The production process of polyurethane using biopoliol obtained by chemical modification of vegetable oil and bioespuma adsorbent obtained by the same

摘要

The production process of polyurethane using biopoliol obtained by chemical modification of vegetable oil and bioespuma adsorbent obtained by the same. The present application of provilu00e9gio invention presents the development of polymers of polyurethane, rigid, obtained from polyols derived from the oil of mabea fistulifera Mart.The chemical modification of oil occurred via a hydroxylation reaction in situ using acetic acid, hydrogen peroxide and sulfuric acid, the polymer Pu - 3 synthesized was used in the tests adsortivos, because it has potential for the removal of colorant. S in aqueous solution.Studies of adsorption of dye direct red 80 (dr80) and reactive blue 21 (rb21) by polu00edmeiro Pu - 3 included; studies of equilibrium, kinetics and thermodynamic. The Langmuir and Freundlich models were used to characterize the system adsorbent / dyes. The maximum capacity determined using Langmuir is mg.g 10,37 ^ - 1 ^ to dr80 and 13,54 mg.G ^ - 1 ^ to the rb21 under conditions of pH adjusted to 2.0 and the 25 198 C. the process of adosru00e7u00e3o follows the pseudo second order kinetics for both dyes. The thermodynamic parameters showed that the adsorption process is spontaneous and endothermic (positive 30 H 198 ) and positive (negative 30 G 198 ).The adsorption process developed was applied to a real sample of industrial effluent containing rb21 and dr80 and percentage of removal of 94.5% for the rb21 and 100% for the dr80 were found after the treatment.