[USCC] Contaminated park brings end to community garden plan

Thu May 7 00:18:40 CDT 2009

I posted this topic to our student forum and received this info from  
one of our students:

mycoremediation...........has many solutions to pulling up heavy  
metals.......including lead  which can render this soil safe for  
growing food.  if you want a list of mushrooms which will do this let  
me know and i will send them..  mushrooms will definitely work for  
this project....with very little expense if resources are available  
from the community locally.   and yes the mushrooms grown will have to  
be disposed of properly........peace and thank you for your outreach.
joshua.                                                          
mycelium running   page 102  has an extensive list  including lists  
for hydrocarbons on different pages.   i would be happy to explain the  
process as well as i am very excited about the subject.
Joshua
eternalovespirit at gmail.com

Cheers,
Heide Hermary
Gaia College
http://www.gaiacollege.ca

On 4-May-09, at 8:43 AM, Chaney, Rufus wrote:

> Dear Barbara Emeneau:
>
> For the record, there is no valid phytoremediation method for Pb. No
> plant takes up enough Pb to remove a little per year unless you add  
> EDTA
> to the soil. The cost of the EDTA was >$30,000/A per year. And the
> addition of EDTA caused leaching of Pb and other contaminants to
> groundwater. No state will permit a phytoremediation project for Pb
> using chelating agents such as EDTA.
>
> Pb phytoremediation was a bad idea. No plant naturally accumulates
> really high levels of Pb from soils, only from solutions that are
> deficient in phosphate and sulfate so that the Pb stays soluble. If a
> plant has enough phosphate to grow a good yield, the Pb is trapped in
> the roots as a Pb-phosphate compound.
>
> Even though there are recent papers in the peer-reviewed literature on
> this topic, if you read carefully you will see that they used the no
> phosphate in nutrient solution trick, or failed to understand that a
> plant needs to accumulate toward 1% metal or higher to give high  
> annual
> removals.
>
> I am the person who invented the idea of phytoextraction of soil  
> metals.
> We developed technologies to phytoextract Ni, Co, Cd and Zn using true
> hyperaccumulator plants. Our improved cultivars of Alyssum murale
> accumulate over 3% Ni in their dry shoots at flowering, and are used  
> in
> commercial phytoextraction and phytoremediation.
>
> Regards,
>
> Rufus Chaney
> USDA-Agricultural Research Service
> Beltsville, MD
>
> -----Original Message-----
> From: compost-bounces at mailman.cloudnet.com
> [mailto:compost-bounces at mailman.cloudnet.com] On Behalf Of
> apismno at aol.com
> Sent: Friday, May 01, 2009 11:07 AM
> To: compost at mailman.cloudnet.com
> Subject: Re: [USCC] Contaminated park brings end to community garden
> plan
>
> There are probably phytoremediation choices that can be used for the
> lead.? The hydrocarbons might be biodegradable and so getting the pH
> ,N,P,K, etc into the ranges that promote microbial life might work.?
> Then just sow a crop that can be easily checked for Pb.? It could take
> several years, but the lead is the more difficult problem to  
> remediate,
> yet probably doable for reasonable cost.
>
> It could become a learning center until the lead is diminished.
>
> Barbara Emeneau
>
>
> -----Original Message-----
> From: IMI 360 <focus at netidea.com>
> To: U.S. Composting Council listserve <compost at mailman.cloudnet.com>
> Sent: Thu, 30 Apr 2009 4:05 pm
> Subject: [USCC] Contaminated park brings end to community garden plan
>
>
>
> Any info out there about organic remediation of contaminated soil?
>
> Contaminated park brings end to community garden plan
>
> Stanley Avenue Park, in Ottawa's New Edinburgh neighbourhood, was
> fenced off last week after soil tests showed high levels of lead and
> hydrocarbons.
>
> According to the city, the waiting lists for garden plots in most of
> Ottawa's neighbourhoods are two years long.
>
> full story...http://www.cbc.ca/canada/ottawa/story/2009/04/30/
> ottawa-090430-soil-contamination.html
>
>
> Paul Hughes
> Chair, Calgary Food Policy Council
> 2011 New Growing Spaces in Calgary by 2011
> CLUCK: Calgary Liberated Urban Chicken Klub
> http://twitter.com/GardenCommunity
> c403.383.3420
>
> P    Please consider the environment before printing this email
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> The Largest Conference & Exhibition in North America for the  
> Composting, Wood Waste, & Organics Recycling Industry. The Most  
> Comprehensive Program of Training Courses, Educational & Technical  
> Presentations, and Facility Tours & "Live" Equipment Demonstrations  
> at the Disney/Reedy Creek Composting Facility. Conference Highlights  
> & Program, Registration forms, Exhibitor Information and Sponsorship  
> Opportunities available at the USCC website  
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> This list is a service provided by the US Composting Council (USCC).
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