Fabrication of Magnetic Chitosan-Benzil Biopolymer with Organoclay for Remazol Brilliant Blue R Dye Removal: a Statistical Modeling and Adsorption Mechanism

• Published in: Journal of inorganic and organometallic polymers and materials 2024, Vol.34 (9), p.4450-4462
• Main Authors: Jawad, Ali H., Abdulhameed, Ahmed Saud, Hapiz, Ahmad, Musa, Salis Awal, Wu, Ruihong, ALOthman, Zeid A.
• Format: Article
• Language: English
• Subjects: Adsorbents; Adsorption; Aquatic environment; Benzil; Biomedical materials; Biopolymers; Chemistry; Chemistry and Materials Science; Chitosan; Composite materials; Dosage; Dyes; Inorganic Chemistry; Iron oxides; Organic Chemistry; Polymer Sciences; Statistical models; Water purification
• ISSN: 1574-1443; 1574-1451
• DOI: 10.1007/s10904-024-03120-5

In this work, a magnetic cross-linked chitosan-benzil/organoclay/Fe 3 O 4 biocomposite (CHI-BZI/OC/Fe 3 O 4 ) was synthesized as a bio-adsorbent for the removal of remazol brilliant blue R (RBBR) dye from aquatic environment. The adsorption factors i.e., CHI-BZI/OC/Fe 3 O 4 dosage, pH, and time were statistically optimized using the Box-Behnken design (BBD). The highest RBBR removal efficiency of 90.9% was achieved at a CHI-BZI/OC/Fe 3 O 4 dosage of 0.1 g/100 mL, initial solution pH of 4.0, and contact time of 20 min. The RBBR adsorption onto the CHI-BZI/OC/Fe 3 O 4 matched the pseudo-second-order kinetic (PSO). Moreover, equilibrium study was conducted and the best fit to the adsoption expsrimantal data was described by Langmuir isotherm model. The adsorption capacity of CHI-BZI/OC/Fe 3 O 4 for RBBR was determined to be 102.9 mg/g. This work contributes to the advancement of environmentally friendly and sustainable methods for treating dye-contaminated water, showcasing the potential of biocomposite materials as effective adsorbents in the field of water purification.