PREPARATION OF ACTIVATED CARBON FROM GRAPE SEEDS BY CHEMICAL ACTIVATION AND APPLICATION TO THE ADSORPTION OF HERBICIDES IN WATER

摘要

Carbonaceous materials, especially activated carbons, are of great importance as adsorbents and catalytic supports, mainly because there is great flexibility for the adjustment of their porous structure and surface chemistry for each specific application. The properties and behaviour of an activated carbon are closely linked to the starting material and the method of activation. The starting materials used for the preparation of activated carbons are diverse, having lignocellulosic materials a great weight in both industry and academy. The literature shows special interest in the preparation of granular activated carbons, which has led to the study of different starting materials of various kinds, with frequent use of seeds and waste biomass. The use of grape seeds for the preparation of activated carbons shows relatively few references for both physical and chemical activation. This work deals with the preparation of granular activated carbon by activation of grape seeds with phosphoric acid and the evaluation of their potential for the adsorption of diuron in water.