Luženje jalovine pomoću Acidithiobacillus ferrooxidans u cilju valorizacije korisnih komponenti
Microbial leaching of ore dumps by Acidithiobacillus ferrooxidans in purpose of metal recovery
Abstract
Litotrofne bakterije učestvuju u transformacijama i kruženju elemenata u prirodi, sa veoma značajnom ulogom u bio-geohemijskim ciklusima sumpora i gvožđa, a u manjoj meri azota i drugih elemenata. One su litotrofni mikroorganizmi, što u doslovnom prevodu sa starogrčkog jezika znači 'mikroorganizmi koji se hrane kamenom'. Uloga ovih mikroorganizama u prirodi upotrebljena je za njihovu primenu u dobijanju metala, zapravo prevođenje u rastvor (ili koncentrovanje) njihovih teško rastvornih jedinjenja (prvenstveno sulfida). Dakle, procesi koji u prirodi teku spontano, usmereni su i pojačani kako bi se dobili korisni metali, prvenstveno iz metalom siromašnih ruda i otpadnih materijala (vanbilansne rude, raskrivke, jalovine itd.). U cilju valorizacije korisnih komponenata jalovine (raskrivke starog kopa u Boru) vršeno je mikrobiološko luženje u laboratorijskim uslovima, korišćenjem kulture Acidithiobacillus ferrooxidans. U eksperimentima su luženi uzorci, tačkasto uzeti sa 12 lokacija. Labora...torijskim istraživanjima su definisani sledeći parametri: fizičko-hemijske karakteristike jalovine, odnos tečne i čvrste faze, broj bakterija, vreme luženja, kao i broj recikliranja. Dobijeni rezultati pokazuju da je procenat izluženja bakra pet puta veći u suspenziji sa Acidithiobacillus ferrooxidans, nego u kontrolnoj suspenziji. Mikrobiološki postupci luženja siromašnih ruda i jalovina, imaju značajnu ulogu kako za dobijanje 'dopunskih' količina metala, tako i u konceptu zaštite okoline, jer se jednostavnom tehnologijom, stavljaju pod kontrolu i usmeravaju, a time i sprečavaju nekontrolisani odlivi metala u vodotokove i zemljište (koji u ovoj sredini predstavljaju polutante).
Lithotrophs are involved in many transforming and cyclic reactions of elements in nature, having an important role in biochemical cycles of sulfur and iron, as well of nitrogen and other elements. The term 'lithotroph' is created from the terms 'lithos' (rock) and 'troph' (consumer), meaning the 'eaters of rock. The role of these microorganisms in nature has been widely used by man in processes of metal exploitation. More precise, main goal is converting low-soluble metal compounds, mostly sulfides, into solutions. Practically, naturally occurring reactions have been directed and enhanced, in such a way to get useful metals, mostly from low-grade metal ores and waste materials. The objective of our study was to investigate recovery of useful components from low-grade ores. The microorganism used in leaching was Acidithiobacillus ferrooxidans. Experiments were performed with samples taken from 12 different locations on Bor ore dumps in order to establish recovery conditions. Parameters,... like solid-liquid ratio, number of bacteria, rate of leaching, physical and chemical characteristics of ore, rate of watering and number cycles, were determined. The results obtained show 5-fold higher copper leaching efficiency in the suspension with Acidithiobacillus ferrooxidans, then in control suspension. Microbiological leaching of low-grade ores and mine tailings is used nowadays as a method of supplying additional quantities of metal as well as protection of the environment. Natural processes of microbiological leaching, by use of relatively simple technology, are controlled and focused so that uncontrolled loss of useful components (pollutants in this environment) into streams and rivers is stopped.
