TY - JOUR
T1 - Hyperbranched polyethyleneimine tailored microcrystalline cellulose isolated from Abelmoschus Esculentus biofibers for wastewater remediation
AU - Joshi, Shriya
AU - Chandel, Ridhi
AU - Guleria, Ashish
AU - Collins, Maurice N.
AU - Singh, Kulvinder
AU - Kumari, Garima
AU - Kumar, Dinesh
AU - Patra, Bijaylaxmi
AU - Sinha, Neeraj
N1 - Publisher Copyright:
© The Author(s), under exclusive licence to Springer Nature B.V. 2025.
PY - 2026/1
Y1 - 2026/1
N2 - The development of hyperbranched cellulose for wastewater remediation is of great interest due to their eco-friendly and cost-effective advantages. Considering this, the present work reports the tailoring of microcrystalline cellulose (MCC) with hyperbranched polyethyleneimine (HPEI) and investigates its potential as an adsorbent for wastewater remediation. A graft copolymerization reaction of MCC was carried out with the glycidyl methacrylate monomer, yielding a maximum graft yield of 89.28% after 120 min at a temperature of 45 °C. HPEI-tailored-MCC was then synthesized by the reaction of grafted MCC and HPEI at 60 °C. MCC-grafted and HPEI-tailored samples were validated using FT-IR, 13C NMR, SEM, XRD, TGA, and BET techniques. BET analysis of MCC and the adsorbent confirmed its mesoporous structure, as there was a decrease in the surface area of the adsorbent. The surface area of MCC was 247.64 m2/g, whereas that of HPEI-tailored-MCC was 78.90 m2/g. The point zero charge (PZC) of the adsorbent was determined to be 7.7, and the maximum dye removal occurred at acidic pH. HPEI-tailored-MCC was used as an adsorbent for the quick and effective removal of tartrazine (TA) and amaranth (AMR) acidic organic dye pollutants from wastewater. Different adsorption factors, namely, adsorbent dosage, initial dye concentration, contact time, pH, and adsorbent regeneration, were studied during the adsorption process. It was found that 80% of both dye pollutants were removed within 5 min of adsorption, and equilibrium was achieved within 15 min. Adsorption data were evaluated by non-linear fittings for both kinetics and isotherm studies. The adsorption isotherm profile followed the Redlich-Peterson isotherm model for amaranth dye and the Tempkin model for tartrazine dye. At a 200 mg/L dye concentration, HPEI-tailored-MCC adsorbent exhibited a maximum adsorption capacity of 155.71 mg/g for TA and 92.45 mg/g for AMR, respectively.
AB - The development of hyperbranched cellulose for wastewater remediation is of great interest due to their eco-friendly and cost-effective advantages. Considering this, the present work reports the tailoring of microcrystalline cellulose (MCC) with hyperbranched polyethyleneimine (HPEI) and investigates its potential as an adsorbent for wastewater remediation. A graft copolymerization reaction of MCC was carried out with the glycidyl methacrylate monomer, yielding a maximum graft yield of 89.28% after 120 min at a temperature of 45 °C. HPEI-tailored-MCC was then synthesized by the reaction of grafted MCC and HPEI at 60 °C. MCC-grafted and HPEI-tailored samples were validated using FT-IR, 13C NMR, SEM, XRD, TGA, and BET techniques. BET analysis of MCC and the adsorbent confirmed its mesoporous structure, as there was a decrease in the surface area of the adsorbent. The surface area of MCC was 247.64 m2/g, whereas that of HPEI-tailored-MCC was 78.90 m2/g. The point zero charge (PZC) of the adsorbent was determined to be 7.7, and the maximum dye removal occurred at acidic pH. HPEI-tailored-MCC was used as an adsorbent for the quick and effective removal of tartrazine (TA) and amaranth (AMR) acidic organic dye pollutants from wastewater. Different adsorption factors, namely, adsorbent dosage, initial dye concentration, contact time, pH, and adsorbent regeneration, were studied during the adsorption process. It was found that 80% of both dye pollutants were removed within 5 min of adsorption, and equilibrium was achieved within 15 min. Adsorption data were evaluated by non-linear fittings for both kinetics and isotherm studies. The adsorption isotherm profile followed the Redlich-Peterson isotherm model for amaranth dye and the Tempkin model for tartrazine dye. At a 200 mg/L dye concentration, HPEI-tailored-MCC adsorbent exhibited a maximum adsorption capacity of 155.71 mg/g for TA and 92.45 mg/g for AMR, respectively.
KW - C-NMR
KW - Hyperbranched polymer
KW - Microcrystalline cellulose
KW - Organic pollutants
KW - Polyethyleneimine
KW - Wastewater remediation
UR - https://www.scopus.com/pages/publications/105024011763
U2 - 10.1007/s10570-025-06879-z
DO - 10.1007/s10570-025-06879-z
M3 - Article
AN - SCOPUS:105024011763
SN - 0969-0239
VL - 33
SP - 417
EP - 441
JO - Cellulose
JF - Cellulose
IS - 1
ER -