Application of the factorial design of experiments and response surface methodology to optimize biodiesel production

Vicente, Gemma; Coteron, A.; Martı́nez, Mercedes; Aracil, José

doi:10.1016/s0926-6690(97)10003-6

Cited by 392 publications

(204 citation statements)

References 4 publications

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“…The homogeneous catalysts include alkalis or acids. The most commonly used alkali catalysts are sodium hydroxide, sodium methoxide and potassium hydroxide 3) 7) , and the preferred acid catalysts include sulfuric acid, hydrochloric acid and sulfonic acid 4), 8) . The heterogeneous catalysts include enzymes 9) 11) , titanium _ silicates, alkaline _ earth metal compounds 12) , guanadines heterogenized on organic polymers 13) , and sugar catalyst 14) .…”

Section: Introductionmentioning

confidence: 99%

超音波照射によるトリオレインとエタノールのエステル交換反応に与えるモル比，触媒濃度および温度の影響

Hanh¹,

Okitsu²,

Maeda³

et al. 2007

J. Jpn. Petrol. Inst.

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The transesterification of triolein with ethanol to make biodiesel fuel was investigated under ultrasonic irradiation to evaluate the effects of the amount of base catalyst (NaOH or KOH), molar ratio of ethanol to triolein, and temperature. Transesterifi cation of triolein with ethanol readily proceeded under 40 kHz ultrasonic irradiation and the most suitable condition at 25 C was a molar ratio of ethanol/triolein of 6/1, base catalyst concentration of 1 wt for both NaOH and KOH, and reaction time of less than 20 min. In addition, the effect of temperature on the ethanolysis of triolein was investigated. The apparent activation energy estimated under ultrasonic irradiation was almost the same as that reported under stirring. The present results suggest that ultrasonic cavitation provides effective emulsification of triolein and ethanol, resulting in higher rate of transesterification reaction compared with that under stirring.

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Section: Introductionmentioning

confidence: 99%

超音波照射によるトリオレインとエタノールのエステル交換反応に与えるモル比，触媒濃度および温度の影響

Hanh¹,

Okitsu²,

Maeda³

et al. 2007

J. Jpn. Petrol. Inst.

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“…This specific result obtained for both enzymes with 30 ml of solvent will not be overemphasized, as it does not bring new information nor is it the focus of the present work; i.e., differences found between the performance of Novozym 435 compared to lipozyme Im are not stressed as they may be considered a "classical result" available in the open literature (OlIVEIRA et al, 2005a;VICENTE et al, 1998). Perhaps, the poorer performance verified for Novozym 435, compared to lipozyme Im, may be related to substrate inhibition (alcohol and/or oil), solvent denaturing caused by deleterious interaction between the enzyme-solvent.…”

Section: Resultsmentioning

confidence: 98%

The role of organic solvent amount in the lipase-catalyzed biodiesel production

Rosa

Oliveira

2010

Food Sci. Technol

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This research note addresses the role of organic solvent amount in the production of fatty acid ethyl esters from soybean oil. N-hexane was chosen as solvent and two commercial immobilized lipases as catalysts, Novozym 435 and Lipozyme IM. The reactions were conducted in 6 hours, varying the solvent to oil ratio from zero to 50 (v/wt) and adopting adopting for Novozym 435: 65 ºC, enzyme concentration (E, wt%) = 5, oil to ethanol molar ratio (R) = 1:10, water addition (H, wt%) = 0, and for Lipozyme IM: 35 ºC, E = 5 wt%, R = 1:3, H = 10 wt%. For Lipozyme IM, an increase in solvent amount is shown to lead to an enhancement of reaction conversion, while a negligible effect was found for Novozym 435. When using 30 mL of solvent the reaction conversions were 88% for Lipozyme IM and 15% for Novozym 435.

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“…This research is often focused on understanding the mechanism or principles underlying experimental observation, or determining the technically feasibility of an emerging technology. Factorial designs are often implemented to study the effect of each effect factor on the response variable (i.e., biofuel yield), as well as the effect of interactions between factors on the response variable [83]. Further, data at the field/lab scale typically has low uncertainty, and is often used for calibration and parameterization in process models.…”

Section: Field Trials and Laboratory Scale Experimentsmentioning

confidence: 99%

Design of Sustainable Biofuel Processes and Supply Chains: Challenges and Opportunities

et al. 2015

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Abstract:The current methodological approach for developing sustainable biofuel processes and supply chains is flawed. Life cycle principles are often retrospectively incorporated in the design phase resulting in incremental environmental improvement rather than selection of fuel pathways that minimize environmental impacts across the life cycle. Further, designing sustainable biofuel supply chains requires joint consideration of economic, environmental, and social factors that span multiple spatial and temporal scales. However, traditional life cycle assessment (LCA) ignores economic aspects and the role of ecological goods and services in supply chains, and hence is limited in its ability for guiding decisionmaking among alternatives-often resulting in sub-optimal solutions. Simultaneously incorporating economic and environment objectives in the design and optimization of emerging biofuel supply chains requires a radical new paradigm. This work discusses key research opportunities and challenges in the design of emerging biofuel supply chains and provides a high-level overview of the current "state of the art" in environmental sustainability assessment of biofuel production. Additionally, a bibliometric analysis of over 20,000 biofuel research articles from 2000-to-present is performed to identify active topical areas of research in the biofuel literature, quantify the relative strength of connections between various biofuels research domains, and determine any potential research gaps. OPEN ACCESSProcesses 2015, 3 635

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Application of the factorial design of experiments and response surface methodology to optimize biodiesel production

Cited by 392 publications

References 4 publications

超音波照射によるトリオレインとエタノールのエステル交換反応に与えるモル比，触媒濃度および温度の影響

超音波照射によるトリオレインとエタノールのエステル交換反応に与えるモル比，触媒濃度および温度の影響

The role of organic solvent amount in the lipase-catalyzed biodiesel production

Design of Sustainable Biofuel Processes and Supply Chains: Challenges and Opportunities

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