Carbon-based ionic liquid gels: alternative adsorbents for pharmaceutically active compounds in wastewater

2021 ◽  
Author(s):  
Carla Rizzo ◽  
Salvatore Marullo ◽  
Francesca D'Anna
Keyword(s):  
Ionic Liquid ◽  
Pharmaceutically Active Compounds ◽  
Active Compounds ◽  
Carbon Based ◽  
Alternative Adsorbents

Hybrid ionic liquid gels, efficient adsorbents for cleaning wastewater from pharmaceutically active compounds.

scholarly journals Carbon Nanomaterial Doped Ionic Liquid Gels for the Removal of Pharmaceutically Active Compounds from Water

Molecules ◽  
2019 ◽  
Vol 24 (15) ◽  
pp. 2788
Author(s):  
Carla Rizzo ◽  
Salvatore Marullo ◽  
Nadka Tz. Dintcheva ◽  
Francesca D’Anna
Keyword(s):  
Ionic Liquid ◽  
Nalidixic Acid ◽  
Carbon Nanomaterials ◽  
Pharmaceutically Active Compounds ◽  
Water Contaminants ◽  
Active Compounds ◽  
Colloidal Forces ◽  
Antibiotic Drugs ◽  
Purification Methods ◽  
Dialysis Membranes

Due to large drug consumption, pharmaceutically active compounds (PhACs) can be found as water contaminants. The removal of PhACs is a significant issue, as they can easily overtake traditional purification methods. Because of their surface properties, carbon nanomaterials are among the most efficient materials able to adsorb PhACs. However, their limitation is their recovery after use and their possible leakage into the aquatic system. Consequently, new hybrid supramolecular ionic liquid gels (HILGs) have been designed for the adsorption of some antibiotic drugs (ciprofloxacin and nalidixic acid) from water. The chemical–physical properties of gels, such as the temperature of the gel–sol transition, morphology, and rheology, have been studied for their use as sorbents. These properties influence the gel removal efficiency of PhAC, i.e., the best system is the gel that presents weaker colloidal forces. A fast removal (RE = 51%) is obtained in 3 h for ciprofloxacin, while a slower adsorption process is observed for nalidixic acid (RE = 88% in 24 h). HILGs can be recycled up to seven cycles and regenerated. In addition, they can be used with higher concentrations or volumes of PhAC and in a realistic apparatus like dialysis membranes. These peculiarities suggest that HILGs can be competitive with more complex sorbent systems.

scholarly journals Palladium nanoparticles on a pyridinium supported ionic liquid phase: a recyclable and low-leaching palladium catalyst for aminocarbonylation reactions

RSC Advances ◽  
2020 ◽  
Vol 10 (40) ◽  
pp. 23988-23998
Author(s):  
Bernadett Adamcsik ◽  
Enikő Nagy ◽  
Béla Urbán ◽  
Péter Szabó ◽  
Péter Pekker ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Phase ◽  
Palladium Catalyst ◽  
Palladium Nanoparticles ◽  
Pharmaceutically Active Compounds ◽  
Reaction Conditions ◽  
Active Compounds ◽  
Supported Ionic Liquid ◽  
Pyridinium Ions

SILP catalyst with grafted pyridinium ions was used for either mono- or double carbonylation depending on the reaction conditions. Good recyclability and low palladium loss were observed during the synthesis of pharmaceutically active compounds.

Pharmaceutically Active Compounds Degradation Using Doped TiO2 Functionalized Zeolite Photocatalyst

2018 ◽  
Vol 69 (1) ◽  
pp. 34-37 ◽  
Author(s):  
Monica Ihos ◽  
Corneliu Bogatu ◽  
Carmen Lazau ◽  
Florica Manea ◽  
Rodica Pode
Keyword(s):  
Organic Carbon ◽  
Active Compound ◽  
Uv Spectra ◽  
Pharmaceutically Active Compounds ◽  
Mineralization Process ◽  
Active Compounds ◽  
Spectra Analysis ◽  
Doped Tio2 ◽  
Toc Removal ◽  
Pharmaceutically Active Compound

The aim of this study was the investigation of photocatalytic degradation of pharmaceutically active compounds using doped TiO2 functionalized zeolite photocatalyst. Diclofenac (DCF), a non-steroidal anti-inflammatory drug, that represents a biorefractory micropollutant, was chosen as model of pharmaceutically active compound. The photocatalyst was Z-TiO2-Ag. The concentration of DCF in the working solutions was 10 mg/L,50 mg/L,100 mg/L and 200 mg/L and of photocatalyst 1 g/L in any experiments. The process was monitored by recording the UV spectra of the treated solutions and total organic carbon (TOC) determination. The UV spectra analysis and TOC removal proved that along the advanced degradation of DCF also a mineralization process occurred. The carried out research provided useful information envisaging the treatment of pharmaceutical effluents by photocatalysis.

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