[Digestion] Environmentalists Anti-AD Issues

[Duncan Martin]

Whoops: I didn't see the other replies before responding!

So some folk do add arsenic to chicken feed! Or did, in the past. Which
illustrates another common problem with scare stories: they can be based on
very dated information

But my core point stands: AD cannot add it - and, as Paul says, digestion
might immobilize it.

Duncan



On 16 June 2011 13:14, Duncan Martin <duncanjmartin at gmail.com> wrote:

> I guess the rule is arsenic in, arsenic out.
>
> In other words, digestate can't contain any more arsenic than the raw
> chicken manure, so AD cannot make the problem any worse - if it exists at
> all. The concn might be higher, because the volume is less - but that's a
> red herring.
>
> The best approach to these scaremongers is to ask the source of their info
> - then evaluate it critically. Often it's just internet gossip.
>
> And even if the info is sound, it might well be specific to a particular
> farm with odd local conditions or feed sources - or perhaps a specific
> medication added to the feed. I'm no expert on chickens but arsenic (at
> above trace background levels) doesn't sound like a likely feed additive.
> Would the chickens be fit to eat?
>
> Duncan J Martin PhD
> Clouhgjordan Ecovillage
> Ireland
>
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> On 15 June 2011 14:11, Steven Bolgiano <steven at planetfound.com> wrote:
>
>> Hi Group,
>> I overheard one of our more local strident activists, when asked about AD
>> for poultry comment that the by-product compost from poultry digesters
>> contained significant amounts of arsenic.
>>
>> Can anyone comment on this or other known or potential anti-AD
>> Environmentalist issues. Here on the "Delmarva" peninsula over-application
>> of raw chicken manure onto the farm fields, and the subsequent runoff into
>> our abundance of estuaries and bays is a big issue. Our goal of introducing
>> absolute containment with solar heated bladder/ batch systems and a more
>> environmentally acceptable compost byproduct .... is supposed to attract a
>> positive response from activists.
>>
>> Comments, Information, Suggestions?
>>
>> Thanks!
>> Steven
>>
>> --
>> Steven Bolgiano
>> Executive Director
>> Planet Foundation Ltd.
>> 443.235.1344
>>
>>
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>>
>>
>
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