Abstract
This study interprets phosphated biomass of Ailanthus excelsa (PBAE) as a eco-friendly, inexpensive and potential adsorbent for adsorption of ortho-nitrophenol (ONP) from aqueous solution by using batch adsorption method. The prepared biosorbent was characterized using a variety of techniques such as Brunauer Emmett Teller (BET), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscope (SEM). As a function of many process parameters including material dose, contact time, concentration, pH and temperature, batch studies were conducted. It was found that a pH of 6.0, a biosorbent dosage of 0.050 g and an initial phenol concentration of 25 mg/L and temperature 298 K were the best conditions for ONP removal. The maximum sorption was found to be 95.28%. Adsorption data was better fitted to the Langmuir, Freundlich, Temkin and Dubinin Radushkevich isotherms. It was demonstrated that the sorption rate follows the pseudo-second order kinetics and intraparticle diffusion theory and the biosorption process was spontaneous and exothermic in nature.
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