000			01651nab a2200193 4500
005			20260520002032.0
008			260224s2011 xxu
245	0	0	_aDemulsifier systems applied to breakdown petroleum sludge
260			_a _b _cagos. 2011
270			_a04/04/2012 ; 04/04/2012
300			_a7 p. ; 364 - 370
520			_aTranscripción del resumen del autor. Three sets of demulsifier systems based on nonyl phenol ethoxylates (n = 9, 11, 13) were prepared. These demulsifiers have been employed to breakdown petroleum sludge obtained from the main drainage basin of Al-Hamra Oil Company. These systems were composed of 4% inorganic acid solution, 10% of aqueous phase solution composed of NP-9, NP-11 and NP-13 as surfactants and isopropyl or butyl alcohol as co-surfactants and the balance of the system is an oil phase (benzene/toluene, 1:1mixture). The breakdown of petroleum sludges was evaluated by TPH analysis, determination of the amount of aqueous phase and sediments separated from the sludge. Furthermore, the oil phase recovered from the sludge was mixed with fresh crude oil obtained from Al-Hamra Oil Company in 1:1 ratio and the API of the mixture was calculated. Effect of demulsifier system composition and its concentration in parts per million were also studied. It was found that the best demulsifier composition for complete breakdown of the sludge was the one based on NP-13.
581			_a2
773	0		_tJournal of Petroleum Science & Engineering _g78
942			_cARTICULO
100	1		_aAbdel-Azim A. Abdel Azim _952347
100	1		_aAbdul-Raheim M. Abdul-Raheim _952348
999			_c186998 _d186998