PROTECTION OF BIODIESEL AND OIL FROM DEGRADATION BY NATURAL ANTIOXIDANTS OF EGYPTIAN JATROPHA

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EL DIWANI G.; EL RAFIE S.; HAWASH S.

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Journal Paper

Paper Information

Journal: INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST) Year:2009 | Volume:6 | Issue:3 (23) Page(s): 369-378

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Title

PROTECTION OF BIODIESEL AND OIL FROM DEGRADATION BY NATURAL ANTIOXIDANTS OF EGYPTIAN JATROPHA

Author(s)

EL DIWANI G. | EL RAFIE S. | HAWASH S. | Issue Writer Certificate

Keywords

PHENOLIC COMPOUNDS

THERMAL STABILITY

TRANSESTERIFICATION

VEGETABLE OIL

Abstract

Residue of methanolic extract of Egyptian Jatropha curcas contains bioactive substances such as PHENOLIC COMPOUNDS, which succeeded to be used as natural antioxidants for the protection of oils and their corresponding biodiesel against oxidative deterioration. In the present work, the residue of Jatropha roots were extracted with methanol and resulting residues were investigated regarding their content of total PHENOLIC COMPOUNDS by folin-Cioalteau assay. Further, the antioxidant activities of the extracts were characterized by the 2,2-diphenyl-1-picrylhydrazyl radical method and proved remarkable results. Oxidation stability of Jatropha oil, used fried oil and olive oil and their corresponding biodiesel obtained by conventional TRANSESTERIFICATION were tested using thermal oxidation. Natural antioxidants such as (a -trocopherol), synthetic antioxidants as butylated hydroxytoluene and natural Jatropha root extract were used in the present study in comparison to investigate their addition effect on the oxidative stability of oils and their corresponding biodiesel. In the rapied thermal treatment test, results showed that addition of butylated hydroxytoluene 0.25% was able to stabilize Jatropha oil 6 h, but poorly stabiliz biodiesel. Addition of 0.25% a-trocopherol to Jatropha oil showed less oxidation stability after 2h thermal treatment. Crude root extract addition at 0.25% to Jatropha oil showed good stability up to 4h thermal treatment while addition of root extract at 0.25% to biodiesel showed better stability up to 6h thermal treatment. Besides addition of 220ppm crude root extract to biodiesel was enough sufficient to occur oxidative stabilization. Also Jatropha root residue addition at 400ppm was effective antioxidant for fresh Jatropha oil.

Cites

EFFECT OF STORAGE PARAMETERS ON STABILITY OF JATROPHA-DERIVED BIODIESEL

References

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APA: Copy

EL DIWANI, G., EL RAFIE, S., & HAWASH, S.. (2009). PROTECTION OF BIODIESEL AND OIL FROM DEGRADATION BY NATURAL ANTIOXIDANTS OF EGYPTIAN JATROPHA. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST), 6(3 (23)), 369-378. SID. https://sid.ir/paper/285167/en

Vancouver: Copy

EL DIWANI G., EL RAFIE S., HAWASH S.. PROTECTION OF BIODIESEL AND OIL FROM DEGRADATION BY NATURAL ANTIOXIDANTS OF EGYPTIAN JATROPHA. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST)[Internet]. 2009;6(3 (23)):369-378. Available from: https://sid.ir/paper/285167/en

IEEE: Copy

G. EL DIWANI, S. EL RAFIE, and S. HAWASH, “PROTECTION OF BIODIESEL AND OIL FROM DEGRADATION BY NATURAL ANTIOXIDANTS OF EGYPTIAN JATROPHA,” INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST), vol. 6, no. 3 (23), pp. 369–378, 2009, [Online]. Available: https://sid.ir/paper/285167/en

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