Abstract
| Language | English |
|---|---|
| Pages | 16-29 |
| Journal | Soil and Sediment Contamination: An International Journal |
| Volume | 24 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2015 |
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Metal Removal from Contaminated Soils Trough Bioleaching with Oxidizing Bacteria and Rhamnolipid Biosurfactants. / Diaz, Mayri A.; de Ranson, Isora Urdaneta; Dorta, Blas Dorta; Banat, Ibrahim; Blazquez, Maria L.; Gonzalez, Felisa; Muñoz, Jesús A.; Ballester, Antonio.
In: Soil and Sediment Contamination: An International Journal, Vol. 24, No. 1, 01.2015, p. 16-29.Research output: Contribution to journal › Article
TY - JOUR
T1 - Metal Removal from Contaminated Soils Trough Bioleaching with Oxidizing Bacteria and Rhamnolipid Biosurfactants
AU - Diaz, Mayri A.
AU - de Ranson, Isora Urdaneta
AU - Dorta, Blas Dorta
AU - Banat, Ibrahim
AU - Blazquez, Maria L.
AU - Gonzalez, Felisa
AU - Muñoz, Jesús A.
AU - Ballester, Antonio
PY - 2015/1
Y1 - 2015/1
N2 - The use of surfactants as a method for solubilisation and removal of heavy metal contaminationfrom soil has been reported before. Biosurfactants produced by some microorganisms are able tomodify the surface of various metals and aggregate on interphases favouring metal separationprocess from contaminated environments. We evaluated the feasibility of enhancing the removalof metal ions from a mineral waste/contaminated soils using alternate cycles of treatment withrhamnolipid biosurfactants and bioleaching with amixed bacterial culture of Acidithiobacillusthiooxidans and Acidithiobacillus ferrooxidans. Bioleaching alone removed 50% Zn and 19%Fe. When rhamnolipids was used at low concentration (0.4 mg/mL) 11% Fe and 25% Zn wereremoved while at 1 mg/mL 19% Fe and 52% Zn removal were achieved. When using a cyclictreatment combining bioleaching and biosurfactants, metal removal reached up to 36% for Feand 63% to 70% for Zn.
AB - The use of surfactants as a method for solubilisation and removal of heavy metal contaminationfrom soil has been reported before. Biosurfactants produced by some microorganisms are able tomodify the surface of various metals and aggregate on interphases favouring metal separationprocess from contaminated environments. We evaluated the feasibility of enhancing the removalof metal ions from a mineral waste/contaminated soils using alternate cycles of treatment withrhamnolipid biosurfactants and bioleaching with amixed bacterial culture of Acidithiobacillusthiooxidans and Acidithiobacillus ferrooxidans. Bioleaching alone removed 50% Zn and 19%Fe. When rhamnolipids was used at low concentration (0.4 mg/mL) 11% Fe and 25% Zn wereremoved while at 1 mg/mL 19% Fe and 52% Zn removal were achieved. When using a cyclictreatment combining bioleaching and biosurfactants, metal removal reached up to 36% for Feand 63% to 70% for Zn.
U2 - 10.1080/15320383.2014.907239
DO - 10.1080/15320383.2014.907239
M3 - Article
VL - 24
SP - 16
EP - 29
JO - Soil and Sediment Contamination
T2 - Soil and Sediment Contamination
JF - Soil and Sediment Contamination
SN - 1532-0383
IS - 1
ER -