Ability of Certain Clays in Decolarization of Lubricant Oil


  • Abdulsalam R. Karim College of Medicine, University of Sulaimani, Kurdistan Region, Iraq. Author
  • Karim J. Jubrail College of Medicine, University of Sulaimani, Kurdistan Region, Iraq. Author
  • Mohhamad A. Abdullah College of Medicine, University of Sulaimani, Kurdistan Region, Iraq. Author




Bentonite, Kaolin, Bleaching, Mineral oil, Adsorption


Various types of clays (namely, yellow bentonite, brown bentonite, and Kaolin) of Iraqi Kurdistan have been used for decolorizing dark oils and compared with activated China clay and Iranian clay called (Rose); which are largely used for the industriai processing of mineral oils. Chemical analysis has been made for all clay saniples for determination of their chemical compositions then different amounts (percentage) ofeach clay (3-11%iviv) have been used lor the decolorizing process ofthe lubricant oil, that manufactured at Sulaimani city at tixed temperature and particle size. Later, studies of different temperatures (150,200.250,300"C) at fixed amount of clay have been carried out to show the temperature effect on adsorption process. The decolorizing efficiency' of clays was found to be in the following order; China clay, Iranian clay. Kaolin. yellow clay , brown clay. Also the effecl of acid has been studied to activate and improve the adsorption process in the decolorization ol dark lubricant oil. The adsorption isotherms data obtained rvere found to follow the Freundiich adsorption isotherm model.


William A. Gruse, Donald R. Stevens "Chemical technology of petroleum" 3rd. Mc Graw hill book, 1960, Chapter Vlll« 310.

Hamid Jazayeri and mehra.m Rezaei "studies on acid activation of bentonite clays" Chis a 2002 conferance

Francisco R. Vanzuela and persio de souza santos n studies on the acid activation of brazilian semctitic clays" Quim - Nova,u 24(3) 345 2 53

Haydn Murray "industrial clays case studf' Areport commissional by the MMSD project of international institute for environment and development IIED, march

codc of practice oil refining March 2002 Murray, zippl Clay sci 53379-395,199L

SHE-CHEN-HOIJ, CHUN-I LIN fi efTèct of orocessing conditions on regeneration of bleaching clay" Journal of chemical engineering ofJapan 2000„ 339( 2) 239 244 DOI: https://doi.org/10.1252/jcej.33.239

Abdulhamid Boukerroui and Mohand-Saíd Ouali etRegeneration of a spent bleaching earth and its reuse in the refining of an edible oil " Journal of chemical technology and biotechnologv, . 2000. 75 ( 9) 773 776 Aug DOI: https://doi.org/10.1002/1097-4660(200009)75:9<773::AID-JCTB287>3.0.CO;2-L

Sun Kwan son and Jai kenn Yang "activated clay manufacturing studies(l) studies on manufacturing method of activated clay" Lof the Korean chemical socieÍy 1970,

(h Sun Kwan son and Myong won ke t'ac{ivated clay manufacturing studies(ll)studies on the estimation of acid clay structure J.oflhe Korean chemical society , 1970,

Mu erref ONAL,Yuksel Sarikaya;rulay alemda roaln and lhsan bozdogan "The effect af acid activation on some physicochemical properties of a bentonine' i lurk J.chem. 2002

N.Yildiz and A.—alimli (Alteration of three Turkish bentonites by treatment with Na2C03 and H2S04) 2001326,.393-401.

Tulay AlemdaroelthGulcan akkus, ONAL,Yuksel Sarikaya"investigation of the surface acidity of bnetnnite modified by acid activation and thermal treatment". Turk Jchem. 2003 .27,.675-68ì.

Husevin Topallar "The adsorption isotherms of the bleaching of sunflowey•eecl oil" chemistry1998 .22 $ 143-148.

M.rezaei, S.Hr "production of hleaching earth for decolorizing of edible oils" from internct site : me rezaei@hotmaîl.eom June 2004.

Komarov V.S„Repina NS„Zonov Yu,G "Alkaline activation of the montmorillonite clays"proc of the Natl. academv of science of Belarus,Ser.cheynical Sci , 2003(4) 8689.

British standard, EN ISO 9001, July 1994.

Arthur I. Vogel "quantitative inorganic anaiysisn 3 rd edition ch. V 111972.

Ahmed Moustafa "Prodution of top qualilv soyben oil Cincinnati, Ohio.



How to Cite

Ability of Certain Clays in Decolarization of Lubricant Oil. (2005). Journal of Zankoy Sulaimani - Part A, 8(1), 127-140. https://doi.org/10.17656/jzs.10141