1. PolyDADMAC-mediated aggregation of newly formed iron oxides: Implications for the removal of iron from aqueous solutions
- Author
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Chinh T. Tran, Huan X. Nguyen, Khai M. Nguyen, Anh Tuan Nguyen, and Minh N. Nguyen
- Subjects
Range (particle radiation) ,Aqueous solution ,Chemistry ,Inorganic chemistry ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Surfaces, Coatings and Films ,Colloid ,chemistry.chemical_compound ,Colloid and Surface Chemistry ,Materials Chemistry ,Ph range ,Zeta potential ,PolyDADMAC ,Surface charge ,Physical and Theoretical Chemistry ,0210 nano-technology ,Biotechnology - Abstract
This study aimed to identify the effects of a low cost polycation, i.e., polyDADMAC (PD), on the aggregation of newly formed Fe oxides. An evaluation was performed over a wide range of pH values and PD concentrations using combined zeta potential and aggregation measurements. PD adsorbs on the surface of the newly formed Fe oxides, altering their surface charge to less negative values, favouring colloidal aggregation. In the absence of PD, aggregation of the newly formed Fe oxides was favoured in a narrow pH range (i.e., 5–6), whereas the presence of PD resulted in faster aggregation over the entire pH range of 3 to 11. In general, PD showed more obvious efficacy at alkaline pH values, and its performance decreased at pH
- Published
- 2020
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