TY - JOUR
T1 - Evaluation of hematite and quartz flotation kinetics using surfactant produced by rhodococcus erythropolis as bioreagent
AU - Olivera, Carlos Alberto Castañeda
AU - Merma, Antonio Gutiérrez
AU - Torem, Maurício Leonardo
N1 - Funding Information:
We gratefully acknowledge the financial support of CNPq, CAPES and ITV-Vale. The authors also thank PUC-Rio for the infrastructure of the Mineral and Environ-mental Technology Laboratory and CETEM for the chemical analysis of the minerals.
Funding Information:
We gratefully acknowledge the finan cial support of CNPq, CAPES and ITV-Vale.
Publisher Copyright:
© 2019, Escola de Minas. All rights reserved.
PY - 2019/10/1
Y1 - 2019/10/1
N2 - The use of biosurfactants as reagents represents a promising alternative to the conventional surfactants used in the mineral industry because they may present low toxicity and high biodegradability. Therefore, this research studied the hematite and quartz flotation kinetics using surfactant produced by Rhodococcus erythropolis as bioreagent. The flotation kinetics of both minerals were evaluated under established conditions: biosurfactant concentration of 10 mg/L and solution pH of 3. The maximum floatability values were of 99.98% and 17.53% for hematite and quartz, respectively, after 2 minutes of flotation. Finally, the kinetics study indicated that the experimental data of hematite floatability was better fitted to both the first and non-integral order kinetics, while the experimental data of quartz floatability was better fitted to the non-integral order kinetic.
AB - The use of biosurfactants as reagents represents a promising alternative to the conventional surfactants used in the mineral industry because they may present low toxicity and high biodegradability. Therefore, this research studied the hematite and quartz flotation kinetics using surfactant produced by Rhodococcus erythropolis as bioreagent. The flotation kinetics of both minerals were evaluated under established conditions: biosurfactant concentration of 10 mg/L and solution pH of 3. The maximum floatability values were of 99.98% and 17.53% for hematite and quartz, respectively, after 2 minutes of flotation. Finally, the kinetics study indicated that the experimental data of hematite floatability was better fitted to both the first and non-integral order kinetics, while the experimental data of quartz floatability was better fitted to the non-integral order kinetic.
KW - Biosurfactant
KW - Flotation
KW - Hematite
KW - Kinetic
KW - Quartz
UR - http://www.scopus.com/inward/record.url?scp=85076517620&partnerID=8YFLogxK
U2 - 10.1590/0370-44672018720162
DO - 10.1590/0370-44672018720162
M3 - Article
AN - SCOPUS:85076517620
SN - 0370-4467
VL - 72
SP - 655
EP - 659
JO - Revista Escola de Minas
JF - Revista Escola de Minas
IS - 4
ER -