Removal Of Tetracycline Hydrochloride Antibiotic From Water Using An Ozonation Alone And Combination Of Ozonation And Sonolysis
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Date
2021-07-01
Authors
Jayaprakas, Sharvin
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
Tetracyclines (TCs) are a class of diverse antibiotics that have a wide range of
applications in human, veterinary, and aquaculture treatment. TCs residues are
ubiquitous in soil, surface water, groundwater, and even drinking water due to the
ongoing release of TCs residues into the environment and insufficient removal through
conventional treatment systems. The establishment of TCs resistance in a wide range
of bacteria demonstrates the severity of the TCs pollution. The degradation of TC
antibiotic using ozonation alone and a combination of ozonation and sonolysis is
discussed in this publication. Concentration, pH, and catalyst weight are three criteria
that have been studied to determine the optimal antibiotic degradation efficiency. The
ozone output supply was constant throughout the experiment. For an initial
concentration of antibiotic, the results obtained shown that gnvhh can degrade TC
antibiotic faster at a very low concentration, 30 ppm and the degradation efficiency
was 85.96% within 5 minutes of the reaction. The results shown that for higher
concentration, the reaction time needed increases. At an initial pH of 9, the degradation
of antibiotic showed higher percentage of degradation efficiency. More than 79% of
antibiotic was degraded after 5 minutes of the reaction. For highest weight of catalyst,
which is 0.25 g, the degradation efficiency of TC antibiotic achieved 84.75 % also
within 5 minutes of reaction. Kinetic analysis showed that the ozonation of the TC
antibiotic represented the first order reaction. The results reaction of ozone together
with sonolysis was more effective compared to ozone alone. The degradation
efficiency of TC antibiotic at concentration of 60 ppm at 5 minutes of reaction was
92.1% with sonolysis and 89.8% for ozone alone. The synergy observed in the
combined schemes, mainly due to the effects of ultrasound in enhancing the O3
decomposition, led to a higher mineralization for 2 hours treatment and to a
significantly higher mineralization level for shorter treatment duration. The results
obtained before and after sonolysis and ozonation applied jointly found to be a
promising technology for TC degradation in wastewater solution. This is attributed to
the enhanced O3 are degradation by collapsing bubbles that may yield additional free
radicals. The study's findings were examined, and some future research in antibiotic
degradation was suggested for more effective approaches.