Removal of Dissolved Organic Carbon from Oily Produced Water by Adsorption onto Date Seeds: Equilibrium, Kinetic, and Thermodynamic Studies

摘要: The feasibility of date seeds as a new low-cost natural adsorbent for the removal dissolved organic carbon (DOC) from oily produced water was investigated. aim this study to elucidate mechanism associated with DOC and find best equilibrium isotherms kinetic models in batch adsorption experiments. effect various physicochemical parameters such initial concentration (18.5–93.5 mg/L), solution pH (4–9), temperature (25–45 °C), dosages (0.5–2.0 g) evaluated. stage attained after contact time 120 min. maximum 82 % 93.5 mg/L concentration. data were well represented by Langmuir isotherm. monolayer capacity found be 74.62 mg/g. separation factor, R L, equation Freundlich constant, n, indicated favorable adsorption. studies that process follows pseudo-second-order kinetics. is governed both surface pore diffusion. results revealed uptake decreases when increases. has been exothermic nature, thermodynamic determined. isotherm model adopted design single-stage absorber onto seeds. demonstrated can considered promising water.