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Rojo EM, Rossi S, Bolado S, Stampino PG, Ficara E, Dotelli G. Life cycle assessment of biostimulant production from algal biomass grown on piggery wastewater. Sci Total Environ 2024; 907:168083. [PMID: 37879487 DOI: 10.1016/j.scitotenv.2023.168083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/20/2023] [Accepted: 10/21/2023] [Indexed: 10/27/2023]
Abstract
Piggery wastewater has become a large source of pollution with high concentrations of nutrients, that must be managed and properly treated to increase its environmental viability. Currently, the use of microalgae for treating this type of wastewater has emerged as a sustainable process with several benefits, including nutrient recovery to produce valuable products such as biostimulants, and CO2 capture from flue gases. However, the biostimulant production from biomass grown on piggery wastewater also has environmental impacts that need to be studied to identify possible hotspots. This work presents the life cycle assessment by IMPACT 2002+ method of the production of microalgae-based biostimulants, comparing two different harvesting technologies (membrane in scenario 1 and centrifuge in scenario 2) and two different technologies for on-site CO2 capture from flue gases (chemical absorption and membrane separation). The use of membranes for harvesting (scenario 1) reduced the environmental impact in all categories (human health, ecosystem quality, climate change, and resources) by 30 % on average, compared to centrifuge (scenario 2). Also, membranes for CO2 capture allowed to decrease environmental impacts by 16 %, with the largest reduction in the resource category (∼33 %). Thus, the process with the best environmental viability was achieved in scenario 1 using membranes for CO2 capture, with a value of 217 kg CO2 eq/FU. In scenario 2 with centrifugation, the high contribution of the cultivation sub-unit in all impacts was highlighted (>75 %), while in scenario 1 the production sub-unit also had moderate contribution in the human health (∼35 %) and climate change (∼30 %) categories due to the lower concentration and high flow rates. These results were obtained under a worst-case situation with pilot scale optimized parameters, with limited data which would have to be further optimized at industrial-scale implementation. The sensitivity analysis showed a little influence of the parameters that contribute the most to the impacts, except for the transportation of the piggery wastewater to the processing plant in scenario 2. Because of the relevant impact of biostimulant transportation in scenario 1, centrifugation becomes more favourable when transportation distance is longer than 321 km.
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Affiliation(s)
- Elena M Rojo
- Institute of Sustainable Processes, University of Valladolid, Dr. Mergelina s/n, 47011 Valladolid, Spain; Department of Chemical Engineering and Environmental Technology, School of Industrial Engineering, University of Valladolid, Dr. Mergelina s/n, 47011 Valladolid, Spain.
| | - Simone Rossi
- Department of Civil and Environmental Engineering, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Silvia Bolado
- Institute of Sustainable Processes, University of Valladolid, Dr. Mergelina s/n, 47011 Valladolid, Spain; Department of Chemical Engineering and Environmental Technology, School of Industrial Engineering, University of Valladolid, Dr. Mergelina s/n, 47011 Valladolid, Spain
| | - Paola Gallo Stampino
- Department of Chemistry, Materials and Chemical Engineering, "Giulio Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Elena Ficara
- Department of Civil and Environmental Engineering, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Giovanni Dotelli
- Department of Chemistry, Materials and Chemical Engineering, "Giulio Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
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2
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Guagliano M, Cristiani C, Dell’Anno M, Dotelli G, Finocchio E, Lacalamita M, Mesto E, Reggi S, Rossi L, Schingaro E. A Commercial Clay-Based Material as a Carrier for Targeted Lysozyme Delivery in Animal Feed. Nanomaterials (Basel) 2023; 13:2965. [PMID: 37999319 PMCID: PMC10674955 DOI: 10.3390/nano13222965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 11/02/2023] [Accepted: 11/06/2023] [Indexed: 11/25/2023]
Abstract
The controlled supply of bioactive molecules is a subject of debate in animal nutrition. The release of bioactive molecules in the target organ, in this case the intestine, results in improved feed, as well as having a lower environmental impact. However, the degradation of bioactive molecules' in transit in the gastrointestinal passage is still an unresolved issue. This paper discusses the feasibility of a simple and cost-effective procedure to bypass the degradation problem. A solid/liquid adsorption procedure was applied, and the operating parameters (pH, reaction time, and LY initial concentration) were studied. Lysozyme is used in this work as a representative bioactive molecule, while Adsorbo®, a commercial mixture of clay minerals and zeolites which meets current feed regulations, is used as the carrier. A maximum LY loading of 32 mgLY/gAD (LY(32)-AD) was obtained, with fixing pH in the range 7.5-8, initial LY content at 37.5 mgLY/gAD, and reaction time at 30 min. A full characterisation of the hybrid organoclay highlighted that LY molecules were homogeneously spread on the carrier's surface, where the LY-carrier interaction was mainly due to charge interaction. Preliminary release tests performed on the LY(32)-AD synthesised sample showed a higher releasing capacity, raising the pH from 3 to 7. In addition, a preliminary Trolox equivalent antioxidant capacity (TEAC) assay showed an antioxidant capacity for the LY of 1.47 ± 0.18 µmol TroloxEq/g with an inhibition percentage of 33.20 ± 3.94%.
