Supercritical biodiesel production and power cogeneration: Technical and economic feasibilities

Deshpande, Amit; Anitescu, G.; Rice, Philip A.; Tavlarides, Lawrence L.

doi:10.1016/j.biortech.2009.10.034

Cited by 68 publications

(47 citation statements)

References 21 publications

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“…The different configurations (flowsheets) are currently assessed by using commercial chemical process simulators and life cycle assessment (Glisic and Skala, 2009;Deshpande et al, 2010;Lee et al, 2011;Kiwjaroun et al, 2009). Lee et al (2011) evaluated three continuous biodiesel processes, including a conventional alkali-catalyzed process using both fresh and waste vegetable oil and a supercritical methanol process using waste vegetable oil as the raw material and reported that the alkali-catalyzed process using fresh vegetable oil had the lowest total capital investment, but the supercritical process was the most economically feasible overall, providing a lower manufacturing cost and higher net present value and a discounted cash flow rate of return.…”

Section: Innovative Technology In Biodiesel Production By Scmmentioning

confidence: 99%

“…Lee et al (2011) evaluated three continuous biodiesel processes, including a conventional alkali-catalyzed process using both fresh and waste vegetable oil and a supercritical methanol process using waste vegetable oil as the raw material and reported that the alkali-catalyzed process using fresh vegetable oil had the lowest total capital investment, but the supercritical process was the most economically feasible overall, providing a lower manufacturing cost and higher net present value and a discounted cash flow rate of return. Deshpande et al (2010) reported an economic analysis of the proposed supercritical process and found that the biodiesel processing cost through the proposed technology could be half of that of the current conventional methods.…”

Section: Innovative Technology In Biodiesel Production By Scmmentioning

confidence: 99%

“…The economic analysis of the processes for biodiesel production using homogeneous alkaline catalysis and SCM has been reported (Glisic and Skala, 2009;Deshpande et al, 2010). It was noted that energy consumption is extremely similar in both cases.…”

Section: Introductionmentioning

confidence: 99%

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Biodiesel production through non-catalytic supercritical transesterification: current state and perspectives

Silva

Oliveira

2014

Braz. J. Chem. Eng.

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-The inconveniences of the conventional method for biodiesel production by alkaline catalysis suggests research towards alternative methods, with the non-catalytic transesterification using an alcohol at supercritical conditions proposed as a promising technique for biodiesel production. The so-called supercritical method (SCM) has powerful advantages over conventional techniques, such as fast reaction rates, feedstock flexibility, production efficiency and environmentally friendly benefits. However, application of this methodology has some limitations, like operating conditions (elevated temperature and pressure and higher amounts of alcohol), which result in high energy costs and degradation of the products generated. In this review paper the state of the art in relation to the use of the SCM for biodiesel production is reported and discussed, describing the characteristics of the method, the influence of operational parameters on the ester yield, patents available in the field and the perspectives for application of the technique.

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Section: Innovative Technology In Biodiesel Production By Scmmentioning

confidence: 99%

Section: Innovative Technology In Biodiesel Production By Scmmentioning

confidence: 99%

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Biodiesel production through non-catalytic supercritical transesterification: current state and perspectives

Silva

Oliveira

2014

Braz. J. Chem. Eng.

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“…Almost all the triglycerides, even from poor quality, can be converted into high quality biodiesel fuel, without significant pre-treatment (Deshpande et al, 2010). According to literature, the conversion yield of waste cooking oil into biodiesel has been reported to be around 80 -90%, depending on the quality of waste cooking oil, the process for refining, technology and practices used during transesterification (Papageorgiou, 2009).…”

Section: Waste Cooking Oilmentioning

confidence: 99%

Feasibility Evaluation of a Biodiesel Plant fed by Recycled Edible Oils Comparing two Alternative Production Technologies

Korakaki

Georgakellos²

2014

Global NEST Journal

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The present work is about the techno-economic evaluation of a biodiesel industrial unit that exclusively use recycled edible oils as feedstock, for two alternative production technologies. Nowadays, many biodiesel production units use a mixture of virgin vegetable oils and waste cooking oils. The examined unit will use only waste cooking oil as raw material. Thus, two different methods for biodiesel production are assessed on a financial basis for different biodiesel prices. The investigated methods are the alkaline transesterification (a very common biodiesel production method) and the supercritical transesterification (a method with non sensitivity in moisture and free fatty acids and thus not requiring a pre-treatment stage). According to the financial evaluation, the acceptance of the project for each technology is strongly affected by biodiesel's price. The results showed that the alkaline transesterification based project is accepted for the whole examined prices' range while for supercritical transesterification, the project is accepted for biodiesel prices of about 0.75-0.85 €/L.

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“…In 2009, carbon dioxide was applied to supercritical transesterification with ethanol to reduce the operating conditions (Bertoldi et al, 2009). From 2007 to 2010, numerous additional studies, such as vapor-liquid equilibria of binary systems (Anitescu et al, 2008;Fang et al, 2008;Shimoyama et al, 2008;Shimoyama et al, 2009;Tang et al, 2006), phase behavior of the reaction mixture (Glišic & Skala, 2010;Hegel et al, 2008;Hegel et al, 2007), thermal stability of unsaturated fatty acids in supercritical methanol (Imahara et al, 2008) and process simulation and economic analysis (Busto et al, 2006;D'Ippolito et al, 2006;Deshpande et al, 2010;Diaz et al, 2009;van Kasteren & Nisworo, 2007) were reported, leading to a better understanding of the supercritical transesterification process.…”

Section: The Chronological Development Of Supercritical Transesterifimentioning

confidence: 99%

Transesterification in Supercritical Conditions

Ngamprasertsith¹,

Sawangkeaw²

2011

Biodiesel - Feedstocks and Processing Technologies

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Supercritical biodiesel production and power cogeneration: Technical and economic feasibilities

Cited by 68 publications

References 21 publications

Biodiesel production through non-catalytic supercritical transesterification: current state and perspectives

Biodiesel production through non-catalytic supercritical transesterification: current state and perspectives

Feasibility Evaluation of a Biodiesel Plant fed by Recycled Edible Oils Comparing two Alternative Production Technologies

Transesterification in Supercritical Conditions

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