Removal behaviour of NSAIDs from wastewater using a P-functionalised microporous carbon

Enhanced Removal of Non-Steroidal Inflammatory Drugs from Water by Quaternary Chitosan-Based Magnetic Nanosorbents

“…There are several possible mechanisms for the adsorption of NSAIDs onto the Fe 3 O 4 @SiO 2 / TMC/GPTMS particles: (i) electrostatic interactions between the cationic trimethylammonium groups from TMC and the carboxylate groups of the NSAIDs molecules [57,58]; (ii) H-bonding interactions among the NSAIDs (carboxyl, amine, and ester groups) with the hydroxyl groups of trimethyl chitosan [58,59]; and (iii) hydrophobic interactions in which the hydrophobic dimethylated groups (−N(CH 3 ) 2 ) of trimethyl chitosan can capture the NSAID molecules [59][60][61]. Previous studies have explained the adsorption of NSAIDs on other sorbents based on hydrogen bonding [59,60]. Taking into account the results in Figure 4d, at pH = 9, the adsorption capacity of each NSAID towards Fe 3 O 4 @SiO 2 /TMC/GPTMS particles decreased in the order DCF > NAP > KET.…”

“…However, the particles still adsorbed NSAIDs, indicating that electrostatic interactions are not the only mechanisms that govern the adsorption at this pH. There are several possible mechanisms for the adsorption of NSAIDs onto the Fe3O4@SiO2/TMC/GPTMS particles: (i) electrostatic interactions between the cationic trimethylammonium groups from TMC and the carboxylate groups of the NSAIDs molecules [57,58]; (ii) H-bonding interactions among the NSAIDs (carboxyl, amine, and ester groups) with the hydroxyl groups of trimethyl chitosan [58,59]; and (iii) hydrophobic interactions in which the hydrophobic dimethylated groups (−N(CH3)2) of trimethyl chitosan can capture the NSAID molecules [59][60][61]. Previous studies have explained the adsorption of NSAIDs on other sorbents based on hydrogen bonding [59,60].…”

Recent advancement of biomass-derived porous carbon based materials for energy and environmental remediation applications

“…Even though amine functionalized carbon delivered the poorest adsorptive performance, it showed high selectivity for paroxetine (PAR) and venlafaxine (VEN). 278 Recently reported examples for the elimination of pharmaceuticals using carbon precursors include cotton textile waste, 279 carob waste, 280 pomegranate peel, 281 cherry kernels 282 and argan nutshells. 283…”

Fabrication of HKUST-1/ZnO/SA nanocomposite for Doxycycline and Naproxen adsorption from contaminated water

“…Naproxen is used to relieve mild to moderate pain caused by various conditions. It is also used to reduce pain, swelling, and stiffness in joints caused by osteoarthritis ( Pap et al, 2021 ). This group of drugs is found within the sewer and most aquatic environments and different soil levels( Czech et al, 2021 ).…”