Investigation of solid base catalysts for biodiesel production from fish oil

Papargyriou, Despoina; Broumidis, Emmanouil; Vere-Tucker, Matthew de; Gavrielides, Stelios; Hilditch, Paul; Irvine, John T. S.; Bonaccorso, Alfredo Damiano

doi:10.1016/j.renene.2019.02.124

Cited by 42 publications

(6 citation statements)

References 52 publications

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“…As regards available scientific data on the production of glycerate metals reported in [12][13][14][15][16][17], our work differs in that we have established the simultaneous effect of the basic conditions of production on the concentration of potassium glycerate in the resulting product. The appropriate rational conditions could make it possible to effectively implement the production of alkali metal glycerates in the manufacturing process, where there is a need for these substances.…”

Section: Discussion Of Results Of Studying the Dependence Of The Effectiveness Of Obtaining Potassium Glycerate On The Processing Conditimentioning

confidence: 99%

“…The basic substance concentration is one of the most important characteristics of the synthesized substances since it determines the rate of introduction, the effectiveness of the use of the substance, its physicochemical properties, the behavior in the mixture with other components. These data are necessary to ensure the proper quality of products [12][13][14].…”

Section: The Effect Of the Heating Temperature Of The Reaction Mixture On The Concentration Of Potassium Glycerate In The Product Has Beementioning

confidence: 99%

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Establishing rational conditions for obtaining potassium glycerate

Sytnik¹,

Kunitsіa

Mazaeva³

et al. 2021

EEJET

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This paper reports a study into the dependence of efficient glycerate potassium production involving glycerin and potassium hydroxide solution on the process conditions. The concentration of potassium glycerate in the resulting product has been used as a parameter of the efficient glycerate potassium production process. Glycerates of metals are applied to produce articles in the construction industry, electronics, medicine; they are employed as transesterification catalysts to obtain special fats for various purposes, as well as biodiesel fuel. In order to derive potassium glycerate, heating was applied while agitating a mixture of glycerin and potassium hydroxide. The analysis of potassium hydroxide was performed, in which the basic substance mass fraction was 85.5 %, the mass fraction of carbonate potassium – 0.9 %. The p.a.-grade glycerin was applied in this work, whose basic substance mass fraction was 99.5 %. The effect of the heating temperature of the reaction mixture on the concentration of potassium glycerate in the product has been determined. It has been shown that the rational heating temperature is 145 °C. The dependence of potassium glycerate concentration in the resulting product on the following conditions of the process has been established: a change in the molar concentration of glycerin and a reaction mixture heating duration. Such rational conditions for obtaining potassium glycerate have been defined as a molar concentration of glycerin of 60 % and a heating duration of 4 hours. The experimentally established concentration of potassium glycerate in the product under these conditions was 75.77 %. For potassium glycerate, the melting point (69 °C) and the mass fraction of moisture (0.8 %) have been determined. The results of experimental studies would make it possible to obtain potassium glycerate directly at enterprises where the glycerates of metals are used, from available raw materials, under rational conditions. The defined conditions for obtaining potassium glycerate could make it possible to efficiently utilize material and energy resources.

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Section: Discussion Of Results Of Studying the Dependence Of The Effectiveness Of Obtaining Potassium Glycerate On The Processing Conditimentioning

confidence: 99%

Section: The Effect Of the Heating Temperature Of The Reaction Mixture On The Concentration Of Potassium Glycerate In The Product Has Beementioning

confidence: 99%

Establishing rational conditions for obtaining potassium glycerate

Sytnik¹,

Kunitsіa

Mazaeva³

et al. 2021

EEJET

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show abstract

“…Note that the catalytic activities of transesterification exhibited in the same sequence. Among these AMOs, CaO exhibited promise as a heterogeneous catalyst for biodiesel production [58,61,62]. It is noteworthy to mention that CaO is less soluble in methanol, stable at high temperature, possesses high reaction activity, is non-toxic, naturally abundant and cheap [63,64].…”