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Affiliation(s)
- Marianna Guagliano
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milano, Italy;
| | - Cinzia Cristiani
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milano, Italy;
| | - Matteo Dell’Anno
- Dipartimento di Medicina Veterinaria e Scienze Animali—DIVAS, Università degli Studi di Milano, Via dell’Università 6, 26900 Lodi, Italy; (M.D.); (S.R.); (L.R.)
| | - Giovanni Dotelli
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milano, Italy;
| | - Elisabetta Finocchio
- Dipartimento di Ingegneria Civile, Chimica e Ambientale, Università di Genova, Via Opera Pia 15, 16145 Genova, Italy;
| | - Maria Lacalamita
- Dipartimento di Scienze della Terra e Geoambientali, Università degli Studi di Bari Aldo Moro, Via Edoardo Orabona 4, 70125 Bari, Italy; (M.L.); (E.M.); (E.S.)
| | - Ernesto Mesto
- Dipartimento di Scienze della Terra e Geoambientali, Università degli Studi di Bari Aldo Moro, Via Edoardo Orabona 4, 70125 Bari, Italy; (M.L.); (E.M.); (E.S.)
| | - Serena Reggi
- Dipartimento di Medicina Veterinaria e Scienze Animali—DIVAS, Università degli Studi di Milano, Via dell’Università 6, 26900 Lodi, Italy; (M.D.); (S.R.); (L.R.)
| | - Luciana Rossi
- Dipartimento di Medicina Veterinaria e Scienze Animali—DIVAS, Università degli Studi di Milano, Via dell’Università 6, 26900 Lodi, Italy; (M.D.); (S.R.); (L.R.)
| | - Emanuela Schingaro
- Dipartimento di Scienze della Terra e Geoambientali, Università degli Studi di Bari Aldo Moro, Via Edoardo Orabona 4, 70125 Bari, Italy; (M.L.); (E.M.); (E.S.)
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Arrigoni A, Marveggio D, Allievi F, Dotelli G, Scaccabarozzi G. Environmental and health-related external costs of meat consumption in Italy: estimations and recommendations through life cycle assessment. Sci Total Environ 2023; 869:161773. [PMID: 36707004 DOI: 10.1016/j.scitotenv.2023.161773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 01/11/2023] [Accepted: 01/19/2023] [Indexed: 06/18/2023]
Abstract
The literature on the external costs of food consumption is limited. This study aims at advancing in this field by translating the environmental and health-related impacts generated by the life-cycle of meat into external costs via monetization. The main types of meat consumed in Italy are used as a case study. The potential external costs are estimated via attributional life cycle assessment (LCA), using: i) the ReCiPe method for the environmental impact assessment (fourteen impact categories), ii) the population attributional fractions for the health damage from meat ingestion, and iii) the CE Delft environmental prices for monetization. Results show that processed pork and beef generate the highest costs on society, with an external cost of approximately 2€ per 100 g. Fresh pork and poultry follow, with a cost of 1€ and 0.5€ per 100 g, respectively. For comparison, the potential external costs of legumes (i.e., a plant-based alternative to meat) are estimated to be from eight to twenty times lower than meat (around 0.05€ per 100 g of legumes). In 2018, meat consumed in Italy potentially generated a cost on society of 36.6 bn€. The burden arises almost equally from impacts generated before meat ingestion (mainly associated with the emissions arisen from farming), and after the ingestion (due to diseases potentially associated with meat consumption). A sensitivity analysis on the main parameters revealed a large uncertainty on the final yearly cost, ranging from 19 to 93 bn€. Although more research is needed to improve the accuracy and the validity of the models used in the study (e.g., human health impact assessment, monetization) and to include potential external costs currently unaccounted for (e.g., water use, animal welfare, occupational health), results show unequivocal significant costs associated with meat consumption. We thus advocate for policies aimed at reducing these costs and allocating them properly.
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Affiliation(s)
- Alessandro Arrigoni
- Simbio Onlus - Sistemi Innovativi di Mantenimento della Biodiversità, 23889 Santa Maria Hoè, Italy; Demetra Società Cooperativa Sociale Onlus, 20842 Besana Brianza, Italy.
| | - Davide Marveggio
- Demetra Società Cooperativa Sociale Onlus, 20842 Besana Brianza, Italy
| | - Francesca Allievi
- Simbio Onlus - Sistemi Innovativi di Mantenimento della Biodiversità, 23889 Santa Maria Hoè, Italy; Jamk University of Applied Sciences, 40200 Jyväskylä, Finland
| | - Giovanni Dotelli
- Department of Chemistry, Materials and Chemical Engineering "G.Natta", Politecnico di Milano, 20133 Milano, Italy
| | - Guido Scaccabarozzi
- Simbio Onlus - Sistemi Innovativi di Mantenimento della Biodiversità, 23889 Santa Maria Hoè, Italy; Demetra Società Cooperativa Sociale Onlus, 20842 Besana Brianza, Italy
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Di Virgilio M, Basso Peressut A, Pontoglio A, Latorrata S, Dotelli G. Study of Innovative GO/PBI Composites as Possible Proton Conducting Membranes for Electrochemical Devices. Membranes (Basel) 2023; 13:428. [PMID: 37103855 PMCID: PMC10143660 DOI: 10.3390/membranes13040428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/23/2023] [Accepted: 04/11/2023] [Indexed: 06/19/2023]
Abstract
The appeal of combining polybenzimidazole (PBI) and graphene oxide (GO) for the manufacturing of membranes is increasingly growing, due to their versatility. Nevertheless, GO has always been used only as a filler in the PBI matrix. In such context, this work proposes the design of a simple, safe, and reproducible procedure to prepare self-assembling GO/PBI composite membranes characterized by GO-to-PBI (X:Y) mass ratios of 1:3, 1:2, 1:1, 2:1, and 3:1. SEM and XRD suggested a homogenous reciprocal dispersion of GO and PBI, which established an alternated stacked structure by mutual π-π interactions among the benzimidazole rings of PBI and the aromatic domains of GO. TGA indicated a remarkable thermal stability of the composites. From mechanical tests, improved tensile strengths but worsened maximum strains were observed with respect to pure PBI. The preliminary evaluation of the suitability of the GO/PBI X:Y composites as proton exchange membranes was executed via IEC determination and EIS. GO/PBI 2:1 (IEC: 0.42 meq g-1; proton conductivity at 100 °C: 0.0464 S cm-1) and GO/PBI 3:1 (IEC: 0.80 meq g-1; proton conductivity at 100 °C: 0.0451 S cm-1) provided equivalent or superior performances with respect to similar PBI-based state-of-the-art materials.
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Affiliation(s)
| | | | | | - Saverio Latorrata
- Correspondence: (A.B.P.); (S.L.); Tel.: +39-02-2399-3190 (A.B.P. & S.L.)
