Degradation of ammonaical nitrogen (NH3-N) in leachate by zinc oxide loaded activated carbon: Process parameters modelling and optimization through RSM design
Singh K. Lohchab R.K. Kumar V. Kumar A.
December 2023Elsevier Ltd
Bioresource Technology Reports
2023#24
In this study, NH3-N will be removed from a leachate sample using a zinc oxide (ZnO) nanocomposite that is combined with corncob-activated carbon. A simple impregnation and pyrolysis procedure was used to create the nanocomposite, and BET, XRD, and FTIR studies were used to validate its creation. Under optimized conditions pH 7, temperature 30°C, adsorbent dose 1.50 g/50 L, and a contact time of 160 min, resulting the highest NH3-N removal efficiency of 73.5 %. The experimental data were successfully fitted to various isotherms (Hill, Koble–Corrigan, Redlich–Peterson, Khan and Toth) and Pseudo-second-order kinetics were found suitable for NH3-N reduction. Furthermore, the lower value of RMSE (0.47) obtained through RSM-CCD indicated a minimal difference between the experimental (73.5 %) and model-based (71.2 %) removal percentages of NH3-N, confirming the models suitability for adsorption method. The promising results of the adsorption study provide valuable insights and indicating the potential of nanocomposite material for sustainable leachate treatment.
Adsorption , Ammonia Nitrogen removal , Corncob , Leachate , ZnO nanoparticle
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Department of Civil Engineering, MM Engineering College, Maharishi Markandeshwar (Deemed to be University), Mullana, Haryana, Ambala, 133207, India
Department of Environmental Science & Engineering, Guru Jambheshwar University of Science and Technology, Haryana, Hisar, 125001, India
Department of Biotechnology, Maharishi Markandeshwar (Deemed to Be University), Mullana, Haryana, Ambala, 133207, India
Department of Microbiology, International Medical School, UIB, Almaty, Kazakhstan
University Center for Research & Development (UCRD), Biotechnology Engineering & Food Technology, Chandigarh University, Gharuan, Punjab, Mohali, 140413, India
Department of Civil Engineering
Department of Environmental Science & Engineering
Department of Biotechnology
Department of Microbiology
University Center for Research & Development (UCRD)
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