Titrated Acid water wash.

[Julian]

The last time I checked it it had changed from orange juice to a nice dark bio looking liquid.

Are you saying that it was orange juice when it went into the settling drum after 90 mins drying?

[Jamesrl]

The last time I checked it it had changed from orange juice to a nice dark bio looking liquid.

Are you saying that it was orange juice when it went into the settling drum after 90 mins drying?

It was still a little wet, not as orange juicey as a 5% prewash, just been out to check it it's really clear now.

[1958steveflying]

The last time I checked it it had changed from orange juice to a nice dark bio looking liquid.

Are you saying that it was orange juice when it went into the settling drum after 90 mins drying?

Jim is your Bio dark due to feedstock or demething at high temperatures and bubbling.. ie: oxidised maybe

[Jamesrl]

Jim is your Bio dark due to feedstock or demething at high temperatures and bubbling.. ie: oxidised maybe

Neither it's the storage tank, I took a sample and it light and crystal clear.

[Julian]

The last time I checked it it had changed from orange juice to a nice dark bio looking liquid.

Are you saying that it was orange juice when it went into the settling drum after 90 mins drying?

It was still a little wet, not as orange juicey as a 5% prewash, just been out to check it it's really clear now.

I'm surprised.  The last two batches which haven't turned to soap, have come out of the processor really clear, looks like it could go straight in the car.  I didn't pay much attention to how long it took, but I'd guess an hour under heat to around 85°C and probably another hour without heat down to about 50°C ish using only the venturi and condenser (compressors and aquarium pumps are banned until further notice), add Coldflow, pump out and no bubbling in the settling tank!

For how long did you settle the last wash?  I did 5 washes to get clear water.  On the last two washes, samples cleared from orange juice to cloudy in around a couple of hours.

[1958steveflying]

The last time I checked it it had changed from orange juice to a nice dark bio looking liquid.

Are you saying that it was orange juice when it went into the settling drum after 90 mins drying?

It was still a little wet, not as orange juicey as a 5% prewash, just been out to check it it's really clear now.

I'm surprised.  The last two batches which haven't turned to soap, have come out of the processor really clear, looks like it could go straight in the car.  I didn't pay much attention to how long it took, but I'd guess an hour under heat to around 85°C and probably another hour without heat down to about 50°C ish using only the venturi and condenser (compressors and aquarium pumps are banned until further notice), add Coldflow, pump out and no bubbling in the settling tank!

For how long did you settle the last wash?  I did 5 washes to get clear water.  On the last two washes, samples cleared from orange juice to cloudy in around a couple of hours.

How are you drying the air going into your venturi Julian ?

[Julian]

The last time I checked it it had changed from orange juice to a nice dark bio looking liquid.

Are you saying that it was orange juice when it went into the settling drum after 90 mins drying?

It was still a little wet, not as orange juicey as a 5% prewash, just been out to check it it's really clear now.

I'm surprised.  The last two batches which haven't turned to soap, have come out of the processor really clear, looks like it could go straight in the car.  I didn't pay much attention to how long it took, but I'd guess an hour under heat to around 85°C and probably another hour without heat down to about 50°C ish using only the venturi and condenser (compressors and aquarium pumps are banned until further notice), add Coldflow, pump out and no bubbling in the settling tank!

For how long did you settle the last wash?  I did 5 washes to get clear water.  On the last two washes, samples cleared from orange juice to cloudy in around a couple of hours.

How are you drying the air going into your venturi Julian ?

It's just circulated through the SHHE and condenser as per normal GL operation.

[1958steveflying]

Whats a SHHE   
  " https://www.google.co.uk/search?q=SHHE&oq=SHHE&aqs=chrome.0.57&sourceid=chrome&ie=UTF-8 "

[Julian]

What does Google know?  Try the wiki ...

http://www.biopowered.co.uk/wiki/Acronyms

and ...

http://www.biopowered.co.uk/wiki/Still_head_heat_exchanger

[1958steveflying]

What does Google know?  Try the wiki ...

http://www.biopowered.co.uk/wiki/Acronyms

and ...

http://www.biopowered.co.uk/wiki/Still_head_heat_exchanger

Oh I have one of them. 

