Use of electrodialysis as a VFA recovery process from acidogenic of MSW synthetic leachates
Author: Bermeo Ovalle, Mónica Alejandra; Maturana Córdoba, Aymer Jefferson; Estevez Lizarazo, Sandra Liliana; Rodríguez Susa, Manuel Salvador; Giraldo Gómez, Eugenio
Content type: article
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Abstract:
An electrodialysis (ED) process was tested for volatile fatty acids (VFA) recovery from a simulated leachete of acidogenesis of municipal solid wastes (MSW). The effect of initial VFA concentratation in leachate, applied voltage and flow rate on VFA removal efficiency were evaluated. Four different leachate compositions were obtained at low VFA initial concentration, high voltages levels and hig flow rates. ED process was showed higher removal efficiency with shorts chain acids, but VFA recovery final concentration was directlly related with initial concentration of each acid. After VFA recovery tests of chemical reaction with ethanol were carried out for ethyl esters production as gas oil additives. Results of these tests showed a transforamtion efficiency of 26%