Section: Solid Base Catalystsmentioning

confidence: 99%

“…Although CaO is highly active for the transesterification process, the CaO is limited in stability and sensitive to FFA content and frequent dissolution and leaching of Ca 2+ ions. This phenomenon resulted in reduction of catalytic activity during a reusability study, where the leached Ca 2+ contaminated the biodiesel product at the end of the process [61,102]. Indeed, CaO catalysts have been extensively modified by adding a second or more chemical components to improve its catalytic activity and the stability of the system.…”

Section: Modified Waste Shells-derived Catalyst For Biodiesel Productionmentioning

confidence: 99%

Progress on Modified Calcium Oxide Derived Waste-Shell Catalysts for Biodiesel Production

et al. 2021

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The dwindling of global petroleum deposits and worsening environmental issues have triggered researchers to find an alternative energy such as biodiesel. Biodiesel can be produced via transesterification of vegetable oil or animal fat with alcohol in the presence of a catalyst. A heterogeneous catalyst at an economical price has been studied widely for biodiesel production. It was noted that various types of natural waste shell are a potential calcium resource for generation of bio-based CaO, with comparable chemical characteristics, that greatly enhance the transesterification activity. However, CaO catalyzed transesterification is limited in its stability and studies have shown deterioration of catalytic reactivity when the catalyst is reused for several cycles. For this reason, different approaches are reviewed in the present study, which focuses on modification of waste-shell derived CaO based catalyst with the aim of better transesterification reactivity and high reusability of the catalyst for biodiesel production. The catalyst stability and leaching profile of the modified waste shell derived CaO is discussed. In addition, a critical discussion of the structure, composition of the waste shell, mechanism of CaO catalyzed reaction, recent progress in biodiesel reactor systems and challenges in the industrial sector are also included in this review.

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“…The flash point helps to estimate the minimum temperature at which fuel is converted to vapor in the form of a flammable mixture with air. The high flash point is useful for fuel transportation and storage because of its thermal stability (Dhawane et al 2018;Papargyriou et al 2019;Karmakar et al 2020). The pour point is an important parameter to show the fuel flowability.…”

Section: Physicochemical Properties Of the Biodieselmentioning

confidence: 99%

Parametric optimization of biodiesel synthesis from Capparis spinosa oil using NaOH/NaX as nanoheterogeneous catalyst by response surface methodology

Helmi

Tahvildari

Hemmati

2020

Braz. J. Chem. Eng.

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In this research, Capparis spinosa oil was used as a feedstock for biodiesel production in the presence of NaOH/NaX as a nano heterogeneous catalyst. The NaOH/NaX catalyst was characterized by XRD, SEM, and BET analyses. The transesterification reaction was optimized through response surface methodology (RSM) based on the central composite design (CCD) of experiments. The effects of key variables of catalyst weight, methanol to oil molar ratio, and time on the reaction were studied, and a precise discussion about the impact of each process variable on the biodiesel yield was carried out. The highest biodiesel yield was 90.33% for the optimum reaction conditions that include a constant temperature of 60 °C, methanol to oil molar ratio of 6.7:1, catalyst weight of 2.3 wt%, and reaction time of 1.24 h. Furthermore, all physicochemical properties of the produced biodiesel were matched to the ASTM standard. Based on the obtained results, Capparis spinosa oil is a suitable source for biodiesel production.

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Investigation of solid base catalysts for biodiesel production from fish oil

Cited by 42 publications

References 52 publications

Establishing rational conditions for obtaining potassium glycerate

Establishing rational conditions for obtaining potassium glycerate

Progress on Modified Calcium Oxide Derived Waste-Shell Catalysts for Biodiesel Production

Parametric optimization of biodiesel synthesis from Capparis spinosa oil using NaOH/NaX as nanoheterogeneous catalyst by response surface methodology

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