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Materials 2017, 10(6), 682; doi:10.3390/ma10060682

Improving Sorbents for Glycerol Capture in Biodiesel Refinement

1
Center for Bio/Molecular Science and Engineering, Naval Research Laboratory, Washington, DC 20375, USA
2
Formerly, NOVA Research Incorporated, Alexandria, VA 22308, USA
*
Author to whom correspondence should be addressed.
Received: 14 April 2017 / Revised: 14 June 2017 / Accepted: 17 June 2017 / Published: 21 June 2017
(This article belongs to the Section Porous Materials)
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Abstract

Biodiesel is produced by transesterification of animal fat, vegetable oil, or waste cooking oil with alcohol. After production costs, the economic viability of biodiesel is dependent on what steps are necessary to remove impurities following synthesis and the effectiveness of quality control analysis. Solid-phase extraction offers a potentially advantageous approach in biodiesel processing applications. Nanoporous scaffolds were investigated for adsorption of glycerol, a side product of biodiesel synthesis that is detrimental to engine combustion when present. Materials were synthesized with varying pore wall composition, including ethane and diethylbenzene bridging groups, and sulfonated to promote hydrogen bonding interactions with glycerol. Materials bearing sulfonate groups throughout the scaffold walls as well as those post-synthetically grafted onto the surfaces show notably superior performance for uptake of glycerol. The sorbents are effective when used in biodiesel mixtures, removing greater than 90% of glycerol from a biodiesel preparation. View Full-Text
Keywords: biodiesel; solid phase extraction; organosilicate; sorbent biodiesel; solid phase extraction; organosilicate; sorbent
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Johnson, B.J.; Melde, B.J.; Moore, M.H.; Malanoski, A.P.; Taft, J.R. Improving Sorbents for Glycerol Capture in Biodiesel Refinement. Materials 2017, 10, 682.

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