So, after one month of programming and prototyping, here it is the first batch
I have noticed some points that differ a little from the articles i have seen, so here we go.
For this first batch, i used the same values calculated is this excell table
https://www.cgcsforum.org/index.php?topic=4014.0 (thanks Dean for this tool)
So, i pour 3 liters of DW, added 3 ml of 1mol anydrous sodium carbonate and started heating.
After the liquid heats a bit, i have added 1.7g of Maltodextrin and mixed with a spoon. At this point, the liquid becomes very cloudy, and after it becomes clear again, i have some foam floating at the top, so i removed it with the spoon.
When my controller detected 50ºC, the reaction have started.
After 5 minutes, i have verified it with the laser, and noticed a tyndall effect on the liquid (at this point with ~1 ppm), so i think maybe this is because of the malto, that for nome reason was not fully solved.
After 15 minutes, the water started to turn yellow, so i was confident in the process.
I have configured the controller to run with 15mA, and it have done it for the most part of the process, but at the final half hour, even at around 42 volts (max voltage from my controller), the current of the circuit have become lower, so i cleaned the tip of the electrodes, but with no effect on the current.
I was using 2 relays to switch the polarity of the circuit every 2 minutes, because i have seen in a youtube video that this polarity switching could prevent the electrodes from darkening, but in fact it dont make much difference, it becomes dark anyways (so i have discarted my continous production idea :/ )
After about 2 hours, the 40 ppm concentration have been reached (the controller reads the current of the circuit constantly, so i think my calculations of PPM are accurate).
After its done, i removed the electrodes, mantained the heat and added a solution with 1.5g of Gelatin and mixed with a spoon for about 2 minutes.
Inspecting the final results, i noticed it turns white under strong light (celular flash), the tyndall effect is the same of the beggining, and it looks just a little bit turvy ant with a stronger collor compared with the Color Samples from Kephra (
https://www.cgcsforum.org/index.php?topic=3713.0)
I have not added a stirrer yet, this tyndall effect can be ralated in some way with this fact? And im using a very strong laser pointer (50 km range), can this be related too?
Im using a 0.001g precision balance from AliExpress, so i think the amount of reagents are very accurate.
The voltage between the silver bars remained above 14v all the time, the spacing im using is ~5cm and both electrodes have almost the same surface area (about 1.5 cm into the water).
I have noticed no precipitation on the bottom of the becker, and just tiny bubbles have appeared on the electrodes, no smoking.
So, for the next batch, i will improve:
- Remove the polarity switching and replace the negative electrode with a copper wire
- Add a constant stirrer during all the process
- Add the gelatin at the beggining of the process, not at the end
Advices are welcome, and as always, thanks Kephra for this amazing work!
Heres some pictures of the process