Riccardo Basosi | University of Siena / Università di Siena (original) (raw)
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Thermodynamic Analysis and Optimization of Geothermal Power Plants
Urban systems have become one of the most crucial challenges for the EU energy strategy. In this,... more Urban systems have become one of the most crucial challenges for the EU energy strategy. In this, initiatives that focus on Smart Environment are pivotal for the development of the EU energy planning and implementing. In this contribute we discuss some of the major issues that need to be addressed when assessing the sustainability of Smart Cities. After presenting an overview of the best indicators and indexes developed for drafting parameters/recommendation characterizing the Smart Environment dimension of a urban system, we focus on the potentiality of LCA in this area proposing a combined approach between dynamic LCA and the results of LCA in historical series for the generation of reliable index of sustainability for Cities
The data reported here are collected from the samplings carried on by the Regional Agency for Env... more The data reported here are collected from the samplings carried on by the Regional Agency for Environmntal Protection of Tuscany (Italy). Data availability starts from the year 2000, when new data will mades available the dataset will be updated. The elaborated version consist in the application of some basic mathematics (average) to obtain 1 emisison value for each year. In this version also statistical descriptors are reported.
Molecules, Aug 1, 2018
An actinobacteria strain was isolated from Algerian Sahara soil and assigned to Streptomyces cyan... more An actinobacteria strain was isolated from Algerian Sahara soil and assigned to Streptomyces cyaneofuscatus Pridham et al. 1958 species. This strain was selected for its ability to produce melanin exopigments in liquid and solid media. Melanin synthesis was associated with tyrosinase activity and the enzyme from this strain was isolated and biochemically characterized. Synthetic melanin was then enzymatically produced using the S. cyaneofuscatus Pridham et al. 1958 tyrosinase. As this enzyme showed a higher diphenolase activity, a synthetic melanin from the enzymic oxidation of 3,4-dihydroxyphenylalanine (dopa) was obtained by the use of a Trametes versicolor (L.) Lloyd laccase for comparison. The natural and synthetic pigments were physico-chemically characterized by the use of ultraviolet (UV)-Visible, and Fourier transform infrared (FT-IR) and multifrequency electron paramagnetic resonance (EPR) spectroscopies. All the melanin samples displayed a stable free radical when analyzed by X-band EPR spectroscopy. Once the samples were recorded at Q-band EPR, a copolymer derived from a mixture of different constituents was evident in the natural melanin. All radical species were analyzed and discussed. The use of water-soluble melanin naturally produced by S. cyaneofuscatus Pridham et al. 1958 represents a new biotechnological alternative to commercial insoluble pigments.
Fe III-hypohalite complexes have been implicated in a wide range of important enzyme-catalyzed ha... more Fe III-hypohalite complexes have been implicated in a wide range of important enzyme-catalyzed halogenation reactions including the biosynthesis of natural products and antibiotics and post-translational modification of proteins. The absence of spectroscopic data on such species precludes their identification. Herein, we report the generation and spectroscopic characterization of nonheme Fe III-hypohalite intermediates of possible relevance to iron halogenases. We show that Fe III-OCl polypyridylamine complexes can be sufficiently stable at room temperature to be characterized by UV/Vis absorption, resonance Raman and EPR spectroscopies, and cryo-ESIMS. DFT methods rationalize the pathways to the formation of the Fe III-OCl, and ultimately Fe IV = O, species and provide indirect evidence for a short-lived Fe II-OCl intermediate. The species observed and the pathways involved offer insight into and, importantly, a spectroscopic database for the investigation of iron halogenases.
