Rice husk ash as an adsorbent for purifying biodiesel from waste frying oil |
| |
Authors: | Márcia Cardoso Manique Candice Schmitt Faccini Bruna Onorevoli Edilson Valmir Benvenutti Elina Bastos Caramão |
| |
Affiliation: | 1. Programa de Pós-Graduação em Ciência dos Materiais (PGCIMAT), Instituto de Química, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil;2. Programa de Pós-Graduação em Química (PPGQ), Instituto de Química, Universidade Federal do Rio Grande do Sul, CEP: 91510-070 Porto Alegre, RS, Brazil |
| |
Abstract: | The goal of this work is to study the purification of biodiesel from waste frying oil (WFO) using rice husk ash (RHA) at concentrations of 1%, 2%, 3%, 4% and 5% (w/w) and compare it with two other different purification methods, the traditional acid solution (1% aqueous H3PO4) and with the commercial adsorbent Magnesol® 1% (w/w). The structure and composition of the RHA were studied to better understand its properties as an adsorbent. In a concentration of 4%, the RHA showed excellent results for removal impurities from biodiesel. The high concentration of silica in its composition and the presence of meso and macropores can explain its high capacity of adsorption. Thus, the RHA, that is a byproduct of the rice processing, can appear as an alternative material for biodiesel purification. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|