Rinsed and thermally treated red mud sorbents for aqueous Ni2+ ions
Само за регистроване кориснике
2010
Аутори
Smiljanić, Slavko N.Smičiklas, Ivana D.
Perić-Grujić, Aleksandra
Lončar, Boris
Mitrić, Miodrag
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Red mud, an abundant industrial waste from alumina industry, represents a rich source of various metal oxides, mainly of Fe2O3 Al2O3 and SiO2. In this study, the rinsed Bosnian red mud (RBRM) was evaluated as an economical, composite sorbent for aqueous Ni2+ ions. The process was investigated as a function of pH, contact time and initial metal concentration. The investigated mineral mixture exhibited a high acid neutralising capacity, and its most important role in cation immobilization was observed in the initial pH range 2-8. The initial metal ion concentration strongly influenced the sorption kinetics and equilibrium times. Addition of 5 g/L of RBRM caused 100% removal from the solutions of 10(-4) to 5 x 10(-4) mol/L, whereas with the further increase of Ni2+ concentration to 8 x 10(-3) mol/L, the removal efficiency decreased to 26%. The maximum sorption capacity of 0.372 mmol/g, at initial pH 5, was determined using Langmuir theoretical model. The possibility of sorption efficiency... improvement by annealing RBRM powder was investigated in the range 200-900 degrees C and the relationships between temperature, red mud physicochemical and sorption properties were established. The optimum heating temperature was found to be 600 degrees C, due to water exclusion from gibbsite and bayerite phases, leading to improved porosity and surface area, as well as increased pH value and sorption efficiency. The stability of the sorbed cation was assessed by leaching experiments in distilled water and acidic TCLP2 solution.
Кључне речи:
Red mud / Temperature treatment / Characterization / Sorption / Ni2+Извор:
Chemical Engineering Journal, 2010, 162, 1, 75-83Издавач:
- Elsevier Science Sa, Lausanne
Финансирање / пројекти:
- Истраживање хемијских и физичких феномена у обради радиоактивног и опасног отпада (RS-MESTD-MPN2006-2010-142050)
DOI: 10.1016/j.cej.2010.04.062
ISSN: 1385-8947
WoS: 000280625500009
Scopus: 2-s2.0-77954535101
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Smiljanić, Slavko N. AU - Smičiklas, Ivana D. AU - Perić-Grujić, Aleksandra AU - Lončar, Boris AU - Mitrić, Miodrag PY - 2010 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1654 AB - Red mud, an abundant industrial waste from alumina industry, represents a rich source of various metal oxides, mainly of Fe2O3 Al2O3 and SiO2. In this study, the rinsed Bosnian red mud (RBRM) was evaluated as an economical, composite sorbent for aqueous Ni2+ ions. The process was investigated as a function of pH, contact time and initial metal concentration. The investigated mineral mixture exhibited a high acid neutralising capacity, and its most important role in cation immobilization was observed in the initial pH range 2-8. The initial metal ion concentration strongly influenced the sorption kinetics and equilibrium times. Addition of 5 g/L of RBRM caused 100% removal from the solutions of 10(-4) to 5 x 10(-4) mol/L, whereas with the further increase of Ni2+ concentration to 8 x 10(-3) mol/L, the removal efficiency decreased to 26%. The maximum sorption capacity of 0.372 mmol/g, at initial pH 5, was determined using Langmuir theoretical model. The possibility of sorption efficiency improvement by annealing RBRM powder was investigated in the range 200-900 degrees C and the relationships between temperature, red mud physicochemical and sorption properties were established. The optimum heating temperature was found to be 600 degrees C, due to water exclusion from gibbsite and bayerite phases, leading to improved porosity and surface area, as well as increased pH value and sorption efficiency. The stability of the sorbed cation was assessed by leaching experiments in distilled water and acidic TCLP2 solution. PB - Elsevier Science Sa, Lausanne T2 - Chemical Engineering Journal T1 - Rinsed and thermally treated red mud sorbents for aqueous Ni2+ ions EP - 83 IS - 1 SP - 75 VL - 162 DO - 10.1016/j.cej.2010.04.062 ER -
@article{ author = "Smiljanić, Slavko N. and Smičiklas, Ivana D. and Perić-Grujić, Aleksandra and Lončar, Boris and Mitrić, Miodrag", year = "2010", abstract = "Red mud, an abundant industrial waste from alumina industry, represents a rich source of various metal oxides, mainly of Fe2O3 Al2O3 and SiO2. In this study, the rinsed Bosnian red mud (RBRM) was evaluated as an economical, composite sorbent for aqueous Ni2+ ions. The process was investigated as a function of pH, contact time and initial metal concentration. The investigated mineral mixture exhibited a high acid neutralising capacity, and its most important role in cation immobilization was observed in the initial pH range 2-8. The initial metal ion concentration strongly influenced the sorption kinetics and equilibrium times. Addition of 5 g/L of RBRM caused 100% removal from the solutions of 10(-4) to 5 x 10(-4) mol/L, whereas with the further increase of Ni2+ concentration to 8 x 10(-3) mol/L, the removal efficiency decreased to 26%. The maximum sorption capacity of 0.372 mmol/g, at initial pH 5, was determined using Langmuir theoretical model. The possibility of sorption efficiency improvement by annealing RBRM powder was investigated in the range 200-900 degrees C and the relationships between temperature, red mud physicochemical and sorption properties were established. The optimum heating temperature was found to be 600 degrees C, due to water exclusion from gibbsite and bayerite phases, leading to improved porosity and surface area, as well as increased pH value and sorption efficiency. The stability of the sorbed cation was assessed by leaching experiments in distilled water and acidic TCLP2 solution.", publisher = "Elsevier Science Sa, Lausanne", journal = "Chemical Engineering Journal", title = "Rinsed and thermally treated red mud sorbents for aqueous Ni2+ ions", pages = "83-75", number = "1", volume = "162", doi = "10.1016/j.cej.2010.04.062" }
Smiljanić, S. N., Smičiklas, I. D., Perić-Grujić, A., Lončar, B.,& Mitrić, M.. (2010). Rinsed and thermally treated red mud sorbents for aqueous Ni2+ ions. in Chemical Engineering Journal Elsevier Science Sa, Lausanne., 162(1), 75-83. https://doi.org/10.1016/j.cej.2010.04.062
Smiljanić SN, Smičiklas ID, Perić-Grujić A, Lončar B, Mitrić M. Rinsed and thermally treated red mud sorbents for aqueous Ni2+ ions. in Chemical Engineering Journal. 2010;162(1):75-83. doi:10.1016/j.cej.2010.04.062 .
Smiljanić, Slavko N., Smičiklas, Ivana D., Perić-Grujić, Aleksandra, Lončar, Boris, Mitrić, Miodrag, "Rinsed and thermally treated red mud sorbents for aqueous Ni2+ ions" in Chemical Engineering Journal, 162, no. 1 (2010):75-83, https://doi.org/10.1016/j.cej.2010.04.062 . .