Abstract
ABSTRACTThe present study was carried out to examine modified bagasse and rice straw as absorbents for the removal of emulsified oil by a microwave-assisted technique. The raw adsorbents were chemically modified with sodium hydroxide and surfactant solution for better adsorption of oil. The surface modification was confirmed through Fourier transform infrared (FTIR) spectroscopy and scanning electron microscope (SEM) analysis. Batch studies were performed to identify the influence of contact time, pH, dosage, speed, and temperature on the percentage of removal of emulsified oil from the wastewater. A maximum oil removal of 98.07% and 98.72% was achieved in microwave-assisted bagasse and rice straw at 313 K. The obtained data were compared with isotherm and kinetic models to understand the mechanism behind the adsorption. From the Langmuir isotherm model, a maximum adsorption capacity of 192.58 and 276.82 mg/g was observed for modified bagasse and rice straw. The oil-loaded raw and microwave-assisted adsorbents can act as a potential energy source for renewable energy.
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