Acid-catalyzed esterification of Zanthoxylum bungeanum seed oil with high free fatty acids for biodiesel production
A technique to produce biodiesel from crude Zanthoxylum bungeanum seed oil (ZSO) with high free fatty acids (FFA) was developed. The acid value of ZSO was reduced to 1.16 mg KOH/g from 45.51 mg KOH/g by only one-step acid-catalyzed esterification with methanol-to-oil molar ratio 24:1, H 2SO 4 2%, te...
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| Published in | Bioresource technology Vol. 99; no. 18; pp. 8995 - 8998 |
|---|---|
| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Kidlington
Elsevier Ltd
01.12.2008
[New York, NY]: Elsevier Ltd Elsevier |
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| Online Access | Get full text |
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| Abstract | A technique to produce biodiesel from crude
Zanthoxylum bungeanum seed oil (ZSO) with high free fatty acids (FFA) was developed. The acid value of ZSO was reduced to 1.16
mg KOH/g from 45.51
mg KOH/g by only one-step acid-catalyzed esterification with methanol-to-oil molar ratio 24:1, H
2SO
4 2%, temperature 60
°C and reaction time 80
min, which was selected as optimum for the acid-catalyzed esterification. During the acid-catalyzed esterification, FFA was converted into fatty acid methyl esters, which was confirmed by
1H NMR spectrum. Compared with the other two-step pretreatment procedure, this one-step pretreatment can reduce the production cost of ZSO biodiesel. Alkaline-catalyzed transesterification converted the pretreated ZSO into ZSO biodiesel. The yield of ZSO biodiesel was above 98% determined by
1H NMR spectrum. This study supports the use of crude ZSO as a viable and valuable raw feedstock for biodiesel production. |
|---|---|
| AbstractList | A technique to produce biodiesel from crude Zanthoxylum bungeanum seed oil (ZSO) with high free fatty acids (FFA) was developed. The acid value of ZSO was reduced to 1.16mg KOH/g from 45.51mg KOH/g by only one-step acid-catalyzed esterification with methanol-to-oil molar ratio 24:1, H(2)SO(4) 2%, temperature 60 degrees C and reaction time 80min, which was selected as optimum for the acid-catalyzed esterification. During the acid-catalyzed esterification, FFA was converted into fatty acid methyl esters, which was confirmed by (1)H NMR spectrum. Compared with the other two-step pretreatment procedure, this one-step pretreatment can reduce the production cost of ZSO biodiesel. Alkaline-catalyzed transesterification converted the pretreated ZSO into ZSO biodiesel. The yield of ZSO biodiesel was above 98% determined by (1)H NMR spectrum. This study supports the use of crude ZSO as a viable and valuable raw feedstock for biodiesel production.A technique to produce biodiesel from crude Zanthoxylum bungeanum seed oil (ZSO) with high free fatty acids (FFA) was developed. The acid value of ZSO was reduced to 1.16mg KOH/g from 45.51mg KOH/g by only one-step acid-catalyzed esterification with methanol-to-oil molar ratio 24:1, H(2)SO(4) 2%, temperature 60 degrees C and reaction time 80min, which was selected as optimum for the acid-catalyzed esterification. During the acid-catalyzed esterification, FFA was converted into fatty acid methyl esters, which was confirmed by (1)H NMR spectrum. Compared with the other two-step pretreatment procedure, this one-step pretreatment can reduce the production cost of ZSO biodiesel. Alkaline-catalyzed transesterification converted the pretreated ZSO into ZSO biodiesel. The yield of ZSO biodiesel was above 98% determined by (1)H NMR spectrum. This study supports the use of crude ZSO as a viable and valuable raw feedstock for biodiesel production. A technique to produce biodiesel from crude Zanthoxylum bungeanum seed oil (ZSO) with high free fatty acids (FFA) was developed. The acid value of ZSO was reduced to 1.16 mg KOH/g from 45.51 mg KOH/g by only one-step acid-catalyzed esterification with methanol-to-oil molar ratio 24:1, H 2SO 4 2%, temperature 60 °C and reaction time 80 min, which was selected as optimum for the acid-catalyzed esterification. During the acid-catalyzed esterification, FFA was converted into fatty acid methyl esters, which was confirmed by 1H NMR spectrum. Compared with the other two-step pretreatment procedure, this one-step pretreatment can reduce the production cost of ZSO biodiesel. Alkaline-catalyzed transesterification converted the pretreated ZSO into ZSO biodiesel. The yield of ZSO biodiesel was above 98% determined by 1H NMR spectrum. This study supports the use of crude ZSO as a viable and valuable raw feedstock for biodiesel production. A technique to produce biodiesel from crude Zanthoxylum bungeanum seed oil (ZSO) with high free fatty acids (FFA) was developed. The acid value of ZSO was reduced to 1.16 mg KOH/g from 45.51 mg KOH/g