Effective Remediation of an Antibacterial Drug from Aqua Matrix Using CaFe 2 O 4 /ZrO 2 Nanocomposite Derived via Inorga
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RESEARCH ARTICLE-CHEMICAL ENGINEERING
Effective Remediation of an Antibacterial Drug from Aqua Matrix Using CaFe2 O4 /ZrO2 Nanocomposite Derived via Inorganic Chemical Pathway: Statistical Modelling by Response Surface Methodology Mahashweta Bhowmik1 · Animesh Debnath1 · Biswajit Saha2 Received: 24 December 2019 / Accepted: 5 March 2020 © King Fahd University of Petroleum & Minerals 2020
Abstract With the rapid development in nanotechnology, the preparation of novel self-assembled nanoscale composite materials and their numerous environmental applications have become a promising area of research among the environmental scientists. In view of above, the present study aims at fabrication of a mesoporous nanoscale material of calcium ferrite-zirconium oxidemagnetic nanocomposite (CF-ZrO-MNC) to explore its application in adsorption-driven remediation process of tetracycline (TC). The characterisation study of the so-prepared CF-ZrO-MNC has revealed the presence of 0.1213 cc/g of mesoporous volume with a specific surface area of 95.32 m2 /g. A comparative study performed between CF-ZrO-MNC, CaFe2 O4 and ZrO2 nanoparticles has proven the superior adsorption capability of CF-ZrO-MNC for TC over the pure phases of parent CaFe2 O4 and ZrO2 nanoparticles. The optimisation of TC adsorption process was performed by response surface methodology, which has revealed that 98.14% of TC removal can be obtained within 60 min of contact time using 4.0 g/L of CF-ZrO-MNC dose with 40.0 mg/L of TC concentration at solution pH 6.0. The kinetic and isotherm studies have presented pseudo-second-order kinetic and Freundlich isotherm model as the best-fitted models, respectively. The results of Langmuir isotherm model fitting indicated that CF-ZrO-MNC poses 92.59 mg/g of maximum TC adsorption capacity which has been proven to be highly effective as compared to previously reported adsorbents for the remediation of TC from aqueous media. Keywords Metal oxide nanocomposite · Tetracycline · Adsorption · Response surface methodology · Kinetic · Isotherm
1 Introduction Pharmaceuticals and personal care products being released to the natural aqua systems have emerged as a serious health concern in the last few decades. Among several pharmaceuticals, antibiotics are known for their uniqueness as they only act upon harmful disease-producing bacteria without posing any destructive effect on human and animal tissues. Tetracycline (TC), a widely used antibiotic, is mostly recognised for its low-cost production and higher antibacterial activity [1]. It is noteworthy that in spite of its high demand in veterinary and human therapy, TC compounds even at their permissible
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Animesh Debnath [email protected]
1
Department of Civil Engineering, National Institute of Technology Agartala, Jirania, West Tripura 799046, India
2
Department of Physics, National Institute of Technology Agartala, Jirania, West Tripura 799046, India
concentration may pose a significant threat to environmental health and need to be discarded from the ecosystem [2]. TC m
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