Method of fabricating green desiccant wheel

A method of fabricating a green desiccant wheel comprising steps of:

• (a) purification and extraction, wherein uncalcined aluminum dross is mixed with an aqueous alkaline sodium solution to obtain a sodium aluminate solution;
• elemental aluminum is extracted from the sodium aluminate solution;
• and an adsorbent material of aluminum hydroxide and alumina is obtained thereby;
• (b) preparing a slurry using said adsorbent material of aluminum hydroxide and alumina as a base material to form a ceramic slurry;
• (c) treatment of forming, wherein said ceramic slurry is added to a flammable porous carrier material having a 3-dimensional (3D) porous network skeleton;
• and
• (d) treatment of drying and sintering, wherein, in a sintering process, said carrier material is removed through high-temperature combustion to obtain a reusable recycled desiccant wheel;
• said desiccant wheel has a porous ceramic wheel body with interpenetrating pores;
• said desiccant wheel is of said 3D porous network skeleton with open cells and said pores have diameters bigger than 100 nanometers (nm);
• said pores are uniformly distributed on the surface of said porous ceramic wheel body to obtain said desiccant wheel of said composite adsorbent material with porous surface;
• and said porous ceramic wheel body of said desiccant wheel has a diameter of 1˜120 centimeters (cm), a pores density of 10˜60 pores per inch, a porosity of 60˜85%, a flexural strength greater than 20 kilogram-force per square centimeter and a thickness of 10˜100 cm.