Who we are Activated carbon Applications Services Contacts Quality and competence Get physically activated Chemically activated Activated carbon: quality and competence Photo 1. Granular activated carbon At first glance, all activated carbon looks the same. All derive from the same element, carbon, and all are used thanks to their absorption capacity, for the removal of unwanted substances from gases and liquids. In truth, for each application, there are activated carbons that perform a better action than others. The reason for this may be due to countless factors, but undoubtedly, the technical competence of the people involved in the optimization of a process plays a decisive role. For some time, our main objective has been to identify, among the different categories of carbons, the most suitable quality for each specific application, experimenting with powder or granular products, physically or chemically activated, verifying their effect on the final result. Me too' the experience we have accumulated, helping our customers to identify the best solutions, has been instrumental. We can say that we have indisputable capabilities to solve any adsorption problem. Maggiore capacità adsorbente, migliore qualità del prodotto Foto 2. Carbone attivo estruso in pellet I carboni attivi sono dei prodotti industriali chimicamente inerti, essenzialmente composti da carbonio, con una struttura porosa molto sviluppata. Essi presentano una superficie interna molto estesa la quale conferisce al prodotto un potere adsorbente molto elevato rispetto ad una numerosa varietà di sostanze. In generale il volume specifico dei pori è maggiore di 0,8 ml/g e la superficie specifica interna è superiore a 1000 m²/g. I pori hanno dimensioni variabili e si distinguono in tre grandi classi: Macropori: di diametro superiore a 500 Angstrom. Rappresentano la superficie generalmente inutilizzabile ed intervengono poco sui fenomeni di adsorbimento. Mesopori: detti anche pori di transizione, di diametro compreso tra 30 e 500 Angstroms. Costituiscono le vie di accesso principali ed hanno un ruolo determinante nella cinetica di adsorbimento. Micropori: di diametro compreso tra 5 e 30 Angstrom. Costitiscono la parte attiva, ossia l'essenziale della superficie specifica. Adsorption, a phenomenon by which the molecules of a fluid phase (liquid or gaseous) are fixed to the surface of a solid, is the consequence of a field of attractive forces. The forces that cause the fixation of molecules on the surface of the coal are relatively weak. They are of the "Van Der Waals bonds" type and create, after a certain time, a state of equilibrium which depends on the temperature and composition of the molecules in the fluid phase. The "adsorption isotherm" can therefore be defined as the curve which represents, at constant temperature, the quantity of substances adsorbed on the carbon as a function of the concentration of free molecules in the fluid in contact with the adsorbent material.