What have we done and learnt:
30/05 Monday: We washed the unwashed biodiesel from Friday. After several attempts of washing, we managed to remove part of the unwanted contents by draining it off. However, the biodiesel still remained slightly cloudly. It might be due to the fact that we left the unwashed biodiesel over the weekend and because not all sodium methoxide was transferred into the reactor for reaction.
01/06 Wednesday: We did level marking and displacement test using water. In addition, we also fitted the rubber fittings at the corners of the bottom drip tray to seal off the sharp ends. Furthermore, we also washed the chemical bottles, washed the reactor and did housekeeping to prepare for the experiment on Friday.
02/06 Thursday: We met up with Mr Andrew Kon in the morning to report our progress such as what we have bought and the modifications we have done to the workplace. The reciprocating pump arrived yesterday and we checked it out with Mr Andrew Kon today. One task we received was to find more information regarding the purchasing of a ultrasonic water bath to promote better mixing of the sodium hydroxide pellets and methanol.
03/06 Friday: We ran the experiment with the aid of our senior Sin Kim. We ran the experiment without the use of the reciprocating pump because it was not calibrated yet. The ratio 5 : 1 was used for methanol against SOV. The unwashed biodiesel was washed 5 times to ensure a clearer biodiesel would form. Our first biodiesel sample was obtained and the colour was good. Some points we learnt to take note today was the height of the bubbler to be placed and amount of water to be added for washing. Due to the fact that the reactor is not tall enough for more water to be added for washing, we decided to do more number of washes to compensate for the low volume of water.
01/06 Wednesday: We did level marking and displacement test using water. In addition, we also fitted the rubber fittings at the corners of the bottom drip tray to seal off the sharp ends. Furthermore, we also washed the chemical bottles, washed the reactor and did housekeeping to prepare for the experiment on Friday.
02/06 Thursday: We met up with Mr Andrew Kon in the morning to report our progress such as what we have bought and the modifications we have done to the workplace. The reciprocating pump arrived yesterday and we checked it out with Mr Andrew Kon today. One task we received was to find more information regarding the purchasing of a ultrasonic water bath to promote better mixing of the sodium hydroxide pellets and methanol.
03/06 Friday: We ran the experiment with the aid of our senior Sin Kim. We ran the experiment without the use of the reciprocating pump because it was not calibrated yet. The ratio 5 : 1 was used for methanol against SOV. The unwashed biodiesel was washed 5 times to ensure a clearer biodiesel would form. Our first biodiesel sample was obtained and the colour was good. Some points we learnt to take note today was the height of the bubbler to be placed and amount of water to be added for washing. Due to the fact that the reactor is not tall enough for more water to be added for washing, we decided to do more number of washes to compensate for the low volume of water.
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