Publication Type : Conference Proceedings
Publisher : Materials Today
Source : Materials Today: Proceedings (2020)
Url : https://www.sciencedirect.com/science/article/pii/S2214785320359332
Keywords : Amine functionalization, Atrazine removal, Carbon dots, Cellulose sponge, Herbicide removal
Campus : Coimbatore
School : School of Engineering
Department : Sciences
Year : 2020
Abstract : A novel adsorbent material has been synthesized using biodegradable precursor materials for the removal of endocrine disrupting herbicide atrazine from water. Carbon dots (CDs) were synthesized via a simple hydrothermal method from dates. The synthesized carbon dots were analyzed by FT-IR, UV and PL studies. In the following step, carbon dots were coated on an amine functionalized cellulose sponge (AF-CS) and the carbon dots coated on amine functionalized cellulose sponge CD@AF(link sends e-mail)-CS synthesized was used as an adsorbent for the removal of atrazine. CD@AF(link sends e-mail)-CS was characterized using FT-IR and TGA analyses. Then the adsorption parameters such as solution pH and temperature were optimized. At pH 2, adsorption of atrazine is maximum and the adsorption is an exothermic process. The sorption follows the pseudo-first-order kinetics and the Freundlich isotherm model satisfactorily. The maximum adsorption capacity of CD@AF(link sends e-mail)-CS was found to be 32.06 mg/g at 10 °C and the saturation equilibrium was attained within 30 min. Further, the adsorbent can be regenerated and reused for the next cycle with comparatively good efficiency thereby reducing the waste generation.
Cite this Research Publication : D. Nagarajan, Varada, O. Mana, and Dr. Swarnalatha V, “Carbon dots coated on amine functionalized cellulose sponge for the adsorption of the toxic herbicide atrazine”, Materials Today: Proceedings. 2020.