| Title | Treatment of oil-water emulsions by adsorption onto resin and activated carbon |
|---|---|
| ID_Doc | 14723 |
| Authors | Tejero, MDA; Jové, E; Carmona, P; Gomez, V; García-Molina, V; Villa, J; Das, S |
| Title | Treatment of oil-water emulsions by adsorption onto resin and activated carbon |
| Year | 2017 |
| Published | |
| Abstract | Water is essential in most of the industrial processes in order to guarantee proper production. Minimizing waste is one of the principles behind any circular economy initiative. Typically, industrial waste water contains oil and grease, BTEX (benzene, toluene, ethyl benzene and xylenes), high content in dissolved solids, suspended solids, heavy metals, biological oxygen demand (BOD) and chemical oxygen demand (COD). In order to be discharged or reused, waste water needs to be treated to meet the existing regulations. Emulsified oil in waste water constitutes a severe problem in the different treatment stages before being disposed of in a manner that does not violate environmental criteria. Several technologies are already in place to treat refinery wastewater. One commonly used technique for remediation of petroleum contaminated water is adsorption. The main objective of this study is to examine the removal of oil from oil-water emulsions by adsorption on a Dow resin and activated carbon. Experiments were performed at the Dow Water and Process Solutions (DW & PS) Global Water Technology Center (GWTC) in Tarragona, (Spain) in order to evaluate the removal of hydrocarbons from real oily water samples from a petrochemical company in Spain using DOWEX (TM) OPTIPORE (TM) L493 Polymeric Adsorbents and commercial granulated activated carbon. The results showed that the adsorbents were able to remove oil from water and that the adsorptive properties of the adsorbents are influenced by different factors such as contact time, flow rate, etc. Test data showed that OPTIPORE L493 could remove up to 99.7% of the oil-in-water contents consistently at flow rates where activated carbon efficiency had started to decline. The present paper includes the details of the results of this study. |
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