View/download PDF
6. Hydrogen production from biomass via gasification process: The results of the eu UnifHY project
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Braccio, G., Barisano, D., Braccio, G., and Barisano, D.
- Subjects
Bioma ,Biomass ,Gasification ,Hydrogen - Abstract
This paper quotes an overview of the UNIfHY project results regarding pure hydrogen production from biomass gasification. Tests with different gasification agents (steam/air/oxygen) and at different temperatures showed syngas yield from 1.1 to 1.7 Nm3 dry/kg of dry biomass, hydrogen content from 20 to 40%-v dry, tars, particulate in the range of 10-20 g/Nm3 dry, sulphur and chlorine compounds in the range of 50-90 ppmv, ammonia up to 1600 ppmv. Candle filters showed particulate removal efficiency higher than 99%-wt. A portable purification system (PPS) consisting in a ZnO guard bed reactor, a water gas shift reactor (WGS), compressor and gas upgrading unit (PSA) was designed and realized. The system was proven to be operable stably and continuously in experimental runs lasting more than 12 h. Hydrogen production at concentration of 99.99%-v was achieved with an H2 yield from PSA of 66.4%. Based on the data collected, UNIfHY can reach an economic production cost of 3-10 €/kg H2 (in the range 4.00-0.04 t H2/day, respectively) with low environmental impact (0.5-2.4 kg CO2/kg H2) but targets have to be different for decentralised (40% efficiency, 10 years lifetime
- Published
- 2017
7. Use of experimental catalysts for production of bio-methane from biomass: Tests of methanation with real syngas and performance evaluations
- Author
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Agostini, R., Villone, A., Nanna, F., Lotierzo, A., Barisano, D., Agostini, R., Villone, A., Nanna, F., Lotierzo, A., and Barisano, D.
- Subjects
Bioma ,Catalytic conversion ,Gaseous biofuel ,Synthetic natural gas (SNG) ,Gasification ,Biomass - Abstract
The methanation of a real gas produced from almond shells via steam/oxygen gasification is investigated. The performance of an experimental Ni-containing catalysts (Ni23.7Mg56.3Al20) was evaluated by using the material prepared in grains of 1-2 mm. The real gas was enriched with hydrogen at two different H2/COx mole ratios. All tests were carried out at operating conditions of 400 ÷ 450 °C and 25 bara. Checks with a defined reactive gas mixture provided indication about the activity state of the catalysts before and after the methanation. During all the stages of the tests the outlet gas composition was monitored and after each complete run the catalyst analyzed. Under the operating conditions adopted, the experimental catalyst showed a higher methane yield (+10% and +44%) at both H2 enrichment levels and no carbon deposition was observed, as demonstrated by after-test catalyst samples evaluated via Raman spectroscopy coupled with optical microscopy and SEM-EDAX analysis. © 2017, ETA-Florence Renewable Energies. All rights reserved.
- Published
- 2017
8. Gasification of anaerobic digestate from mix of biomass residues, manures and MSW to combined heat and power production
- Author
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Cornacchia, G., Braccio, G., Agostini, R., Barisano, D., Freda, C., Villone, A., Nanna, F., Cornacchia, G., Braccio, G., Agostini, R., Barisano, D., Freda, C., Villone, A., and Nanna, F.
- Subjects
Steam ,Carbon dioxide ,Digestate ,Gasification - Abstract
Energy valorization via gasification of the solid residue (digestate) collected in a process of anaerobic digestion (AD) of blended fermentable feedstocks was considered. A rotary kiln reactor was adopted to collect data on the process performances when CO2, steam and mixes of them, were used as gasifying agents. Preliminary experimental campaigns were carried out at 800 °C by using a dried digestate having 64 %-wt volatile matter, 10 %- wt fixed carbon and 26 %-wt ash. Based on the total amount of supplied digestate, at the considered operating conditions, feedstock conversions in the range 59-63 %-wt, were achieved. By using the experimental data (i.e. amount of final residue, yield and heating values of the producer gas) in a simulation model of the gasification process, mass and energy balances were estimated. Among the different process conditions considered, the digestate gasification with preferable, although preliminary, operating conditions resulted that one carried out using only CO2 at a CO2/Feedstock ratio around 0.26 by weight. At this operating conditions, for the cold gas efficiency and the producer gas fraction to be used for covering the heat duty at the rotary kiln, values of 69 % and 28 % were respectively estimated. In all other considered conditions, the estimated values were found lower. Chance for process improvements are however predictable. © 2017, ETA-Florence Renewable Energies. All rights reserved.
