Recovery of phenol from aqueous solutions using hollow fibre contactors

González‐Muñoz, María Jesús; Luque, Susana; Alvarez, Julissa; Coca, José

doi:10.1016/s0376-7388(02)00526-4

Cited by 124 publications

(61 citation statements)

References 18 publications

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“…Although the NaOH to FFA molar ratio is stoichiometrically more than sufficient, the slow diffusion of NaOH limits the available concentration at interphase. Gonzalez-Munoz, et al [10] reported the typical result that it is necessary to utilize a ratio of at least 4 to remove 97% phenol from organic solution with aqueous NaOH. In the present work, more than 97% recovery of FFA was successfully obtained at an NaOH to FFA molar ratio of 7.62.…”

Section: Effect Of Sodium Hydroxide Concentrationmentioning

confidence: 99%

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N on Dispersive Chemical Deacidification of Crude Palm Oil in Hollow Fiber Membrane Contactor

Purwasasmita

Nabu

Khoiruddin

et al. 2015

J. Eng. Technol. Sci.

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Abstract. Performance of chemical deacidification of crude palm oil (CPO) using aqueous NaOH solution in a polysulfone hollow fiber ultrafiltration membrane was investigated. The effects of operating temperature, NaOH concentration and flow rates on percentage of free fatty acids (FFA) removal, oil loss, soap entrainment and overall mass transfer coefficient were evaluated. Overall mass transfer coefficients, soap content in oil and neutral oil loss all increased when the temperature was increased from 60 to 70°C due to an increase of the FFA distribution value. A minimum 0.25 N of NaOH or a NaOH to FFA molar ratio of about 7.62 was required to facilitate the expected extraction efficiency. The increased oil flowrate slightly enhanced the solute transport kinetics, while the aqueous phase flowrate did not significantly influence deacidification efficiency or mass transfer coefficient. About 97% of FFA removal was achieved within 4 hours. The maximum oil loss observed was 11% and the highest soap content in the oil without separation step was 3150 ppm. The values of the overall mass transfer coefficient varied from 2.97×10 -7 to 7.71×10 -7 m/s. These results show the potential of using the non dispersive membrane contacting process for chemical deacidification of CPO as well as other vegetable oils.

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Section: Effect Of Sodium Hydroxide Concentrationmentioning

confidence: 99%

“…For a oncethrough operation, the membrane area can be calculated by solving Eqs. (8) and (10), resulting in a common equation for conventional contacting equipment, NTU=L/HTU [9], as follows:…”

Section: Process Potentialsmentioning

confidence: 99%

N on Dispersive Chemical Deacidification of Crude Palm Oil in Hollow Fiber Membrane Contactor

Purwasasmita

Nabu

Khoiruddin

et al. 2015

J. Eng. Technol. Sci.

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“…The use of phenol is considerably high, allow the waste containing phenols will be delivered and pollute the water environment, and most of these compounds are biologically nondegradable pollutant. Phenol concentration in the wastes varies in wide range from several ppm to 2-3% [1]. Therefore, the major concern is to treat the phenol in the waste water before it is discharged into the environment.…”

Section: Introductionmentioning

confidence: 99%

Transport of Phenol Through Inclusion Polymer Membrane (Pim) Using Copoly(eugenol-Dvb) as Membrane Carriers

Kiswandono¹,

Siswanta²,

Aprilita³

et al. 2012

Indones. J. Chem.

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“…Among them, several deal with solubilization with sodium hydroxide (separation) and further acidification (recovery). This approach has been reported by several authors (Han et al, 2001;González-Muñoz et al, 2003;Lazarova and Boyadzhieva, 2004;Ferreira et al, 2005;Jaber et al, 2005;Sawai et al, 2005).…”

Section: Introductionmentioning

confidence: 77%

Recovery of p-TBC from a butadiene washing stream in a pilot plant

Loss

Azevedo

Dezotti

2009

Braz. J. Chem. Eng.

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-Results obtained in a pilot-scale unit designed for COD removal and p-TBC (p-tert-butylcatechol) recovery from a butadiene washing stream (pH 14, 200,000 mg COD L -1 , highly toxic) at a petrochemical industry are presented. By adding H 3 PO 4 , phase separation is achieved and p-TBC is successfully recovered (88 g L -1 of washing stream). Information (time for phase separation and organic phase characterization) was gathered for designing a future industrial unit. The estimated heat generation rate was 990 kJ min -1 and 15 min were enough to promote phase separation for a liquid column of approximately 1.15 m.

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Recovery of phenol from aqueous solutions using hollow fibre contactors

Cited by 124 publications

References 18 publications

N on Dispersive Chemical Deacidification of Crude Palm Oil in Hollow Fiber Membrane Contactor

N on Dispersive Chemical Deacidification of Crude Palm Oil in Hollow Fiber Membrane Contactor

Transport of Phenol Through Inclusion Polymer Membrane (Pim) Using Copoly(eugenol-Dvb) as Membrane Carriers

Recovery of p-TBC from a butadiene washing stream in a pilot plant

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