Bioengineering of iron oxide nanoparticles using leaves extract of Dalbergia sissoo for the removal of diclofenac and tetracycline from water: optimization by BBD approach.
Himani Sabherwal, Ravi Kumar, Suresh Ghotekar, Chandra Mohan, Navish Kataria
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引用次数: 0
Abstract
Pharmaceutical compounds like tetracycline and diclofenac are causing significant environmental pollution, posing health risks and necessitating effective techniques for their elimination from water-based ecosystems. This study explores the potential of green-synthesized iron oxide nanoparticles (Fe2O3) in the adsorption of tetracycline (TC) and diclofenac (DF) and optimized the process using the Box-Behnken Design (BBD) approach. The average particle size of the synthesized Fe2O3 was found 15.71 nm. The BET results revealed that surface area, pore volume, and average pore diameter was 13.16 m2/g, 3.18 cm3/g, and 21.48 nm, respectively. At optimal conditions, TC and DF removal were 88.2-90.51%, respectively. with desirability function one. The Langmuir maximum adsorption capacity was 56.68 mg/g for TC and 62.36 mg/g for DF. The primary rate-limiting step is proposed to be chemisorption. The thermodynamics results confirm adsorption onto Fe2O3 that occurs spontaneously, endothermically, and randomly. The green Fe2O3 nanoparticles efficiently absorbed TC and DF from aqueous solutions upto five cycles, with efficiency declined from 87.9 to 67.23% and 90.01 to 65.23%, respectively, which showed economic applicability of materials. This study illustrates the efficacy of green-synthesized Fe₂O₃ nanoparticles in eliminating pharmaceutical pollutants and their significance in promoting sustainable water treatment technologies in accordance with circular economy and SDG objectives.
期刊介绍：
Environmental Geochemistry and Health publishes original research papers and review papers across the broad field of environmental geochemistry. Environmental geochemistry and health establishes and explains links between the natural or disturbed chemical composition of the earth’s surface and the health of plants, animals and people.
Beneficial elements regulate or promote enzymatic and hormonal activity whereas other elements may be toxic. Bedrock geochemistry controls the composition of soil and hence that of water and vegetation. Environmental issues, such as pollution, arising from the extraction and use of mineral resources, are discussed. The effects of contaminants introduced into the earth’s geochemical systems are examined. Geochemical surveys of soil, water and plants show how major and trace elements are distributed geographically. Associated epidemiological studies reveal the possibility of causal links between the natural or disturbed geochemical environment and disease. Experimental research illuminates the nature or consequences of natural or disturbed geochemical processes.
The journal particularly welcomes novel research linking environmental geochemistry and health issues on such topics as: heavy metals (including mercury), persistent organic pollutants (POPs), and mixed chemicals emitted through human activities, such as uncontrolled recycling of electronic-waste; waste recycling; surface-atmospheric interaction processes (natural and anthropogenic emissions, vertical transport, deposition, and physical-chemical interaction) of gases and aerosols; phytoremediation/restoration of contaminated sites; food contamination and safety; environmental effects of medicines; effects and toxicity of mixed pollutants; speciation of heavy metals/metalloids; effects of mining; disturbed geochemistry from human behavior, natural or man-made hazards; particle and nanoparticle toxicology; risk and the vulnerability of populations, etc.
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