- Published
- 2017
9. Use of Experimental Catalysts for Production of Bio-Methane from Biomass: Tests of Methanation with Real Syngas and Performance Evaluations
- Author
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Barisano, D., Lotierzo, A., Nanna, F., Villone, A., Agostini, R., Basile, F., and Lombardi, E.
- Subjects
Biomass - Abstract
The methanation of a real gas produced from almond shells via steam/oxygen gasification is investigated. The performance of an experimental Ni-containing catalysts (Ni23.7Mg56.3Al20) was evaluated by using the material prepared in grains of 1-2 mm. The real gas was enriched with hydrogen at two different H2/COx mole ratios. All tests were carried out at operating conditions of 400 ÷ 450 °C and 25 bara. Checks with a defined reactive gas mixture provided indication about the activity state of the catalysts before and after the methanation. During all the stages of the tests the outlet gas composition was monitored and after each complete run the catalyst analyzed. Under the operating conditions adopted, the experimental catalyst showed a higher methane yield (+10% and +44%) at both H2 enrichment levels and no carbon deposition was observed, as demonstrated by after-test catalyst samples evaluated via Raman spectroscopy coupled with optical microscopy and SEM-EDAX analysis., Proceedings of the 25th European Biomass Conference and Exhibition, 12-15 June 2017, Stockholm, Sweden, pp. 1245-1247
- Published
- 2017
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10. Steam/Oxygen Biomass Gasification in a 1000 Kwth ICBFB Pilot Plant
- Author
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Barisano, D., Canneto, G., Nanna, F., Alvino, E., Pinto, G., Villone, A., Battafarano, A., Corrado, M., and Braccio, G.
- Subjects
Biomass - Abstract
Steam/O2 biomass gasification campaigns were carried out at a 1000 kWth pilot plant based on an internally recirculating bubbling fluidized bed (ICBFB) reactor. Tests were carried out at different biomass feeding rates and comparable operating conditions, that is: 0.20-0.22 ER, 0.38-0.41 Steam/Biomass and 830-880 °C gasification temperature. Almond shells were supplied to the reactors at 140 and 180 kgwet/h. The two gasification campaigns showed comparable overall performances. Gas yields and carbon conversions of about 1.0 Nm3dry/kg(dry, Biom) and 85 %(wt, daf) were respectively estimated. Larger differences were found in the gas composition and contaminant loads. In the first case, it was observed an average dry gas composition of: 30-33 %v H2, 28-32 %v CO, 22-27 %v CO2, 9-11 %v CH4, up to 2 %v C2+, in the second a higher CH4 and lower H2 contents were instead achieved. The highest particles and tars loads were in the ranges 12-16 g/Nm3dry and 12-18 g/Nm3dry, respectively. Finally, H2S, HCl and NH3 were all found in the range: 60-110 ppmv. In the whole, the gasification test campaigns allowed to gain relevant evidence about the operability and the performance of the gasifier., Proceedings of the 23rd European Biomass Conference and Exhibition, 1-4 June 2015, Vienna, Austria, pp. 550-554
- Published
- 2015
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11. Energy Valorization of Hydrolytic Lignin Residue via Steam/Oxygen Gasification
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Barisano, D., Nanna, F., Freda, C., Villone, A., Nistri, R., Chiaramonti, D., and Rizzo, A.M.
