Jose Garcia, Texas A&M University – Kingsville

Studying the Wastewater Treatment Technique-Adsorption with Granular Activated Carbons (GAC) at Different Influent Concentration through Aspen Chromatography

Abstract: Many chemical and petrochemical industries discharges heavy amounts of wastewater into the environment without thinking of the danger it contains. Common compounds found in wastewater are organic pollutants such as benzene, toluene, ethylbenzene and xylene or BTEX for short, are very toxic to the well-being of humans as well as the environment. Certain procedures are required to minimize the contaminant levels of the volatile organic compounds to ensure the safety of the community when the wastewater is discharged.

The following work investigates a simulation of a common wastewater treatment technique known as adsorption to separate and purify the organic compounds from water in which the well-being of the community can be certain. Adsorption isotherm such as the Fruendlich equation as well as the initial BTEX concentration in isothermal condition for the adsorption process were studied by using a computer modeling software such as Aspen Chromatography. Once the simulation is complete, further examination of the data from Aspen was then imported to Microsoft Excel to focus on the concept of breakthrough curves as well as the clean-up objective for each component. Another aspect which is studied is how the amount of granular activated carbon (GAC) in Aspen affect the amount of time in which the breakthrough curves goes above the maximum contaminant level. With the following information, the data can help identify when the activated carbon is spent when subjective to a multicomponent mixture and different clean-up objectives with each different process. Also, in rotation of the lead and lag bed, when is the expected bed exhausted time in order to replace one bed and refill its activated carbon with fresh ones.

Presentation Author(s):
Jose Garcia*

 

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