[USCC] Contaminated park brings end to community gardenplan
Chaney, Rufus
Rufus.Chaney at ARS.USDA.GOV
Mon May 11 13:15:48 CDT 2009
David:
I partially responded to this in an earlier post this morning, but want
to give some specific responses to you note to clarify the questions you
raised.
Phytoextraction can work. But the crop needs to have high annual removal
of the contaminant for the process to be useful. If the crop doesn't
accumulate high enough concentration, or has such a poor yield, the
annual removal can't remove enough to support a technology. As I noted,
1% of Pb in shoots is widely agreed to represent a level that with
normal forage yields would remove enough Pb to clean up a soil over
decades. 10 t/ha of biomass times 10,000 mg Pb/kg (or 10,000 g Pb/t
biomass = 10 kg Pb/t biomass) = 100 kg Pb removed per crop. The soil
that required phytoextraction would contain at least 500 mg Pb/kg, or
1000 kg/ha, so a number of years would be required to remove Pb even if
the crop accumulated 1% Pb in dry matter of harvestable shoots.
The only plants which accumulate 1% As (from contaminated soils) are
some ferns which are a little hard to grow, and do not tolerate winter
temperatures. They have been successfully used in commercial
phytoextraction of As.
The Ni hyperaccumulators we developed for commercial use can accumulate
2-3% Ni in shoots at harvest, with yields of 10-20 t/ha. Because Ni is a
high value metal, growing Ni would be a good business.
I have nothing against mushrooms. But the concentration of metals they
accumulate, coupled with annual harvestable biomass, does not make them
useful in phytoextraction. Imagine trying to purposely grow mushrooms on
field soils, or the soils contaminated by Pb beside a house. It just
doesn't work. How do you economically harvest mushrooms from field
soils? And the mushrooms would have to be destroyed or landfilled if
they did accumulate the toxic element from soil because there is no
market for biomass Pb or As.
Others had patented using EDTA addition to Pb contaminated soils to
dissolve the Pb and force the PbEDTA into the plants. But then didn't
talk about needing $30,000/ha worth of EDTA per crop to make it work.
And the EDTA caused Pb and other metals to leach toward groundwater. So
the method died and the company which held the patents went bankrupt.
And the scientists who got the patent stopped working on
phytoextraction. It was a long sad story. And many people have been
misled by the claims about Pb phytoextraction.
So, yes, I am saying that mushrooms do not accumulate enough Pb, or As,
or even Hg in their biomass to provide a useful phytoextraction
technology. Any practical technology has to produce enough harvestable
biomass yield with enough of the contaminant in that biomass, to remove
a significant fraction of the total level in the soil.
Regards,
Rufus Chaney
USDA-ARS
Beltsville, MD
-----Original Message-----
From: compost-bounces at mailman.cloudnet.com
[mailto:compost-bounces at mailman.cloudnet.com] On Behalf Of David
Goldstein
Sent: Monday, May 11, 2009 11:57 AM
To: Compost Discussion List
Subject: Re: [USCC] Contaminated park brings end to community gardenplan
Rufus,
Maybe mushrooms don't "accumulate really high levels" of lead (your post
from 5/4/09, 8:43 AM) or "accumulate.. much Pb" (your post from 5/7/09,
11:30 AM), but over time, couldn't their repeated growth effectively
reduce levels?
Your citation of the Chaney/Angle/Broadhurst research leads to
http://ag.udel.edu/soilchem/Chaney07JEQabs.pdf (abstract) and
http://ag.udel.edu/soilchem/Chaney07JEQ.pdf (the actual paper, in PDF),
saying Pb uptake worked well only on soils with low levels of phosphate
and sulfate, but this was in reference to the use of Indian mustard, not
mushrooms (page 1430, middle of the right column).
http://planet.wwu.edu/archives/2008/articles/winter/shroom-vacuum.php
says mushrooms do remove lead, as well as other soil contaminants. Am I
right to read into your posts that you aren't disputing the benefits of
phytoextraction, specifically mycoremediation (with mushrooms), for
other soil contaminants? For example, do you agree mushrooms remove
arsenic? You are just doubting the effectiveness of lead removal using
mushrooms, right? Even the paper you cited states, "Several elements
may provide economic phytomining potential with known plant species (Ni,
Co, Tl, Au)" (page 1432, middle of left column).
REgards,
D.G.
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
>
> _______________________________________
> Join us as the US Composting Council's 18th Annual Conference & Trade
> Show,
> January 24-27, 2010 at the Wyndham Orlando Resort, FL. 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 www.compostingcouncil.org or call the
> USCC
> at
> 631.737.4931
>
david.goldstein at ventura.org
Ventura County PWA, W&S, IWMD
800 S. Victoria Ave. #1650
Ventura, CA 93009-1650
805/658-4312 www.wasteless.org
>>> "Heide Hermary" <heidehermary at pacificcoast.net> 05/08/2009 9:02 PM
>>>
Here is the list provided by Joshua,taken from "Mycelium Running" by
Paul Stamets:
Numbers represent the bioaccumulation factor which indicates how many
times more concentrated the metal is compared to the background level.
Note: mushrooms listed without accumulation number have no research to
tell us the bioaccumulation factor, just that they do concentrate lead.
Factors may vary between samples, this is only to be used for further
comparison or further research.
Agaricus bitorquis 23X
Agaricus campestris 10X
Boletus edulis X
Chlorophyllum rachodes X
Lycoperdon perlatum
Morchella spp 70-100X
Morchella atretomentosa X
Suillus tomentosus 67X
Obviously many variables can affect the mushroom's ability to
hyperaccumulate toxins, and results could vary substantially between
sites. I suggest that anyone wanting more information read the book,
or contact Paul Stamets directly (www.fungiperfecti.com). This is a
new field of research and practice.
