Ricerc@Sapienza

In this study, a novel trigeneration system is conceived to produce heat and electricity and to provide cooling for the health treatments and touristic facilities of a spa, based on the natural hot water and solar sources. The power generation components, individually considered, are commercially available ones, but their novel combination and the complex power flow management represented a challenge. The proposed system is composed of a low‐temperature driven adsorption chiller, thermally activated by a low enthalpy geothermal source, and by hybrid photovoltaic/thermal panels.

Chitosan is very effective in removing metal ions through their adsorption. A preliminary investigation of the adsorption of chromium(III) by chitosan was carried out by means of batch tests as a function of contact time, pH, ion competition, and initial chromium(III) concentration. The rate of adsorption was rather rapid (t1/2 < 18 min) and influenced by the presence of other metal ions. The obtained data were tested using the Langmuir and Freundlich isotherm models and, based on R2 values, the former appeared better applicable than the latter.

Manganese ferrite nanoparticles were prepared by microwave-sonication assisted hydrothermal route and produced from wastes of Li-ion batteries and pyrite ash. The leaching solution of waste pyrite ash was used as the Fe source while the Mn-bearing solution recovered from the Li-ion battery recycling process was used as the Mn source. X-ray diffractometry showed that manganese ferrite can be obtained as single crystalline phase. Scanning electron microscope images showed that double-pyramid or octahedral particles were formed with an average size of 24.3 nm.

The aim of the present experimental study was to perform a technical-economic evaluation of a combined treatment system, consisting of coagulation-flocculation or rapid sand filtration as pre-treatment followed by column adsorption, for reducing the arsenic concentration from approximately 1 mg/L to below the limit set for groundwater remediation and drinking water, i.e., 0.01 mg/L, according to the legislation in force. A wide number of operating conditions were experimentally evaluated in the different tests.

This paper reports the MEPS-HPLC-DAD method for the simultaneous determination of 12 azole drugs (bifonazole, butoconazole, clotrimazole, econazole, itraconazole, ketoconazole, miconazole, posaconazole, ravuconazole, terconazole, tioconazole and voriconazole) administered to treat different systemic and topical fungal infections, in biological samples. Azole drugs separation was performed in 36 min. The analytical method was validated in the ranges as follows: 0.02–5 ?g mL?1for ravuconazole; 0.2–5 ?g mL?1for terconazole; 0.05–5 ?g mL?1for the other compounds.

Soil contamination by mixture of compounds represents a challenging environmental problem to face,
especially for the risk connected to the human health, due to the possible diffusion of the pollution in
the groundwater. One of the most used remediation technology is adsorbtion on carbonaceus material
and Activated Carbon (AC) is the most used one, even if it is usually connected to high costs. Biochar (BC)
is proposed as an alternative low-cost material for the removal of wide range of contaminants in the

Mesoporous NiO films were deposited by means of a screen printing technique onto fluorine-doped tin oxide transparent electrodes and consequently sensitized with Erythrosin B (EryB) dye. The obtained colored NiO material was used as a working electrode in a three-electrode cell to study the evolution of the triple semiconductor/dye/electrolyte interface upon electrochemical polarization in dark conditions. The electrolyte was a solution of I3 -/I- in acetonitrile, with the redox couple representing the typical redox shuttle of dye-sensitized solar cells (DSCs).

The fluoride removal efficiency of the commercial product Actifluo (Brenntag) has been evaluated on both real industrial wastewater samples as well as on synthetic wastewaters. This study demonstrates that the treatment with the Aluminum polychloride (PAC) containing Actifluo, after a preliminary precipitation step with Ca(OH)2, improved the efficiency in the fluoride removal. This has been proved on wastewaters coming from four different companies of the south of Italy.

Cyclodestrins (CDs) are cyclic oligosaccharides well-known for their ability to form host-guest inclusion complexes with properly sized compounds. They have been used for decades as chiral selectors as well as drug delivery systems within the frameworks of separation science and pharmaceutical science. More recently, their use has been extended to the field of extractive science under the stimulus of additional advantageous characteristics, such as low-price, negligible environmental impact, non-toxicity, as arising from the fact that natural CDs are starch degradation products.