Search results for "Refus"
showing 10 items of 125 documents
Thermal decomposition study of major refuse derived fuel components
2018
Abstract Refuse Derived Fuel (RDF) composed on biomass, paper, textiles, wood, synthetic polymers and other combustible materials is an alternative energy resource to implement Waste-to-Energy strategy. The aim of this study is to investigate the thermal decomposition characteristics of materials forming RDF by thermogravimetric analysis. Thermogravimetric (TG) analysis of RDF components demonstrates major differences in processes behind the thermal decomposition processes of waste components. Biomass decomposition can be divided into two distinct stages for wood, cotton, cotton wool and other biomass samples whereas three distinct stages can be distinguished for cardboard and paper samples…
Managing Municipal Solid Waste: Energetic and Environmetal Comparison among different options
2001
Goal. This research aims to assess the environmental effects of integrated strategies in a municipal waste management system. In particular, analysis is focused on a waste stream in Palermo, where landfill involves the prompt disposal of the most waste after collection. The current local management system is compared with two integrated waste management alternatives. Both the options comply with Italian regulations, but each one predicts adopting the available technologies in different ways. Methods and objectives. Energetic and environmental balances are carried out in each management system referring to local waste composition in order to quantify energy consumption, the recovery of mater…
Eco-efficiency assessment of municipal solid waste services: Influence of exogenous variables.
2020
Abstract Improving the eco-efficiency of municipalities in the provision of municipal solid waste (MSW) services is fundamental in the context of a circular economy. This study evaluates the eco-efficiency of a sample of Spanish municipalities, integrating the total cost as input, recyclable waste as desirable output, and unsorted waste as undesirable output. Following a pioneering approach, the weighted Russell directional distance model (a non-radial data envelopment analysis model) was employed, which allowed us to obtain a global inefficiency score and individual inefficiency scores for each variable integrated in the model. In the second stage of analysis, the potential factors affecti…
Biochar from Waste Derived Fuels as Low-Cost Adsorbent for Waste Hydrocarbons
2020
Abstract The aim of this study is to prove technical feasibility of combined refuse derived fuel (RDF) torrefaction and oily wastewater treatment approach by using RDF derived biochar as a sorption media. Biochars prepared from refuse derived fuels in torrefaction, carbonization and pyrolysis modes were analysed as fuels and as hydrocarbon sorbents. Changes of elemental composition and properties of material during thermal treatment and subsequent washing process have been analysed. Experimental evaluation of sorption behaviour of toluene and diesel fuel on obtained biochar performed. Our results show that torrefaction/carbonization of RDF coupled with the subsequent washing of biochar is a…
Occurrence and removal of organic pollutants in sewages and landfill leachates
2002
Sewages of different composition and the effluents of four sewage treatment plants (STPs), plus sewage sludges were analysed for semivolatile organic priority pollutants. Furthermore, 11 landfill leachates were analysed to evaluate their contribution to sewage pollutants when co-treated. Bis(2-ethylhexyl) phthalate (DEHP) was the pollutant occurring at highest concentrations (up to 122 microg/l) and it was present in all sewages and leachates; concentrations of other phthalates were usually below 17 microg/l. Some polycyclic aromatic hydrocarbons (PAH) (<1 microg/l) and 2,6-dinitrotoluene (< or =5.9 microg/l) were also present in many of the sewages and leachates. Phthalates were present in…
Moralna odpowiedzialność rodziców za szczepienie dzieci - czynniki modyfikujące w realiach polskich
2020
Kontekst badań: Szczepienia ochronne dzieci są dobrodziejstwem dla zdrowia indywidualnych osób i epidemicznej ochrony społeczeństwa. Obserwowane narastające lawinowo zjawisko uchylania się przez rodziców od szczepień dzieci wymaga pogłębionych badań pod kątem ich odpowiedzialności moralnej za zaniechanie działania. Cel badań: zweryfikowanie hipotezy badawcze, która brzmiała: Odpowiednio silny wpływ czynnika modyfikującego postawy rodziców wobec szczepień ochronnych dzieci może zmniejszyć odpowiedzialność moralną rodziców za niepodjęcie obowiązku szczepiennego. Metoda badawcza: w badaniach zastosowano desk research, a więc analizę danych zastanych, z uwzględnieniem dostępnych dokumentów, bad…
Reuse of Food Waste and Wastewater as a Source of Polyphenolic Compounds to Use as Food Additives
2020
Abstract The problem of waste and byproducts generated from agro-industrial activities worldwide is an increasing concern in terms of environmental sustainability. In this ambit, the quantity of food wastes—produced in all steps of the whole food chain—is enormous, and it may be forecasted that food waste could amount to more than 120 billion tonnes by 2020. The reuse of food waste and wastewater as source of polyphenolic compounds could be an interesting discussion in this ambit. In fact, polyphenols obtained in this way might be used for food and non-food purposes by means of new, improved, and safe extraction methods. In light of the opportunity represented by the treatment of agro-indus…
Negative responses to strategic innovation, a case study of record labels facing streaming
2021
Record labels are organizations in charge of phonographic production at the interface between musicians and the audience. Since the arrival of digital technologies such as the mp3 and the Internet, record labels have had to adapt to several changes: wider distribution channels, dematerialized competitors, customers’ demands for free music, more ephemeral cooperation. Specifically, streaming platforms like Spotify brought a major change known as a strategic innovation. A strategic innovation is a strong change that overturns all previously established values in the sector (renewal of values attached to the product, values attached to the customer relationship and power relations). However, f…
Alcohol use disorders in Europe: A comparison of general population and primary health care prevalence rates
2016
Aims Alcohol use disorders (AUDs) are prevalent in Europe but occurrence in primary care and the proportion of treated cases are understudied. This study reports prevalence of AUDs and their treatment in European primary health care settings and compares them with general population estimates. Procedure We sampled 358 general practitioners (GPs, refusal rate: 56.4%) across six European countries (Germany, Hungary, Italy, Latvia, Poland, and Spain), who assessed 13,003 patients including providing AUD diagnoses. A subsample of 8,476 patients (refusal rate: 17.8%) was interviewed subsequently, assessing DSM-IV AUD diagnoses via the Composite International Diagnostic Interview. Final AUD diagn…
La competencia pragmática en adolescentes. Un estudio de la atenuación en actos de rechazo
2019
En el presente trabajo se ha llevado a cabo un estudio de la atenuación pragmática a partir del análisis de un corpus de muestras escritas que recogen una actividad de simulación o role-playpropuesta a estudiantes adolescentes (15-18 años): la escritura de un WhatsApp en la que se rechaza una invitación. El objetivo de este estudio es, por una parte, observar el uso que hacen los adolescentes de la estrategia pragmática de la atenuación, y, por otra, evaluar su competencia pragmática, a partir del diseño de un sistema de evaluación basado en el mayor o menor uso de la atenuación. La metodología seguida para el análisis de la atenuación se basa en la propuesta de Albelda et al. (2014), en la…