Removal of amoxicillin from contaminated water using NH 4 Cl-activated carbon: Continuous flow fixed-bed adsorption and catalytic ozonation regeneration

Pre-concentration of nalidixic acid through adsorption–desorption cycles: Adsorbent selection and modeling

“…describe adsorption kinetics and the maximum adsorption capacity [32,38,51]. In the present study, these three models have been studied to find out the best model describing the adsorption in column.…”

“…It presents several advantages: simple design and operation, low initial cost, and high potential for the removal of emerging pollutants due to the vast variety of adsorbents [27][28][29]. Activated carbons are effective to remove antibiotics from water, significant adsorption capacities being reported in the literature [30][31][32]. But for adsorption process, the possibility of regeneration, allowing the use of the adsorbent in subsequent adsorption-desorption cycles, is as important as the adsorption capacity [33].…”

“…Likewise, regeneration behaviour of the adsorbent should be optimized for subsequent uses of the adsorbent and for obtaining regenerating solutions concentrated enough. There are different methods for the regeneration such as extraction with different solvents, chemical regeneration or thermal treatments [32,39,40]. There are few studies focused on continuous adsorption/desorption of pharmaceutical products with regeneration of the adsorbent.…”

“…There are few studies focused on continuous adsorption/desorption of pharmaceutical products with regeneration of the adsorbent. Yaghmaeian et al [32], studied the removal of amoxicillin using activated carbon and the desorption was carried out by using ozonation. Otero et al, [41] studied the fixed bed adsorption and desorption of salicylic acid employing water at the same temperature than adsorption for the elution process while Tian et al, [5] realized the desorption of two sulphonamide antibiotics using a NaCl and NaOH solution to regenerate the column.…”

Investigating the potential of carbon activated with NH4Cl for catalyzing the degradation and mineralization of antibiotics in ozonation process

“…Because antibiotics are resistant to microbial metabolism, they cannot be efficiently degraded using biological treatment processes. Techniques such as adsorption (Putra et al, 2009;Moussavi et al, 2013;Yaghmaeian et al, 2014), advanced oxidation including Fenton-based and photocatalysis processes (Elmolla and Chaudhuri, 2010;Benitez et al, 2011), O 3 /UV, O 3 /TiO 2 and O 3 /H 2 O 2 (Benitez et al, 2011), UV/H 2 O 2 (Benitez et al, 2011;Jung et al, 2012) and non-thermal plasma (Magureanu et al, 2011) have been studied for removal of amoxicillin from the contaminated water. Advanced oxidation processes (AOPs) are the methods of choice for treatment of emerging water contaminants because they efficiently destroy organic compounds using reactive radical species (Moussavi et al, 2010).…”