UJI PERFORMANSI PENCUCI BIODIESEL METODE PENGKABUTAN AIR DALAM MINYAK
Abstract: Washing of biodiesel
removes contaminants (soap, catalyst, methanol and free glycerin) from
biodiesel, even though this activity will sometimes cause an emulsion. This
research aims to develop new method of washing that can minimize
emulsification. The method used is misting water in crude biodiesel by certain
nozzle. Washing apparatus has 5 main part i.e. nozzle, washing chamber,
circulation pump, valve to set level of debit and piping channel. The research
has been done to study dependency of biodiesel washing on the numbers of
nozzles (2, 3 and 4) , the distance between nozzle and constrictor plate (2 cm,
4 cm, 6 cm and 8 cm) and the level of wash water debit 45.3 ml/min,83.6 ml/min
and 150 ml/min. Parameters measured were pH of wash water, emulsion formed,
rendemen of biodiesel, quality of biodiesel and energy consumption. Variation
of the numbers of nozzles are purposed to have more extensively contact between
water and biodiesel. At optimum level of debit, high performance biodiesel
washing expeted, with little emulsion can be obtained. The research indicates
that the numbers of nozzles, the distance of nozzle and level of water debit
are significant variables to determine washing performance. The research showed
that washing biodiesel with the numbers of nozzles 4 pc, debit of washing water
83.6 ml/min and 45.3ml/min and distance between nozzle and constrictor plate 8
cm produce 100 % biodiesel for every step washing, with pH of washing water at
third washing 7.1 and emulsion formed 81.6 ml . Misting water in oil method
needs smaller energy than others, i.e. only 4% of stirrer method and 1.2% of
bubble method. Quality biodiesel – i.e. density, flash point, cetane index,
cloud point, moisture content, viscosity – meets ISO standard.
Penulis: Bambang Dwi Argo,
Gunomo Djoyowasito, Rini Yulianingsih
Kode Jurnal: jptmesindd100177
