190 research outputs found
Metodo per il trattamento dei succhi greggi alimentari di origine vegetale, quali succo di pomodoro o simili
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Altri significati della platea e dei palazzi pubblici di Gubbio
No full textIl saggio fornisce un'ampia introduzione al volume di Spartaco Capannelli e Gaetano Rossi sul principale complesso architettonico della città di Gubbio, rintracciando i motivi del profondo interesse dell'autore del saggio per la città umbra.The essay provides an extensive introduction to the volume of Spartaco Capannelli and Gaetano Rossi on the principal architectural complex of Gubbio, tracing the reasons for the profound interest of the author of this essay to the Umbrian town
Effect of Different Pretreatments on Sludge Solubilization and Estimation of Bioenergy Potential
No full textMost of the conventional treatments of waste-activated sludge (WAS) are devoted to their minimization and destruction. On the other hand, the biomass contained in WAS can be utilized as a valuable source of renewable carbon. In this study, the influence of different pretreatments (ultrasonication, chemical, thermal, and combined pretreatments) was explored for sludge solubilization. Effects of the pretreatments were investigated as a function of the solubilization of total solids (TS), volatile solids (VS), and chemical oxygen demand (COD). Concentrations of soluble carbohydrates and total nitrogen were also measured. The most effective pretreatment to hydrolyze sludge was found to be the combined alkali–thermal (pH 12, 75 °C) pretreatment method, leading to TS and vs. solubilization of 9.6% and 17.2%, respectively. Soluble COD, carbohydrates, total nitrogen, and proteins estimated in the liquid phase were 5235 mg/L, 732 mg/L, 430 mg/L, and 2688 mg/L, respectively. Thus, the alkali–thermal method could be used for efficient valorization of WAS. Moreover, the solid fraction from all pretreated samples was further subjected to thermogravimetric analysis to estimate its potential for bioenergy from its higher heating value (HHV), which was found to be in the range of 10–11.82 MJ/kg. This study can provide better insight into the efficient valorization of liquid and solid phases of sludge after pretreatment
Metodo per la preparazione di membrane selettive a base di polivinilidene fluoruro solfonato per uso nell'ultrafiltrazione, nell'osmosi inversa e simili
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Membrane e processi di separazione con membrane: problematiche ed esempi di applicazione nell'industria delle bevande
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