Abstract
A new process for the desorption and separation of heavy metal cations from different polymeric bonding agents using electrodialysis with bipolar membranes was studied. To this end a membrane stack for the electrodialysis process, consisting of bipolar and cation exchanger membranes arranged in alternating order, was set up. In this study, four water-soluble bonding agents, carboxymethyl cellulose (CMC), pectine (PEC), polyethylenimine (PEI) and a newly developed dendritic benzoylthiourea-functionalised polyamidoamine derivate (DENBT) as well as a powdered cation exchanger (CEX) were used as polymeric bonding agents. The main focus centres on tests to determine the regeneration properties of these polymeric bonding agents. The regeneration rates as well as the electric resistance values of the membrane stack were determined for every bonding agent loaded with copper cations. Furthermore, the regeneration rates for CMC loaded with the different metal cations Cu 2+, Ni 2+, Co 2+ and Pb 2+ were determined.
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.
