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" Novel carbon spheres for the treatment of refinery effluents "
Addisu Tadesse Derebe
Wang, Kean
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Latin Dissertation
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| Language of Document
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English
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| Record Number
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803241
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| Doc. No
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TL48021
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| Call number
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1636535864; 1568710
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| Main Entry
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Schoettmer, Patrick L.
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| Title & Author
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Novel carbon spheres for the treatment of refinery effluents\ Addisu Tadesse DerebeWang, Kean
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| College
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The Petroleum Institute (United Arab Emirates)
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| Date
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2014
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| Degree
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M.S.
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| field of study
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Chemical Engineering
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| student score
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2014
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| Page No
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106
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| Note
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Committee members: Mittal, Vikas; Raj, Abhijeet
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| Note
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Place of publication: United States, Ann Arbor; ISBN=978-1-321-32453-2
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| Abstract
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The aim of this thesis is to develop an efficient and low cost adsorbent for refinery wastewater treatment. An environmentally-friendly hydrothermal procedure was employed to synthesize carbon spheres (CS) from glucose solution at 170°C. To study the effect of reaction time, four CS samples were synthesized at 12h, 14h, 16h and 19h. A portion of the samples were surface activated by treatment with 0.5M NaOH, the other portion treated with 0.5M CH<sub>3</sub>COOH, and the remaining samples were left untreated (native). All samples were characterized using various methods including SEM, XRD, Raman spectroscopy, N<sub>2</sub> adsorption and FT-IR. Adsorption experiments of Ag<sup>+</sup> and Cu<sup>2+</sup> were carried out in batch mode at room temperature. It was found that increasing reaction time resulted in CS with a lower amorphous content and lowered adsorption capacity, NaOH-treated CS had the highest adsorption capacity of 454 mg Ag<sup>+</sup>/g and 172 mg Cu<sup>2+</sup>/g, while CH<sub>3</sub>COOH-treated CS had a lower Ag<sup>+</sup> and Cu<sup>2+</sup> uptake than untreated CS. The adsorption isotherms were well fit by the Langmuir isotherm equation (for base-treated CS) and the Freundlich isotherm equation (for acid-treated CS). The CS showed a high potential for the removal of heavy-metals from refinery wastewater.
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| Subject
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Chemical engineering
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| Descriptor
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Applied sciences;Petroleum;Refining
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| Added Entry
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Wang, Kean
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| Added Entry
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Chemical EngineeringThe Petroleum Institute (United Arab Emirates)
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