Study on Activated
Carbon derived from Cassava Peels as Magnetic Solid of Dispersive Solid Phase Extraction
Technique for Determination of Tetracycline
Rinawati R., Kiswandono A.K., Widiarto S., Kasih Y.O. and Hadi S.
Res. J. Chem. Environ; Vol. 27(3); 1-8;
doi: https://doi.org/10.25303/2703rjce01008; (2023)
Abstract
Concern on the existence of antibiotic residues in aqueous environment has been
growing in recent years since they are known to impart various severe effects on
human health and environment. In general, the concentration of antibiotic residue
in environment is in trace level and often below the limit of detection of analytical
instruments, implying that sample preparation prior to analysis requires particular
strategy. In the present work, activated carbon produced from cassava peel was converted
into magnetite activated carbon followed by utilization of magnetite activated carbon
produced as adsorbent for tetracycline antibiotic, in order to evaluate its potential
as the material for dispersive solid‐phase extraction (DSPE).Characteristics of
the adsorbent were investigated using several techniques including Scanning electron
microscopy (SEM) and X‐ray diffraction. Several parameters influencing the adsorption
by DSPE were optimized. The tetracycline adsorbed by magnetic activated carbon was
analyzed using a UV-Vis spectrophotometer at a wavelength of 275 nm.
Characterizations revealed that the adsorbent has irregular surface, rough and highly
porous structure with magnetic properties. Adsorption experiments indicate that
equilibrium reached at pH 6, time 10 minute and adsorbate concentration 1 mg/L.
By application of 20 mg adsorbent, the highest percentage of adsorption of 73 was
achieved. The study indicates that magnetic activated carbon from cassava peel has
promising potential as a low-cost and effective adsorbent for determination of tetracycline
residues in aquatic environment.