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Basso Peressut A, Cristiani C, Dotelli G, Dotti A, Latorrata S, Bahamonde A, Gascó A, Hermosilla D, Balzarotti R. Reduced Graphene Oxide/Waste-Derived TiO 2 Composite Membranes: Preliminary Study of a New Material for Hybrid Wastewater Treatment. Nanomaterials (Basel) 2023; 13:nano13061043. [PMID: 36985937 PMCID: PMC10055702 DOI: 10.3390/nano13061043] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/07/2023] [Accepted: 03/11/2023] [Indexed: 06/01/2023]
Abstract
This work reports the preliminary results of the development of composite self-assembling membranes obtained by the combination of reduced graphene oxide (rGO) with commercial Degussa P25 titanium dioxide (TiO2). The purpose is to demonstrate the possibility of combining, in the same self-standing material, the capability to treat wastewater containing both inorganic and organic pollutants by exploiting the established ability of rGO to capture metal ions together with that of TiO2 to degrade organic substances. Moreover, this study also investigates the potential photocatalytic properties of tionite (TIO), to demonstrate the feasibility of replacing commercial TiO2 with such waste-derived TiO2-containing material, fulfilling a circular economy approach. Thus, rGO-TiO2 and rGO-TIO composite membranes, 1:1 by weight, were prepared and characterized by SEM-EDX, XRD, thermogravimetry, as well as by Raman and UV-Vis spectroscopies to verify the effective and homogeneous integration of the two components. Then, they were tested towards 3-mg L-1 aqueous synthetic solutions of Fe3+ and Cu2+ ions to evaluate their metal adsorption ability, with values of the order of 0.1-0.2 mmol gmembrane-1, comparable or even slightly higher than those of pristine rGO. Finally, the ability of the composites to degrade a common organic pesticide, i.e., Imidacloprid®, was assessed in preliminary photocatalysis experiments, in which maximum degradation efficiencies of 25% (after 3 h) for rGO-TiO2 and of 21% (after 1 h) for rGO-TIO were found. The result of tionite-containing membranes is particularly promising and worthy of further investigation, given that the anatase content of tionite is roughly 1/6 of the one in commercial TiO2.
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Affiliation(s)
- Andrea Basso Peressut
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milan, Italy
| | - Cinzia Cristiani
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milan, Italy
| | - Giovanni Dotelli
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milan, Italy
| | - Anna Dotti
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milan, Italy
| | - Saverio Latorrata
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milan, Italy
| | - Ana Bahamonde
- Instituto de Catálisis y Petroleoquímica, Consejo Superior de Investigaciones Científicas, Calle de Marie Curie 2, 28049 Madrid, Spain
| | - Antonio Gascó
- Departamento de Ingeniería y Gestión Forestal y Ambiental, Universidad Politécnica de Madrid, Calle de José Antonio Novais 10, 28040 Madrid, Spain
| | - Daphne Hermosilla
- Departamento de Ingeniería y Gestión Forestal y Ambiental, Universidad Politécnica de Madrid, Calle de José Antonio Novais 10, 28040 Madrid, Spain
| | - Riccardo Balzarotti
- Department of Innovative Technologies, University of Applied Sciences and Arts of Southern Switzerland, Via la Santa 1, 6962 Lugano, Switzerland
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Gallo Stampino P, Riva L, Caruso M, Rahman IA, Elegir G, Bussini D, Marti-Rujas J, Dotelli G, Punta C. Can TEMPO-Oxidized Cellulose Nanofibers Be Used as Additives in Bio-Based Building Materials? A Preliminary Study on Earth Plasters. Materials (Basel) 2022; 16:74. [PMID: 36614411 PMCID: PMC9820849 DOI: 10.3390/ma16010074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/12/2022] [Accepted: 12/15/2022] [Indexed: 06/17/2023]
Abstract
Interest towards cellulose nanofibers obtained from virgin and waste sources has seen a significant growth, mainly thanks to the increasing sensitivity towards the concept of circular economy and the high levels of paper recycling achieved in recent years. Inspired by the guidelines of the green building industry, this study proposes the production and characterization of TEMPO-oxidized and homogenized cellulose nanofibers (TOHO CNF) from different sources and their use as additives for earth plasters on two different raw earth samples, characterized by geotechnical laboratory tests and mineralogical analysis: a high-plasticity clay (T2) and a medium-compressibility silt (ABS). Original sources, including those derived from waste (recycled cardboard and paper mill sludge), were characterized by determining chemical content (cellulose versus ashes and lignin) and fiber morphology. TOHO CNF derived from the different sources were compared in terms of nanofibers medium diameter, crystallinity degree, thermal decomposition and oxidation degree, that is the content of carboxylic groups per gram of sample. Then, a preliminary analysis of the influence of CNF on earth plasters is examined. Adhesion and capillary absorption tests highlighted the effect of such nanofibers on blends in function of two factors, namely the cellulose original source and the oxidation degree of the fibers. In particular, for both earth samples, T2 and ABS, a significant increase in adhesion strength was observed in the presence of some TOHO CNF additives. As far as capillary sorption tests, while an undesired increase in water adsorption was detected for T2 compared to the control, in the case of ABS, a significant reduction in water content was measured by adding TOHO CNF derived from recycled sources. These results pave the way for further in-depth investigation on the role of TOHO CNF as additives for earth plasters.
