VOCCIANTE M.

Featured Application: The proposed procedure allows for the simple, efficient, and sustainable production of magnetic nanoparticles, which can be readily used in one-pot purification processes. The use of nanoparticles (NPs) in industrial applications is consistently increasing given their peculiar properties compared to bulk precursor...

In this paper, a general strategy is presented for optimizing water resources in industrial activities taking into account fluctuations of water flow-streams and water contents in feed and products as well as in the utility system. Indeed, considering fluctuations can be of primary importance for several water intensive industries such as the...

In recent years, the development of suitable technologies for the remediation of environmental contaminations has attracted much attention. Among these, electrochemical approaches have gained a prominent place thanks to the many possible applications and their proven effectiveness. This is particularly evident in the case of inorganic/ionic...

Leaks from landfills to underlying soil layers are one of the main problems that endanger the sustainability of waste disposal in landfills. Indeed, the possible failing of in-situ equipment can give rise to serious pollution consequences or costly inspection work in the landfill body. In this paper, we develop the time dependent mathematical...

The growing demand of nanomaterials is pushing towards the development of alternative strategies for the safe and sustainable production of nanoparticles. At the same time, to ensure high performances, a fine control over the product specifications is required. We focused on a bottom-up method combined with a mechanical disaggregation technique...

Alow-energy, magnetically-driven milling technique for the synthesis of silver nanoparticles is proposed, where the grinding medium and the metal precursor consisting of silver spheres have the same shape and size, belonging to a millimetric scale. The process is carried out at room temperature in aqueous solvent, where different types of...

Nanoparticles of zerovalent Gallium have been produced by surface disaggregation carried out by means of mechanical abrasion in aqueous phase where capping agents have been dissolved. The particles have been characterized in diameter by dynamic light scattering. At a constant grinding force acting on metal surface, it has been observed that the...

Pillow-plate heat exchangers (PPHEs) represent an innovative and promising alternative to conventional equipment. The waviness of the pillow-plates promotes lateral mixing and turbulence, which results in a good thermo-hydraulic performance, offering a significant energy-saving potential. Since PPHE also offer several important structural and...

Many agricultural areas are contaminated by heavy metals to such a level that the growth of plants is drastically reduced. Based on the site's specific characteristics, feasibility studies were carried out to choose the most effective technologies. Feasibility tests showed that soil washing and phytoremediation technologies could be used at the...

The tanning industry is one of the oldest industries in the world and is known for the production of a wide variety of toxic waste (aqueous and solid) containing chromium salts and other heavy metals. Solid waste is produced during the conversion of putrescible collagen fibres into finished non-putrescible leather products. In this process, the...

The composition of spent hydrochloric acid-based pickling liquors, deriving from the galvanizing industry, greatly depends on how long the bath has been used for pickling. We considered solutions containing 40–50 g L−1 of iron and zinc (as FeCl2 and ZnCl2) and 130–220 g L−1 of chloride, and used tri-butyl phosphate (TBP) and di-(2-ethylhexyl)...

The ElectroKinetic Remediation Technology (EKRT), when applied to an earthy matrix, is generally targeted to the extraction of one or more pollutants, often inorganic and typically belonging to the category of heavy metals. The technique exploits the effects caused by the application of an electric field for allowing the mobilization of the...

The European Union has set ambitious targets for deployment of renewable energy sources to reach goals of climate change mitigation and energy security policies. However, the current state of electricity transmission infrastructure is a major bottleneck for further scaling up of renewable energy in the EU. Several thousands of kilometers of new...

The possible optimization of metal recovery from Printed Circuit Boards (PCBs)and Central Processing Units (CPUs)has been investigated. Usual practice is to recover primarily the metals with the highest market price. In contrast, the present work shows how strategic considerations of the value share (%)of metals content and data regarding the...

An experimental study of hydrogen sulfide adsorption on a fixed bed for biogas purification is proposed. The adsorbent investigated was powdered hematite, synthesized by a wet-chemical precipitation method and further activated with copper (II) oxide, used both as produced and after pelletization with polyvinyl alcohol as a binder. The...

A method for the synthesis of Sn nanoparticles (NPs) is presented, whose technique is based on a reagentless comminution process, where bulky Sn metal undergoes a surface abrasion with release of zerovalent metal NPs produced by metal-ceramic balls collisions in a liquid medium embedding and dispersing the as-formed NPs. Two different...

A synthesis of carbon nanoparticles from hydrothermal dissociation of sugars of different composition is proposed in the present experimental study. The process has been carried out in a stirred batch reactor at a fixed temperature, using precursors dissolved in aqueous solvent in the presence of NaOH. The use of surface passivation agents has...

A process concerning bismuth nanoparticle synthesis by an eco-fiendly reductant in mixed solvents is proposed. The method relies upon a redox reaction carried out at mild operative conditions using tin salts as electron donors. The reaction is performed in the presence of polyvinyl-pyrrolidone (PVP) and sodium dodecyl-sulphate (SDS) as capping...

Pillow-plate heat exchangers (PPHE) are fabricated as stacks of pillow plates with alternating inner and outer channels. In this contribution, we show results of a numerical investigation of the turbulent single-phase flow (3000≤ Re≤ 8000) in the outer channels performed with the aid of the OpenFOAM® simulation software. Several turbulence...

In recent years, the development of suitable technologies for the remediation of environmental contaminations has attracted considerable attention. Among these, electrochemical approaches have gained prominence thanks to the many possible applications and their proven effectiveness. This is particularly evident in the case of inorganic/ionic...

In this work, we present 2D numerical simulations on the migration of a particle suspended in a viscoelastic fluid under Poiseuille flow at finite Reynolds numbers, in order to clarify the simultaneous effects of viscoelasticity and inertia on the lateral particle motion.The governing equations are solved through the finite element method by...

Due to limited economic resources, which impede access to specific advanced technologies, many developing countries are still facing the challenge of reducing human exposure to heavy metals, which is primarily associated with the consumption of water contaminated through the discharge of poorly treated wastewater. In wastewater treatment...

A green and sustainable process is proposed for the synthesis of metal nanoparticles (NPs) by means of a solid disaggregation in a liquid phase. A solid metal substrate, embedded in a solution containing suitable capping agents and surfactants, undergoes comminution carried out by a rotating shaft of hardness greater than the one typical of the...