Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/1847
Title: Treatment of wastewater containing nonsteroidal anti-inflammatory drugs using activated carbon material
Authors: Pirvu, Florinela 
Covaliu, Cristina Ileana 
Paun, Iuliana 
Paraschiv, Gigel 
Iancu, Vasile 
Affiliations: National Research and Development Institute for Industrial Ecology, ECOIND 
University Politehnica of Bucharest, Romania 
National Research and Development Institute for Industrial Ecology, ECOIND 
University Politehnica of Bucharest, Romania 
National Research and Development Institute for Industrial Ecology, ECOIND 
Keywords: Wastewater treatment;Activated carbon;Anti-inflammatory drugs;Ibuprofen;Acetaminophen;Diclofenac;Ketoprofen
Issue Date: 12-Jan-2022
Publisher: MDPI
Abstract: 
This study presents an adsorbent material (activated carbon) used in the treatment of wastewater with the role of removing ibuprofen, acetaminophen, diclofenac, and ketoprofen pollutants. The wastewater treatment efficiencies of the activated carbon were systematically investigated using adsorption kinetics. The parameters studied were: pH (4 and 6 values of pH), initial concentration of wastewater (1, 5, and 10 mg/L), contact time (10 min), adsorbent quantity (0.1, 0.5, and 1 g), and isotherm models (Langmuir and Freundlich). The highest wastewater treatment efficiency was obtained at the 6 pH value. The determination of four anti-inflammatory drugs, frequently monitored in wastewater, was performed by a simple and fast method using the HPLC-technique-type DAD (diode array detector). The method was linear when the concentration ranged between 0.5 and 20 m/L for all compounds. The equilibrium concentration was obtained after 8 min. The octanol/water
coefficient influenced the removal efficiency of the four drugs by the adsorbent material (activated carbon). The dose of activated carbon (0.1 to 1 g) significantly influenced the efficiency of wastewater treatment, which increased considerably when the dose of the adsorbent material increased. Using 1 g of the adsorbent material for the treatment of wastewater containing 1 mg/L initial concentration of pollutant compounds, the efficiencies were 98% for acetaminophen, 92% for diclofenac, 88% for ketoprofen, and 96% for ibuprofen.
Description: 
Materials, 2022, vol.15, no. 1, 559, https://doi.org/10.3390/ma15020559.
URI: http://hdl.handle.net/123456789/1847
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