20.500.12556/DKUM-23587 VPLIV UPORABE SINTETIČNIH ZEOLITOV 4A IN 13X NA PRAŠIČJO GNOJEVKO THE EFFECT SYNTHETIC ZEOLITES 4A AND 13X ON SWINE SLURRY V hlevu za prašiče Fakultete za kmetijstvo in biosistemske vede smo v sodelovanju s podjetjem Silkem iz Kidričevega izvedli poskus za ugotavljanje vpliva uporabe sintetičnih zeolitov 4A in 13X na prašičjo gnojevko. Poskuse smo opravljali s ciljem znižanja smradu pri kmetijski proizvodnji, kar je za preživetje kmetijske proizvodnje pomemben cilj, saj so v EU opazni trendi po spreminjanju okoljskih standardov in zakonodaje zaradi zahtev po višji kakovosti sobivanja med kmetijskimi proizvajalci in ostalo populacijo. Menimo, da je izbira tematike naše naloge smiselna in aktualna. Premešano gnojevko smo razporedili v šestnajst enakih posod, od katerih jih je bilo osem namenjenih zeolitu 4A, ostalih osem pa zeolitu 13X. Testirali smo naslednje odmerke zeolitov: 0 g/L (kontrola), 4 g/L, 8 g/L in 12 g/L. V tretjem in četrtem tednu smo poleg obstoječih vzorcev naredili še dodatni vzorec zeolita 4A z največjim odmerkom, ki je znašal 30 g/L. Poskus je potekal en mesec in sicer v času od 11.7.2011 do 10.8.2011. Ročno in strojno mešanje kot tudi merjenje temperature in pH smo opravljali vsak dan ob istem času. Vzorce gnojevke smo jemali enkrat tedensko in jih po odvzemu prepeljali v kemijski laboratorij Ikema, kjer je bila izvedena analiza vsebnosti celokupnega in amonijskega dušika, fosforja, celokupnega organskega ogljika, kalija in suhe snovi. S poskusom smo želeli ugotoviti, ali lahko z dodatki zeolita zmanjšamo vsebnost določenih kemičnih spojin v gnojevki in tako posledično zmanjšamo smrad. Rezultati sicer nakazujejo na želeno delovanje zeolitov, vendar pa velika variabilnosti podatkov onemogoča zanesljivo znanstveno sklepanje. Zmanjšanje smradu je bilo organoleptično zaznati s strani izvajalcev poskusa in laborantov, vendar pa na voljo nismo imeli ustrezne metode, s katero bi to te zaznave lahko dokazali. An experiment to determine the effect of the use of synthetic zeolites 4A and 13X in swine slurry was carried out in the Pig Research Centre of Faculty of Agriculture and Life Sciences in cooperation with Silkem d.o.o (Kidričevo). The aim of the experiments was to reduce unpleasant odour in agricultural production, which is an important goal for its survival, namely EU trends to change environmental standards and legislation can be observed due to requirements for a higher quality of coexistence between farmers and the rest of the population. We believe that the topic of our work is meaningful and relevant. In the experiment, mixed slurry was placed in sixteen identical containers. Eight of them were used for testing zeolite 4A and the other eight to test zeolite 13X. Each zeolite was added in the slurry in different concentrations 0 g/L (control), 4 g/L, 8 g/L and 12 g/L. In the 3rd and 4th week of the experiment, we additionally tested zeolite 4A with the maximum concentration of 30 g/L. The experiment was carried out from 11 June 2011 to 10 August 2011 (one month). Hand and machine mixing of slurry as well as the measurements of temperature and pH were performed every day at the same time. Samples were taken once a week and transported to the Ikema laboratory, where chemical analysis of total and ammoniacal nitrogen, phosphorus, total organic carbon, potassium and dry matter in pig slurry was performed. The aim of the experiment was to determine if zeolite supplementation could reduce the presence of certain chemical compounds in the slurry and thus consequently reduce odors. The results indicated the desired activity of zeolites. However, big variability of the data does not enable to draw definite scientific conclusions. Experimental in laboratory staff could organoleptically detect the reduction of odor, but no appropriate method was available to prove this perception. sintetični zeoliti / zeolit 4A / zeolit 13X / prašičja gnojevka / kemijske lastnosti / temperatura / pH / zmanjševanje smradu Synthetic zeolites / zeolite 4A / zeolite 13X / pig slurry / chemical properties / temperature / pH / stench reduction true true false Slovenski jezik Angleški jezik Magistrsko delo 2012-05-28 12:03:51 2012-06-14 14:43:23 2022-04-14 20:47:39 2023-12-30 03:15:59 2012 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 URN:SI:UM:DK:AYRO1LOV MAG_Krajnc_Vanina_2012.pdf MAG_Krajnc_Vanina_2012.pdf 1 90991343ABA98693664F5CAC66AE469C 8bc4ded7bd172c5c4720de95c36ccdce695be7bfe1528383442de763dee12270 baeb7cab-7c06-11eb-bb7a-00155d0001ca 20.500.12556/dkum/b916106c-37d5-4bb6-9387-0e927e07ef19 https://dk.um.si/Dokument.php?lang=slv&id=30923 Fakulteta za kmetijstvo in biosistemske vede 0 0 0