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Affiliation(s)
- Paola Gallo Stampino
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta” and INSTM Local Unit, Politecnico di Milano, 20133 Milan, Italy
| | - Laura Riva
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta” and INSTM Local Unit, Politecnico di Milano, 20133 Milan, Italy
| | - Marco Caruso
- Materials Testing Laboratory, Politecnico di Milano, 20133 Milan, Italy
| | - Imran Abdul Rahman
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta” and INSTM Local Unit, Politecnico di Milano, 20133 Milan, Italy
| | - Graziano Elegir
- Innovhub Stazioni Sperimentali per l’Industria S.r.l., Via Giuseppe Colombo 83, 20133 Milan, Italy
| | - Daniele Bussini
- Innovhub Stazioni Sperimentali per l’Industria S.r.l., Via Giuseppe Colombo 83, 20133 Milan, Italy
| | - Javier Marti-Rujas
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta” and INSTM Local Unit, Politecnico di Milano, 20133 Milan, Italy
| | - Giovanni Dotelli
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta” and INSTM Local Unit, Politecnico di Milano, 20133 Milan, Italy
| | - Carlo Punta
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta” and INSTM Local Unit, Politecnico di Milano, 20133 Milan, Italy
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Losini AE, Grillet AC, Woloszyn M, Lavrik L, Moletti C, Dotelli G, Caruso M. Mechanical and Microstructural Characterization of Rammed Earth Stabilized with Five Biopolymers. Materials (Basel) 2022; 15:3136. [PMID: 35591470 PMCID: PMC9104653 DOI: 10.3390/ma15093136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/19/2022] [Accepted: 04/21/2022] [Indexed: 02/05/2023]
Abstract
This study aims to check the compatibility of a selection of waste and recycled biopolymers for rammed earth applications in order to replace the more common cement-based stabilization. Five formulations of stabilized rammed earth were prepared with different biopolymers: lignin sulfonate, tannin, sheep wool fibers, citrus pomace and grape-seed flour. The microstructure of the different formulations was characterized by investigating the interactions between earth and stabilizers through mercury intrusion porosimetry (MIP), nitrogen soprtion isotherm, powder X-ray diffraction (XRD) and scanning electron microscopy (SEM). The unconfined compressive strength (UCS) was also evaluated for all stabilized specimens. Three out of five biopolymers were considered suitable as rammed earth stabilizers. The use of wool increased the UCS by 6%, probably thanks to the combined effect of the length of the fibers and the roughness of their surfaces, which gives a contribution in binding clay particles higher than citrus and grape-seed flour. Lignin sulfonate and tannin increased the UCS by 38% and 13%, respectively, suggesting the additives' ability to fill pores, coat soil grains and form aggregates; this capability is confirmed by the reduction in the specific surface area and the pore volume in the nano- and micropore zones.
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Affiliation(s)
| | - Anne-Cecile Grillet
- LOCIE, CNRS, Universite Savoie Mont Blanc, 73000 Chambery, France; (A.-C.G.); (M.W.)
| | - Monika Woloszyn
- LOCIE, CNRS, Universite Savoie Mont Blanc, 73000 Chambery, France; (A.-C.G.); (M.W.)
| | - Liudmila Lavrik
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, 20133 Milano, Italy; (L.L.); (C.M.); (G.D.)
| | - Chiara Moletti
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, 20133 Milano, Italy; (L.L.); (C.M.); (G.D.)
| | - Giovanni Dotelli
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, 20133 Milano, Italy; (L.L.); (C.M.); (G.D.)
| | - Marco Caruso
- Material Testing Laboratory, Politecnico di Milano, 20133 Milano, Italy;
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D'Agostino D, Parker D, Melià P, Dotelli G. Data on roof renovation and photovoltaic energy production including energy storage in existing residential buildings. Data Brief 2022; 41:107874. [PMID: 35141376 PMCID: PMC8814756 DOI: 10.1016/j.dib.2022.107874] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 01/19/2022] [Accepted: 01/21/2022] [Indexed: 11/16/2022] Open
Abstract
This data article refers to the paper "Optimizing photovoltaic electric generation and roof insulation in existing residential buildings” [1]. The reported data deal with roof retrofit in different types of existing residential buildings (single-family, multi-family and apartment complex) located in Milan (Northern Italy). The study focus on the optimization of envelope insulation and photovoltaic (PV) energy production associated with different building geometries, initial insulation level, roof constructions, and materials. The data linked within this article relate to the modelled building energy consumption, renewable production, potential energy savings, and costs. Data refer to two main scenarios: refurbishment (roof in need of replacement and insulation) and re-roofing (energy intervention for roof improvement). Data allow to visualize energy consumption before and after the optimization, selected insulation level and material, costs and PV renewable production (with and without energy storage). The reduction of energy consumption can be visualized for each building type and scenario. Further data is available on CO2 emissions, envelope, materials, and systems.
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Affiliation(s)
- Delia D'Agostino
- European Commission, Joint Research Centre (JRC), Ispra (VA), Italy
- Corresponding author. @deliadago
| | - Danny Parker
- Florida Solar Energy Center, University of Central Florida, USA
| | - Paco Melià
- Politecnico di Milano, Dipartimento di Elettronica, Informazione e Bioingegneria, Milan, Italy
| | - Giovanni Dotelli
- Politecnico di Milano, Department of Chemistry, Materials and Chemical Engineering, Milan, Italy
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Basso Peressut A, Di Virgilio M, Bombino A, Latorrata S, Muurinen E, Keiski RL, Dotelli G. Investigation of Sulfonated Graphene Oxide as the Base Material for Novel Proton Exchange Membranes. Molecules 2022; 27:molecules27051507. [PMID: 35268613 PMCID: PMC8912047 DOI: 10.3390/molecules27051507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 02/20/2022] [Accepted: 02/22/2022] [Indexed: 11/16/2022]
Abstract
This work deals with the development of graphene oxide (GO)-based self-assembling membranes as possible innovative proton conductors to be used in polymer electrolyte membrane fuel cells (PEMFCs). Nowadays, the most adopted electrolyte is Chemours’ Nafion; however, it reveals significant deficiencies such as strong dehydration at high temperature and low humidity, which drastically reduces its proton conductivity. The presence of oxygenated moieties in the GO framework makes it suitable for functionalization, which is required to enhance the promising, but insufficient, proton-carrying features of GO. In this study, sulfonic acid groups (–SO3H) that should favor proton transport were introduced in the membrane structure via a reaction between GO and concentrated sulfuric acid. Six acid-to-GO molar ratios were adopted in the synthesis procedure, giving rise to final products with different sulfonation degrees. All the prepared samples were characterized by means of TGA, ATR-FTIR and Raman spectroscopy, temperature-dependent XRD, SEM and EDX, which pointed out morphological and microstructural changes resulting from the functionalization stage, confirming its effectiveness. Regarding functional features, electrochemical impedance spectroscopy (EIS) as well as measurements of ion exchange capacity (IEC) were carried out to describe the behavior of the various samples, with pristine GO and commercial Nafion® 212 used as reference. EIS tests were performed at five different temperatures (20, 40, 60, 80 and 100 °C) under high (95%) and medium (42%) relative humidity conditions. Compared to both GO and Nafion® 212, the sulfonated specimens demonstrate an increase in the number of ion-carrying groups, as proved by both IEC and EIS tests, which reveal the enhanced proton conductivity of these novel membranes. Specifically, an acid-to-GO molar ratio of 10 produces a six-fold improvement of IEC (4.23 meq g−1) with respect to pure GO (0.76 meq g−1), while a maximum eight-fold improvement (5.72 meq g−1) is achieved in SGO-15.
