[Terrapreta] Pee AKA human urine

[Adriana Downie]

http://www.cbc.ca/news/goinggreen/reusing-water.html
Except: In Sweden, a test market in the council of Tanum is recycling
urine for use as fertilizer on farms. All new homes in the area are
required by law to have special toilets that separate urine and pipe it
into a holding tank that farmers access at regular intervals. 
Experts say this is better for the environment because the special
toilets use less water. And less energy is utilized at treatment
facilities. 
Most importantly, human urine has the most concentrated source of
phosphorus, which is a vital ingredient in agricultural fertilizer. Tell
that to the neighbour with the great lawn. 
 
 
-----Original Message-----
From: Michael Bailes [mailto:michaelangelica at gmail.com] 
Sent: Wednesday, 17 October 2007 4:50 PM
To: Terrapreta
Subject: [Terrapreta] Pee AKA human urine
 
Received: 26 September 1994  Accepted: 23 January 1995  
Abstract  Stored human urine had pH values of 8.9 and was composed of
eight main ionic species (> 0.1 meq L-1), the cations Na, K, NH 4, Ca
and the anions, Cl, SO4, PO4 and HCO3. Nitrogen was mainly (> 90%)
present as ammoniacal N, with ammonium bicarbonate being the dominant
compound. Urea and urate decomposed during storage. 
 Heavy metal concentrations in urine samples were low compared with
other organic fertilizers, but copper, mercury, nickel and zinc were
10-500 times higher in urine than in precipitation and surface waters.
In a pot experiment with 15N labelled human urine, higher gaseous losses
and lower crop uptake (barley) of urine N than of labelled ammonium
nitrate were found.
 Phosphorus present in urine was utilized at a higher rate than soluble
phosphate, showing that urine P is at least as available to crops as
soluble P fertilizers.
http://www.springerlink.com/content/km386u8967256354/and32P-tracer -
plant nutrients - pot experiment 


-- 
Michael the Archangel

"You can fix all the world's problems in a garden. . . . 
Most people don't know that"
FROM
http://www.blog.thesietch.org/wp-content/permaculture.swf 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: /pipermail/terrapreta_bioenergylists.org/attachments/20071017/898fd6da/attachment-0001.html