Login for students

Login for employees

Publication detail

Acceleration and simplification of separation by addition of inorganic acid in biodiesel production
Authors: Vávra Aleš | Hájek Martin | Skopal František
Year: 2018
Type of publication: článek v odborném periodiku
Name of source: Journal of Cleaner Production
Publisher name: Elsevier Science
Place: Oxford
Page from-to: 390-395
Titles:
Language Name Abstract Keywords
cze Urychlení a zjednodušení separace přídavkem anorganických kyselin při produkci bionafty Článek popisuje nový přístup k zastavení transesterifikace a separaci produktů přídavkem anorganických kyselin (HCl, H3PO4) k celé reakční směsi po reakci. nejlepšího výsledku bylo dosaženo přídavkem kyseliny fosforečné v poměru 0,25 hmot.% v oleji. Výhodou je relativně rychlá separace a bionafta splňující normu EN 14214 bez dalších čistících procesů. bionafta; transesterifikace; separace; anorganické kyseliny
eng Acceleration and simplification of separation by addition of inorganic acid in biodiesel production This paper describes a new approach to transesterification stopping and separation improving by the addition of inorganic acid, hydrochloric and phosphoric, to the whole reaction mixture after the reaction. The transesterification of oil was carried out by methanol and potassium hydroxide as the catalyst. The inorganic acid neutralises methoxide ions (formed from methanol and potassium hydroxide) and transforms soaps (formed by oil saponification) to fatty acids, which increases the acid number. The principle of stopping is the neutralization of the methoxide ions only. Best results are achieved by concentrated phosphoric acid with a ratio of 0.25 wt% to oil. The advantage is that separation is relatively fast (5 h) and the biodiesel conforms to EN 14214 without any other purification processes such as centrifugation, wet and dry washing and drying of the ester phase. Moreover, the content of glycerol in the formed glycerol phase is approximately 75%. This method of biodiesel production, which uses neutralization of methoxide ions after the transesterification followed by separation, saves energy because no purification processes are needed and no waste is formed. The biodiesel is more environmentally friendly because less energy is consumed. Biodiesel; Transesterification; Separation; Inorganic acid

Departments

Other Parts

Map

en.mapy.cz

Services

Popular Links

© 2023 University of Pardubice, Studentská 95, 532 10 Pardubice 2
Phone: +420 466 036 111, 466 036 112, 466 036 113
Webmaster, RSS
Data box ID: f5vj9hu
Accessibility Statement
CC BY-NC-ND 4.0Creative CommonsAttributionNonCommercialNoDerivatives