The research project SELFIE, funded by MIUR and Region Tuscany in 2016, aimed at the development ... more The research project SELFIE, funded by MIUR and Region Tuscany in 2016, aimed at the development of innovative building components to increase energy saving of buildings in the Mediterrenean area. Thanks to the combination of several elements, SELFIE modules bear adaptive properties and self-production of renewable energy. The ecoprofile of the innovative component SELFIE2 was evaluated with life cycle analysis and, through a contribution analysis, the most impacting components were identified. In an eco-design approach, improvement actions to reduce the environmental burdens were suggested and validated by applying a sensitivity analysi
International Journal of Heat and Technology, 2010
Energy, Nov 1, 2021
Renewable energy communities are multi-users energy systems that are expected to become popular i... more Renewable energy communities are multi-users energy systems that are expected to become popular in all countries, including Italy. This paper discusses environmental-driven solar compensation mechanisms, specifically designed for energy communities. Such mechanisms consider the adoption of Distributed Energy Resources by the communities and reflect their overall life cycle environmental benefit. Notably, an innovative three-steps iterative methodology is adopted to design new feed-in tariffs including: (i) the optimal economic sizing of solar technologies, (ii) the life cycle assessment and (iii) the evaluation of a solar compensation mechanism. In the last step, the emissions avoided by communities are converted into economic solar compensation mechanisms (via feed-in tariffs) using the current value of carbon taxes. After the general methodology description, the proposed approach is applied to a specific Italian case study. In case carbon taxes are set to the current value, namely 15.4 EUR{tonCO 2 eq, the yearly national emissions are mitigated by the adoption of the proposed solar compensation from 121.1 MtonCO 2 eq/yr to 108.2 MtonCO 2 eq{yr. Differently, if taxes are increased to 20 EUR{tonCO 2 eq, the emissions are reduced to 84.3 MtonCO 2 eq{yr; in case carbon taxes are extended over this value, the grid gets saturated by communities electricity and the additional environmental advantages are negligible.
Science of The Total Environment, Nov 1, 2020
This paper compares the economic and environmental optimal design of Solar Home Systems (SHSs) an... more This paper compares the economic and environmental optimal design of Solar Home Systems (SHSs) and explores the role of economic incentives (such as tariffs and technology costs) in approximating the two optima. To achieve that, we present a methodology for the environmental and economic evaluation of grid-connected SHSs: user-scale electric systems involving a photovoltaic (PV) power system and a battery energy storage system. The proposed methodology is based on a mixed integer linear programming (MILP) optimization, life cycle assessment and life cycle costing. This methodological framework is applied to a case study involving a typical SHS installation in Italy. The results of the environmental optimal design brought to the evaluation of a 3.25 kW PV assisted by 8.66 kWh of nickel cobalt manganese batteries, whereas the costs of the SHS are minimized by a small PV system (less than 1 kW). Results underline that the environmental optimal configurations rely on battery technologies, which entails a significant cost compared to the grid connection. In contrast, the economic optimal design solutions is less impactful than the grid mix both from an environmental and economic points of view. Thanks to a reduction of batteries and PV costs, the environmental impact of the economic optimal design is expected to decrease in the future.
Green energy and technology, Dec 15, 2018
This is a PDF file of an unedited manuscript that has been accepted for publication. As a service... more This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Comparative Life Cycle Assessment study on environmental impact of oil production from micro-algae and terrestrial oilseed crops.
Journal of Physical Chemistry B, Feb 27, 2020
The spectroscopical characterization of melanins is a prior requirement for the efficient tailori... more The spectroscopical characterization of melanins is a prior requirement for the efficient tailoring of their radical scavenging, UV-Vis radiation absorption, metal chelation and natural pigment properties. The Electron Paramagnetic Resonance (EPR), exploiting the common persistent paramagnetism of melanins, represents the elective standard for the structural and dynamical characterization of their constituting radical species. As much as melanins are mainly investigated using X-band (9.5 GHz) CW-EPR, an integration with an alternative application of Q-band (34 GHz) in CW and pulse EPR for the discrimination of melanin pigments of different composition is here presented. The longitudinal relaxation times measured highlight faster relaxation rates for cysteinyldopa melanin, compared to those of the most common dopa melanin pigment, suggesting pulse EPR spin-lattice relaxation time measurements as a complementary tool for characterization of pigments of interest for biomimetic materials engineering. INTRODUCTION
The Journal of Physical Chemistry, Feb 1, 1988
ABSTRACT
Chemical Physics Letters, 1988
ABSTRACT
Chemischer Informationsdienst, Mar 20, 1979
Thermodynamic Analysis and Optimization of Geothermal Power Plants
Urban systems have become one of the most crucial challenges for the EU energy strategy. In this,... more Urban systems have become one of the most crucial challenges for the EU energy strategy. In this, initiatives that focus on Smart Environment are pivotal for the development of the EU energy planning and implementing. In this contribute we discuss some of the major issues that need to be addressed when assessing the sustainability of Smart Cities. After presenting an overview of the best indicators and indexes developed for drafting parameters/recommendation characterizing the Smart Environment dimension of a urban system, we focus on the potentiality of LCA in this area proposing a combined approach between dynamic LCA and the results of LCA in historical series for the generation of reliable index of sustainability for Cities
The data reported here are collected from the samplings carried on by the Regional Agency for Env... more The data reported here are collected from the samplings carried on by the Regional Agency for Environmntal Protection of Tuscany (Italy). Data availability starts from the year 2000, when new data will mades available the dataset will be updated. The elaborated version consist in the application of some basic mathematics (average) to obtain 1 emisison value for each year. In this version also statistical descriptors are reported.
