akre
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Sodium sulfate electrolyzer for making sulfuric acid
I know sulfuric acid production has been covered in some other threads before. Anyway I'm going to try building a sodium sulfate electrolyzer.
I was thinking of a design with three PP tubes. Two 50mm tubes inserted into a 110mm tube. The smaller tubes are going to be half the length of the
larger tube. Above the tubes extending upwards I was thinking of filling the space with some kind of ion conducting material, like concrete or plaster
with two holes extending form the two tubes below. The tubes would be filled with carbon.
Does anyone have any experience with plaster or concrete as an ion membrane?
I'll post a drawing later showing the design I was thinking of.
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12AX7
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I don't know about plaster but concrete is specifically rated as "non sulfate resistant". The masonry used in smoke stacks uses sodium silicate based
mortar for this reason.
Tim
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akre
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I've made a first drawing of the electrolyzer. The design is changed to only use two tubes, the centre tube serving as the anode compartment. The
reddish tube at the top is the ion membrane, the green cathode is made of stainless steel.
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BalancedWorld
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Why don't you use a car battery.?
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akre
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Use a car battery? For what? Recovering the acid?
I still need some ideas for making the diaphragm. Does anyone have some ideas for testing the performance of such a diaphragm?
[Edited on 4-2-2006 by akre]
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BalancedWorld
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"Use a car battery? For what? Recovering the acid?"
A car battery has a diaphragm designed for HSO4, the case is resistant to the acid, it has electrodes inplace.
Whats missing?
Cut around were the lid and base come together. Make sure it can fit back together nicely. Replace the stuff inside the plastic looking bag with
LeadSO4 and water.
When chargeing you should get 2LeadOH and H2SO4.
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