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QUESTION: Phytoremediation of Leaded Soil, 26 Apr 2003,
New South Wales Australia I am currently studying my bachelor of construction management at the university of Newcastle, for part of my current assignment i have to identify a way of remediating lead contaminated soil. The solution needs to be innovative, cost and time efficient and environmentally friendly. I was wondering if you would be able to assist by providing some solutions to the problem. The method in one of your newsletters on using sunflowers is very interesting. could you please include some more information on this. Your help is greatly appreciated Thanks, Blake |
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| ANSWER: 26 Apr 2003 Dear Blake, sorry for the delay in responding but we are understaffed by volunteers, Have you finished the lead soil remediation assignment? We don't have any further info than at www.lead.org.au/lanv6n3/lan6n3-10.html on sunflowers but I've attached a relevant article from /aec.army.mil/prod/usaec/et/restor/insitu.htm on "Phytoremediation of Lead-contaminated Soil" by US Army Environmental Center and another from emboj.oupjournals.org/cgi/content/full/18/12/3325 entitled "Tolerance to toxic metals by a gene family of phytochelatin synthases from plants and yeast". But the most innovative way of remediating lead contaminated soil that I have heard of is with earthworms. I heard of this from Brett Pritchard of the Permaculture Assoc of Far West at Broken Hill NSW on ph 0880877992 but that was 7 years ago and I've heard nothing more. Brett's proposal was to use the dried carcasses and detritus from the worms as a laminated lining material in buildings requiring protection from radiation such as hospital and dental x-ray rooms. Vermitech Co. is researching bio-accumulation of lead from sewage sludge by worms, if that is close enough to soil remediation for you. You can contact the Managing Director, Mike Lotzof in Sydney on ph 92614045. Vermitech was the winner of the 1998 Business Ideas Grants $50,000 First Prize for their research. I'd be very interested to receive a copy of your paper and wonder if you would give permission for us to web-publish it? Yours sincerely Elizabeth O'Brien |
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