Molecules, Aug 1, 2018
An actinobacteria strain was isolated from Algerian Sahara soil and assigned to Streptomyces cyan... more An actinobacteria strain was isolated from Algerian Sahara soil and assigned to Streptomyces cyaneofuscatus Pridham et al. 1958 species. This strain was selected for its ability to produce melanin exopigments in liquid and solid media. Melanin synthesis was associated with tyrosinase activity and the enzyme from this strain was isolated and biochemically characterized. Synthetic melanin was then enzymatically produced using the S. cyaneofuscatus Pridham et al. 1958 tyrosinase. As this enzyme showed a higher diphenolase activity, a synthetic melanin from the enzymic oxidation of 3,4-dihydroxyphenylalanine (dopa) was obtained by the use of a Trametes versicolor (L.) Lloyd laccase for comparison. The natural and synthetic pigments were physico-chemically characterized by the use of ultraviolet (UV)-Visible, and Fourier transform infrared (FT-IR) and multifrequency electron paramagnetic resonance (EPR) spectroscopies. All the melanin samples displayed a stable free radical when analyzed by X-band EPR spectroscopy. Once the samples were recorded at Q-band EPR, a copolymer derived from a mixture of different constituents was evident in the natural melanin. All radical species were analyzed and discussed. The use of water-soluble melanin naturally produced by S. cyaneofuscatus Pridham et al. 1958 represents a new biotechnological alternative to commercial insoluble pigments.
Fe III-hypohalite complexes have been implicated in a wide range of important enzyme-catalyzed ha... more Fe III-hypohalite complexes have been implicated in a wide range of important enzyme-catalyzed halogenation reactions including the biosynthesis of natural products and antibiotics and post-translational modification of proteins. The absence of spectroscopic data on such species precludes their identification. Herein, we report the generation and spectroscopic characterization of nonheme Fe III-hypohalite intermediates of possible relevance to iron halogenases. We show that Fe III-OCl polypyridylamine complexes can be sufficiently stable at room temperature to be characterized by UV/Vis absorption, resonance Raman and EPR spectroscopies, and cryo-ESIMS. DFT methods rationalize the pathways to the formation of the Fe III-OCl, and ultimately Fe IV = O, species and provide indirect evidence for a short-lived Fe II-OCl intermediate. The species observed and the pathways involved offer insight into and, importantly, a spectroscopic database for the investigation of iron halogenases.
