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Original title:
Use of iron nanoparticles for post-treatment of metal finishing wastewater
Authors: Matysíková, J. ; Sukopová, M. ; Škvoran, O. ; Holba, Marek
Document type: Papers
Conference/Event: NANOCON 2014. International Conference /6./, Brno (CZ), 2014-11-05 / 2014-11-07
Year: 2015
Language: eng
Abstract: This study evaluated the efficiency of copper, nickel and zinc removal from industrial metal finishing wastewater using nZVI material in lab and pilot scale conditions. Initial concentrations of Cu, Ni and Zn in raw wastewater were 3.16 mg/L, 0.38 mg/L and 0.56 mg/L, respectively. All metals were presented in residual concentrations and difficult to remove. Copper concentration was lowered by 77.2% in lab scale and 85.2% in pilot scale test for nZVI dose of 400 mg/L after 3 hours of reaction. Removal efficiency of nickel was 51% in the lab scale and 85.2 % at the pilot scale. Decrease of zinc concentration was less significant and reached 35.4% and 40% in lab and pilot scale experiment, respectively. Increase of efficiency in pilot scale testing was caused by the application of nZVI under inert atmosphere which ensured the preservation of high iron reactivity. pH adjustment before the nZVI dosing had also significant influence for efficiency of reaction. No changes and fluctuations of temperature and conductivity were observed. Pilot-scale test with lower dose of nZVI was performed to reveal the surpluses of previous dose of iron. The dose of 300 mg nZVI/L was applied into the reactor under inert atmosphere with pH adjustment before iron dosing. Efficiency of metals removal dropped to the 70% and 70.1% for copper and nickel. Efficiency of zinc removal increased to the 60.5%. nZVI dose of 300 mg/L was sufficient for reaching of limits for wastewater discharge.
Keywords: copper and nickel removal; metal finishing wastewater; zerovalent iron nanoparticles
Project no.: FR-TI3/196 (CEP)
Funding provider: GA MPO
Host item entry: NANOCON 2014, 6th International Conference, ISBN 978-80-87294-53-6
Institution: Institute of Botany AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0248707
Permalink: http://www.nusl.cz/ntk/nusl-189253
The record appears in these collections:
Research > Institutes ASCR > Institute of Botany
Conference materials > Papers
Authors: Matysíková, J. ; Sukopová, M. ; Škvoran, O. ; Holba, Marek
Document type: Papers
Conference/Event: NANOCON 2014. International Conference /6./, Brno (CZ), 2014-11-05 / 2014-11-07
Year: 2015
Language: eng
Abstract: This study evaluated the efficiency of copper, nickel and zinc removal from industrial metal finishing wastewater using nZVI material in lab and pilot scale conditions. Initial concentrations of Cu, Ni and Zn in raw wastewater were 3.16 mg/L, 0.38 mg/L and 0.56 mg/L, respectively. All metals were presented in residual concentrations and difficult to remove. Copper concentration was lowered by 77.2% in lab scale and 85.2% in pilot scale test for nZVI dose of 400 mg/L after 3 hours of reaction. Removal efficiency of nickel was 51% in the lab scale and 85.2 % at the pilot scale. Decrease of zinc concentration was less significant and reached 35.4% and 40% in lab and pilot scale experiment, respectively. Increase of efficiency in pilot scale testing was caused by the application of nZVI under inert atmosphere which ensured the preservation of high iron reactivity. pH adjustment before the nZVI dosing had also significant influence for efficiency of reaction. No changes and fluctuations of temperature and conductivity were observed. Pilot-scale test with lower dose of nZVI was performed to reveal the surpluses of previous dose of iron. The dose of 300 mg nZVI/L was applied into the reactor under inert atmosphere with pH adjustment before iron dosing. Efficiency of metals removal dropped to the 70% and 70.1% for copper and nickel. Efficiency of zinc removal increased to the 60.5%. nZVI dose of 300 mg/L was sufficient for reaching of limits for wastewater discharge.
Keywords: copper and nickel removal; metal finishing wastewater; zerovalent iron nanoparticles
Project no.: FR-TI3/196 (CEP)
Funding provider: GA MPO
Host item entry: NANOCON 2014, 6th International Conference, ISBN 978-80-87294-53-6
Institution: Institute of Botany AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0248707
Permalink: http://www.nusl.cz/ntk/nusl-189253
The record appears in these collections:
Research > Institutes ASCR > Institute of Botany
Conference materials > Papers
Record created 2015-09-02, last modified 2022-09-29