Search results for "Solid"
showing 10 items of 3575 documents
Fútbol y mundialización
2002
El gobierno de la sociedad-mundo
2004
Marcos y la sociedad civil global
2001
El abrazo del oso
2004
Carta desde Europa
2002
Respuesta a "Carta de América" en español, francés, e inglés. El texto fue enviado a "Le Monde", "El País" y posiblemente también a "The Guardian" y "Le monde diplomatique". Se desconoce si el manifiesto finalmente se publicó en alguno de estos medios (u otros).
Greenhouse gas emissions from integrated solid waste management: a new mathematical model
2016
Municipal solid waste management significantly contributes to the emission in the atmosphere of greenhouse gases (e.g. CO2, CH4, N2O) and therefore the management process from collection to treatment and disposal has to be optimized in order to reduce these emissions. Many literature models developed for the evaluation of greenhouses gases emissions from the waste management system are based on the analysis of the life cycle. These models are not optimized for evaluation of emissions. The aim of this study is to overcome these limitations by proposing a mathematical model to estimate greenhouse gas emissions resulting from the integrated waste management. The model is aimed to be a verifica…
The role of the transportation phase for a green management of municipal solid waste
2017
Municipal solid waste management (MSWM) constitutes a high challenging issue to cope with to move towards sustainability of the urban policies. Despite new standards call for recycling and reusing materials contained in the city waste, several municipalities still use extensive landfills. Other than the environmental pressure exerted by these plants, the waste transportation from the recovery points of towns to landfills needs consideration to correctly assess the whole burden of the waste management. In this paper, the Ecological Footprint indicator is applied to the MSWM of the town of Palermo (Sicily). Results show that the effects produced by the involved transportation vehicles, both i…
Potential use of the organic fraction of municipal solid waste in anaerobic co-digestion with wastewater in submerged anaerobic membrane technology
2016
Food waste was characterized for its potential use as substrate for anaerobic co-digestion in a submerged anaerobic membrane bioreactor pilot plant that treats urban wastewater (WW). 90% of the particles had sizes under 0.5 mm after grinding the food waste in a commercial food waste disposer. COD, nitrogen and phosphorus concentrations were 100, 2 and 20 times higher in food waste than their average concentrations in WW, but the relative flow contribution of both streams made COD the only pollutant that increased significantly when both substrates were mixed. As sulphate concentration in food waste was in the same range as WW, co-digestion of both substrates would increase the COD/SO4-S rat…
Performance and convergence in municipal waste treatment in the European Union.
2019
This paper assesses performance and convergence in the treatment of municipal waste by the members of the European Union-27 (EU-27) during the period 1995-2016. First, a composite indicator of performance -including landfill, incineration, recycling, and composting and digestion as treatment operations- is computed with Data Envelopment Analysis and Multi-Criteria-Decision-Making techniques at country and year levels. Then, convergence is assessed using the techniques proposed by Phillips and Sul (2007, 2009) and, more recently, by Kong et al. (2017). The best performers are Central and Northern European countries such as Denmark, Austria and Germany, whereas the worst are some Eastern Euro…
Biogas from municipal solid waste landfills: A simplified mathematical model
2018
AbstractMunicipal solid waste (MSW) landfills now represent one of the most important issues related to the waste management cycle. Knowledge of biogas production is a key aspect for the proper exploitation of this energy source, even in the post-closure period. In the present study, a simple mathematical model was proposed for the simulation of biogas production. The model is based on first-order biodegradation kinetics and also takes into account the temperature variation in time and depth as well as landfill settlement. The model was applied to an operating landfill located in Sicily, in Italy, and the first results obtained are promising. Indeed, the results showed a good fit between me…