Effect of operating conditions of thermochemical liquefaction on biocrude production from Spirulina platensis

被引：379
作者：
Jena, Umakanta [1 ]
Das, K. C. [1 ]
Kastner, J. R. [1 ]
机构：
[1] Univ Georgia, Biorefining & Carbon Cycling Program, Dept Biol & Agr Engn, Athens, GA 30602 USA
来源：
BIORESOURCE TECHNOLOGY | 2011年 / 102卷 / 10期
基金：
美国能源部;
关键词：
Thermochemical liquefaction (TCL); Microalgae; Biocrude; Biofuel; MICROALGAE DUNALIELLA-TERTIOLECTA; HYDROTHERMAL LIQUEFACTION; MARINE MICROALGAE; BIO-OIL; BIOMASS; SPECTROSCOPY; TEMPERATURE; RECOVERY;
D O I：
10.1016/j.biortech.2011.02.057
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
This study investigated the optimum thermochemical liquefaction (TCL) operating conditions for producing biocrude from Spirulina platensis. TCL experiments were performed at various temperatures (200-380 degrees C), holding times (0-120 min), and solids concentrations (10-50%). TCL conversion at 350 degrees C, 60 min holding time and 20% solids concentration produced the highest biocrude yield of 39.9% representing 98.3% carbon conversion efficiency. Light fraction biocrude (B-1) appeared at 300 degrees C or higher temperatures and represented 50-63% of the total biocrude. Biocrude obtained at 350-380 degrees C had similar fuel properties to that of petroleum crude with energy density of 34.7-39.9 MJ kg(-1) compared to 42.9 MJ kg(-1) for petroleum crude. Biocrude from conversion at 300 degrees C or above had 71-77% elemental carbon, and 0.6-11.6% elemental oxygen and viscosities in the range 40-68 cP. GC/MS of biocrude reported higher hydrocarbons (C-16-C-17), phenolics, carboxylic acids, esters, aldehydes, amines, and amides. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：6221 / 6229
页数：9
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