[Gasification] Characterization of waste water from biomass gasification equipment: A case-study from Cambodia

[Paul Anderson]

Dear Gasification Listserv and Biochar Listserv,

The excellent comment by James Joyce (below) did not reach the 
Gasification readers.   It only went to the Biochar readers. Interesting 
for two reasons (overly simplified, but to make a point):

1.  Gasification for power (engines) is what causes the problem of 
contaminated waste water, but those readers did not see the "solution 
offered".  THEY are the people who could test and evaluate the solution.

2.  Biochar production (for agriculture and carbon sequestration) has 
been proposed to make a filter-char that is to be burned, which is what 
biochar production is trying not to do.   That is, char as filter for 
wastes made by trying to burn all of the biomass to ash.

Those of us who are subscribed to both lists will see the full 
discussion.   Let's hope that this is a functional solution.

(Of course it is better if the nasty contents in the waste water were 
not created in the process of making the electro-mechanical power.)

To James Joyce, I say "Thanks."

Paul Anderson

James Joyce wrote:
>
> Seems to me that the smallest foot print treatment would be to filter 
> the water through char, gravity dewater and then dry the char to less 
> than 30% moisture, then combust it at over 1000 deg C in a chamber 
> that maintains a 2 second residence time for the gases released from 
> the combustion. That will yield useful heat while destroying the 
> recalcitrant hydrocarbons. In locations with weather that does not 
> make solar or even bed drying viable, the process will generate more 
> than enough heat to run a heated air drier.
>
> After the past mess if dealt with, such a process would probably only 
> need to be run for a day a week to treat scrubber water from storage 
> tanks (i.e. never put out to lagoons or open storage where it is of 
> great risk to the environment).
>
> The equipment required to do that is far less complicated than the 
> gasifiers themselves.
>
> Regards,
>
> James                              Posted by: James Joyce 
> <james at jamesjoyce.com.au>
>

Doc  /  Dr TLUD  /  Prof. Paul S. Anderson, PhD
Email:  psanders at ilstu.edu
Skype:   paultlud    Phone: +1-309-452-7072
Website:  www.drtlud.com

On 1/7/2016 10:45 AM, linvent at aol.com wrote:
> Tom,
> Thanks for the compliment and appreciation. There were hundreds of 
> "pot" trials using a wide variety of treatments, extractions, etc. 
> before the key process was accidentally stumbled on. Other processes 
> have evolved and include the ability to take sea-water to potable with 
> a fraction of the cost of distillation or RO.
> Assumptions about the tar properties including specific gravity can be 
> quite misleading.
> One aspect of how to deal with the produced water from a gasifier is 
> to give it the right type of compound definition and once that is 
> reached, it makes it much easier to treat it.
> Sincerely,
> Leland T. "Tom" Taylor
> Thermogenics Inc.
>
> _____________________________________________ Gasification mailing 
> list to Send a Message to the list, use the email address 
> Gasification at bioenergylists.org to UNSUBSCRIBE or Change your List 
> Settings use the web page 
> http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org 
> for more Gasifiers, News and Information see our web site: 
> http://gasifiers.bioenergylists.org/ 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/gasification_lists.bioenergylists.org/attachments/20160116/1d732e41/attachment.html>