Removing copper

Discussion in 'Forum Comments, Suggestions & Help' started by Cheryl, Aug 10, 2018.

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  1. Cheryl

    Cheryl Junior

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    Ok, I used copper tubing to remove the Sulfer smell from my skeeter pee.....It has finally fermented down to dry. On my last question, someone was concerned with high concentrations of copper leaching into wine. Is there a concern or should I continue. The copper was in and out of the wine for no longer than a total of 26 hours
     
  2. Johnd

    Johnd Large Member Supporting Member

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    You should be concerned, 26 hours is a long time for a piece of copper in an acidic solution. There are products (Reduless for one) that administer appropriate doses to remove H2S without OD’ing on copper.
     
  3. Cheryl

    Cheryl Junior

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    Ok, so how do I get it out?
     
  4. GreenEnvy22

    GreenEnvy22 Senior Member

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    I'd suggest you send a sample of your wine to a lab to find out how much copper is in it. Then you'll know if you're in trouble or not.
    Some universities offer this service, otherwise there are wine labs you can send to online.
     
  5. Cheryl

    Cheryl Junior

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    Thank you, I might just dump it
     
  6. NorCal

    NorCal Super Moderator Super Moderator

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    Dump it
     
  7. Shayne Edwards

    Shayne Edwards Senior Member

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    Hi Cheryl, Glad to see you went chasing advice, I did my reading because 2 batches of Citrus wine produced Hydrogen Sulphide smells. My understanding of what I read is if you are uncertain of H2S being present then draw off a sample and drop in a small piece of copper. Shake it up and check next day, if off smell has diminished then do bench testing with copper sulphide to determine correct dosage amounts, add to wine then treat with betonaise ? Clay thingy. I got as far as doing the rough test and then backed off because of the chance of copper poisoning.
    Reading the thread here lead me to the Reduless product which looks good and I will order some in the hope of saving a third batch.
     
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  8. Cheryl

    Cheryl Junior

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    Already used copper pipe....it did a great job of getting rid of Sulfer smell, the question now is have I created a toxic cess pool. I can add bentonite, I can filter thru whole house filter or even britta. Don't want to kill anyone with copper overload.
     
  9. Shayne Edwards

    Shayne Edwards Senior Member

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    In all honesty Cheryl, I think you were given really good advice around dumping it and starting over. There are some informative videos on you tube around removing Hydrogen Sulphide from wine, some go into more depth than the others, what I took away from it was it can be dangerous without strict controls around the process.
    By using the copper pipe as the main treatment it would seem to me that without lab testing you have no way of knowing what level of copper in solution you have even after using bentonite and therefore risk poisoning someone.
    It might be better to follow the advice and dump it, just to be safe. The real trick then will be work out how to make the skeeter pee without stressing the wee yeasties so much. I’m going to have another go in around two months time and hopefully this time mine works out too.
     
  10. Cheryl

    Cheryl Junior

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  11. Cheryl

    Cheryl Junior

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    I think next time I will use fresh yeast instead of lees, that should solve the problem. Thank for your input
     
  12. garymc

    garymc Senior Member

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    I've used copper tubing for that purpose. I stick it in the must, stir for about as long as it take to read this and pull it out. Like 5 seconds. I'm wondering how you came to 26 hours?
     
  13. NorCal

    NorCal Super Moderator Super Moderator

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    If the odor goes away, you know you used enough. But how do you know if you used too much, even in 5 seconds?

    The proper way is to set up bench trials with precisely measured amount of wine and then adding precisely measured copper solution. You then find the point where the smell goes away; thus the copper is precipitating out with the sulfur and and not adding more copper than necessary, which would remain in the wine.
     
  14. Cheryl

    Cheryl Junior

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    There was not a time listed in the info I read. I put it in for a day and then removed it. Wine has been dumped.
     
  15. Shayne Edwards

    Shayne Edwards Senior Member

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    Good luck on the next batch mate, I hope one of us gets it right next time. Please keep us posted, aye?
    I finally sourced yeast energiser in Australia, so I hope adding this to the nutrient and stirring the must to add oxygen in a proper manner will get my next batch over the line with no H2S. Fingers crossed for the both of us.
     

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