Tuesday, June 2, 2009

Prepare For The Experiment

Author: Hong Ting (Sam) Chiu

The AAS training is schedule to be tomorrow, and we didn't have any training session today. Therefore, Duncan and I switched the "learning" gear to the "working" one. We started to prepare as many necessaries as possible for the batch experiment.

Adsorbent was definitely on the top of the list. We ground the granular ferric hydroxide (GFH) with the mortar and pestle and sieved it to make sure the product is less than 63 micron. It took us a long while to grind the GFH down to the required size. We repeated the grinding and sieving process for numerous times. But, at the end, we did get some good GFH at the end.

The coarse granular ferric hydroxide.

Gotta keep grinding.

A nice sieve shaker.

Ground product.

After that, we chose to prepare the bottles for the closed batch systems. We need to take samples from these bottles; it yet has to be closed system. Therefore, we needed to have a hole on top of the cover, which can put a tubed stopper thru. Some of them didn't have the holes, so we went and drilled some holes.

Drilled holes.

Lastly, we measured the solute for all 24 bottles and prepared the 0.1M hydrochloric acid and 0.1M sodium hydroxide for pH fixation.

All the chemical we prepared today.

All of these probably sound quite easy; however, it is not the case when we don't know where the equipment/chemical is around. We know the basic equipments storage; however, it often need something that is not on the self. We have to bother the lab staff and they kindly show us where to get the stuff. I hope we will learn our way around the lab soon and get things done.

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