- Subjects
Biomass - Abstract
To make biorefinery processes valuable from both economical and energy perspectives, all components of the starting feedstock need to be properly valorized. In the present work the results obtained in steam/oxygen gasification tests on a lignin rich residue from second generation bioethanol production process are presented. The residue was collected at the end of a process of simultaneous hydrolysis and fermentation, adopted to convert sugars from steam-exploded biomass. The gasification tests were carried out with a bubbling fluidized bed reactor at: 850 °C, 1 atm, 0.3 equivalence ratio (ER) and 0.6 steam/biomass (S/B). Under these conditions, it was found an average dry gas composition of: 25%v CO, 37 %v H2, 30 %v CO2, 7 %v CH4, 2% C2+ and a gas yield of 1.3 Nm3/kgdaf. Clogging of the feeding screw and appearance of bed defluidization were occasionally observed. Nevertheless, the gasification tests were run for several hours without interruption. Based on the data of performance of the gasification facility it was possible to evaluate the potential of power production. The electrical output was found consistent with the internal needs of a commercial plant for bioethanol production, sized to process up to 200 ktonnes/y of biomass., Proceedings of the 21st European Biomass Conference and Exhibition, 3-7 June 2013, Copenhagen, Denmark, pp. 430-434
- Published
- 2013
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12. Biomass gasification and syngas production for use in solid oxide fuel cell: gas cleaning and conditioning, and performance tests
- Author
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Jewulski, J., Stepien, M., Blesznowski, M., Gallucci, K., and Barisano, D.
- Subjects
Biomass - Abstract
Performance tests have been completed with a SOFC unit fuelled with syngas produced from biomass gasification reactors, properly conditioned and cleaned. Three series of tests at bench and industrial scale have been completed. The results of the tests indicate that cleaned syngas, from both steam blown and oxygen/steam blown gasification reactors, is a feasible fuel for anode supported SOFC cell. Cell performance on cleaned syngas is comparable or better than SOFC cell performance fuelled with the reference, hydrogen/nitrogen gas mixture. Several potential issues for the integrated SOFC/gasifier operation have been identified. Proper humidification of the gas stream, necessary to avoid carbon deposition, is critical for the long term cell performance. The presence of larger amounts of methane and higher hydrocarbons may lead to SOFC cell cracking due to large temperature gradients resulting from internal reforming process., Proceedings of the 20th European Biomass Conference and Exhibition, 18-22 June 2012, Milan, Italy, pp. 827-831
- Published
- 2012
13. Techno-Economic Analysis of a Novel Solution for Biomass and Waste Valorisation in Paper Mills
- Author
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Fiorenza, G., Di Gennaro, F., Barisano, D., Reale, F., and Braccio, G.
- Subjects
Biomass - Abstract
Paper industry is an “energy intensive” sector, therefore an increasing fraction of energy requirements is currently fulfilled by self-production, the most common solution being represented by gas-fired CHP plants. Moreover, the growing use of recovered paper and board as the raw material requires rational solutions for the management of the refuse originated by the mechanical separation of gross impurities from the usable fibre. A preliminary assessment of a novel solution for biomass and waste valorisation in paper mills, based upon the thermal gasification process and the subsequent co-firing of producer and natural gas in a gas turbine was performed. Preliminary waste characterisation shows that it has a remarkable LHV of 27.5 MJ/kg, thus confirming its potential use as a fuel for a thermo-chemical process. According to pilot tests results, a fuel gas with an excellent LHV of nearly 30 MJ/Nm³ can be produced via steam gasification. Furthermore thanks to producer gas high light hydrocarbons fraction, gas turbine performance should not significantly deteriorate due to the co-firing approach. The proposed solution, for the investigated case study, allows to save around 20% of natural gas consumption with an estimated payback period for the investment of only about 8 years., Proceedings of the 19th European Biomass Conference and Exhibition, 6-10 June 2011, Berlin, Germany, pp. 1519-1524
- Published
- 2011
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14. Effect of Iron Enrichment in Olivine Bed Material on the Fuel Gas Quality Produced via Steam/O2 Gasification Process
- Author
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Freda, C., Nanna, F., Fanelli, E., Villone, A., and Barisano, D.
