نوع مقاله : مقاله علمی پژوهشی
نویسندگان
1 گروه شیمی، واحد علوم تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران
2 دانشگاه آزاد اسلامی واحد کرج- دانشکده علوم- گروه شیمی –البرز-ایران
3 گروه شیمی، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران
4 گروه شیمی، واحد تهران جنوب، دانشگاه آزاد اسلامی، تهران، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
In this research, a calcium-ion crosslinked cryogel based on Bassorin and graphene oxide (GO-BR) was prepared and examined for its potential to eliminate crystal violet (CV) from aqueous solutions. The cryogel was obtained through a straightforward freeze-drying technique and its structural and physicochemical properties were analyzed by multiple methods, including X-ray diffraction (XRD) to study crystallinity, field emission scanning electron microscopy (FESEM) to observe morphology, Fourier-transform infrared spectroscopy (FTIR) for functional groups, and Brunauer–Emmett–Teller (BET) analysis for surface area estimation. The adsorption efficiency was assessed under diverse conditions such as contact duration, starting dye level, pH value, temperature, and sorbent dosage. Results demonstrated that the GO-BR cryogel achieved a maximum uptake capacity of 200.08 mg/g. Kinetic investigations showed that the pseudo-first-order model best described the adsorption process, while the equilibrium behavior followed the Langmuir isotherm. Furthermore, the material sustained high removal efficiency through five successive regeneration cycles. Overall, GO-BR emerges as an environmentally friendly and biodegradable sorbent with strong prospects for scalable application in dye-contaminated wastewater treatment and industrial purification systems.
کلیدواژه‌ها [English]
)