Journal
BIORESOURCE TECHNOLOGY
Volume 101, Issue 19, Pages 7658-7660Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.04.043
Keywords
Hydrotreating; Waste cooking oil; Biodiesel; GC x GC; Isomerization
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This study focuses on the use of waste cooking oil (WCO) as the main feedstock for hydrotreatment to evaluate the effect of temperature on the product hydrocarbon composition. A qualitative analysis was initially performed using a GC x GC-TOFMS indicating the presence of mainly paraffins of the C15-C18 range. A quantitative analysis was also performed via a GC-FID, which gave both n-paraffins and iso-paraffins in the range of C8-C29. The results indicate that hydrotreating temperature favors isomerization reactions as the amount of n-paraffins decreases while the amount of iso-paraffins increases. For all experiments the same commercial hydrotreating catalyst was utilized, while the remaining operating parameters were constant (pressure = 1200 psig, LHSV = 1.0 h(-1), H-2/oil ratio = 4000 scfb, liquid feed = 0.33 ml/min, and gas feed = 0.4 scfh). (C) 2010 Elsevier Ltd. All rights reserved.
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