Eco-friendly inorganic-organic bionanocomposite (Copper oxide — Carboxyl methyl cellulose — Guar gum): Preparation and effective removal of dye from aqueous solution

• Published in: The Korean journal of chemical engineering Vol. 39; no. 8; pp. 2138 - 2147
• Main Authors: Naeini, Ali Hosseinian, Kalaee, Mohammadreza, Moradi, Omid, Khajavi, Ramin, Abdouss, Majid
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-08-2022; Springer Nature B.V; 한국화학공학회
• Subjects: Adsorption; Aqueous solutions; Biopolymers; Biotechnology; Catalysis; Cellulose; Chemistry; Chemistry and Materials Science; Copper oxides; Dyes; Environmental Engineering; Guar gum; Industrial Chemistry/Chemical Engineering; Isotherms; Malachite green; Materials Science; Nonuniformity; Pollutants; Process parameters; 화학공학; Eco-friendly Bionanocomposite; Malachite Green; Dye Removal; Ternary Inorganic-organic Composite; Binary Organic Composite
• ISSN: 0256-1115; 1975-7220
• DOI: 10.1007/s11814-022-1074-7

Biopolymers, such as Carboxyl methylcellulose (CMC) and Guar gum (GG), have attracted much attention. Herein, binary organic composite (Carboxyl methyl cellulose — Guar gum) and ternary inorganic-organic eco-friendly bionanocomposite (Copper oxide — Carboxyl methyl cellulose — Guar gum) with different wt% of CuO (1%, 3%, and 5% denoted as CMC/GG/CuO-1, CMC/GG/CuO-3, and CMC/GG/CuO-5) were prepared. The CMC, GG, CuO, CMC/GG, CMC/GG/CuO-1, CMC/GG/CuO-3, and CMC/GG/CuO-5 were characterized by XRD, FTIR, SEM, and EDX and used to remove malachite green (MG) dye from water. The effect of operational parameters on the adsorption process was investigated in detail. The maximum dye capacity was 18.5 mg/g. The isotherm data showed the Freundlich isotherm, which indicated the non-uniformity of adsorption on the adsorbent surface. Pollutant removal followed the pseudo-second-order kinetics. Also, the thermodynamic study presented that adsorption was spontaneous and endothermic.