Keywords:
luženje / jalovište / Acidithiobacillus ferrooxidans / ore dumps / leaching / Acidithiobacillus ferrooxidansSource:
Ecologica, 2011, 18, 62, 291-294Publisher:
- Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd
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Institut za tehnologiju nuklearnih i drugih mineralnih sirovinaTY - JOUR AU - Avdalović, Jelena AU - Šoštarić, Tatjana AU - Lopičić, Zorica AU - Ćosović, Aleksandar AU - Adamović, Vladimir PY - 2011 UR - https://ritnms.itnms.ac.rs/handle/123456789/190 AB - Litotrofne bakterije učestvuju u transformacijama i kruženju elemenata u prirodi, sa veoma značajnom ulogom u bio-geohemijskim ciklusima sumpora i gvožđa, a u manjoj meri azota i drugih elemenata. One su litotrofni mikroorganizmi, što u doslovnom prevodu sa starogrčkog jezika znači 'mikroorganizmi koji se hrane kamenom'. Uloga ovih mikroorganizama u prirodi upotrebljena je za njihovu primenu u dobijanju metala, zapravo prevođenje u rastvor (ili koncentrovanje) njihovih teško rastvornih jedinjenja (prvenstveno sulfida). Dakle, procesi koji u prirodi teku spontano, usmereni su i pojačani kako bi se dobili korisni metali, prvenstveno iz metalom siromašnih ruda i otpadnih materijala (vanbilansne rude, raskrivke, jalovine itd.). U cilju valorizacije korisnih komponenata jalovine (raskrivke starog kopa u Boru) vršeno je mikrobiološko luženje u laboratorijskim uslovima, korišćenjem kulture Acidithiobacillus ferrooxidans. U eksperimentima su luženi uzorci, tačkasto uzeti sa 12 lokacija. Laboratorijskim istraživanjima su definisani sledeći parametri: fizičko-hemijske karakteristike jalovine, odnos tečne i čvrste faze, broj bakterija, vreme luženja, kao i broj recikliranja. Dobijeni rezultati pokazuju da je procenat izluženja bakra pet puta veći u suspenziji sa Acidithiobacillus ferrooxidans, nego u kontrolnoj suspenziji. Mikrobiološki postupci luženja siromašnih ruda i jalovina, imaju značajnu ulogu kako za dobijanje 'dopunskih' količina metala, tako i u konceptu zaštite okoline, jer se jednostavnom tehnologijom, stavljaju pod kontrolu i usmeravaju, a time i sprečavaju nekontrolisani odlivi metala u vodotokove i zemljište (koji u ovoj sredini predstavljaju polutante). AB - Lithotrophs are involved in many transforming and cyclic reactions of elements in nature, having an important role in biochemical cycles of sulfur and iron, as well of nitrogen and other elements. The term 'lithotroph' is created from the terms 'lithos' (rock) and 'troph' (consumer), meaning the 'eaters of rock. The role of these microorganisms in nature has been widely used by man in processes of metal exploitation. More precise, main goal is converting low-soluble metal compounds, mostly sulfides, into solutions. Practically, naturally occurring reactions have been directed and enhanced, in such a way to get useful metals, mostly from low-grade metal ores and waste materials. The objective of our study was to investigate recovery of useful components from low-grade ores. The microorganism used in leaching was Acidithiobacillus ferrooxidans. Experiments were performed with samples taken from 12 different locations on Bor ore dumps in order to establish recovery conditions. Parameters, like solid-liquid ratio, number of bacteria, rate of leaching, physical and chemical characteristics of ore, rate of watering and number cycles, were determined. The results obtained show 5-fold higher copper leaching efficiency in the suspension with Acidithiobacillus ferrooxidans, then in control suspension. Microbiological leaching of low-grade ores and mine tailings is used nowadays as a method of supplying additional quantities of metal as well as protection of the environment. Natural processes of microbiological leaching, by use of relatively simple technology, are controlled and focused so that uncontrolled loss of useful components (pollutants in this environment) into streams and rivers is stopped. PB - Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd T2 - Ecologica T1 - Luženje jalovine pomoću Acidithiobacillus ferrooxidans u cilju valorizacije korisnih komponenti T1 - Microbial leaching of ore dumps by Acidithiobacillus ferrooxidans in purpose of metal recovery EP - 294 IS - 62 SP - 291 VL - 18 UR - conv_245 ER -
