Biodiesel purification using biomass-based adsorbent manufactured from delignified olive cake residues

Arwa Sandouqa, Mohammad Al-Shannag and Zayed Al-Hamamre

Renewable Energy, 2020, vol. 151, issue C, 103-117

Abstract: In this work, olive cake was treated by applying the alkali hydrolysis process in order to produce an adsorbent material for biodiesel purification. The treatment was performed with an aqueous solution of 7.5 wt% NaOH in a solid-to-liquid mass ratio of 1:6 at 90 °C followed by filtration, washing, drying, and sieving. The structure and composition of the delignified residue were investigated by XRD, FT-IR, BET, and SEM analysis to better understand its properties as an adsorbent. The study revealed that using an adsorbent of size <90-μm, 2 wt% adsorbent to biodiesel ratio and contact time of 40 min resulted in higher yield and better fuel properties compared to those purified using water washing method. At the same time, such enhanced properties fulfilled the ASTM 6751 and EN 14214 biodiesel standards. Therefore, the alkali residue can act as a replacement for commercial adsorbents for biodiesel purification. Further, the adsorption isotherm of this alkali residue was adequately described by the Freundlich model.

Keywords: Biodiesel; Adsorbent; Olive cake; Adsorption isotherms (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148119316842
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:151:y:2020:i:c:p:103-117

DOI: 10.1016/j.renene.2019.11.009

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().