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- Title
Performance of hydrogel beads composites derived from sodium alginate-cetyltrimethylammonium bromide toward congo red dye adsorption from aqueous solution.
- Authors
Hidayat, Endar; Mohamad Sarbani, Nur Maisarah; Susanto, Helmi Baharuddin; Situngkir, Yaressa Vaskah; Chrisandi, Marchanda Wahyu; Sadaki Samitsu; Yoshiharu Mitoma; Seiichiro Yonemura; Hiroyuki Harada
- Abstract
The complex process for treating industrial wastewater frequently necessitates the employment of efficient treatment techniques to eliminate harmful contaminants before discharge, such as congo red (CR) dye. In this study, adsorption methods were utilized to eliminate CR by employing hydrogel bead composites derived from sodium alginate (SA) and cetyltrimethylammonium bromide (CTAB). Various concentrations of CTAB, including 0.1 wt%, 1 wt%, and 3 wt%, denoted as SC1, SC2, and SC3 respectively, were examined. The results demonstrated that SC3 has higher swelling percentage and lowest carboxyl group (COOH). Experiments were carried out under different pH levels, CR concentrations, and adsorption durations for removal of CR. The maximum CR adsorption capabilities of SC1, SC2, and SC3 obtained were as 141.08 mg/g, 144.50 mg/g and 153.24 mg/g for SC1, SC2 and SC3, respectively. The Freundlich and pseudo-second-order models demonstrate the best fit for both isotherm and kinetic analysis across all samples, suggesting a multilayer adsorption process and chemi- sorption mechanism. Reusability studies revealed strong performance, underscoring the hydrogel beads' potent adsorption capability for CR dye.
- Subjects
CONGO red (Staining dye); SODIUM bromide; AQUEOUS solutions; HYDROGELS; CETYLTRIMETHYLAMMONIUM bromide; SEWAGE; MANUFACTURING processes
- Publication
Desalination & Water Treatment, 2024, Vol 318, p1
- ISSN
1944-3994
- Publication type
Article
- DOI
10.1016/j.dwt.2024.100313