Biodiesel Dry Purification Using Unconventional Bioadsorbents

The dry washing method is an alternative to replace water washing, thereby reducing the negative impacts of contamination. However, commercial adsorbents come from industrial processes that, due their composition, may not be such a sustainable resource in global biodiesel production process. In this study, use organic residues, as sawdust, coconut fiber, nutshell, rice husk, and hyacinth were proposed bioadsorbents for purification waste cooking oil. Quality parameters acid number, content, free total glycerin content evaluated compared with those after (Magnesol Amberlite BD10DRY). Promising results obtained using sawdust process, achieving reduction number value 31.3% respect unpurified biodiesel. Indeed, was more efficient than BD10DRY (that increased number). addition, reduced by 54.8%, again BD10DRY. values similar between sawdust. Water better Magnesol (399, 417, 663 mg/kg respectively). These show that can used bioadsorbent biodiesel, generating less environmental impact.