- Subjects
Biomass - Abstract
Tests of steam/O2 gasification were carried out at a 10 kWth internally circulating bubbling fluidized bed (ICBFB) reactor in the presence of a new catalytic bed material (10% Fe/Olivine). For comparison, reference tests using unmodified olivine were also carried out. The ICBFB reactor was operated at the gasification conditions of: 855 °C, 0.33 ER, 0.64 S/Bdaf, atmospheric pressure. During the gasification tests, the raw gas was monitored with respect to water content, gas composition and contaminants (i.e. tar and dust). Char residue was also determined. By comparing the results, the gasification yield and the gas composition were found very similar. On average the gasification yield was found to be about 1.2 Nm3/kgdaf, and the fuel gas have a dry composition of about: 30 %v H2, 25 %v CO, 35 %v CO2, 7 %v CH4 and 3 %v light hydrocarbons. On the contrary, the 10%Fe/Olivine resulted significantly more effective towards the tar removal than unmodified olivine. From the chromatographic analysis, it was evaluated a tar reduction efficiency of 38 % by weight. As far as concern the particulate content, a roughly double content in particulate was measured. The residues collected showed an appreciable content in fine particles originated from the 10% Fe/Olivine bed material. Therefore, compared to the unmodified olivine, increased brittleness of the new bed material was detected., Proceedings of the 19th European Biomass Conference and Exhibition, 6-10 June 2011, Berlin, Germany, pp. 1426-1431
- Published
- 2011
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15. Syngas Production by Steam-Oxygen Gasification of Biomass and its Cleaning by Bio-Diesel and Water Scrubbing
- Author
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Freda, C., Fanelli, E., Nanna, F., Canneto, G., Braccio, G., Villone, A., Barisano, D., Alvino, E., Villani, M., Carnevale, O., Petrocelli, G., Battafarano, A., Corrado, M., Pinto, G., and Mannarino, V.
- Subjects
Biomass - Abstract
Gasification tests were carried out in an internal circulating bubbling fluidized bed reactor injected by water steam and oxygen, working at thermal input of about 4 kW. The input streams to the gasifier (biomass, water steam and oxygen) and output ones (char, water and syngas) were quantified to characterize the chemical efficiency of the process. The produced syngas having a GCMS tar content of 10.1 g/Nm3dry, which molecular composition was carefully ascertained, was cleaned in a scrubber. Two different scrubbing liquids were tested: environmentally friendly biodiesel and water. Their tar removal efficiency was determined measuring the tar content of the syngas downstream of the scrubber. It was ascertained that the biodiesel scrubbing removes 99% of the tar in syngas, while the water scrubbing removes 89 %., Proceedings of the 18th European Biomass Conference and Exhibition, 3-7 May 2010, Lyon, France, pp. 577-585
- Published
- 2010
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16. Steam/oxygen biomass gasification at pilot scale in an internally circulating bubbling fluidized bed reactor.
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Barisano, D., Canneto, G., Nanna, F., Alvino, E., Pinto, G., Villone, A., Carnevale, M., Valerio, V., Battafarano, A., and Braccio, G.
