Abstract
Nickel is a toxic metal ion present in industrial wastewater. In this study, ion flotation combined with multi-walled carbon nanotubes (MWCNTs) adsorbent experiments was performed to investigate the removal of nickel ions from aqueous solution. Various parameters such as aeration time, sodium dodecyl sulfate and MWCNTs concentrations, pH, surfactant, frother concentrations and airflow rate were tested to determine the optimum flotation conditions. Sodium dodecyl sulfate was used as collectors. Ethanol was used as frother. In the airflow of 150 mL/min and after 5, 15, 30, 60, 90 and 120 min of ion flotation with MWCNTs adsorbent, the efficiency of nickel removal was 14, 24, 33, 38, 44 and 48, respectively. The maximum reduction in the concentration of nickel occurs at 30 mg/L concentration (with removal efficiency of 71.7). This method reduces the time to reach equilibrium point and increases the minimum concentration to adsorb. The results show that the combination of ion flotation method and adsorption with MWCNT works well for reduction in the concentrations of compounds such heavy metal ions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