The research project SELFIE, funded by MIUR and Region Tuscany in 2016, aimed at the development ... more The research project SELFIE, funded by MIUR and Region Tuscany in 2016, aimed at the development of innovative building components to increase energy saving of buildings in the Mediterrenean area. Thanks to the combination of several elements, SELFIE modules bear adaptive properties and self-production of renewable energy. The ecoprofile of the innovative component SELFIE2 was evaluated with life cycle analysis and, through a contribution analysis, the most impacting components were identified. In an eco-design approach, improvement actions to reduce the environmental burdens were suggested and validated by applying a sensitivity analysi
International Journal of Heat and Technology, 2010
Energy, Nov 1, 2021
Renewable energy communities are multi-users energy systems that are expected to become popular i... more Renewable energy communities are multi-users energy systems that are expected to become popular in all countries, including Italy. This paper discusses environmental-driven solar compensation mechanisms, specifically designed for energy communities. Such mechanisms consider the adoption of Distributed Energy Resources by the communities and reflect their overall life cycle environmental benefit. Notably, an innovative three-steps iterative methodology is adopted to design new feed-in tariffs including: (i) the optimal economic sizing of solar technologies, (ii) the life cycle assessment and (iii) the evaluation of a solar compensation mechanism. In the last step, the emissions avoided by communities are converted into economic solar compensation mechanisms (via feed-in tariffs) using the current value of carbon taxes. After the general methodology description, the proposed approach is applied to a specific Italian case study. In case carbon taxes are set to the current value, namely 15.4 EUR{tonCO 2 eq, the yearly national emissions are mitigated by the adoption of the proposed solar compensation from 121.1 MtonCO 2 eq/yr to 108.2 MtonCO 2 eq{yr. Differently, if taxes are increased to 20 EUR{tonCO 2 eq, the emissions are reduced to 84.3 MtonCO 2 eq{yr; in case carbon taxes are extended over this value, the grid gets saturated by communities electricity and the additional environmental advantages are negligible.
Science of The Total Environment, Nov 1, 2020
This paper compares the economic and environmental optimal design of Solar Home Systems (SHSs) an... more This paper compares the economic and environmental optimal design of Solar Home Systems (SHSs) and explores the role of economic incentives (such as tariffs and technology costs) in approximating the two optima. To achieve that, we present a methodology for the environmental and economic evaluation of grid-connected SHSs: user-scale electric systems involving a photovoltaic (PV) power system and a battery energy storage system. The proposed methodology is based on a mixed integer linear programming (MILP) optimization, life cycle assessment and life cycle costing. This methodological framework is applied to a case study involving a typical SHS installation in Italy. The results of the environmental optimal design brought to the evaluation of a 3.25 kW PV assisted by 8.66 kWh of nickel cobalt manganese batteries, whereas the costs of the SHS are minimized by a small PV system (less than 1 kW). Results underline that the environmental optimal configurations rely on battery technologies, which entails a significant cost compared to the grid connection. In contrast, the economic optimal design solutions is less impactful than the grid mix both from an environmental and economic points of view. Thanks to a reduction of batteries and PV costs, the environmental impact of the economic optimal design is expected to decrease in the future.
Green energy and technology, Dec 15, 2018
This is a PDF file of an unedited manuscript that has been accepted for publication. As a service... more This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Comparative Life Cycle Assessment study on environmental impact of oil production from micro-algae and terrestrial oilseed crops.
Journal of Physical Chemistry B, Feb 27, 2020
The spectroscopical characterization of melanins is a prior requirement for the efficient tailori... more The spectroscopical characterization of melanins is a prior requirement for the efficient tailoring of their radical scavenging, UV-Vis radiation absorption, metal chelation and natural pigment properties. The Electron Paramagnetic Resonance (EPR), exploiting the common persistent paramagnetism of melanins, represents the elective standard for the structural and dynamical characterization of their constituting radical species. As much as melanins are mainly investigated using X-band (9.5 GHz) CW-EPR, an integration with an alternative application of Q-band (34 GHz) in CW and pulse EPR for the discrimination of melanin pigments of different composition is here presented. The longitudinal relaxation times measured highlight faster relaxation rates for cysteinyldopa melanin, compared to those of the most common dopa melanin pigment, suggesting pulse EPR spin-lattice relaxation time measurements as a complementary tool for characterization of pigments of interest for biomimetic materials engineering. INTRODUCTION
The Journal of Physical Chemistry, Feb 1, 1988
ABSTRACT
Chemical Physics Letters, 1988
ABSTRACT
Chemischer Informationsdienst, Mar 20, 1979