- Subjects
- *
OXYGEN , *BIOMASS gasification , *FEEDSTOCK , *FLUIDIZED bed reactors , *ATMOSPHERIC pressure , *PILOT plants - Abstract
An innovative 1000 kW th pilot plant based on a bubbling fluidized bed gasifier with internal recirculation was operated in experimental campaigns of biomass gasification. The evaluations were focused on the gasifier performances and quality of the product gas. To this aim, tests were carried out at atmospheric pressure using almond shells as a feedstock and three defined gasification mediums (i.e. steam/O 2 mixture, 35wt.% and 50wt.% O 2 enriched air); process temperature was in the range 820–880 °C. The result assessment allowed to evaluate the system flexibility to the gasifying agent and acquire data on the gas producible with this specific configuration. Based on the dry compositions, LHVs in the range 5.9–6.7 MJ/Nm 3 dry , 6.3–8.4 MJ/Nm 3 dry and 10.9–11.7 MJ/Nm 3 dry were respectively calculated for the three product gases. Correspondingly, an increase in the cold gas efficiency from 0.5 up to 0.7 was also estimated. Concerning the contaminant loads, in the case of the tests related to steam/O 2 biomass gasification, particle and tar contents were found in the range 6–10 g/Nm 3 dry and 12–18 g/Nm 3 dry , respectively, while H 2 S, HCl and NH 3 were at concentrations below 100 ppms (v). [ABSTRACT FROM AUTHOR]
- Published
- 2016
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17. CO2 Sorption-Enhanced Processes by Hydrotalcite-Like Compounds at Different Temperature Levels.
- Author
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Gallucci, K., Micheli, F., Barisano, D., Villone, A., Foscolo, P.U., and Rossi, L.
- Subjects
CARBON dioxide ,SORPTION ,TEMPERATURE effect ,X-ray diffraction ,ENERGY dispersive X-ray spectroscopy - Abstract
The aim of this work is to identify solid sorbents for CO
2 capture for coal and biomass syngas conditioning and cleaning by means of a sorption-enhanced reaction process. Hydrotalcite-like compounds (HTlcs) were synthesized with and without K2 CO3 impregnation. Samples were characterized by scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) and Barrett-Joyner-Halenda (BJH) porosimetry after synthesis and after capture tests, respectively. Sorption and desorption tests were performed in a fluidized bed reactor, under cyclic conditions, at two different temperature levels: 350/450°C and 600/700°C. At low temperature only the Mg-Al HTlcs K promoted samples showed stability and sorption capacity comparable with literature values. On the other hand, results at high temperature indicate that the mixed Mg-Ca-Al HTlcs samples exhibit the best behavior with the highest sorption capacity (1.7 mmolCO2 /g) almost stable over 5 sorption/regeneration cycles; furthermore, addition of steam allowed increasing their reactivity by 70% compared to the dry value. This type of sorbent could be a promising candidate to prepare a bifunctional sorbent-catalyst for sorption-enhanced processes, taking place directly in the fluidized bed gasifier, or downstream the reactor for adjustment of gas composition before further conversion in gaseous energy carriers. [ABSTRACT FROM AUTHOR]- Published
- 2015
- Full Text
- View/download PDF
18. Biomass gasification and in-bed contaminants removal: Performance of iron enriched Olivine and bauxite in a process of steam/O2 gasification
- Author
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Barisano, D., Freda, C., Nanna, F., Fanelli, E., and Villone, A.
- Subjects
- *
BIOMASS gasification , *POLLUTANTS , *PERFORMANCE evaluation , *OLIVINE , *BAUXITE , *BIOREACTORS , *CHEMICAL reduction , *BRITTLENESS - Abstract
Abstract: A modified Olivine, enriched in iron content (10% Fe/Olivine), and a natural bauxite, were tested in the in-bed reduction of tar and alkali halides (NaCl and KCl) released in a process of biomass steam/O2 gasification. The tests were carried out at an ICBFB bench scale reactor under the operating conditions of: 855–890°C, atmospheric pressure, 0.5 steam/biomass and 0.33 ER ratios. From the use of the two materials, a reduction in the contaminant contents of the fuel gas produced was found. For the alkali halides, a decrease up to 70%wt was observed for the potassium concentration, while for sodium, the reduction was found to be quite poor. For the organic content, compared to unmodified Olivine, the chromatographically determined total tar quantity showed a removal efficiency of 38%wt. Moreover, regarding the particulate content a rough doubling in the fuel gas revealed a certain brittleness of the new bed material. [Copyright &y& Elsevier]
- Published
- 2012
- Full Text
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19. Air Gasification of Biomass in a Downdraft Fixed Bed: A Comparative Study of the Inorganic and Organic Products Distribution.
