Polymeric adsorbents for oil removal from water
| Author | Albatrni H. |
| Author | Qiblawey H. |
| Author | Almomani F. |
| Author | Adham S. |
| Author | Khraisheh M. |
| Available date | 2020-04-09T07:35:02Z |
| Publication Date | 2019 |
| Publication Name | Chemosphere |
| Resource | Scopus |
| ISSN | 456535 |
| Abstract | In this study, the application of four synthetic resins for the removal of emulsified oil from produced water was investigated. Key experimental parameters such as adsorbent dosage, contact time, initial oil concentration and pH were evaluated for Optipore L493, Amberlite IRA 958, Amberlite XAD 7 and Lewatit AF 5. Oil removal rates upwards of 98% were achieved using AF 5, XAD 7 and L493. IRA 958 recorded very modest removal rates of less than 25%. Isotherm data were further investigated and fitted using Langmuir, Freundlich, Toth, Flory Huggins and Dubinin-Radushkevich models. The results show that the adsorption onto XAD 7 and L 493 is a multilayer adsorption process over a heterogeneous surface that is best illustrated by the Freundlich and Toth models respectively. The Dubinin-Radushkevich best described the removal using AF 5 resin that assumes that the adsorption process occurs on a heterogenous surface with a gaussian energy distribution. Kinetic studies assessing the rate of removal for each resin were conducted. Experimental results were best fitted using pseudo second order kinetics. It is concluded that XAD 7 had the highest kinetics among all tested resins. Also, AF 5 exhibited the highest adsorption capacity. Overall, the study confirmed the applicability of the resins for the removal of oil from produced water. - 2019 Elsevier Ltd |
| Sponsor | The authors would like to acknowledge ConocoPhillips Qatar for sponsoring the graduate students who performed this research project ( HA ). Also, we would like to extend our appreciation to the Central Laboratory unit (CLU) and the Gas Processing Center (GPC) at Qatar University for their support and allowing us to use their facilities throughout this research project. It should be noted that this evaluation is a contribution to science and does not constitute an endorsement of any particular vendor's resins nor do we intend to disqualify any of the products tested in the project. |
| Language | en |
| Publisher | Elsevier Ltd |
| Subject | Adsorption Adsorption isotherms Oil water emulsions Polymeric adsorbents Produced water |
| Type | Article |
| Pagination | 809-817 |
| Volume Number | 233 |
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Chemical Engineering [1175 items ]