[Gasification] Fw: mycoremediation of tarry water

[stuart mather]

From: stuart mather <kneebraceboy at yahoo.com.au>
To: gasification at lists.bioenergylists.org
Sent: Sunday, 3 February 2013 9:52 PM
Subject: Re: mycoremediation of tarry water
 

Thanks Doug,
So maybe Kevin's gasifier correspondent was just missing the point by claiming that 'vegetation grew as well arounf the tar pond as anywhere else. It was still a toxic nightmare -just a lush green toxic nightmare.
Tom, if you're reading this, any chance of explaining what you meant by saying that one option was to just generate clean gas without tars. I thought Biomass gasification always produces tars in the gas, Which tnen have to be filtered out somehow.
Stuart.


________________________________
 From: doug.williams <Doug.Williams at orcon.net.nz>
To: stuart mather <kneebraceboy at yahoo.com.au>; Discussion of biomass pyrolysis and gasification <gasification at lists.bioenergylists.org>; Kevin C <kchisholm at ca.inter.net> 
Sent: Sunday, 3 February 2013 2:52 PM
Subject: Re: mycoremediation of tarry water
 

 
Hi Stuart,

In reply to Kevin you 
ask:

So I wonder why there seems to be a general consensus that 
dumping tarry water in a pond amounts to environmental vandalism. 
 
Like gasifiers, unless you are specific as 
to the process from which the condensate originates, it's like asking 
about how long is a piece of string. Certainly not all condensates are toxic 
black liquor, even if black, but some have benzene and other cacogenic 
compounds which can permeate into the ground water. Some condensate does 
kill plants, and I have made that stuff at times, in the past 36 years or so 
during development projects ):-(
 
Not saying your gasifier correspondent was making 
it up. 
 
Some of us have been around long enough to 
have seen these sites, some 50-70 years old, where crude wood gasifiers once 
powered irrigation schemes. The tar lakes are as toxic today as when they 
formed, and the phenolic compounds leach to the run-offs in the wet 
season.
 
But you would think the President of Myanmar would 
have better things to do than declare black water gasification leach ponds toxic 
sites  Military juntas aren't well known for their environmental awareness. 
 
Many ponds and paddy fields double as fish 
farms in Asia, and fish is an important commodity in rural communities. The 
fact that it has seen as an issue by those living there, should be enough 
for us who promote this technology, to support these environmental 
issues.
 
So why the concern about tar ponds 
people?
 
People desperate for electrical power in 
poor developing countries, are not aware or interested in how the power is made, 
or what the operator does with his cooling ponds. The stink usually is enough to 
warn you about these issues, but people including yourself, whom I assume 
is well educated, need to be better informed of environmental issues regarding 
condensate.  We wave a red flag like the man walking in front of the first 
Cars, creates awareness that a dangerous change in water use is in progress, and 
responsible management is required. Water scrubbers draws our attention calling 
for close scrutiny. No more, no less, hence, these interesting exchanges taking 
place on this Forum.
 
Hope this may be of interest to 
you.
 
Doug Williams,
Fluidyne 
Gasification.
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