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Affiliation(s)
- Andrea Basso Peressut
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy; (A.B.P.); (A.B.); (S.L.)
| | - Matteo Di Virgilio
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy; (A.B.P.); (A.B.); (S.L.)
- Correspondence: (M.D.V.); (G.D.)
| | - Antonella Bombino
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy; (A.B.P.); (A.B.); (S.L.)
| | - Saverio Latorrata
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy; (A.B.P.); (A.B.); (S.L.)
| | - Esa Muurinen
- Environmental and Chemical Engineering Research Unit, Faculty of Technology, University of Oulu, Pentti Kaiteran katu 1, FI-90014 Oulu, Finland; (E.M.); (R.L.K.)
| | - Riitta L. Keiski
- Environmental and Chemical Engineering Research Unit, Faculty of Technology, University of Oulu, Pentti Kaiteran katu 1, FI-90014 Oulu, Finland; (E.M.); (R.L.K.)
| | - Giovanni Dotelli
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy; (A.B.P.); (A.B.); (S.L.)
- Correspondence: (M.D.V.); (G.D.)
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Cristiani C, Iannicelli-Zubiani EM, Bellotto M, Dotelli G, Stampino PG, Latorrata S, Ramis G, Finocchio E. Capture Mechanism of La and Cu Ions in Mixed Solutions by Clay and Organoclay. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05333] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cinzia Cristiani
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milano, Italy
| | - Elena Maria Iannicelli-Zubiani
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milano, Italy
| | - Maurizio Bellotto
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milano, Italy
| | - Giovanni Dotelli
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milano, Italy
| | - Paola Gallo Stampino
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milano, Italy
| | - Saverio Latorrata
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milano, Italy
| | - Gianguido Ramis
- Dipartimento di Ingegneria Civile, Chimica e Ambientale, Università di Genova, Via all’Opera Pia 15, 16145 Genova, Italy
| | - Elisabetta Finocchio
- Dipartimento di Ingegneria Civile, Chimica e Ambientale, Università di Genova, Via all’Opera Pia 15, 16145 Genova, Italy
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11
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Leon-Garzon AR, Dotelli G, Tommasini M, Bianchi CL, Pirola C, Villa A, Lucotti A, Sacchi B, Barbieri L. Experimental Characterization of Polymer Surfaces Subject to Corona Discharges in Controlled Atmospheres. Polymers (Basel) 2019; 11:polym11101646. [PMID: 31658775 PMCID: PMC6836313 DOI: 10.3390/polym11101646] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/24/2019] [Accepted: 10/08/2019] [Indexed: 12/05/2022] Open
Abstract
Polymeric dielectrics are employed extensively in the power transmission industry, thanks to their excellent properties; however, under normal operating conditions these materials tend to degrade and fail. In this study, samples of low-density polyethylene, polypropylene, polymethyl methacrylate, and polytetrafluorethylene were subjected to corona discharges under nitrogen and air atmospheres. The discharges introduced structural modifications over the polymer surface. From a chemical perspective, the alterations are analogous among the non-fluorinated polymers (i.e., polyethylene (PE), polypropylene (PP), and polymethyl methacrylate (PMMA)). A simulation of the corona discharge allowed the identification of highly reactive species in the proximity of the surface. The results are consistent with the degradation of insulating polymers in high-voltage applications due to internal partial discharges that ultimately lead to the breakdown of the material.
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Affiliation(s)
- Andres R Leon-Garzon
- Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta", Politecnico di Milano, 20133 Milano, Italy.
| | - Giovanni Dotelli
- Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta", Politecnico di Milano, 20133 Milano, Italy.
| | - Matteo Tommasini
- Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta", Politecnico di Milano, 20133 Milano, Italy.
| | - Claudia L Bianchi
- Dipartimento di Chimica, Università degli Studi di Milano, 20133 Milano, Italy.
| | - Carlo Pirola
- Dipartimento di Chimica, Università degli Studi di Milano, 20133 Milano, Italy.
| | - Andrea Villa
- Ricerca sul Sistema Energetico (RSE S.p.A.), 20134 Milano, Italy.
| | - Andrea Lucotti
- Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta", Politecnico di Milano, 20133 Milano, Italy.
| | - Benedetta Sacchi
- Dipartimento di Chimica, Università degli Studi di Milano, 20133 Milano, Italy.
| | - Luca Barbieri
- Ricerca sul Sistema Energetico (RSE S.p.A.), 20134 Milano, Italy.
