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The removal of free fatty acids from methyl ester

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F17%3A39902699" target="_blank" >RIV/00216275:25310/17:39902699 - isvavai.cz</a>

  • Result on the web

    <a href="http://dx.doi.org/10.1016/j.renene.2016.10.084" target="_blank" >http://dx.doi.org/10.1016/j.renene.2016.10.084</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.renene.2016.10.084" target="_blank" >10.1016/j.renene.2016.10.084</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    The removal of free fatty acids from methyl ester

  • Original language description

    This paper focused on the removal of free fatty acids from the ester phase. Transesterification was stopped by neutralization of the catalyst (KOH) by phosphoric acid addition to the reaction mixture. The advantages of this method are a very fast separation, an ester phase that does not contain potassium ions and free glycerol, and a relatively high purity of the glycerol phase. The disadvantage is the formation of free fatty acids, which were removed by the addition of calcium hydroxide, a reaction that formed solid calcium soaps that were removed by centrifugation. The conditions of removal (independent variables), such as the acid number of the input ester phase, molar ratio of calcium to FFAs and addition of water, were studied. The relations between independent and dependent variables (acid number, amount of calcium ions and water in the ester phase) are described. The model allowed for the calculation of conditions, so that the biodiesel fulfilled EN14214: a molar ratio of calcium to FFAs of 3.33:1, the addition of 1.45 mu l water to 1 g of the ester phase and a reaction time of 3 h. This preparation of methyl ester is nearly without waste and does not use water for purification.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20700 - Environmental engineering

Result continuities

  • Project

    <a href="/en/project/GA15-21817S" target="_blank" >GA15-21817S: Analysis of the structure/activity relationship of Mg/Al, Ca/Al and Zn/Al mixed oxides in aldol condensation and transesterification reactions</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2017

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Renewable Energy

  • ISSN

    0960-1481

  • e-ISSN

  • Volume of the periodical

    103

  • Issue of the periodical within the volume

    April

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    6

  • Pages from-to

    695-700

  • UT code for WoS article

    000392769800061

  • EID of the result in the Scopus database

    2-s2.0-85006265636