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AssigneeUniversidad Autonoma De Puebla
InventorsMaria de la Paz Elizalde Gonzalez, Martin Marino Davila Jimenez, Omar Ornelas Davila
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A procedure of obtaining adsorbent from a waste material and its use are disclosed. This invention provides a natural waste material, specifically avocado seed, its preparation and use for the filling of columns used in the elimination of contaminants present in wastewater. The particles have an irregular shape and variable size for filling columns of different diameter and length. The adsorbent has sufficient hardness for avoiding a particle collapse. The material does not rot, is re-generable and ecological. In the present invention the preparation of the adsorbent, its pre-activation, carbonization and application to eliminate the color of textile wastewater is disclosed. The color elimination from textile wastewater, as well as decrease of salts, total suspended solids, chemical oxygen demand (COD) and total organic carbon (TOC), is carried out passing the textile wastewater through a column filled with the prepared adsorbent. In batch systems metals dissolved in water can be eliminated.
A metal, organic, inorganic, ionic, polymeric compound, salt and surfactant adsorption method from wastewater using a pre-activated adsorbent based on ground raw avocado seed particles or cut raw avocado seed particles obtained by the addition of NaOH solution to the seed particles to form a primary mixture and the addition of hydrogen chloride solution to form a secondary mixture, wherein the adsorption method comprises the steps of:
Dependencies are inferred from the claim text.