Rinsed and thermally treated red mud sorbents for aqueous Ni2+ ions
Нема приказа
Аутори
Smiljanić, Slavko N.Smičiklas, Ivana D.
Perić-Grujić, Aleksandra A.
Lončar, Boris B.
Mitrić, Miodrag
Чланак у часопису
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. (C) 2010 Elsevier BM. All rights reserved.
Кључне речи:
Red mud / Temperature treatment / Characterization / Sorption / Ni2+Извор:
Chemical Engineering Journal, 2010, 162, 1, 75-83Финансирање / пројекти:
- Ministry of Science and Technological Development of Serbia [142050]
DOI: 10.1016/j.cej.2010.04.062
ISSN: 1385-8947; 1873-3212
WoS: 000280625500009
Scopus: 2-s2.0-77954535101
Колекције
Институција/група
VinčaTY - JOUR AU - Smiljanić, Slavko N. AU - Smičiklas, Ivana D. AU - Perić-Grujić, Aleksandra A. AU - Lončar, Boris B. AU - Mitrić, Miodrag PY - 2010 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4076 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. (C) 2010 Elsevier BM. All rights reserved. T2 - Chemical Engineering Journal T1 - Rinsed and thermally treated red mud sorbents for aqueous Ni2+ ions VL - 162 IS - 1 SP - 75 EP - 83 DO - 10.1016/j.cej.2010.04.062 ER -
@article{ author = "Smiljanić, Slavko N. and Smičiklas, Ivana D. and Perić-Grujić, Aleksandra A. and Lončar, Boris B. 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. (C) 2010 Elsevier BM. All rights reserved.", journal = "Chemical Engineering Journal", title = "Rinsed and thermally treated red mud sorbents for aqueous Ni2+ ions", volume = "162", number = "1", pages = "75-83", doi = "10.1016/j.cej.2010.04.062" }
Smiljanić, S. N., Smičiklas, I. D., Perić-Grujić, A. A., Lončar, B. B.,& Mitrić, M.. (2010). Rinsed and thermally treated red mud sorbents for aqueous Ni2+ ions. in Chemical Engineering Journal, 162(1), 75-83. https://doi.org/10.1016/j.cej.2010.04.062
Smiljanić SN, Smičiklas ID, Perić-Grujić AA, Lončar BB, 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 A., Lončar, Boris B., 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 . .