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12
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Recanati F, Marveggio D, Dotelli G. From beans to bar: A life cycle assessment towards sustainable chocolate supply chain. Sci Total Environ 2018; 613-614:1013-1023. [PMID: 28946374 DOI: 10.1016/j.scitotenv.2017.09.187] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 09/18/2017] [Accepted: 09/18/2017] [Indexed: 06/07/2023]
Abstract
The environmental sustainability has emerged as a crucial aspect in the agri-food sector, nevertheless environmental assessments and certifications of cocoa and chocolate are still missing. Given this gap and the increasing global demand for cocoa derivatives, this study aims to evaluate the environmental impacts of an Italian dark chocolate through a holistic cradle-to-grave Life Cycle Assessment (LCA). The impact categories assessed are acidification potential (AC), eutrophication potential (EU), global warming potential (GW), photochemical ozone creation potential (POC), ozone layer depletion potential (OD), abiotic depletion (AD) and cumulative energy demand (CED). The obtained results highlight the relevant contributions of upstream phase (63% for the ODP, 92% for EU and 99% for the AD) and core processes (39% for the GW and 49% for the CED) on the overall impacts. Specifically, cocoa provisioning and energy supply at the manufacturing plant emerged as environmental hotspots and have been deeper investigated through a sensitivity analysis. Obtained outcomes show the significant variability of the environmental impacts due to the agricultural phase (i.e., depending on agroecosystems and practices) and environmental benefits guaranteed by an efficient trigeneration system implemented in the manufacturing plant. The quantification of the environmental impacts of chocolate through LCA, the identification of the main hotspots along the supply chain and the sensitivity analysis performed in this study could effectively support chocolate companies in their pathway towards environmentally sustainable productions.
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Affiliation(s)
- Francesca Recanati
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, via Ponzio 34/5, Milano 20133, Italy.
| | - Davide Marveggio
- Dipartimento di Scienze Agrarie e Ambientali - Produzione, Territorio, Agroenergia, Università degli studi di Milano, via Celoria 2, Milano 20133, Italy
| | - Giovanni Dotelli
- Dipartimento di Chimica, Materiali e Ingegneria Chimica "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, Milano 20133, Italy
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13
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Recanati F, Arrigoni A, Scaccabarozzi G, Marveggio D, Melià P, Dotelli G. LCA Towards Sustainable Agriculture: The Case Study of Cupuaçu Jam from Agroforestry. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.procir.2017.11.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Iannicelli-Zubiani EM, Cristiani C, Dotelli G, Gallo Stampino P. Recovery of valuable metals from electronic scraps by clays and organo-clays: Study on bi-ionic model solutions. Waste Manag 2017; 60:582-590. [PMID: 27478027 DOI: 10.1016/j.wasman.2016.07.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 07/25/2016] [Accepted: 07/25/2016] [Indexed: 06/06/2023]
Abstract
The demand of valuable metals, as precious metals and rare earths, is constantly increasing in the global market, as many and different technological applications exploit these materials because of their unique properties. Since natural resources are located just in focused areas, an interesting possibility could be the recovery of metals from Waste Electrical and Electronic Equipment (WEEE). The aim of this work is to evaluate the recovery potentialities of clays and organo-clay based systems towards the metals contained in the solutions of electronic scraps dissolved in strong acid, by preliminary tests on bi-ionic model solutions. Lanthanum has been chosen as representative of the rare earths while copper has been considered since it is by far the most used metal in electric and electronic equipment. The considered sorbents are a montmorillonitic clay and two polyamine based organo-clays. Uptake and release processes have been carried out in order to assess the performances of these solids and to evaluate the uptake and release mechanisms. The results showed that the cationic exchange is the prevailing mechanism in the case of pristine clay, while both coordinating effect due to amino groups and cationic exchange occur in the case of modified clays, respectively accounting for copper and lanthanum uptake. Furthermore the pH was found having a great influence in both the adsorption and desorption phenomena.
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Affiliation(s)
- Elena Maria Iannicelli-Zubiani
- Politecnico di Milano, Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta", Piazza Leonardo Da Vinci 32, 20133 Milano, Italy.
| | - Cinzia Cristiani
- Politecnico di Milano, Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta", Piazza Leonardo Da Vinci 32, 20133 Milano, Italy
| | - Giovanni Dotelli
- Politecnico di Milano, Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta", Piazza Leonardo Da Vinci 32, 20133 Milano, Italy
| | - Paola Gallo Stampino
- Politecnico di Milano, Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta", Piazza Leonardo Da Vinci 32, 20133 Milano, Italy
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15
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Iannicelli-Zubiani EM, Cristiani C, Dotelli G, Gallo Stampino P, Pelosato R, Mesto E, Schingaro E, Lacalamita M. Use of natural clays as sorbent materials for rare earth ions: Materials characterization and set up of the operative parameters. Waste Manag 2015; 46:546-556. [PMID: 26403388 DOI: 10.1016/j.wasman.2015.09.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 09/14/2015] [Accepted: 09/14/2015] [Indexed: 06/05/2023]
Abstract
Two mineral clays of the montmorillonite group were tested as sorbents for the removal of Rare Earths (REs) from liquid solutions. Lanthanum and neodymium model solutions were used to perform uptake tests in order to: (a) verify the clays sorption capability, (b) investigate the sorption mechanisms and (c) optimize the experimental parameters, such as contact time and pH. The desorption was also studied, in order to evaluate the feasibility of REs recovery from waters. The adsorption-desorption procedure with the optimized parameters was also tested on a leaching solution obtained by dissolution of a dismantled NdFeB magnet of a hard-disk. The clays were fully characterized after REs adsorption and desorption by means of X-ray powder diffraction (XRPD) and X-ray photoelectron spectroscopy (XPS); the liquid phase was characterized via Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES) analyses. The experimental results show that both clays are able to capture and release La and Nd ions, with an ion exchange mechanism. The best total efficiency (capture ≈ 50%, release ≈ 70%) is obtained when the uptake and release processes are performed at pH=5 and pH=1 respectively; in real leached scrap solutions, the uptake is around 40% but release efficiency is strongly decreased passing from a mono-ion system to a real system (from 80% to 5%). Furthermore, a strong matrix effect is found, with the matrix largely affecting both the uptake and the release of neodymium.
