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Biodegradability of the compounds introduced with microelement fertilizers into the environment

100%
Borowiec M., Polańska P., Hoffmann J.
Polish Journal of Chemical Technology
|
2007
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vol. 9
|
issue 3
38-41
EN
The results of laboratory studies into the oxygen biodegradation of chelating substances in aqueous medium under kinetic and static test conditions with added glucose as an additional source of carbon, are presented. It has been found that S,S-ethylenediaminedisuccinic acid (S,S-EDDS) and methylglycinediacetic acid (MGDA) are more readily degradable than ethylenediaminetetraacetic acid (EDTA), most commonly used in the production of microelement fertilizers. It has also been found that the presence of additional carbon sources accelerates biodegradation.
2
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Utilization of poultry droppings in mineral-organic fertilizers

100%
Hoffmann K., Lewandowska B., Borowiec M., Hoffmann J.
Polish Journal of Chemical Technology
|
2007
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vol. 9
|
issue 3
12-14
EN
The results of physicochemical analyses of raw and composted turkey droppings and those of germination tests carried out using the droppings are presented. On the basis of the results formulas for microelement mineral-organic fertilizers have been developed and fertilizer rates have been determined for winter wheat.
3
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Environmental aspects of feed phosphates production

100%
Hoffmann J., Hoffmann K., Borowiec M., Huculak M.
Polish Journal of Chemical Technology
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2009
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vol. 11
|
issue 1
16-19
EN
The risks resulting from the selected feed phosphates application in animal nutrition were analyzed. The results of the analyses of the fodder phosphates obtained in laboratory conditions were presented, including the toxic and disadvantageous substances with regard to their impact upon the environment.
4
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Biodegradation of selected substances used in liquid fertilizers as an element of Life Cycle Assessment

100%
Borowiec M., Huculak M., Hoffmann K., Hoffmann J.
Polish Journal of Chemical Technology
|
2009
|
vol. 11
|
issue 1
1-3
EN
The results of laboratory investigations into the aerobic biodegradation of chelating compounds in water medium under static test conditions are presented. It was found that nitrilotriacetic acid (NTA) and glutamic acid diacetic acid (GLDA) are more readily biodegradable than ethylenediaminetetraacetic acid (EDTA) commonly used in the production of liquid fertilizers. Biodegradation was evaluated on the basis of compound decay and changes in COD.
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