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Biodiesel => Chemistry and process => Topic started by: Tony on September 17, 2014, 08:41:54 PM

Title: New to KOH
Post by: Tony on September 17, 2014, 08:41:54 PM
Trying KOH for the first time soon - any tips on what to expect?

It's 90% pure so I'll be compensating for that and scaling the quantity for 7g vs 5g litre base.

I understand KOH soaps take longer to settle out too?

Looking forward to liquid glyc and trying it on my new liquid pumped atomising burner nozzle, this thing will be like a flamethrower :)

£40 for 25kg vs £20 for NaOH it'd better be good ;)
Title: Re: New to KOH
Post by: K.H on September 17, 2014, 09:37:17 PM
My advice would bet to get some ASM instead  :)
Title: Re: New to KOH
Post by: nigelb on September 17, 2014, 09:55:09 PM
Trying KOH for the first time soon - any tips on what to expect?

It's 90% pure so I'll be compensating for that and scaling the quantity for 7g vs 5g litre base.

I understand KOH soaps take longer to settle out too?

Looking forward to liquid glyc and trying it on my new liquid pumped atomising burner nozzle, this thing will be like a flamethrower :)

£40 for 25kg vs £20 for NaOH it'd better be good ;)

£40...he was only going to charge £35 at the BBB!
Title: Re: New to KOH
Post by: Tony on September 17, 2014, 10:49:07 PM
Trying KOH for the first time soon - any tips on what to expect?

It's 90% pure so I'll be compensating for that and scaling the quantity for 7g vs 5g litre base.

I understand KOH soaps take longer to settle out too?

Looking forward to liquid glyc and trying it on my new liquid pumped atomising burner nozzle, this thing will be like a flamethrower :)

£40 for 25kg vs £20 for NaOH it'd better be good ;)

£40...he was only going to charge £35 at the BBB!

I guess prices vary - it's less than what Trinity are charging anyway.
Title: Re: New to KOH
Post by: Tony on September 19, 2014, 09:14:07 PM
Any tips on KOH soap settling anyone?  How much longer than NaOH?
Title: Re: New to KOH
Post by: oakwoodtv on September 19, 2014, 09:58:12 PM
Any tips on KOH soap settling anyone?  How much longer than NaOH?


Only used KOH once soap hadn't dropped a week later had to filter the lot threw 
j cloths only use sodium now.   
Title: Re: New to KOH
Post by: Jonzeyboy43 on September 19, 2014, 11:17:45 PM
2-3weeks in cold weather
Title: Re: New to KOH
Post by: julianf on September 19, 2014, 11:27:05 PM
Ive used koh, but not paid attention (sorry).

One thing that i was doing (before i ran out) which worked nicely, was to do s1 with cheap and brutal naoh, and then s2 with koh, resulting in clean, dry, liquid glycerol for the next batch. 

When i next buy some koh, ill do the same again.
Title: Re: New to KOH
Post by: Tony on September 28, 2014, 09:48:32 PM
Not got quite as far as using KOH yet but I a moment of boredom thinking about burning liquid fuels did lead to this ;)

(https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-xfa1/t31.0-8/10714420_10152793160978169_1134372464417582836_o.jpg)

That should sort out the shed spiders ;)