Novel carbon spheres for the treatment of refinery effluents

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" Novel carbon spheres for the treatment of refinery effluents "

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	802845
Doc. No	:	TL48021
Call number	:	‭1636535864;‮ ‬1568710‬
Main Entry	:	Schoettmer, Patrick L.
Title & Author	:	Novel carbon spheres for the treatment of refinery effluents
	:	\ Addisu Tadesse Derebe
	:	Wang, Kean
College	:	The Petroleum Institute (United Arab Emirates)
Date	:	2014
Degree	:	M.S.
student score	:	2014
field of study	:	Chemical Engineering
Page No	:	106
Note	:	Committee members: Mittal, Vikas; Raj, Abhijeet
Note	:	Place of publication: United States, Ann Arbor; ISBN=978-1-321-32453-2
Abstract	:	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.
Subject	:	Chemical engineering
Descriptor	:	Applied sciences;Petroleum;Refining
Added Entry	:	Wang, Kean
Added Entry	:	The Petroleum Institute (United Arab Emirates)
	:	Chemical Engineering