Combined adsorption/regeneration process for the removal of trace emulsified hydrocarbon contaminants.
作者： Zohreh Fallah , Edward P.L. Roberts
DOI: 10.1016/J.CHEMOSPHERE.2019.04.224
关键词: Electrochemical regeneration 、 Diffusion 、 Graphite intercalation compound 、 Hydrocarbon 、 Kinetics 、 Chemical engineering 、 Chemistry 、 Emulsion 、 Adsorption 、 Produced water
摘要: In this study a process of adsorption and electrochemical regeneration was evaluated for its efficiency in removing low concentrations emulsified oil from produced water, which is generated as by-product the thermal in-situ production heavy oil. Adsorption behavior investigated using synthetic model emulsions samples water; theoretical models were applied to equilibrium kinetics. It demonstrated that rate controlled by external mass transport, with no contribution intra-particle diffusion. The non-porous structure Graphite Intercalation Compound (GIC) adsorbent led effective fast less than 30 min. Based on cryo-SEM imaging EDX phase mapping, underlying mechanism envisioned frame adhesion spreading droplets surface predominately hydrophobic GIC surface. adsorptive capacity 100% recoverable regeneration. Energy consumption found be 22 kWh per kg COD removed treatment emulsion 36 kWh water.
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