Amino-Functionalized Cellulose Nanofiber/Lignosulfonate New Aerogel Adsorbent for the Removal of Dyes and Heavy Metals from Wastewater
Overview
Affiliations
Due to the increasingly widespread water pollutants and the high cost of treatment methods, there is a demand for new, inexpensive, renewable, and biodegradable adsorbent materials for the purification of wastewater contaminants. In this study, a new biocomposite aerogel (Amf-CNF/LS) was prepared using a chemically cross-linking method between the amino-functionalized cellulose nanofibers (Amf-CNF) and lignosulfonates (LS). The physical and chemical properties of the prepared aerogel were investigated using several techniques including elemental analysis, scanning electron microscopy (SEM-EDS), Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), and N adsorption-desorption analysis. The Amf-CNF/LS aerogel was then applied for the removal of methylene blue (MB), rhodamine B dye (RhB), and the heavy metal cadmium ion (Cd) from synthetic wastewater solutions. The adsorption parameters controlling the adsorption process including the pH, contact time, adsorbent dosage, and adsorbate concen-tration were optimized. High adsorption kinetics and isotherms were observed, with the adsorption isotherms of the Amf-CNF/LS aerogel fitting the Langmuir model with maximum adsorption capacities of 170.94, 147.28, and 129.87 mg/g for MB, RhB, and Cd, respectively. These results show that Amf-CNF/LS aerogel is a promising green and inexpensive adsorbent for MB, RhB, and Cd removal from wastewater.
Silicon-Enhanced PVA Hydrogels in Flexible Sensors: Mechanism, Applications, and Recycling.
Guo X, Zhang H, Wu M, Tian Z, Chen Y, Bao R Gels. 2024; 10(12).
PMID: 39727546 PMC: 11675336. DOI: 10.3390/gels10120788.
Tariq R, Abatal M, Vargas J, Vazquez-Sanchez A Sci Rep. 2024; 14(1):20250.
PMID: 39215127 PMC: 11364776. DOI: 10.1038/s41598-024-70989-0.
Lotfy V, Basta A Sci Rep. 2024; 14(1):15236.
PMID: 38956097 PMC: 11219910. DOI: 10.1038/s41598-024-65136-8.
Amen R, Elsayed I, Schueneman G, Hassan E Gels. 2024; 10(1).
PMID: 38275851 PMC: 10815620. DOI: 10.3390/gels10010077.
Bacterial Cellulose Aerogels Derived from Pineapple Peel Waste for the Adsorption of Dyes.
Le H, Dao N, Bui H, Kim Le P, Le K, Tuong Tran A ACS Omega. 2023; 8(37):33412-33425.
PMID: 37744831 PMC: 10515182. DOI: 10.1021/acsomega.3c03130.