20.500.12556/DKUM-59269 Neutralization of waste filter dust with CO[sub]2 Nevtralizacija odpadnega filtrskega prahu s CO[sub]2 In this paper we report on the possibility of neutralizing filter dust from Talum Livarna d.o.o. The filter dust that remains after cleaning flue gas with the classification number of waste 10 10 09* is alkaline and contains heavy metals, non-metals, organic pollutants, and, therefore, has the properties of hazardous waste. The possibility of neutralizing this dust with CO2 was studied. The results showed that the treatment successfully lowered the pH value between the limits 6 and 9, which is within the legal constraints of pollution for strong acidic or alkaline waste. The contents of the hazardous substances were lowered, i.e., As, Cu, Ba, Zn, Cd, Cr, Ni, Pb, Sn, Mn and V, with percolation values that are below the level of the prescribed threshold-limit values for substances that allows their disposal in non-hazardous waste landfills. Only the percolation values of Sb, Cd, Mo and Se exceed the prescribed threshold limit values of substances that allow their disposal in inert waste landfills. The XRD analysis after the neutralization of the filter dust using CO2 showed no presence of CaO. The neutralized filter dust can be land filled as a stabilized and unreactive waste in landfills for nonhazardous wastes. Their properties also offer the possibility for incorporating them into some other material or product, such as the production of new composite materials, their use in construction products and perhaps cements or usage in backfills. Raziskali smo možnost nevtralizacije filtrskega prahu iz podjetja Talum Livarna, d. o. o. Filtrski prah po čiščenju dimnih plinov s klasifikacijsko številko odpadka 10 10 09* je alkalen, vsebuje težke kovine, nekovine, organska onesnaževala, zato ima lastnosti nevarnega odpadka. Filtrski prah smo nevtralizirali s CO2, da je nastal pretežno amorfen produkt. Po obdelavi smo uspešno znižali pH-vrednost v meje med 6 in 9, kar je v dovoljenem območju za odpadke, onesnažene z močno kislino ali bazo. Prav tako je bila zmanjšana vsebnost nevarnih snovi, in sicer As, Cu, Ba, Zn, Cd, Cr, Ni, Pb, Sn, Mn in V, tako da so izluževalne vrednosti pod mejo predpisanih parametrov izlužka in je tako dovoljeno odlaganje na odlagališčih za nenevarne odpadke. Samo izluževalne vrednosti Sb, Cd, Mo in Se še prekoračujejo predpisane mejne vrednosti, ki so dovoljene za odlaganje na odlagališčih za inertne odpadke. XRD-analiza po nevtralizaciji filtrskega prahu s CO2 ni pokazala prisotnosti CaO. Nevtraliziran filtrski prah se lahko odloži kot stabiliziran in nereaktiven odpadek na odlagališčih nenevarnih odpadkov. Glede na lastnosti obstaja možnost predelave in uporabe v koristne namene, npr. za proizvodnjo novih kompozitnih materialov, gradbenih izdelkov, morda cementa ali za zasipavanje. hazardous waste filter dust neutralization stabilization chemical properties nevarni odpadki filtrski prah nevtralizacija stabilizacija kemijske lastnosti true false true Angleški jezik Slovenski jezik Znanstveno delo 2016-05-11 03:53:49 2017-03-17 12:34:49 2022-06-20 03:06:12 2019-07-11 11:08:21 2015 0 0 str. 297-301 št. 2 Letn. 49 2015 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1580-2949 658.567.5 106193664 18576150 10.17222/mit.2014.247 1580-2949 URN:SI:UM:DK:LKCD198Z Materiali_in_Tehnologije_2015_Kracun_et_al._Neutralization_of_Waste_Filter_Dust_With_Co2.pdf Materiali_in_Tehnologije_2015_Kracun_et_al._Neutralization_of_Waste_Filter_Dust_With_Co2.pdf 1 3107C667395F87FC378F1935CEA6F603 5ae7872b14706f26f18a1b0e2a70ee50e4a5b3bbfee0fd1be7d8f64cff26e031 ff7aae79-7c0d-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=109940 http://mit.imt.si/Revija/izvodi/mit152/kracun.pdf 1 https://dk.um.si/Dokument.php?lang=slv&id=109939 Fakulteta za strojništvo 0 0 0