Open AccessEffect of Impeller Types on Saponification Reaction Using Stirred Tank Reactor
Author(s) -
Rosdanelli Hasibuan,
R. R. Parsaulian,
Fransiska Adventi,
Robert Manurung,
Juliza Hidayati
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1542/1/012017
Subject(s) - paddle , impeller , saponification , materials science , alkali metal , blade (archaeology) , turbine , chemistry , mechanical engineering , composite material , chromatography , engineering , organic chemistry
The choice of impeller type is an important factor in maximizing the performance of a stirred tank reactor in saponification process. This study aims to determine the type of impeller that can produce the highest reaction rate by taking into account changes in alkali concentration in saponification reactions so as to obtain a shorter residence time. The saponification process was carried out by reacting 30% oil with alkali (KOH) at operating conditions 70°C, stirring speed of 400 rpm for 45 minutes using 4 types of impellers namely paddle-2 blades, pitch blade turbine 45°-2 blades, paddle-4 blades, pitch blade turbine 45°-4 blades. Testing of alkali concentration was carried out every 5 minutes until the reaction was complete. Alkali concentration was obtained at the end of the reaction using a paddle-2 bladesimpeller of 0.182 M with a conversion of 97.35%, a pitch blade turbine 45°-2 bladesof 0.142 M with a conversion of 97.93%, paddle-2 bladesof 0.106 M with conversion of 98.46%, pitch blade turbine 45°-4 blades of 0.100 M with conversion of 98.54%.