Abstract
A novel technology, shear induced dissociation coupling with ultrafiltration (SID-UF), is used to for the treatment of lead contained wastewater for the first time. Two kinds of water soluble polymer, poly(acrylic acid) sodium (PAAS) and copolymer of maleic acid and acrylic acid (PMA), are used as complexants. The mass ratio of polymer to metal ions (P/M), pH and rotary speed are optimized by full recycle processes. The experimental results reveal that the critical shear rate of the PMA-Pb complex is less than that of the PAA-Pb complex at the same pH, that is to say, PMA-Pb complex is less stable than PAA-Pb complex in the shear field. The velocity field and shear field are simulated by CFD. Moreover, the quantum chemical computation and the frontier molecular orbitals also demonstrates that the PMA-Pb complex shows a lower energy gap than that of PAA-Pb complex. Furthermore, the reuse of complexant is achieved by shear enhance diafiltration. PMA is better for the treatment of lead contained wastewater by SID-UFdue to its higher load capacity of Pb (II) and easier regeneration.
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.
