Selective separation and recovery of heavy metals from electroplating effluent using shear-induced dissociation coupling with ultrafiltration
| Autor: | Yun-Ren Qiu, Shu-Yun Tang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Environmental Engineering
Materials science Maleic acid Health Toxicology and Mutagenesis Metal ions in aqueous solution 0208 environmental biotechnology Inorganic chemistry Ultrafiltration chemistry.chemical_element 02 engineering and technology Zinc 010501 environmental sciences 01 natural sciences Dissociation (chemistry) chemistry.chemical_compound Metals Heavy Environmental Chemistry Electroplating 0105 earth and related environmental sciences Acrylic acid Public Health Environmental and Occupational Health General Medicine General Chemistry Pollution Copper 020801 environmental engineering Nickel chemistry |
| Zdroj: | Chemosphere. 236:124330 |
| ISSN: | 0045-6535 |
| DOI: | 10.1016/j.chemosphere.2019.07.061 |
| Popis: | Shear-induced dissociation coupling with ultrafiltration (SID-UF) is an efficient and environment-friendly technology for the separation of heavy metal ions. In this paper, SID-UF was successfully employed for the selective recovery of nickel, zinc and copper from electroplating effluent using poly (acrylic acid) sodium (PAAS) and copolymer of maleic acid and acrylic acid (PMA) as complexants, respectively. The effects of the pH, mass ratio of polymer to metal ions (P/M) and the rotating speed on the metals removal efficiency are discussed in detail. The shear stabilities of the polymer-metal complexes were explored and the complexes critical shear rates (γc) were calculated. The results show that the order of the shear stabilities of PAA-metal complex is PAA-Zn > PAA-Cu > PAA-Ni, and that of PMA-metal complex is PMA-Cu > PMA-Ni > PMA-Zn. In addition, the construction of the stable structures of complexes and the calculation of the energies of the frontier molecular orbital by density functional theory method further predict and confirm the shear stabilities of the polymer-metal complexes. |
| Databáze: | OpenAIRE |
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