Innovation of high-performance adsorbent based on modified gelatin for wastewater treatment

• Published in: Polymer bulletin (Berlin, Germany) Germany), 2022-12, Vol.79 (12), p.11217-11233
• Main Authors: Elella, Mahmoud H. Abu, Aamer, Nema, Mohamed, Yasser M. A., El Nazer, Hossam A., Mohamed, Riham R.
• Format: Article
• Language: English
• Subjects: Acrylamide; Adsorbents; Adsorption; Aqueous solutions; Cationic dyes; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Complex Fluids and Microfluidics; Crosslinking; Drinking water; Dyes; Equilibrium; Fourier transforms; Free radical polymerization; Free radicals; Gelatin; Hydrogels; Itaconic acid; Malachite green; Methylene bisacrylamide; Microorganisms; Organic Chemistry; Original Paper; Physical Chemistry; Polymer Sciences; Polymerization; Polymers; Scanning electron microscopy; Soft and Granular Matter; Stability analysis; Thermal stability; Toxicity; Wastewater treatment
• ISSN: 0170-0839; 1436-2449
• DOI: 10.1007/s00289-022-04079-4

Wastewater treatment is one of the most interesting fields nowadays, especially removal of synthetic dyes from aqueous solution. For example, malachite green is considered as one the serious cationic dyes because cause tremendous damage to the human health then a series of dangerous diseases. Herein, we reported the synthesis of high-efficient novel anionic adsorbent hydrogels as gelatin- grafted -poly(acrylamide-co-itaconic acid) via free-radical polymerization by using methylenebisacrylamide, MBA, as crosslinking agent. The prepared modified gelatin hydrogels were detected via several analysis techniques: FTIR, XRD, and SEM, and thermal stability was studied by TGA technique as well. Moreover, the swellability of prepared hydrogel was examined and the data were found that maximum swelling rate % was 911% at optimum preparation conditions: 0.3 M of acrylamide and itaconic acid, 2.5 h, 5% (w/w%) of MBA, and temperature was 60 °C. Additionally, the maximum adsorption malachite green capacity by grafted gelatin hydrogels was measured as 93.5% (166.7 mg/g) in basic pH of 50 mL of MG dye solution (125 ppm) using 50 mg of hydrogels at 30 °C for 60 min. The adsorption isotherm models such as Langmuir and Freundlich for capture of dye was examined and results were well fitted with Langmuir model ( R 2  = 0.9923).