1,721,287 research outputs found
Compost, Letami, Digestati, Biochar ed Hydrochar
Get PDFUn terzo del suolo mondiale è a rischio,
questa risorsa limitata
va tutelata e salvaguardata;
le parole d’ordine della sfida 2030
sono bioeconomia ed economia circolar
Buoni risultati "fertilizzanti" dal digestato essiccato
No full textIl digestato essiccato proveniente da un biodigestore alimentato con effluenti bovini e silomais ha dato risultati vegeto-produttivi analoghi a quelli di un concime minerale specifico per l’orticoltura su pomodoro da industria, mentre su bieta seminata i risultati non sono stati buoni a causa del contatto diretto (da evitare) con le radic
Modelling and Performance Analysis of an Integrated Plasma Gasification Combined Cycle (IPGCC) Power Plant
No full textThe waste management is become a very crucial issue in many countries, due to the ever-increasing amount of waste material, both domiciliary and industrial, generated. The main strategies for the waste management are the increase of material recovery (MR) which can reduce the landfill disposal, the improvement of energy recovery (ER) from waste and the minimization of the environmental impact.
Recent studies have focused on an innovative technology, the plasma gasification, that has been dem- onstrated as one of the most effective and environmentally friendly methods for solid waste treatment and energy utilization.
In this paper, a plasma gasification process based on plasma torch technology has been investigated by developing a thermochemical model (EPJ, EquiPlasmaJet) able to estimate both the syngas composition and the energy required for the gasification reactions. The EPJ model has been employed to predict the syngas composition and the energy balance of a RDF (refuse derived fuel) plasma arc gasification reactor using air as plasma gas, and, in order to define the optimal operating conditions three different configu- rations have been investigated.
Results show that, in the better plant solution, the plasma gasification efficiency is 69.1% (LHV) and the lower heating value of the syngas generated is about 9 MJ/kg. Furthermore in order to evaluate the suit- ability of this technology for energy recovery from solid wastes, the integration of the optimum plasma gasification system (PGS) with a gas turbine combined cycle (GTCC) has been analysed and the perfor- mance of the resulting integrated plasma gasification combined cycle (IPGCC) has been evaluated. The system efficiency (31% LHV) is very high in comparison with the efficiency of conventional technologies based on waste incineration (20%)
Is immunotherapy with fungal vaccines effective?
No full textPurpose of review Although allergen immunotherapy (AIT) for fungi has been performed for many years, evidence clearly demonstrating its clinical benefit are still lacking. Here, we reviewed the available studies assessing efficacy and safety of AIT for molds. Recent findings Studies on AIT for fungi were performed only for the two predominating mold species in the external environment, namely Cladosporium and Alternaria. There is no evidence for other mold species. Recent finding in the literature are lacking; the 2 most recent studies on AIT for molds were published in 2011. Overall, 13 studies were identified (the first was published in 1986), but only nine of these compared AIT to placebo. The studies are small (median study sample size, 27 patients) and of low quality, owing to several defects leading to moderate-to-high risk of bias. Symptoms improvement and medication use reduction, which are the main outcome measures of the studies, were inconsistently demonstrated. There are some concerns about safety with Cladosporium extracts, whereas vaccines with Alternaria extracts seem to be safe and well tolerated. Summary Low strength evidence suggests that mold AIT is efficacious for the treatment of respiratory allergies. High-quality studies with an adequate sample size are needed
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