20.500.12556/DKUM-74276 Adsorpcija kovinskih ionov na žlindro diplomsko delo univerzitetnega študijskega programa I. stopnje Adsorption of metal ions on slag Onesnaževanje z odpadnimi vodami predstavlja velik delež onesnaževanja narave. V teh odpadnih vodah se pogosto nahajajo tudi težke kovine, ki jih moramo zaradi ogrožanja okolja, živali in ljudi iz vode odstraniti. Kot poceni metoda za odstranjevanje težkih kovin iz vode, se je uveljavila adsorpcija. V iskanju učinkovitih ter poceni adsorbentov, se je dobro izkazala tudi žlindra, ki je stranski produkt pri proizvodnji jekla. V diplomskem delu predstavljamo rezultate raziskave adsorpcijskih lastnosti bele žlindre. Žlindri smo najprej določili specifično površino BET, volumen por, premer por, velikost delcev in zeta potencial. Nadalje smo preučevali vpliv pH in koncentracije na adsorpcijo železovih, bakrovih in svinčevih ionov. Hkrati smo preučili še medsebojni vpliv izbranih ionov na adsorpcijo. Preučevali smo učinkovitost in kapaciteto adsorpcije in iz rezultatov ugotovili, da pH minimalno vpliva na adsorpcijo bakra in železa, svinec pa ima adsorpcijski maksimum pri pH 7. Pri preiskovanju vpliva koncentracije smo ugotovili, da učinkovitost adsorpcije s koncentracijo narašča za svinec, na baker in železo pa skoraj ne vpliva, saj je bila učinkovitost v območju koncentracij od 1 mM do 13 mM 100 %. Medsebojni vpliv ionov daje pozitivne rezultate na učinek adsorpcije. Waste water pollution represents a substantial share in environmental pollution. Quite often, waste waters contain heavy metals – and because they pose a threat to the environment, animals and humans, their removal from water is necessary. Adsorption has become a widely used and inexpensive method for removing heavy metals from water. In search for efficient and inexpensive adsorbents, slag, a steel-making by-product, has performed rather well. The present diploma thesis presents the findings of the study of white slag adsorption properties. First, specific surface area BET of slag was determined as well as pore volume, pore diameter, particle size and zeta potential. The next step was the determination of how pH and concentration affect the adsorption of iron, copper and lead ions. The interaction of the selected ions and their impact on the adsorption process was also studied. The results of adsorption efficiency and capacity reveal that the pH has minimal effect on the adsorption of copper and iron; for lead the adsorption maximum is at pH 7. Higher concentrations resulted in better adsorption efficiency for lead but hardly affected the adsorption of copper and iron – the efficiency range being from 1 mM to 13 mM 100%. The interaction of ions positively affects the adsorption efficiency. adsorpcija žlindra težke kovine zeta potencial BET adsorption slag heavy metals zeta potential BET true true false [M. Irgolič] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2019-08-21 11:28:01 2019-09-17 11:33:08 2022-08-09 08:33:46 2019-10-16 03:20:20 2019 0 Maribor 0 Maribor X, 22 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 666.9.022.2:66.081.3(043.2) 22624278 URN:SI:UM:DK:3YWV6VLO UN_Irgolic_Mihael_2019.pdf UN_Irgolic_Mihael_2019.pdf 1 9C02FC3C216DBD51C36C9AD9551F4E58 5a2657b3d91d3084dc05107280d2cd9475a5cf1ea1c5d05c1491bcfe6a4b2c53 d590ab7f-7c10-11eb-bb7a-00155d0001ca 20.500.12556/dkum/c0f8d627-25ad-46af-96c9-d08ac412b0f7 https://dk.um.si/Dokument.php?lang=slv&id=136116 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0