Bioleaching of phosphorus from low grade ores and concentrates with acidophilic iron- and sulphur-oxidizing bacteria

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

Bioleaching experiments of phosphorus from low grade fluorapatite ore containing 8.2% P2O5 and from fluorapatite concentrate containing 29.8% P2O5 were carried out in shake flasks. Elemental sulphur was supplemented as an energy source for acid generation. Mixed and pure acidophilic bacterial cultures consisting of iron- and/or sulphur-oxidizing bacteria Acidithiobacillus ferrooxidans, A. thiooxidans and Leptospirillum ferrooxidans were used in the experiments. These acidophiles are commonly used in bioleaching of sulphide minerals, but their application on phosphorus bioleaching has been limited. Phosphorus leaching was shown to be a pH-dependant phenomenon. Phosphorus leaching yields of up to 97% and 28% were obtained in 3 weeks for low grade fluorapatite ore and concentrate, respectively. These results indicate a potential for applying bioleaching for phosphorus extraction from low grade materials.
Original languageEnglish
Pages (from-to)266-269
JournalAdvanced Materials Research
Volume825
DOIs
Publication statusPublished - 2013
MoE publication typeNot Eligible
Event20th International Biohydrometallurgy Symposium, IBS 2013 - Antofagasta, Chile
Duration: 8 Oct 201311 Oct 2013
Conference number: 20

Fingerprint

Bioleaching
Ores
Phosphorus
Bacteria
Sulfur
Iron
Leaching
Sulfide minerals
Experiments
Acids

Keywords

  • acidophilic bacteria
  • bioleaching
  • phosphorus

Cite this

@article{a8b7e67c5fcd4cd5831bb692b59e9994,
title = "Bioleaching of phosphorus from low grade ores and concentrates with acidophilic iron- and sulphur-oxidizing bacteria",
abstract = "Bioleaching experiments of phosphorus from low grade fluorapatite ore containing 8.2{\%} P2O5 and from fluorapatite concentrate containing 29.8{\%} P2O5 were carried out in shake flasks. Elemental sulphur was supplemented as an energy source for acid generation. Mixed and pure acidophilic bacterial cultures consisting of iron- and/or sulphur-oxidizing bacteria Acidithiobacillus ferrooxidans, A. thiooxidans and Leptospirillum ferrooxidans were used in the experiments. These acidophiles are commonly used in bioleaching of sulphide minerals, but their application on phosphorus bioleaching has been limited. Phosphorus leaching was shown to be a pH-dependant phenomenon. Phosphorus leaching yields of up to 97{\%} and 28{\%} were obtained in 3 weeks for low grade fluorapatite ore and concentrate, respectively. These results indicate a potential for applying bioleaching for phosphorus extraction from low grade materials.",
keywords = "acidophilic bacteria, bioleaching, phosphorus",
author = "Tuija Sarlin and Outi Priha and Mona Arnold and P{\"a}ivi Kinnunen",
year = "2013",
doi = "10.4028/www.scientific.net/AMR.825.266",
language = "English",
volume = "825",
pages = "266--269",
journal = "Advanced Materials Research",
issn = "1022-6680",
publisher = "Trans Tech Publications",

}

Bioleaching of phosphorus from low grade ores and concentrates with acidophilic iron- and sulphur-oxidizing bacteria. / Sarlin, Tuija; Priha, Outi; Arnold, Mona; Kinnunen, Päivi.

In: Advanced Materials Research, Vol. 825, 2013, p. 266-269.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Bioleaching of phosphorus from low grade ores and concentrates with acidophilic iron- and sulphur-oxidizing bacteria

AU - Sarlin, Tuija

AU - Priha, Outi

AU - Arnold, Mona

AU - Kinnunen, Päivi

PY - 2013

Y1 - 2013

N2 - Bioleaching experiments of phosphorus from low grade fluorapatite ore containing 8.2% P2O5 and from fluorapatite concentrate containing 29.8% P2O5 were carried out in shake flasks. Elemental sulphur was supplemented as an energy source for acid generation. Mixed and pure acidophilic bacterial cultures consisting of iron- and/or sulphur-oxidizing bacteria Acidithiobacillus ferrooxidans, A. thiooxidans and Leptospirillum ferrooxidans were used in the experiments. These acidophiles are commonly used in bioleaching of sulphide minerals, but their application on phosphorus bioleaching has been limited. Phosphorus leaching was shown to be a pH-dependant phenomenon. Phosphorus leaching yields of up to 97% and 28% were obtained in 3 weeks for low grade fluorapatite ore and concentrate, respectively. These results indicate a potential for applying bioleaching for phosphorus extraction from low grade materials.

AB - Bioleaching experiments of phosphorus from low grade fluorapatite ore containing 8.2% P2O5 and from fluorapatite concentrate containing 29.8% P2O5 were carried out in shake flasks. Elemental sulphur was supplemented as an energy source for acid generation. Mixed and pure acidophilic bacterial cultures consisting of iron- and/or sulphur-oxidizing bacteria Acidithiobacillus ferrooxidans, A. thiooxidans and Leptospirillum ferrooxidans were used in the experiments. These acidophiles are commonly used in bioleaching of sulphide minerals, but their application on phosphorus bioleaching has been limited. Phosphorus leaching was shown to be a pH-dependant phenomenon. Phosphorus leaching yields of up to 97% and 28% were obtained in 3 weeks for low grade fluorapatite ore and concentrate, respectively. These results indicate a potential for applying bioleaching for phosphorus extraction from low grade materials.

KW - acidophilic bacteria

KW - bioleaching

KW - phosphorus

U2 - 10.4028/www.scientific.net/AMR.825.266

DO - 10.4028/www.scientific.net/AMR.825.266

M3 - Article

VL - 825

SP - 266

EP - 269

JO - Advanced Materials Research

JF - Advanced Materials Research

SN - 1022-6680

ER -