by only one-step acid-catalyzed esterification with methanol-to-oil molar ratio 24:1, H sub(2)SO sub(4) 2%, temperature 60 degree C and reaction time 80 min, which was selected as optimum for the acid-catalyzed esterification. During the acid- catalyzed esterification, FFA was converted into fatty acid methyl esters, which was confirmed by super(1)H NMR spectrum. Compared with the other two-step pretreatment procedure, this one-step pretreatment can reduce the production cost of ZSO biodiesel. Alkaline-catalyzed transesterification converted the pretreated ZSO into ZSO biodiesel. The yield of ZSO biodiesel was above 98% determined by super(1)H NMR spectrum. This study supports the use of crude ZSO as a viable and valuable raw feedstock for biodiesel production. A technique to produce biodiesel from crude Zanthoxylum bungeanum seed oil (ZSO) with high free fatty acids (FFA) was developed. The acid value of ZSO was reduced to 1.16mg KOH/g from 45.51mg KOH/g by only one-step acid-catalyzed esterification with methanol-to-oil molar ratio 24:1, H(2)SO(4) 2%, temperature 60 degrees C and reaction time 80min, which was selected as optimum for the acid-catalyzed esterification. During the acid-catalyzed esterification, FFA was converted into fatty acid methyl esters, which was confirmed by (1)H NMR spectrum. Compared with the other two-step pretreatment procedure, this one-step pretreatment can reduce the production cost of ZSO biodiesel. Alkaline-catalyzed transesterification converted the pretreated ZSO into ZSO biodiesel. The yield of ZSO biodiesel was above 98% determined by (1)H NMR spectrum. This study supports the use of crude ZSO as a viable and valuable raw feedstock for biodiesel production. A technique to produce biodiesel from crude Zanthoxylum bungeanum seed oil (ZSO) with high free fatty acids (FFA) was developed. The acid value of ZSO was reduced to 1.16mg KOH/g from 45.51mg KOH/g by only one-step acid-catalyzed esterification with methanol-to-oil molar ratio 24:1, H₂SO₄ 2%, temperature 60°C and reaction time 80min, which was selected as optimum for the acid-catalyzed esterification. During the acid-catalyzed esterification, FFA was converted into fatty acid methyl esters, which was confirmed by ¹H NMR spectrum. Compared with the other two-step pretreatment procedure, this one-step pretreatment can reduce the production cost of ZSO biodiesel. Alkaline-catalyzed transesterification converted the pretreated ZSO into ZSO biodiesel. The yield of ZSO biodiesel was above 98% determined by ¹H NMR spectrum. This study supports the use of crude ZSO as a viable and valuable raw feedstock for biodiesel production. |
| Author | Zhang, Junhua Jiang, Lifeng |
| Author_xml | – sequence: 1 givenname: Junhua surname: Zhang fullname: Zhang, Junhua email: zjhjerry@nwsuaf.edu.cn – sequence: 2 givenname: Lifeng surname: Jiang fullname: Jiang, Lifeng |
| BackLink | http://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=20790701$$DView record in Pascal Francis https://www.ncbi.nlm.nih.gov/pubmed/18562195$$D View this record in MEDLINE/PubMed |
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| Keywords | Biodiesel Zanthoxylum bungeanum seed oil Acid esterification Free fatty acids Dicotyledones Angiospermae Rutaceae Spermatophyta Vegetable oil Free fatty acid Acid catalysis Esterification |
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| Snippet | A technique to produce biodiesel from crude
Zanthoxylum bungeanum seed oil (ZSO) with high free fatty acids (FFA) was developed. The acid value of ZSO was... A technique to produce biodiesel from crude Zanthoxylum bungeanum seed oil (ZSO) with high free fatty acids (FFA) was developed. The acid value of ZSO was... |
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| SubjectTerms | Acid esterification acid treatment acid value alkali treatment analysis Biodiesel Bioelectric Energy Sources Biofuel production Biological and medical sciences Biotechnology Catalysis catalysts chemistry Energy Esterification fatty acid esters Fatty Acids, Nonesterified Fatty Acids, Nonesterified - analysis Fatty Acids, Nonesterified - metabolism Free fatty acids Fundamental and applied biological sciences. Psychology Industrial applications and implications. Economical aspects Magnetic Resonance Spectroscopy metabolism Methanol nuclear magnetic resonance spectroscopy Plant Oils Plant Oils - chemistry Plant Oils - metabolism pretreatment seed oils Seeds Seeds - chemistry Sulfuric Acids Sulfuric Acids - metabolism Temperature Time Factors transesterification yields Zanthoxylum Zanthoxylum - metabolism Zanthoxylum bungeanum Zanthoxylum bungeanum seed oil |
| Title | Acid-catalyzed esterification of Zanthoxylum bungeanum seed oil with high free fatty acids for biodiesel production |
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