Search results for "WASTE"
showing 10 items of 2580 documents
Development of New Bio-based Materials Derived from Sicilian Agri-Food Industry Waste
2023
La necessità di soluzioni di materiali da costruzione a base biologica e sostenibili è aumentata drammaticamente nell’ultimo ventennio. Questa ricerca esplora i possibili modi per riutilizzare materiale di scarto a base biologica (come i gusci della frutta secca), derivati dall'industria agroalimentare, per la produzione di nuovi materiali da costruzione sani in linea con i principi dell'economia circolare. L’analisi di alcuni casi di studio precedenti e le attuali ricerche dimostrato la possibilità di riutilizzare i gusci della frutta secca per la realizzazione di nuovi componenti edilizi. Le attuali tendenze mostrano che le resine sintetiche sono sempre più usati come legante per incollar…
Packaging and plastic are synonymous with waste: But is that really the case?
2022
The paper presents the value of packaging and misconceptions about plastic. In addition to shedding light on clichés and fake news about plastic and packaging, it outlines opportunities to consider the use and management of packaging for responsible waste collection; and new forms of consumption and supply chains to facilitate the transition from the current linear consumption model to one that is more responsible and open to a circular economy.
Sine cura. Verso il ri-ciclo dell'architettura del secondo Novecento
2019
Gli argomenti discussi nel saggio interrogano il destino che il Codice dei Beni Culturali (2004- 2011) determina per le opere del secondo Novecento. Nella costruzione del futuro di questi manufatti, che per funzione, tecnologia e cicli d’uso sono spesso segnati dall’obsolescenza e dall’abbandono, le ambiguità e le incongruenze delle attuali procedure legislative sollecitano profondamente il ruolo culturale delle esperienze di ricerca che usano metodologie meta progettuali. Il confronto fra alcuni casi italiani ed altri europei rimarca il ruolo del progetto nella costruzione di una prospettiva di tutela trasformativa per il costruito del secondo Novecento. Nel quadro di azione marcato dall’o…
Città, economia circolare e pianificazione urbanistica
2019
Il progressivo sviluppo delle interdipendenze economiche a scala globale ha influenzato anche la rapida crescita della produzione d’inquinanti e rifiuti di ogni sorta, richiamando l’attenzione della comunità europea e delle nazioni unite sulle politiche urbane, la loro efficacia e la loro integrazione. Le città e le regioni urbane costituiscono le maggiori aree di criticità dove si concentra la maggiore produzione di rifiuti urbani con impatti negativi sulla salute umana e sull’ambiente. Per lungo tempo l’aumento dei rifiuti urbani è stato considerato, come altri inquinanti, un problema alla coda di ogni processo produttivo e di consumo ed è stato affrontato con strumenti settoriali, come d…
Knock Resistance Increase through the Addition of Natural Gas or LPG to Gasoline: An Experimental Study
2013
Bi-fuel spark ignition engines, nowadays widely spread, are usually equipped with two independent injection systems, in order run the engine either with gasoline or with gaseous fuel, which can be Natural Gas (NG) or Liquefied Petroleum Gas (LPG). These gases, besides lower cost and environmental impact, are also characterized by a higher knock resistance with respect to gasoline that allows to adopt a stoichiometric proportion with air also at full load. Gasoline, on the other hand, being injected as liquid, maintains higher volumetric efficiency and hence higher power output. As a compromise solution, it could be desired to exploit the advantages of both gasoline and gas (NG or LPG), thus…
From biomass waste to tri-generation: a life-cycle experience in the “agro-combined” of Thibar
2018
The paper presents a Life Cycle Assessment of the energy tri-generation from biomass waste in a plant located in Tunisia. The analysis included the plant construction and end-of-life, the supply of biomass, its use for biogas production and the electricity, heating and cooling generation from biogas. The study is one of the first applications of environmental analysis to tri-generation from biomass waste in developing countries. The results showed that the plant construction is responsible of 76% of primary energy consumption and gives a contribution higher than 88% on resource depletion and ionising radiation. The operation causes 66% of the impact on human toxicity - cancer effects and mo…
The emission saving related to the use of renewable energy sources: The case study of solar thermal collectors
2003
The employment of renewable energy sources can represent a useful way to reduce air emissions released by conventional ones. In this paper we describe the results of a Life Cycle Analysis performed upon one of the most world-wide diffused renewable technologies: the solar thermal collectors for warm sanitary water. Two domestic solar plants have been investigated: mono-familiar plant with a passive flat collector and a large solar plant with forced fluid circulation. The first step has been the evaluation of direct and indirect emissions related to the production and use of plants. The main emissions have been categorised in three of the most important indicators (Global Warming Potential, …
Retrofitting existing buildings by means of innovative envelope components: low-impacting new assemblies
2020
Current policies addressing the energy efficiency of buildings aimed at the control of their overall primary energy demand, require not only that the edifice envelope has to be properly designed to optimize its thermal performances, but also that the eco-friendly properties of the involved building materials have to be properly taken into account, in order of assessing all the associated environmental costs. In fact, the design of envelope structures that are able to realize proper levels of thermal insulation and, in the same time, to employ materials characterized by low environmental impacts, are believed as the most effective strategies to be adopted in the aim of addressing the above-m…
Combined Oxidation-Gasification system for waste treatment with supercritical water: LCA and performance analysis
2020
In this study the environmental performance of a first of a kind integrated process based on supercritical water gasification and supercritical water oxidation, was evaluated using Life Cycle Assessment (LCA). The process was applied to the treatment of carbon black and used oil as model waste. Mass and energy balances were performed using Aspen Plus, and the environmental assessment was carried out through SimaPro. For the analysis was chosen a “From cradle to grave” approach, considering impact categories like climate change, ozone depletion, human toxicity, particulate matter, land use, resource depletion and others relevant indicators. The environmental profile of SCW-GcO process was co…
Insulating Building Components Made from a Mixture of Waste and Vegetal Materials: Thermal Characterization of Nine New Products
2021
Nowadays, energy efficiency and sustainability are the fulcra of building policies. These policies promote the use of new technologies and materials that can reduce the primary energy involved and the environmental costs of construction, guarantying at the same time a high level of comfort for the building’s occupants. Synergy between previous construction techniques and the use of new materials should be pursued by employing materials with a low environmental impact and optimal thermal insulation properties. Within this framework, new materials derived from the agriculture sector, and waste or recycling products from the industrial/agricultural sectors have been studied. The aim of this pa…