- Author
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De Bari, I., Barisano, D., Cardinale, M., Matera, D., Nanna, F., and Viggiano, D.
- Published
- 2000
- Full Text
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20. Purification of Wastewater from Biomass-Derived Syngas Scrubber Using Biochar and Activated Carbons
- Author
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Giacinto Cornacchia, Daniela Cozza, Enrico Catizzone, D. Barisano, Luigi Marsico, Massimo Migliori, Corradino Sposato, Assunta Romanelli, Catizzone, E., Sposato, C., Romanelli, A., Barisano, D., Cornacchia, G., Marsico, L., Cozza, D., and Migliori, M.
- Subjects
020209 energy ,Health, Toxicology and Mutagenesis ,Biomass ,Environmental pollution ,02 engineering and technology ,010501 environmental sciences ,Wastewater ,01 natural sciences ,Article ,Adsorption ,Biochar ,0202 electrical engineering, electronic engineering, information engineering ,medicine ,biochar ,0105 earth and related environmental sciences ,biomass ,Chemistry ,Public Health, Environmental and Occupational Health ,Pulp and paper industry ,pollutant abatement technologies ,adsorption ,Charcoal ,syngas scrubber wastewater ,Medicine ,environmental pollution ,Pyrolysis ,Syngas ,Activated carbon ,medicine.drug - Abstract
Phenol is a major component in the scrubber wastewater used for syngas purification in biomass-based gasification plants. Adsorption is a common strategy for wastewater purification, and carbon materials, such as activated carbons and biochar, may be used for its remediation. In this work, we compare the adsorption behavior towards phenol of two biochar samples, produced by pyrolysis and gasification of lignocellulose biomass, with two commercial activated carbons. Obtained data were also used to assess the effect of textural properties (i.e., surface area) on phenol removal. Continuous tests in lab-scale columns were also carried out and the obtained data were processed with literature models in order to obtain design parameters for scale-up. Results clearly indicate the superiority of activated carbons due to the higher pore volume, although biomass-derived char may be more suitable from an economic and environmental point of view. The phenol adsorption capacity increases from about 65 m/g for gasification biochar to about 270 mg/g for the commercial activated carbon. Correspondingly, service time of commercial activated carbons was found to be about six times higher than that of gasification biochar. Finally, results indicate that phenol may be used as a model for characterizing the adsorption capacity of the investigated carbon materials, but in the case of real waste water the carbon usage rate should be considered at least 1.5 times higher than that calculated for phenol.
- Published
- 2021
21. Acid impregnation and steam explosion of corn stover in batch processes
- Author
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Zimbardi, F., Viola, E., Nanna, F., Larocca, E., Cardinale, M., and Barisano, D.
- Subjects
- *
CORN stover , *BATCH processing , *SULFURIC acid , *CROPS - Abstract
Abstract: The synergistic effect of pre-impregnation by sulphuric acid and steam explosion has been investigated. Sugar recovery by water extraction and cellulose digestibility by enzymes have been considered. The acid diffusion inside a representative particle, having thickness of 0.7mm, has been modelled on the basis of available models and diffusion coefficients. The experiments of acid impregnation have pointed out a plateau of the acid uptake after 10min corresponding to an acid adsorption of 22g/kg of dry stover. An experiment of acid desorption from the pre-impregnated biomass particles to a new bulk of pure water (reverse diffusion), has confirmed that only a small fraction of the uptaken acid remained free, while most has been consumed by the substrate. Nine conditions have been tested for the steam explosion treatment selecting the temperature of 180, 190, 200°C and sulphuric acid loadings of 0, 1.5, 3wt.%. The maximum sugar recovery by water extraction is produced by a SE treatment of 190°C for 5min and an acid loading of 1.5wt.%; at these conditions 25% of the sugars in the feedstock can be recovered as monomers or oligomers. The acid has greatly improved the sugar solubility, e.g. at 180°C the sugar recovery has been only 1.5% without acid, while by using 3wt.% of acid the sugar recovery has increased to 16.8%. Also the cellulose digestibility has been improved by the acid pre-impregnation, after 48h of digestion the yield of glucose reached 93% of the theoretical by using the substrate that was pre-impregnated with 3wt.% of acid an treated at 190°C. The high acid loading has also been required to achieve the best recovery of glucose (85% of the initial glucan) as sum of water extraction and 48h hydrolysis. [Copyright &y& Elsevier]
- Published
- 2007
- Full Text
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22. CO2 sorption-enhanced processes by hydrotalcite-like compounds at different temperature levels
- Author
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Francesca Micheli, Katia Gallucci, Pier Ugo Foscolo, Leucio Rossi, A. Villone, D. Barisano, Villone, A., and Barisano, D.
