Insights into the adsorption of emerging organic contaminant by low-cost readily separable modified jute fiber

• Published in: Environmental science and pollution research international Vol. 31; no. 52; pp. 61763 - 61780
• Main Authors: El-kelany, Sara M., Radwan, Emad K., Abdel-Monem, Yasser K.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.11.2024; Springer Nature B.V
• Subjects: Adsorption; Ammonium; Ammonium chloride; Aquatic Pollution; Aqueous solutions; Atmospheric Protection/Air Quality Control/Air Pollution; Contaminants; Diclofenac; Distilled water; Earth and Environmental Science; Ecotoxicology; Environment; Environmental Chemistry; Environmental Health; Grafting; Grooves; Jute; Monomolecular films; Multilayers; Nonsteroidal anti-inflammatory drugs; Organic contaminants; Oxygen content; Porosity; Research Article; Sodium chloride; Sodium hydroxide; Surface area; Waste Water Technology; Water Management; Water Pollution Control; Diclofenac sodium; Surface modification; Alkoxysilanes; Natural organic fibers; Alkali treatment
• ISSN: 1614-7499; 0944-1344; 1614-7499
• DOI: 10.1007/s11356-024-35295-2

A high-efficiency biosorbent based on the low-priced jute fiber was developed, characterized, and applied to remove the emerging organic contaminant diclofenac from aqueous solutions. Jute fiber was treated by NaOH (named AJF) followed by grafting different amounts of trimethyl[3-(trimethoxysilyl) propyl] ammonium chloride (named AJF-TTSAC). The composition, morphology, porosity, and adsorption features of the neat and modified jute fiber were evaluated and compared. The surface of neat JF was smooth, nonporous, and free of cracks. NaOH treatment increased the fibrillation, created cracks and grooves, and increased the oxygen content, total pore volume, and surface area. In comparison to AJF, grafting TTSAC filled in the crevices, grooves, and spaces between fibrillates, and decreased the total pore volume and surface area. The adsorption of diclofenac by the neat and modified JF occurred at highly acidic pH o and peaked at pH o 3. Among the neat and modified JF, AJF-TTSAC 5 was the most efficient followed by AJF. The efficiency of AJF and AJF-TTSAC 5 was highest using 1.00 g/L, at 35 °C and was not affected by the presence of NaCl. The Elovich, pseudo-first-order, and pseudo-second-order models described the adsorption kinetic satisfactorily with the marginal advantage of Elovich for AJF and pseudo-second-order for AJF-TTSAC 5 . The isotherm study exposed the multilayer and physisorption nature of the adsorption of diclofenac onto AJF and AJF-TTSAC 5 . The Langmuir monolayer saturation capacity of AJF-TTSAC 5 was 37.43 mg/g which revealed its great potential relative to other adsorbents in the literature. The AJF and AJF-TTSAC 5 were easily regenerated using distilled water and kept good performance for 5 repetitive cycles.