Enhanced adsorption of ceftriaxone antibiotics from water by activated carbon derived from agriculture products waste

Abstract

The present work determines efficiency of domestic food waste like tea waste in removing pharmaceutical waste such as ceftriaxone (CEF) from synthetic wastewater. Carbonaceous material; Tea waste activated carbon (TAC) has been employed and it showed high removal capacity of 787.5 mg/g. TAC was characterized using; XPS, XRD, SEM, FT‐IR, and BET as well as it approved that the adsorbent a has high surface area of .6 m2/g. Various experimental parameters are evaluated for the removal efficiency of the synthesized adsorbent under the present study. During the adsorption study through batch experiments, it approved that the adsorption isotherm was fitted to Langmuir, while kinetically fitted to pseudo‐second‐order; the adsorption process was chemisorption process as the adsorption energy was 23.7 kJ mol−1. From evaluation thermodynamic parameters the adsorption reaction was endothermic and spontaneous reaction. The different real samples spiked with CEF and studies the efficiency of TAC to remove it. On the other hand, investigated the regeneration efficiency of the TAC and exhibit high regeneration efficiency as it will be used after four cycles with good efficiency of about 84.2%.

A Simple One‐Pot Pyrolyzed Synthesis of Ternary Magnetic ZnFe2O4/α‐Fe2O3/Biochar Nanocomposites for Adsorptive Removal of Direct Red 79 in Aqueous Solution

“…[7,8] Typically, activated carbon is efficiently employed as an adsorbent due to its porous structure, large surface area, and rich chemical surface properties. [9,10] For example, Shang et al [11] prepared activated carbon with a high specific surface area (1642 m 2 g À 1 ) by impregnating solid mixing peanut shells with molten ZnCl 2 with a mass ratio of 1 : 5 through a one-step activation method for methylene blue adsorption capacity as high as 876 mg g À 1 . Diaz et al [12] prepared porous carbon materials with rich pore structures and a specific surface area (321-417 m 2 g À 1 ) from grape seed using FeCl 3 as an activator with an adsorption capacity of Sulfamethoxazole of 147.4 mg g À 1 .…”