- Subjects
hydrotalcite-like compound ,CO2 sorption-enhanced processes ,Materials science ,Hydrotalcite ,General Chemical Engineering ,hydrotalcite-like compounds ,bifunctional sorbent-catalyst ,process intensification ,Organic chemistry ,Industrial chemistry ,Sorption ,Catalysis - Abstract
The aim of this work is to identify solid sorbents for CO2 capture for coal and biomass syngas conditioning and cleaning by means of a sorption-enhanced reaction process. Hydrotalcite-like compounds (HTlcs) were synthesized with and without K2CO3 impregnation. Samples were characterized by scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) and Barrett–Joyner–Halenda (BJH) porosimetry after synthesis and after capture tests, respectively. Sorption and desorption tests were performed in a fluidized bed reactor, under cyclic conditions, at two different temperature levels: 350/450°C and 600/700°C. At low temperature only the Mg–Al HTlcs K promoted samples showed stability and sorption capacity comparable with literature values. On the other hand, results at high temperature indicate that the mixed Mg-Ca-Al HTlcs samples exhibit the best behavior with the highest sorption capacity (1.7 mmolCO2/g) almost stable over 5 sorption/regeneration cycles; furthermore, addition of steam allowed increasing their reactivity by 70% compared to the dry value. This type of sorbent could be a promising candidate to prepare a bifunctional sorbent–catalyst for sorption-enhanced processes, taking place directly in the fluidized bed gasifier, or downstream the reactor for adjustment of gas composition before further conversion in gaseous energy carriers.
- Published
- 2015
23. Production of gaseous carriers via biomass gasification for energy purposes
- Author
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D. Barisano, F. Nanna, Elio Alvino, G. Canneto, M. Carnevale, A. Villone, Giuseppe Pinto, Pinto, G., Carnevale, M., Alvino, E., Villone, A., Nanna, F., Canneto, G., and Barisano, D.
- Subjects
Bubbling fluidized bed ,Biomass ,Gasification ,Process modeling ,Biofuels ,Waste management ,Energy conversion efficiency ,Plant based ,Bioma ,Energy(all) ,Scientific method ,Bench scale ,Environmental science ,Biomass gasification - Abstract
It is under development a biomass gasification plant based on a 1 MW th bubbling fluidized bed (BFB) reactor with internal recirculation. Compared to conventional BFB design, the mechanism of internal circulation of solids can give beneficial effect to the process in terms of biomass conversion efficiency into gaseous product and gas quality. A model describing the process of biomass gasification in the two reaction chambers was developed. Expected results were preliminarily validated by experimental results obtained at a bench scale facility working on the same gasification concept. © 2013 The Authors.
- Published
- 2014
24. Development of a Discharge Counseling and Medication Reconciliation Process for Pediatric Patients Within a Large, Academic Health System.
