Decontamination of Fuchsin dye by carboxymethyl cellulose-graft-poly(acrylic acid-co-itaconic acid)/carbon black nanocomposite hydrogel

Parisa Mohammadzadeh Pakdel; Seyed Jamaleddin Peighambardoust; Rauf Foroutan; Nasser Arsalani; Hassan Aghdasinia

doi:10.1016/j.ijbiomac.2022.10.007

Decontamination of Fuchsin dye by carboxymethyl cellulose-graft-poly(acrylic acid-co-itaconic acid)/carbon black nanocomposite hydrogel

Int J Biol Macromol. 2022 Dec 1;222(Pt B):2083-2097. doi: 10.1016/j.ijbiomac.2022.10.007. Epub 2022 Oct 10.

Authors

Parisa Mohammadzadeh Pakdel¹, Seyed Jamaleddin Peighambardoust², Rauf Foroutan¹, Nasser Arsalani³, Hassan Aghdasinia¹

Affiliations

¹ Faculty of Chemical and Petroleum Engineering, University of Tabriz, Tabriz 5166616471, Iran.
² Faculty of Chemical and Petroleum Engineering, University of Tabriz, Tabriz 5166616471, Iran. Electronic address: j.peighambardoust@tabrizu.ac.ir.
³ Research Laboratory of Polymer, Department of Organic and Biochemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran.

PMID: 36228810
DOI: 10.1016/j.ijbiomac.2022.10.007

Abstract

In the present work, carboxymethyl cellulose (CMC) was used to develop hydrogels as adsorbents for wastewater treatment applications due to its surface functionality and modifiable characteristics. Hydrogels (Hyd) were synthesized by grafting copolymers of acrylic acid (AA) and itaconic acid (IA) onto the CMC backbone by free radical polymerization method in order to remediate Fuchsin from aqueous solution. The presence of CMC in copolymer hydrogel of AA and IA (Poly(AA-co-IA)) up to 14.29 wt% enhances equilibrium swelling and removal efficiency. Different novel nanocomposite hydrogel samples were prepared by varying weight percentages of carbon black (CB) nanoparticles in the range of 0 to 12.5 wt%. The addition of CB up to 5 wt% enhanced the swelling and removal efficiency of the Hyd. Brunauer-Emmett-Teller (BET) test gave the surface area of 0.615, and 0.890 m²/g for Hyd and Hyd/CB, respectively, indicating that incorporation of CB led to a significant increase in Hyd surface area. The Maximum removal efficiency of Fuchsin under the optimum conditions was obtained to be 83.33, 93.54, and 98.76 % for Poly(AA-co-IA), Hyd, and Hyd/CB, respectively. The kinetic study showed that the pseudo-second-order is the best-fitted model. Isotherm studies showed that equilibrium data have a good fitness with the Langmuir model with R² of 0.978, 0.992, and 0.982 for Poly(AA-co-IA), Hyd, and Hyd/CB, respectively. The Langmuir model gave an adsorption capacity of 26.99, 31.6, and 33.75 mg/g for Poly(AA-co-IA), Hyd, and Hyd/CB, respectively. Also, the value of n and R_L parameters demonstrated that the adsorption process is physical and favorable for adsorbents. The study of thermodynamic parameters illustrated that the adsorption of Fuchsin using adsorbents is a spontaneous, exothermic, and entropy-decreasing process. Regeneration study showed that CMC-based hydrogels have higher performance in ad(de)sorption cycles than Poly(AA-co-IA) and the addition of CB to the Hyd matrix enhances reusability. Overall, Hyd and Hyd/CB can be used as promising adsorbents for the remediation of Fuchsin due to high swelling and adsorption capability.

Keywords: Adsorbent; Carbon black; Carboxymethyl cellulose; Fuchsin; Nanocomposite hydrogel; Wastewater treatment.

MeSH terms

Adsorption
Carboxymethylcellulose Sodium*
Decontamination
Hydrogels
Hydrogen-Ion Concentration
Kinetics
Nanogels
Polymers
Rosaniline Dyes
Soot
Water Pollutants, Chemical*

Substances

Carboxymethylcellulose Sodium
acrylic acid
Rosaniline Dyes
Nanogels
Soot
itaconic acid
Water Pollutants, Chemical
Hydrogels
Polymers