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Uporaba elektrokemijskih procesov pri remediaciji tal, onesnaženih s kovinami : doktorska disertacija = Use of elektrochemical processes for remediation of metal contaminated soil : doctoral dissertation
Voglar, David
V doktorskem delu smo predstavili novo tehnologijo pranja tal s kelatnim ligandom EDTA v pilotnem merilu. S postopki pranja tal smo odstranili potencialno toksične elemente (PTE) iz tal od 69 do 84 % ...Pb, od 22 do 64 % Zn in od 52 do 70 % Cd. Novost pri pranju tal je ločitev trdne in tekoče faze ter hkratno izpiranje z EDTA mobiliziranih PTE v komorni filter stiskalnici. Potretiranju tal smo uspešno reciklirali do 76 % EDTA z kislinskim izobarjanjem in predhodnim alkalnim tretiranjem procesne raztopine, kjer smo iz kompleksa z EDTA odstranili večino PTE in vso Fe. Pralno raztopino smo tretirali z elektrokemijskimi naprednimi oksidacijskimi postopki (ENOP). Z obarjanjem na jekleno nerjavečo katodo smo odstranili preostale PTE (do 99.9 % Pb, 98.9 % Zn in do 99.4 % Cd) v raztopini in preostali EDTA (do 99.9 %). Tako smo lahko celotno pralno raztopino ponovno uporabili v procesu pranja/spiranja tal. Materialni stroški, elektrika in potrošni material segajov okvire dosedanjih razvitih metod čiščenja tal. Najcenejši postopek pranja tal, ki smo ga razvili, predstavlja strošek 50.5 Ž na tono tal, kjer direktno odlagamo toksične odpadke na varna odlagališča in 56.1 Ž na tono tal, kjer stabiliziramo toksične odpadke z bitumnom za varno odlaganje na primernih odlagališčih.
Type of material - dissertation
; adult, serious
Publication and manufacture - Ljubljana : [D. Voglar], 2013
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