Dear Andrew
----- Original Message -----
From: "Andrew C. Parker" <[email protected]>
To: "Discussion of biomass cooking stoves" <[email protected]>
Sent: Friday, May 17, 2013 1:54 PM
Subject: Re: [Stoves] Fwd: Legacy Foundation: User filled in Contact Us form!
> Kevin,
>
> The cut flower industry uses prodigious amounts of insecticides,
> fungicides, herbicides, etc. I would imagine that the green waste from
> such an operation would not be healthy to feed to cattle or any other
> animal.
# The insecticides, fungicides, and herbicides could very well be the problem.
I don't know that it would be good to burn it either. Any ideas
> on how to deactivate (inexpensively) these chemicals so that the waste can
> be safely utilized for compost, fodder or fuel?
# Such "pesticides" are often chemicals that contain chlorine. Burning them
would produce a smoke containing dioxins. Such pesticides may block the
Composting process by killing the compost organisms.
# What about the possibility of
1: Air dry the green waste to about 15% moisture content
2: Gasify the dried biomass
3: Cool the gases to about 250 F to 300 F, to allow re-formation of dioxins.
4: Filter the gasifier gas output through a bed of char, to capture any
residual dioxins
# Output products could be as follows:
1: A clean and safe fuel gas
2: Some clean char, suitable for garden use
3: A Waste Stream of char, contaminated with dioxins that could be treated
further for dioxin destruction.
This would be a costly process, but at least it has the potential to eliminate
the Community health hazard.
Best wishes,
Kevin
>
>
> On Fri, 17 May 2013 09:19:09 -0600, Kevin <[email protected]> wrote:
>
>> Dear Richard
>>
>> What is in the "green waste" that "causes health problems to society"?
>>
>
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