Optimization, Kinetics, and Equilibrium Studies on the Removal of Beta-Lactam Antibiotics from Industrial Waste Water Using Functionalized Magnetic Multi-Walled Carbon Nanotube as a Novel Adsorbent

In the recent years, residual antibiotics are considered to be nascent environmental pollutantsdue to their continuous input and persistence into the aquatic ecosystem even at low concentrations.Therefore, these are necessary to develop efficient methods for the waste watertreatment [1-3]. The presence studied describes the efficiency of magnetic multi-walled carbonnanotubes (MMWCNT) for the adsorption of the selected beta-lactam antibiotics (penicillinG procaine, Amoxicillin trihydrate) from wastewater samples. The functionalizedMMWCNT were characterized by Fourier transform infrared spectroscopy (FT-IR), scanningelectron microscopy (SEM). The obtained antibiotic percentage of sorption was evaluated byquantitative assessment using high-performance liquid chromatography(HPLC) coupled withthe Ultraviolet Detector. In order to optimize the operating conditions, the effects of pH, Timecontact, Agitation speed, adsorbent dosage, and antibiotics initial concentration were investigatedby taquchi experimental design method [1]. The data were fitted tothe Pseudo firstorderkinetic, Pseudo second-order kinetic, Langmuir, Freundlich and Dubinin-Radushkevich(D-R) equation to estabilish the sorption kinetics and isotherms of antibiotics removal byMMWCNT [4]. The best percentages of removal were obtained for penicillin 90%, andamoxicillin 86.5%.