Abstract
A single-step process for a direct conversion of wet algal biomass containing about 80% of water into biodiesel under subcritical methanol conditions is developed and presented in this work. This process may have energetic advantages with high free fatty acid (FFA) and water contents as the feedstock. At elevated temperatures, water hydrolysis and FFA esterification can simultaneously occur in a subcritical state. The influences of process parameters including reaction temperature (150-225 °C), reaction time (15-120 min) and methanol to wet biomass (vol./wt.) ratio (3:1-8:1) were investigated. The optimal conditions for this process are reported as: methanol to wet biomass (vol./wt.) ratio of around 6:1, temperature and time of about 225 °C, and reaction time of 90 min. The fatty acid methyl esters (FAMEs) were analyzed with GC-MS, FT-IR and thermogravimetric (TGA). This process does not require a catalyst and any drying pre-treatment steps. Thus, the process is cost-saving and environmental friendly for renewable biodiesel production.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 253-259 |
| Number of pages | 7 |
| Journal | Fuel |
| Volume | 147 |
| DOIs | |
| State | Published - May 1 2015 |
| Externally published | Yes |
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Keywords
- Biodiesel
- Fatty acid methyl ester
- Nannochloropsis gaditana
- Subcritical methanol condition
- Wet algae
ASJC Scopus subject areas
- Fuel Technology
- Energy Engineering and Power Technology
- Chemical Engineering(all)
- Organic Chemistry
Cite this
Single-step conversion of wet Nannochloropsis gaditana to biodiesel under subcritical methanol conditions. / Sitthithanaboon, Weena; Reddy, Harvind K.; Muppaneni, Tapaswy; Ponnusamy, Sundaravadivelnathan; Punsuvon, Vittaya; Holguim, Francisco; Dungan, Barry; Deng, Shuguang.
In: Fuel, Vol. 147, 01.05.2015, p. 253-259.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Single-step conversion of wet Nannochloropsis gaditana to biodiesel under subcritical methanol conditions
AU - Sitthithanaboon, Weena
AU - Reddy, Harvind K.
AU - Muppaneni, Tapaswy
AU - Ponnusamy, Sundaravadivelnathan
AU - Punsuvon, Vittaya
AU - Holguim, Francisco
AU - Dungan, Barry
AU - Deng, Shuguang
PY - 2015/5/1
Y1 - 2015/5/1
N2 - A single-step process for a direct conversion of wet algal biomass containing about 80% of water into biodiesel under subcritical methanol conditions is developed and presented in this work. This process may have energetic advantages with high free fatty acid (FFA) and water contents as the feedstock. At elevated temperatures, water hydrolysis and FFA esterification can simultaneously occur in a subcritical state. The influences of process parameters including reaction temperature (150-225 °C), reaction time (15-120 min) and methanol to wet biomass (vol./wt.) ratio (3:1-8:1) were investigated. The optimal conditions for this process are reported as: methanol to wet biomass (vol./wt.) ratio of around 6:1, temperature and time of about 225 °C, and reaction time of 90 min. The fatty acid methyl esters (FAMEs) were analyzed with GC-MS, FT-IR and thermogravimetric (TGA). This process does not require a catalyst and any drying pre-treatment steps. Thus, the process is cost-saving and environmental friendly for renewable biodiesel production.
AB - A single-step process for a direct conversion of wet algal biomass containing about 80% of water into biodiesel under subcritical methanol conditions is developed and presented in this work. This process may have energetic advantages with high free fatty acid (FFA) and water contents as the feedstock. At elevated temperatures, water hydrolysis and FFA esterification can simultaneously occur in a subcritical state. The influences of process parameters including reaction temperature (150-225 °C), reaction time (15-120 min) and methanol to wet biomass (vol./wt.) ratio (3:1-8:1) were investigated. The optimal conditions for this process are reported as: methanol to wet biomass (vol./wt.) ratio of around 6:1, temperature and time of about 225 °C, and reaction time of 90 min. The fatty acid methyl esters (FAMEs) were analyzed with GC-MS, FT-IR and thermogravimetric (TGA). This process does not require a catalyst and any drying pre-treatment steps. Thus, the process is cost-saving and environmental friendly for renewable biodiesel production.
KW - Biodiesel
KW - Fatty acid methyl ester
KW - Nannochloropsis gaditana
KW - Subcritical methanol condition
KW - Wet algae
UR - http://www.scopus.com/inward/record.url?scp=84922572921&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84922572921&partnerID=8YFLogxK
U2 - 10.1016/j.fuel.2015.01.051
DO - 10.1016/j.fuel.2015.01.051
M3 - Article
AN - SCOPUS:84922572921
VL - 147
SP - 253
EP - 259
JO - Fuel
JF - Fuel
SN - 0016-2361
ER -