"Hradil, David" . "Chemosphere" . "RIV/61388980:_____/04:00106546" . "Machovi\u010D, V." . "[4E74CC35C23C]" . . "567;577" . . . "Ettler, V." . "Kom\u00E1rkov\u00E1, M." . "Coufal, P." . . "7"^^ . . "Leaching of lead metallurgical slag in citric solutions - implications for disposal and weathering in soil environments"@en . "Metallurgical slags from primary lead smelting were submitted to a 30-day batch leaching procedure in 20 and 8 mM citric solutions in order to determine the kinetics of release of Pb, Cu, Zn and As. The experiment was coupled with the PHREEQC-2 speciation-solubility modelling and mineralogical study of newly formed products (SEM/EDS, XRD, TEM/EDS and Raman spectrometry). A strong scavenging of metals and metalloids from the 8 mM citric leachate was observed due to the formation of newly formed products. The secondary precipitate consisted of well-developed calcite (CaCO3) crystals and amorphous organo-mineral matrix composed of hydrous ferric oxides and amorphous SiO2. Metals (Pb, Zn, Cu) and arsenic released into the solution were subsequently bound onto the newly formed product (adsorption on oxides) or trapped within the calcite structure (Zn, Mn). Similar scavenging mechanism can be taken into account in real soil systems with lower concentration of citric acid. Then, the coveri..." . . "Leaching of lead metallurgical slag in citric solutions - implications for disposal and weathering in soil environments" . "slag; Pb metallurgy; leaching"@en . . . . "P(GP205/01/D132), P(LN00A028), Z(AV0Z4032918), Z(MSM 113100005)" . "Strusky, vznikaj\u00EDc\u00ED p\u0159i taven\u00ED olov\u011Bn\u00FDch rud, byly lou\u017Eeny ve vs\u00E1dkov\u00FDch reaktorech"@cs . . "Metallurgical slags from primary lead smelting were submitted to a 30-day batch leaching procedure in 20 and 8 mM citric solutions in order to determine the kinetics of release of Pb, Cu, Zn and As. The experiment was coupled with the PHREEQC-2 speciation-solubility modelling and mineralogical study of newly formed products (SEM/EDS, XRD, TEM/EDS and Raman spectrometry). A strong scavenging of metals and metalloids from the 8 mM citric leachate was observed due to the formation of newly formed products. The secondary precipitate consisted of well-developed calcite (CaCO3) crystals and amorphous organo-mineral matrix composed of hydrous ferric oxides and amorphous SiO2. Metals (Pb, Zn, Cu) and arsenic released into the solution were subsequently bound onto the newly formed product (adsorption on oxides) or trapped within the calcite structure (Zn, Mn). Similar scavenging mechanism can be taken into account in real soil systems with lower concentration of citric acid. Then, the coveri..."@en . "Strusky, vznikaj\u00EDc\u00ED p\u0159i taven\u00ED olov\u011Bn\u00FDch rud, byly lou\u017Eeny ve vs\u00E1dkov\u00FDch reaktorech"@cs . . "1"^^ . . . . "Metalurgick\u00E9 strusky, vznikaj\u00EDc\u00ED p\u0159i taven\u00ED olov\u011Bn\u00FDch rud, byly lou\u017Eeny ve vs\u00E1dkov\u00FDch reaktorech s 20 a 8mM roztoky kyseliny citr\u00F3nov\u00E9 po dobu 30 dn\u00ED s c\u00EDlem popsat kinetiku uvol\u0148ov\u00E1n\u00ED Pb, Cu, Zn a As. Experiment\u00E1ln\u00ED v\u00FDsledky byly ov\u011B\u0159eny teoretick\u00FDmi v\u00FDpo\u010Dty specia\u010Dn\u00EDho programu PHREEQC-2, nov\u011B vznikl\u00E9 f\u00E1ze byly mineralogicky pops\u00E1ny pomoc\u00ED SEM/EDS, XRD, TEM/EDS a Ramanovy spektroskopie. P\u0159i aplikaci 8mM roztoku bylo zji\u0161t\u011Bno siln\u00E9 vym\u00FDv\u00E1n\u00ED kov\u016F i nekov\u016F vedouc\u00ED k tvorb\u011B \u010Detn\u00FDch nov\u00FDch f\u00E1z\u00ED \u2013 p\u0159edev\u0161\u00EDm dob\u0159e krystalovan\u00E9ho kalcitu a amorfn\u00ED organo-miner\u00E1ln\u00ED matrice slo\u017Een\u00E9 z hydratovan\u00FDch oxid\u016F Fe a amorfn\u00EDho SiO2. Vylou\u017Een\u00E9 kovy (Pb, Zn, Cu) a arsen byly n\u00E1sledn\u011B fixov\u00E1ny bu\u010F adsorpc\u00ED na povrchu nov\u011B vznikl\u00FDch oxid\u016F nebo p\u0159\u00EDmo ve struktu\u0159e kalcitu (Zn, Mn). Podobn\u00E9 mechanismy lze p\u0159edpokl\u00E1dat i v re\u00E1ln\u00FDch p\u016Fdn\u00EDch syst\u00E9mech s n\u00EDzk\u00FDmi koncentracemi kyseliny citr\u00F3nov\u00E9. P\u0159ekryt\u00ED struskov\u00FDch hald silnou vrstvou p\u016Fdy s n\u00E1slednou rekultivac\u00ED se s ohledem na v\u00FD\u0161e uveden\u00E9 v\u00FDsledky proto je..."@cs . "7" . "RIV/61388980:_____/04:00106546!RIV/2005/AV0/A50005/N" . . "11"^^ . "Delorme, F." . "571266" . "Jehli\u010Dka, J." . "Leaching of lead metallurgical slag in citric solutions - implications for disposal and weathering in soil environments"@en . . "Leaching of lead metallurgical slag in citric solutions - implications for disposal and weathering in soil environments" . "0045-6535" . . "57" . . "GB - Spojen\u00E9 kr\u00E1lovstv\u00ED Velk\u00E9 Brit\u00E1nie a Severn\u00EDho Irska" . .