[nigelb]

Got a theory about this... well here goes!

I wonder if the meth reduces with each wash rather than in just one wash, with the subsequent washes the meth ppms or % reduces.  When it gets to a critical low level it suddenly releases the greatest concentration of soaps. 

If this is true it would explain how you can get fairly clear discharge water on one wash and then the water on the next wash seems more cloudy.  I've seen this on the odd occasion with gradual mist washing, can't recall seeing it with pump washing though, so not sure how or if it's likely to be true with pump washing.  It's only a theory, no other evidence to suggest that it's true. 

I don't think you're too far from the truth there Nathan. No great shakes on your theory...that's how I've seen it since day one. The amount of methanol and soap in solution are directly related to each other when water washing. As the volume of methanol in solution gets less the more soap drops out until the eurika moment where the bio goes from an orange juice appearance to something that looks like proper bio. As I've said on many occacsions I can reach this point in approx 4 x 10lt washes without the need of adding chemicals in an attempt to speed things up.

I'll do some testing on this on my next batch...I'll soap test after each wash.

[nathanrobo]

Got a theory about this... well here goes!

I wonder if the meth reduces with each wash rather than in just one wash, with the subsequent washes the meth ppms or % reduces.  When it gets to a critical low level it suddenly releases the greatest concentration of soaps. 

If this is true it would explain how you can get fairly clear discharge water on one wash and then the water on the next wash seems more cloudy.  I've seen this on the odd occasion with gradual mist washing, can't recall seeing it with pump washing though, so not sure how or if it's likely to be true with pump washing.  It's only a theory, no other evidence to suggest that it's true. 

I don't think you're too far from the truth there Nathan. No great shakes on your theory...that's how I've seen it since day one. The amount of methanol and soap in solution are directly related to each other when water washing. As the volume of methanol in solution gets less the more soap drops out until the eurika moment where the bio goes from an orange juice appearance to something that looks like proper bio. As I've said on many occacsions I can reach this point in approx 4 x 10lt washes without the need of adding chemicals in an attempt to speed things up.

I'll do some testing on this on my next batch...I'll soap test after each wash.

Thanks Nige

B nice to see some data around this on soap... can this be correlated to meth % with meth tester?

[Head Womble]

So if this is correct, and I suspect it is, demething the bio before washing could reduce the amount of washes needed.

[nigelb]

I'm absolutely sure that a meth test on consequtive washes will show an incremental reduction everytime.

[1958steveflying]

Got a theory about this... well here goes!

I wonder if the meth reduces with each wash rather than in just one wash, with the subsequent washes the meth ppms or % reduces.  When it gets to a critical low level it suddenly releases the greatest concentration of soaps. 

If this is true it would explain how you can get fairly clear discharge water on one wash and then the water on the next wash seems more cloudy.  I've seen this on the odd occasion with gradual mist washing, can't recall seeing it with pump washing though, so not sure how or if it's likely to be true with pump washing.  It's only a theory, no other evidence to suggest that it's true. 

I don't think you're too far from the truth there Nathan. No great shakes on your theory...that's how I've seen it since day one. The amount of methanol and soap in solution are directly related to each other when water washing. As the volume of methanol in solution gets less the more soap drops out until the eurika moment where the bio goes from an orange juice appearance to something that looks like proper bio. As I've said on many occacsions I can reach this point in approx 4 x 10lt washes without the need of adding chemicals in an attempt to speed things up.

I'll do some testing on this on my next batch...I'll soap test after each wash.

Thanks Nige

B nice to see some data around this on soap... can this be correlated to meth % with meth tester?

It wont mean to much without it.