Abstract
This study demonstrated a one-step process for direct liquefaction and conversion of wet algal biomass containing about 90% of water to biodiesel under supercritical methanol conditions. This one-step process enables simultaneous extraction and transesterification of wet algal biomass. The process conditions are milder than those required for pyrolysis and prevent the formation of by-products. In the proposed process, fatty acid methyl esters (FAMEs) can be produced from polar phospholipids, free fatty acids, and triglycerides. A response surface methodology (RSM) was used to analyze the influence of the three process variables, namely, the wet algae to methanol (wt./vol.) ratio, the reaction temperature, and the reaction time, on the FAMEs conversion. Algal biodiesel samples were analyzed by ATR-FTIR and GC-MS. Based on the experimental analysis and RSM study, optimal conditions for this process are reported as: wet algae to methanol (wt./vol.) ratio of around 1:9, reaction temperature and time of about 255°C, and 25. min respectively. This single-step process can potentially be an energy efficient and economical route for algal biodiesel production.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 118-122 |
| Number of pages | 5 |
| Journal | Bioresource Technology |
| Volume | 102 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2011 |
| Externally published | Yes |
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Keywords
- Biodiesel
- Response surface methodology
- Supercritical methanol
- Wet algae
ASJC Scopus subject areas
- Bioengineering
- Environmental Engineering
- Waste Management and Disposal
Cite this
Optimization of direct conversion of wet algae to biodiesel under supercritical methanol conditions. / Patil, Prafulla D.; Gude, Veera Gnaneswar; Mannarswamy, Aravind; Deng, Shuguang; Cooke, Peter; Munson-McGee, Stuart; Rhodes, Isaac; Lammers, Peter; Nirmalakhandan, Nagamany.
In: Bioresource Technology, Vol. 102, No. 1, 01.2011, p. 118-122.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Optimization of direct conversion of wet algae to biodiesel under supercritical methanol conditions
AU - Patil, Prafulla D.
AU - Gude, Veera Gnaneswar
AU - Mannarswamy, Aravind
AU - Deng, Shuguang
AU - Cooke, Peter
AU - Munson-McGee, Stuart
AU - Rhodes, Isaac
AU - Lammers, Peter
AU - Nirmalakhandan, Nagamany
PY - 2011/1
Y1 - 2011/1
N2 - This study demonstrated a one-step process for direct liquefaction and conversion of wet algal biomass containing about 90% of water to biodiesel under supercritical methanol conditions. This one-step process enables simultaneous extraction and transesterification of wet algal biomass. The process conditions are milder than those required for pyrolysis and prevent the formation of by-products. In the proposed process, fatty acid methyl esters (FAMEs) can be produced from polar phospholipids, free fatty acids, and triglycerides. A response surface methodology (RSM) was used to analyze the influence of the three process variables, namely, the wet algae to methanol (wt./vol.) ratio, the reaction temperature, and the reaction time, on the FAMEs conversion. Algal biodiesel samples were analyzed by ATR-FTIR and GC-MS. Based on the experimental analysis and RSM study, optimal conditions for this process are reported as: wet algae to methanol (wt./vol.) ratio of around 1:9, reaction temperature and time of about 255°C, and 25. min respectively. This single-step process can potentially be an energy efficient and economical route for algal biodiesel production.
AB - This study demonstrated a one-step process for direct liquefaction and conversion of wet algal biomass containing about 90% of water to biodiesel under supercritical methanol conditions. This one-step process enables simultaneous extraction and transesterification of wet algal biomass. The process conditions are milder than those required for pyrolysis and prevent the formation of by-products. In the proposed process, fatty acid methyl esters (FAMEs) can be produced from polar phospholipids, free fatty acids, and triglycerides. A response surface methodology (RSM) was used to analyze the influence of the three process variables, namely, the wet algae to methanol (wt./vol.) ratio, the reaction temperature, and the reaction time, on the FAMEs conversion. Algal biodiesel samples were analyzed by ATR-FTIR and GC-MS. Based on the experimental analysis and RSM study, optimal conditions for this process are reported as: wet algae to methanol (wt./vol.) ratio of around 1:9, reaction temperature and time of about 255°C, and 25. min respectively. This single-step process can potentially be an energy efficient and economical route for algal biodiesel production.
KW - Biodiesel
KW - Response surface methodology
KW - Supercritical methanol
KW - Wet algae
UR - http://www.scopus.com/inward/record.url?scp=77957339238&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77957339238&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2010.06.031
DO - 10.1016/j.biortech.2010.06.031
M3 - Article
C2 - 20591655
AN - SCOPUS:77957339238
VL - 102
SP - 118
EP - 122
JO - Bioresource Technology
JF - Bioresource Technology
SN - 0960-8524
IS - 1
ER -