Cheers, Heide
Heide Hermary
Gaia College
http://www.gaiacollege.ca
On 7-May-09, at 11:30 AM, Chaney, Rufus wrote:
> Dear USCC colleagues:
>
> Despite the statement below, I know of no mushroom that accumulates
> much
> Pb. And the annual yield of mushrooms, and growth conditions, do not
> lend themselves to removal of Pb from contaminated soils. I can
> provide
> extensive literature to back up my earlier statement, as most you
> would
> expect of me. And my review paper in JEQ covered the important details
> of why Pb phytoextraction is not real: high cost; no hyperaccumulator;
> can't use chelators needed to get much Pb uptake; phosphate needed to
> support plant growth inhibits Pb movement to shoots.
>
> Chaney, R.L., J.S. Angle, C.L. Broadhurst, C.A. Peters, R.V. Tappero
> and
> D.L. Sparks. 2007. Improved understanding of hyperaccumulation yields
> commercial phytoextraction and phytomining technologies. J. Environ.
> Qual. 36:1429-1443.
>
> Regards,
>
> Rufus Chaney
> USDA-ARS-EMBUL
> Beltsville, MD
>
>
> -----Original Message-----
> From: compost-bounces at mailman.cloudnet.com
> [mailto:compost-bounces at mailman.cloudnet.com] On Behalf Of Heide
> Hermary
> Sent: Thursday, May 07, 2009 1:19 AM
> To: Compost Discussion List
> Subject: Re: [USCC] Contaminated park brings end to community garden
> plan
>
> 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
>>
>> _______________________________________
>> Join us as the US Composting Council's 18th Annual Conference & Trade
>> Show,
>> January 24-27, 2010 at the Wyndham Orlando Resort, FL. 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 www.compostingcouncil.org or call the
>> USCC
>> at
>> 631.737.4931
>>
>
________________________________________________________________________
>> _____
>> Compost maillist - compost at mailman.cloudnet.com
>> http://mailman.cloudnet.com/mailman/listinfo/compost
>> _______________________________________
>> This list is a service provided by the US Composting Council (USCC).
>> (c) Copyright 2004 United States Composting Council - All rights
>> reserved
>>
>> Opinions expressed do not necessarily represent the USCC, the
>> Foundation, or the
>> Board of Directors.
>>
>> Non-members of USCC are encouraged to join the Council through its
>> website at:
>> http://www.compostingcouncil.org/membership.cfm
>>
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>> _______________________________________
>> Join us as the US Composting Council's 18th Annual Conference & Trade
>> Show, January 24-27, 2010 at the Wyndham Orlando Resort, FL. 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 www.compostingcouncil.org or call the USCC at
>> 631.737.4931
>>
>
________________________________________________________________________
>> _____
>> Compost maillist - compost at mailman.cloudnet.com
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>> _______________________________________
>> This list is a service provided by the US Composting Council (USCC).
>> (c) Copyright 2004 United States Composting Council - All rights
>> reserved
>>
>> Opinions expressed do not necessarily represent the USCC, the
>> Foundation, or the Board of Directors.
>>
>> Non-members of USCC are encouraged to join the Council through its
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>> Join us as the US Composting Council's 18th Annual Conference &
>> Trade Show, January 24-27, 2010 at the Wyndham Orlando Resort, FL.
>> 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
>> www.compostingcouncil.org or call the USCC at 631.737.4931
>>
>
________________________________________________________________________
> _____
>> Compost maillist - compost at mailman.cloudnet.com
>> http://mailman.cloudnet.com/mailman/listinfo/compost
>> _______________________________________
>> This list is a service provided by the US Composting Council (USCC).
>> (c) Copyright 2004 United States Composting Council - All rights
>> reserved
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>> Opinions expressed do not necessarily represent the USCC, the
>> Foundation, or the Board of Directors.
>>
>> Non-members of USCC are encouraged to join the Council through its
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> _______________________________________
> Join us as the US Composting Council's 18th Annual Conference & Trade
> Show, January 24-27, 2010 at the Wyndham Orlando Resort, FL. 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 www.compostingcouncil.org or call the USCC at
> 631.737.4931
>
________________________________________________________________________
> _____
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> _______________________________________
> This list is a service provided by the US Composting Council (USCC).
> (c) Copyright 2004 United States Composting Council - All rights
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>
> Opinions expressed do not necessarily represent the USCC, the
> Foundation, or the Board of Directors.
>
> Non-members of USCC are encouraged to join the Council through its
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> Join us as the US Composting Council's 18th Annual Conference &
> Trade Show, January 24-27, 2010 at the Wyndham Orlando Resort, FL.
> 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
> www.compostingcouncil.org or call the USCC at 631.737.4931
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________________________________________________________________________
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> _______________________________________
> This list is a service provided by the US Composting Council (USCC).
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>
> Opinions expressed do not necessarily represent the USCC, the
> Foundation, or the Board of Directors.
>
> Non-members of USCC are encouraged to join the Council through its
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Join us as the US Composting Council's 18th Annual Conference & Trade
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Tours & "Live" Equipment Demonstrations at the Disney/Reedy Creek
Composting Facility. Conference Highlights & Program, Registration
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Join us as the US Composting Council's 18th Annual Conference & Trade
Show, January 24-27, 2010 at the Wyndham Orlando Resort, FL. 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 www.compostingcouncil.org or call the USCC at
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_____
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This list is a service provided by the US Composting Council (USCC).
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