Experimental study on the performance of modified flocculant (PEI-T) for removal of turbidity and heavy metals from aqueous solution
The current study was focused on the evaluation of the performance of a modified flocculant (PEI-T) for the removal of turbidity and heavy metals from wastewater. Thioglycolic acid was introduced into the molecular chain of cationic flocculant polyethyleneimine (PEI) through an amidation reaction to...
Guardado en:
| Autores principales: | , |
|---|---|
| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
IWA Publishing
2021
|
| Materias: | |
| Acceso en línea: | https://doaj.org/article/0a311afd73d4405381477b70e00a82a9 |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| Sumario: | The current study was focused on the evaluation of the performance of a modified flocculant (PEI-T) for the removal of turbidity and heavy metals from wastewater. Thioglycolic acid was introduced into the molecular chain of cationic flocculant polyethyleneimine (PEI) through an amidation reaction to form a new flocculant PEI-T. Results revealed that: (a) PEI-T and PEI had similar turbidity removal effect, but PEI-T had a good function of catching heavy metal copper and mercury; (b) when Cu2+ and turbidity-causing substances coexist in a water sample, Cu2+ and turbidity-causing substances promote the removal of each other and the residual concentration of Cu2+ and turbidity decrease further; and (c) the presence of Ca2+ and Mg2+ can promote the removal of copper ions by PEI-T. HIGHLIGHTS
Modified flocculant (PEI-T) was evaluated for removal of turbidity and heavy metals from wastewater.;
Thioglycolic acid was introduced into the molecular chain of cationic flocculant polyethyleneimine (PEI) to form a new flocculant, PEI-T.;
These flocculants had similar turbidity removal effect.;
Cu2+ and turbidity-causing substances promote their removal when Cu2+ and turbidity-causing substances coexist.; |
|---|