In-situ transesterification of rapeseed and cost indicators for biodiesel production

El-Enin, Sanaa A. Abo; Attia, N. K.; El-Ibiari, N.N.; Diwani, G. El; El–Khatib, K.M.

doi:10.1016/j.rser.2012.10.033

Cited by 55 publications

(28 citation statements)

References 59 publications

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“…1 H NMR analysis showed a strong singlet peak at 3.7 ppm which is characteristic for methyl ester protons of the FAMEs created during the esterification of algal oils [56]. Similar type of result was also reported by El-Enin et al [55]. They achieved 90% of biodiesel conversion calculated from 1 H NMR spectrum analysis.…”

Section: Gc-ms and Nmr Spectroscopic Analysissupporting

confidence: 84%

“…These two distinct peaks confirmed the presence of methyl groups in biodiesel of S. bijugatus. The methyl ester yield was calculated directly from the integrated areas of the signals from methylene and methoxy protons [55]. This analysis confirms that the two-step sequential process of transesterification helps for maximum conversion of lipids to biodiesel up to 91%.…”

Section: Gc-ms and Nmr Spectroscopic Analysissupporting

confidence: 55%

See 1 more Smart Citation

An integrated approach for biodiesel and bioethanol production from Scenedesmus bijugatus cultivated in a vertical tubular photobioreactor

Ashokkumar

Salam

Tiwari

et al. 2015

Energy Conversion and Management

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Section: Gc-ms and Nmr Spectroscopic Analysissupporting

confidence: 84%

Section: Gc-ms and Nmr Spectroscopic Analysissupporting

confidence: 55%

An integrated approach for biodiesel and bioethanol production from Scenedesmus bijugatus cultivated in a vertical tubular photobioreactor

Ashokkumar

Salam

Tiwari

et al. 2015

Energy Conversion and Management

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“…Superpro Designer is a highly valuable tool by which scientists and engineers can assess the economics, process development needs, and environmental impacts of a technology before committing to a full scale implementation and commercialization. These tools have been successfully applied to determine the economic costs and feasibilities in various technology areas, including biodiesel production from refined soybean (Haas et al, 2006), rapeseed (Abo El-Enin et al, 2013), and algal oils (Taylor, et al, 2013). We have previously used this software to model H-Ferrierite zeolite catalyzed branching of oleic acid to produce IA .…”

Section: Introductionmentioning

confidence: 99%

Techno-Economic Analysis of an Improved Process for Producing Saturated Branched-Chain Fatty Acids

Ngo¹,

Yee²,

McAloon³

et al. 2014

JAS

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Methyl-branched fatty acids produced by isomerization of oleic acid ('isostearic' acids (IA)) are industrially useful products with excellent thermostabilities and lubricities and reduced freezing points relative to stearic acid. They have potential utility as biodiesel or a biodiesel additive imparting improved low temperature fluidity. We present a techno-economic model for industrial scale production of isostearic acid by zeolite-catalyzed isomerization. A catalyst regeneration loop allowing 20 reaction cycles was included. Use of catalyst for 15 or more reaction cycles reduced process cost by 51% vs. a single use reaction format. However, with a best-case predicted production cost of $2.375/kg ($1.080/lb), further process cost reductions will be required before use of IA esters as high percentage blend components of biodiesel is economically feasible.

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“…Given that our proposed system is similar to the cryogenic air separation unit (ASU), the reference data for component overnight cost estimation are gathered from the literature on ASU to ensure the calculation's accuracy and validity [38][39][40][41]. The calculation methodology employed to estimate the component overnight costs follows the method used by Holt and Kreutz in studies comparing alternative IGCC systems based on a series of EPRI-sponsored studies.…”

Section: Component Overnight Cost Estimationmentioning

confidence: 99%

“…Detailed reference data are listed in Table 3. [38] and Lozza and Chiesa [39]; b: Gas-liquid separator is applied here; costs taken from El-Enin [40]; c: Data taken from Haas [41]; d: n = 1 for all components in the proposed system.…”

Section: Component Overnight Cost Estimationmentioning

confidence: 99%

An Improved CO2 Separation and Purification System Based on Cryogenic Separation and Distillation Theory

et al. 2014

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Abstract:In this study, an improved CO 2 separation and purification system is proposed based on in-depth analyses of cryogenic separation and distillation theory as well as the phase transition characteristics of gas mixtures containing CO 2 . Multi-stage compression, refrigeration, and separation are adopted to separate the majority of the CO 2 from the gas mixture with relatively low energy penalty and high purity. Subsequently, the separated crude liquid CO 2 is distilled under high pressure and near ambient temperature conditions so that low energy penalty purification is achieved. Simulation results indicate that the specific energy consumption for CO 2 capture is only 0.425 MJ/kgCO 2 with 99.9% CO 2 purity for the product. Techno-economic analysis shows that the total plant investment is relatively low. Given its technical maturity and great potential in large-scale production, compared to conventional MEA and Selexol TM absorption methods, the cost of CO 2 capture of the proposed system is reduced by 57.2% and 45.9%, respectively. The result of this study can serve as a novel approach to recovering CO 2 from high CO 2 concentration gas mixtures.

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In-situ transesterification of rapeseed and cost indicators for biodiesel production

Cited by 55 publications

References 59 publications

An integrated approach for biodiesel and bioethanol production from Scenedesmus bijugatus cultivated in a vertical tubular photobioreactor

An integrated approach for biodiesel and bioethanol production from Scenedesmus bijugatus cultivated in a vertical tubular photobioreactor

Techno-Economic Analysis of an Improved Process for Producing Saturated Branched-Chain Fatty Acids

An Improved CO2 Separation and Purification System Based on Cryogenic Separation and Distillation Theory

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