102,050 research outputs found
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
Economic integration in East Asia and Europe: lessons from a comparative analysis
No full textThis paper compares the economic integration processes of the European Union and the East Asian nations and comments on the possible reciprocal lessons, if any, that can be drawn to smooth the future paths of the two groups. The most relevant lessons on the EU side rely on strong institutionalization, structural policies, and the monetary union. Lessons from East Asia can be found in regional production networks, trade patterns, and the recent developments in financial cooperation. Both entities are presently facing difficult challenges to progress and growth
Ozone treatment of textile wastewaters for reuse
No full textTreatment of textile wastewaters by means of an ozonation pilot plant are described. Wastewaters used were produced by a dyeing and finishing factory and were first treated in an active sludge plant and filtrated through sand. In the appropriate conditions very high colour removal (95-99%) was achieved and the effluent could be reused in production processes requiring water of high quality as dyeing yarns or light colorations. Even if the chemical oxygen demand of treated waters was still in a range (75-120 mg/l, a decrease of up to 60%) that was usually considered to be too high for recycling purposes, recycling experiments were successful. The economical viability of the techniques implementation was also demonstrated and the industrial plant is currently under realisation under an EU financed project.
The paper considers also the possible improvement of ozone diffusion by means of membrane contactors realised in a second pilot plant, in order to further reduce operating costs of the technique. With respect to traditional systems, the gas/liquid contact surface is much higher being that of the membrane. Ozone at the interface is therefore immediately solubilized and potentially consumed with no additional resistance to the mass transfer.</jats:p
Pt/g-Al2O3 catalytic membranes vs. Pt on g-Al2O3 powders in the selective hydrogenation of p-chloronitrobenzene
No full textEffect of varying hydrothermal temperature, time, and sludge pH on sludge solubilisation
No full textIn recent years, hydrothermal treatment has been considered as among the most promising option for sludge solubilisation and carbon recovery in terms of sludge management. In this study, the effect of different individual hydrothermal operating conditions like temperature (110–250 °C), sludge pH (6–13) and reaction time (0.5–3 h) were varied to understand their influence on sludge solubilisation. The most effective hydrothermal conditions (severity factor of 9.7) were found to be at 200 °C, sludge pH of 12 and reaction time of 1 h which solubilised about 1743 mg/g and 131 mg/g of COD and carbohydrates respectively into the aqueous phase. Also, gas chromatography- mass spectrometry (GC–MS) analysis was done that identified the organic compounds in the treated liquid phase to be mainly carboxylic acids, phenols, esters, and their derivatives. Although further studies are required to efficiently separate and recover the different organic compounds present, this work provides more insights for future valorisation of the organic rich hydrothermally treated liquid phase
Catalytic membrane reactors for the oxidehydrogenation of propane: experimental and modelling study
No full text
Pt/g-Al2O3 Catalytic Membranes vs. Pt on /g-Al2O3 Powders in the Selective Hydrogenation of p-Chloronitrobenzene.
No full text- …