@article{ author = "Avdalović, Jelena and Šoštarić, Tatjana and Lopičić, Zorica and Ćosović, Aleksandar and Adamović, Vladimir", year = "2011", abstract = "Litotrofne bakterije učestvuju u transformacijama i kruženju elemenata u prirodi, sa veoma značajnom ulogom u bio-geohemijskim ciklusima sumpora i gvožđa, a u manjoj meri azota i drugih elemenata. One su litotrofni mikroorganizmi, što u doslovnom prevodu sa starogrčkog jezika znači 'mikroorganizmi koji se hrane kamenom'. Uloga ovih mikroorganizama u prirodi upotrebljena je za njihovu primenu u dobijanju metala, zapravo prevođenje u rastvor (ili koncentrovanje) njihovih teško rastvornih jedinjenja (prvenstveno sulfida). Dakle, procesi koji u prirodi teku spontano, usmereni su i pojačani kako bi se dobili korisni metali, prvenstveno iz metalom siromašnih ruda i otpadnih materijala (vanbilansne rude, raskrivke, jalovine itd.). U cilju valorizacije korisnih komponenata jalovine (raskrivke starog kopa u Boru) vršeno je mikrobiološko luženje u laboratorijskim uslovima, korišćenjem kulture Acidithiobacillus ferrooxidans. U eksperimentima su luženi uzorci, tačkasto uzeti sa 12 lokacija. Laboratorijskim istraživanjima su definisani sledeći parametri: fizičko-hemijske karakteristike jalovine, odnos tečne i čvrste faze, broj bakterija, vreme luženja, kao i broj recikliranja. Dobijeni rezultati pokazuju da je procenat izluženja bakra pet puta veći u suspenziji sa Acidithiobacillus ferrooxidans, nego u kontrolnoj suspenziji. Mikrobiološki postupci luženja siromašnih ruda i jalovina, imaju značajnu ulogu kako za dobijanje 'dopunskih' količina metala, tako i u konceptu zaštite okoline, jer se jednostavnom tehnologijom, stavljaju pod kontrolu i usmeravaju, a time i sprečavaju nekontrolisani odlivi metala u vodotokove i zemljište (koji u ovoj sredini predstavljaju polutante)., Lithotrophs are involved in many transforming and cyclic reactions of elements in nature, having an important role in biochemical cycles of sulfur and iron, as well of nitrogen and other elements. The term 'lithotroph' is created from the terms 'lithos' (rock) and 'troph' (consumer), meaning the 'eaters of rock. The role of these microorganisms in nature has been widely used by man in processes of metal exploitation. More precise, main goal is converting low-soluble metal compounds, mostly sulfides, into solutions. Practically, naturally occurring reactions have been directed and enhanced, in such a way to get useful metals, mostly from low-grade metal ores and waste materials. The objective of our study was to investigate recovery of useful components from low-grade ores. The microorganism used in leaching was Acidithiobacillus ferrooxidans. Experiments were performed with samples taken from 12 different locations on Bor ore dumps in order to establish recovery conditions. Parameters, like solid-liquid ratio, number of bacteria, rate of leaching, physical and chemical characteristics of ore, rate of watering and number cycles, were determined. The results obtained show 5-fold higher copper leaching efficiency in the suspension with Acidithiobacillus ferrooxidans, then in control suspension. Microbiological leaching of low-grade ores and mine tailings is used nowadays as a method of supplying additional quantities of metal as well as protection of the environment. Natural processes of microbiological leaching, by use of relatively simple technology, are controlled and focused so that uncontrolled loss of useful components (pollutants in this environment) into streams and rivers is stopped.", publisher = "Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd", journal = "Ecologica", title = "Luženje jalovine pomoću Acidithiobacillus ferrooxidans u cilju valorizacije korisnih komponenti, Microbial leaching of ore dumps by Acidithiobacillus ferrooxidans in purpose of metal recovery", pages = "294-291", number = "62", volume = "18", url = "conv_245" }
Avdalović, J., Šoštarić, T., Lopičić, Z., Ćosović, A.,& Adamović, V.. (2011). Luženje jalovine pomoću Acidithiobacillus ferrooxidans u cilju valorizacije korisnih komponenti. in Ecologica Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd., 18(62), 291-294. conv_245
Avdalović J, Šoštarić T, Lopičić Z, Ćosović A, Adamović V. Luženje jalovine pomoću Acidithiobacillus ferrooxidans u cilju valorizacije korisnih komponenti. in Ecologica. 2011;18(62):291-294. conv_245 .
Avdalović, Jelena, Šoštarić, Tatjana, Lopičić, Zorica, Ćosović, Aleksandar, Adamović, Vladimir, "Luženje jalovine pomoću Acidithiobacillus ferrooxidans u cilju valorizacije korisnih komponenti" in Ecologica, 18, no. 62 (2011):291-294, conv_245 .