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Affiliation(s)
- Elena Maria Iannicelli-Zubiani
- Politecnico di Milano, Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta", Piazza Leonardo Da Vinci 32, 20133 Milano, Italy.
| | - Cinzia Cristiani
- Politecnico di Milano, Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta", Piazza Leonardo Da Vinci 32, 20133 Milano, Italy
| | - Giovanni Dotelli
- Politecnico di Milano, Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta", Piazza Leonardo Da Vinci 32, 20133 Milano, Italy
| | - Paola Gallo Stampino
- Politecnico di Milano, Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta", Piazza Leonardo Da Vinci 32, 20133 Milano, Italy
| | - Renato Pelosato
- Politecnico di Milano, Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta", Piazza Leonardo Da Vinci 32, 20133 Milano, Italy
| | - Ernesto Mesto
- Università degli Studi di Bari "Aldo Moro", Dipartimento di Scienze della Terra e Geoambientali, Via E. Orabona 4, 70125 Bari, Italy
| | - Emanuela Schingaro
- Università degli Studi di Bari "Aldo Moro", Dipartimento di Scienze della Terra e Geoambientali, Via E. Orabona 4, 70125 Bari, Italy
| | - Maria Lacalamita
- Università degli Studi di Bari "Aldo Moro", Dipartimento di Scienze della Terra e Geoambientali, Via E. Orabona 4, 70125 Bari, Italy
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Donazzi A, Pelosato R, Cordaro G, Stucchi D, Cristiani C, Dotelli G, Sora IN. Evaluation of Ba deficient NdBaCo2O5+δ oxide as cathode material for IT-SOFC. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.09.117] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Zampori L, Dotelli G, Vernelli V. Life cycle assessment of hemp cultivation and use of hemp-based thermal insulator materials in buildings. Environ Sci Technol 2013; 47:7413-7420. [PMID: 23745970 DOI: 10.1021/es401326a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The aim of this research is to assess the sustainability of a natural fiber, such as hemp (Cannabis sativa), and its use as thermal insulator for building applications. The sustainability of hemp was quantified by life cycle assessment (LCA) and particular attention was given to the amount of CO2eq of the whole process, and the indicator greenhouse gas protocol (GGP) was selected to quantify CO2eq emissions. In this study also CO2 uptake of hemp was considered. Two different allocation procedures (i.e., mass and economic) were adopted. Other indicators, such as Cumulative Energy Demand (CED) and EcoIndicator99 H were calculated. The production of 1 ha yielded 15 ton of hemp, whose global warming potential (GWP100) was equal to about -26.01 ton CO2eq: the amount allocated to the technical fiber (20% of the total amount of hemp biomass) was -5.52 ton CO2eq when mass allocation was used, and -5.54 ton CO2eq when economic allocation was applied. The sustainability for building applications was quantified by considering an insulation panel made by hemp fiber (85%) and polyester fiber (15%) in 1 m(2) of wall having a thermal transmittance (U) equal to 0.2 W/m(2)_K. The environmental performances of the hemp-based panel were compared to those of a rockwool-based one.
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Affiliation(s)
- Luca Zampori
- Department of Chemistry, Materials, and Chemical Engineering G. Natta, Politecnico di Milano, INSTM RU-POLIMI p.zza L. da Vinci 32, 20133 Milano, Italy.
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Finocchio E, Baccini I, Cristiani C, Dotelli G, Gallo Stampino P, Zampori L. Hybrid Organo–Inorganic Clay with Nonionic Interlayers. Mid- and Near-IR Spectroscopic Studies. J Phys Chem A 2011; 115:7484-93. [DOI: 10.1021/jp200845e] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Elisabetta Finocchio
- Dipartimento di Ingegneria Chimica e di Processo “G. B. Bonino”, P. le Kennedy 1, Università di Genova, 16129 Genova, Italy
| | - Irene Baccini
- Dipartimento di Ingegneria Chimica e di Processo “G. B. Bonino”, P. le Kennedy 1, Università di Genova, 16129 Genova, Italy
| | - Cinzia Cristiani
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Giovanni Dotelli
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Paola Gallo Stampino
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Luca Zampori
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
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Zampori L, Stampino PG, Dotelli G. Long-term leaching test of organo-contaminated cement-clay pastes. J Hazard Mater 2009; 170:1041-1049. [PMID: 19524362 DOI: 10.1016/j.jhazmat.2009.05.076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2008] [Revised: 05/14/2009] [Accepted: 05/17/2009] [Indexed: 05/27/2023]
Abstract
The aim of the present work is to investigate the effect of a prolonged leaching test (more than a year) on the microstructure of solidified cementitious wasteforms. A set of four different cement-based monoliths (Ap, Bp, Cp and Dp) was prepared, and for each series an uncontaminated sample was prepared as reference (A-D). An organoclay was added in all pastes as pre-sorbent material for the pollutant; a model liquid organic pollutant, 2-chloroaniline (2-CA), was added only in the contaminated ones and different types of admixtures, chosen among those typically employed in the concrete mix-design, were used. After the first 28 days of curing, all the monoliths, contaminated and uncontaminated, underwent a dynamic leach testing (DLT) for more than 1 year in deionized water.
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Affiliation(s)
- L Zampori
- Dipartimento di Chimica, Materiali e Ingegneria Chimica 'G.Natta', INSTM R.U.-Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milano, Italy
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20
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Gallo Stampino P, Cristiani C, Dotelli G, Omati L, Zampori L, Pelosato R, Guilizzoni M. Effect of different substrates, inks composition and rheology on coating deposition of microporous layer (MPL) for PEM-FCs. Catal Today 2009. [DOI: 10.1016/j.cattod.2009.07.023] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Gallo Stampino P, Zampori L, Dotelli G, Meloni P, Sora IN, Pelosato R. Use of admixtures in organic-contaminated cement-clay pastes. J Hazard Mater 2009; 161:862-870. [PMID: 18514398 DOI: 10.1016/j.jhazmat.2008.04.056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2007] [Revised: 04/09/2008] [Accepted: 04/13/2008] [Indexed: 05/26/2023]
Abstract
In this work microstructure, porosity and hydration degree of cement-based solidified/stabilized wasteforms were studied before assessing their leaching behaviour. 2-Chloroaniline was chosen as a model liquid organic pollutant and included into cement pastes, which were also modified with different admixtures for concrete: a superplasticizer based on acrylic-modified polymer, a synthetic rubber latex and a waterproofing agent. An organoclay, modified with an ammonium quaternary salt (benzyl-dimethyl-tallowammonium, BDMTA), was added to the pastes as pre-sorbent agent of the organic matter. All the samples were dried up to constant weight in order to stop the hydration process at different times during the first 28 days of curing, typically, after 1 day (1d), 7 days (7d) and 28 days. Then, the microstructure of the hardened cement-clay pastes was investigated by powder X-ray diffraction (XRD). The hydration degree and porosity were studied by thermal analysis (TG/DTA) and mercury intrusion porosimetry (MIP), respectively. For samples cured for 28 days a short-term leach test set by Italian regulation for industrial waste recycling (D.M. 5 February 1998) was performed. The best results showed a 5% release of the total initial amount of organic pollutant.