- Author
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Hernandez T, Barisano D, Welsh C, Rosano J, and Papiro T
- Abstract
Objective: This study aims to characterize the impact of a pharmacist-driven discharge medication reconciliation and counseling program targeting high-risk pediatric patients to mitigate barriers in transitions of care., Methods: This was a single-center quality improvement initiative including high-risk pediatric patients within a large academic medical center. Pharmacy, medical, and information technology team members developed a scoring system to identify patients at high risk of hospital readmission that resulted in a trigger tool built within the electronic medical record (EMR). Pharmacy workflow, the EMR documentation, and staff training were implemented. The primary end point was the number of high-risk patients with complete medication reconciliation and/or discharge counseling performed during the first 2 months after implementation. The secondary end points included quantification and qualification of the interventions conducted by a pharmacist., Results: Pediatric clinical pharmacists conducted discharge medication reconciliation and/or counseling for 60 patients during the first 2 months after implementation. There were 65 interventions performed, including 60 discharge medication reconciliations and 5 discharge counseling sessions. Of these interventions, 22 were recommendations on appropriate medication dosing and frequency (37%), 12 on duration of therapy (20%), and 8 were medication additions (13%). There were 6 interventions on adherence assistance (10%), 6 involved selection of medication formulation (10%), 3 involved medication discontinuation (5%), 2 involved appropriate therapy selection (3%), and 1 involved medication stability (1%). All interventions were accepted and implemented by the prescribing providers., Conclusions: Pharmacist-driven discharge medication reconciliation and counseling programs targeting pediatric high-risk population might be an effective tool to mitigate gaps in transitions of care., (Copyright. Pediatric Pharmacy Association. All rights reserved. For permissions, email: membership@pediatricpharmacy.org.)
- Published
- 2024
- Full Text
- View/download PDF
25. Purification of Wastewater from Biomass-Derived Syngas Scrubber Using Biochar and Activated Carbons.
- Author
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Catizzone E, Sposato C, Romanelli A, Barisano D, Cornacchia G, Marsico L, Cozza D, and Migliori M
- Subjects
- Adsorption, Biomass, Charcoal, Wastewater
- Abstract
Phenol is a major component in the scrubber wastewater used for syngas purification in biomass-based gasification plants. Adsorption is a common strategy for wastewater purification, and carbon materials, such as activated carbons and biochar, may be used for its remediation. In this work, we compare the adsorption behavior towards phenol of two biochar samples, produced by pyrolysis and gasification of lignocellulose biomass, with two commercial activated carbons. Obtained data were also used to assess the effect of textural properties (i.e., surface area) on phenol removal. Continuous tests in lab-scale columns were also carried out and the obtained data were processed with literature models in order to obtain design parameters for scale-up. Results clearly indicate the superiority of activated carbons due to the higher pore volume, although biomass-derived char may be more suitable from an economic and environmental point of view. The phenol adsorption capacity increases from about 65 m/g for gasification biochar to about 270 mg/g for the commercial activated carbon. Correspondingly, service time of commercial activated carbons was found to be about six times higher than that of gasification biochar. Finally, results indicate that phenol may be used as a model for characterizing the adsorption capacity of the investigated carbon materials, but in the case of real waste water the carbon usage rate should be considered at least 1.5 times higher than that calculated for phenol.
- Published
- 2021
- Full Text
- View/download PDF
26. Roles for Phospholipase D1 in the Tumor Microenvironment.
- Author
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Barisano D and Frohman MA
- Subjects
- Animals, Humans, Neoplasms blood supply, Neovascularization, Pathologic, Signal Transduction, Neoplasms metabolism, Phospholipase D metabolism, Tumor Microenvironment
- Abstract
The lipid-modifying signal transduction enzyme phospholipase D (PLD) has been proposed to have roles in oncogenic processes for well-on 30 years, with most of the early literature focused on potential functions for PLD in the biology of the tumor cells themselves. While such roles remain under investigation, evidence has also now been generated to support additional roles for PLD, in particular PLD1, in the tumor microenvironment, including effects on neoangiogenesis, the supply of nutrients, interactions of platelets with circulating cancer cells, the response of the immune system, and exosome biology. Here, we review these lines of investigation, accompanied by a discussion of the limitations of the existing studies and some cautionary notes regarding the study and interpretation of PLD function using model systems.
- Published
- 2020
- Full Text
- View/download PDF
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