The removal of free fatty acids from methyl ester

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

The removal of free fatty acids from methyl ester

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

The removal of free fatty acids from methyl ester

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20700 - Environmental engineering

Projekt

<a href="/cs/project/GA15-21817S" target="_blank" >GA15-21817S: Analýza vztahu mezi strukturou/basicitou Mg/Al, Ca/Al a Zn/Al směsných oxidů a jejich aktivitou v aldol kondenzaci a transesterifikaci</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Renewable Energy

ISSN

0960-1481

e-ISSN

—

Svazek periodika

103

Číslo periodika v rámci svazku

April

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

695-700

Kód UT WoS článku

000392769800061

EID výsledku v databázi Scopus

2-s2.0-85006265636