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Affiliation(s)
- Paola Gallo Stampino
- Politecnico di Milano, Dipartimento di Chimica, Materiali e Ingegneria Chimica "G. Natta", R.U. INSTM, p.zza L. da Vinci 32, 20133 Milano, Italy.
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22
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Dotelli G, Stampino PG, Zampori L, Sora IN, Pelosato R. Immobilization of organic pollutants in cement pastes admixed with organophilic materials. Waste Manag Res 2008; 26:515-522. [PMID: 19039067 DOI: 10.1177/0734242x08095072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The results of 2-chloroaniline (2-CA) immobilization experiments in cement matrices, using an organophilic clay modified with phenolic resins as pre-sorbent, are shown. The 2-CA suspended in water was kept in contact with the organoclay for 24 h, and the slurry obtained was then admixed with ordinary Portland cement (OPC) without additional water, to obtain a firm solid waste. Six cement-clay pastes were prepared with the same water-to-cement ratio (0.50 wt/wt), but with different slurry composition (water-to-organoclay ratio equal to 10 and 5 wt/wt, respectively) and different amounts of 2-CA suspended in water, namely 5000, 15 000, and 25 000 ppmw (weight). Dynamic leach tests were performed on solidified monoliths in order to assess the successful immobilization of the 2-CA. Moreover, X-ray diffraction, scanning electron microscopy and Fourier transform infrared spectroscopy analyses were carried out.
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Affiliation(s)
- Giovanni Dotelli
- Department of Chemistry, Materials and Chemical Engineering "G. INSTM R.U.-Polimi, Politecnico di Milano, Milano, Italy.
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23
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Gussoni M, Greco F, Bonazzi F, Vezzoli A, Botta D, Dotelli G, Natali Sora I, Pelosato R, Zetta L. 1H NMR spin-spin relaxation and imaging in porous systems: an application to the morphological study of white portland cement during hydration in the presence of organics. Magn Reson Imaging 2004; 22:877-89. [PMID: 15234458 DOI: 10.1016/j.mri.2004.01.068] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2003] [Accepted: 01/30/2004] [Indexed: 11/16/2022]
Abstract
Proton nuclear magnetic resonance (NMR) spin-spin relaxation and imaging have been applied to investigate white Portland cement pastes during hydration in the absence and in the presence of organic solvents. The main organic solvent investigated was methanol, alone or together with the organic waste 2-chloroaniline (2-CA), an aromatic amine representative of an important class of highly toxic compounds. For all the analysed samples, prepared with a solvent-to-cement ratio of 0.4, the decay of the echo magnetization has been fitted by adopting a model that combines an exponential component with a gaussian one. The calculated independent relaxation parameters have been discussed in terms of morphological and dynamical changes that occur during the cement hardening process and pore formation. Three kinds of water molecules: "solid-like" (chemically and physically bound), "liquid-like" (porous trapped) and "free" water, endowed with anisotropic, near isotropic and isotropic motion, respectively, were identified. Spin-echo images collected on the same samples during the hydration kinetics, allowed the changes of water and solvents spatial distribution in the porous network to be monitored, showing percolation phenomena and confirming the multimodal open channels structure of the hardened cement system. Both T(2) relaxation and imaging data indicated that a pronounced delay occurs in the cement hardening when organics are present.
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Affiliation(s)
- M Gussoni
- Dipartimento di Scienze e Tecnologie Biomediche, Università di Milano, 20090 Segrate (Mi), Italy.
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Botta D, Dotelli G, Biancardi R, Pelosato R, Natali Sora I. Cement-clay pastes for stabilization/solidification of 2-chloroaniline. Waste Manag 2004; 24:207-216. [PMID: 14761760 DOI: 10.1016/j.wasman.2003.10.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/21/2003] [Indexed: 05/24/2023]
Abstract
Immobilization of a model liquid organic pollutant, i.e. the 2-chloroaniline (2-CA), into a cement matrix using organoclays as pre-sorbent agents was investigated. Five cement-clay pastes were prepared with different nominal water-to-cement ratios (w/c=0.40, 0.25 and 0.15 wt/wt) and various amounts of waste (waste-to-cement o/c=0.20, 0.60 and 1.00 wt/wt); for comparison, a neat cement paste was also prepared. Dynamic leach tests were performed on solidified monoliths in order to assess the successful immobilization of the 2-CA. In monoliths at constant w/c ratio (0.40) the total amount of pollutant released increases with its initial content, and ranges from 15 to 35% with respect to it. By lowering w/c from 0.40 to 0.15 at constant o/c, the performances improved (<25% released). The microstructure of the hardened cement-clay pastes was characterized by quantitative X-ray diffraction (QXRD) and electronic microscopy (SEM-EDS) techniques; hydration degree was estimated by means of thermogravimetric analysis (TGA) in addition to QXRD. No evidence of any chemical reaction between 2-CA and cement phases was found. Moreover, it was shown that the most important factors affecting the cement hydration process were the total water content, i.e. the one taking also into account the water contained in the wet polluted clay, and the amount of 2-CA not firmly sorbed by the organoclay, and then freely dispersed in the paste.
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Affiliation(s)
- Donatella Botta
- Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta", Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milano, Italy.
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