Secondary drop production in packed-bed coalescers

Sharifi, H.; Shaw, John M.

doi:10.1016/0009-2509(96)00321-1

Cited by 18 publications

(16 citation statements)

References 4 publications

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“…The emulsion was continuously forced by a membrane dosage pump. The settled oil was discharged discontinuously through the valve (6). The experiments were carried out in a steady-state regime, which was achieved by preoiling the fibers.…”

Section: Equipment and Operating Proceduresmentioning

confidence: 99%

Effect of the Nature of Different Polymeric Fibers on Steady-State Bed Coalescence of an Oil-in-Water Emulsion

Sokolović

2004

Ind. Eng. Chem. Res.

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The effect of different polymeric fibers on non-Brownian oil drop steady-state bed coalescence was investigated. Three polymeric low-energy smooth fibers were used: polyethylene, polyester, and polyurethane. The oil-in-water system was used as the model of an unstable emulsion, with the drop size smaller than the pore size. Experiments were carried on geometrically similar beds over a wide range of bed permeability (porosity) and a wide range of fluid velocity, from 16 to 70 m h -1 . The bed coalescence efficiency was followed via the effluent oil concentration and critical velocity. The unexpectedly large differences in critical velocities obtained on the investigated materials correlated well with the critical surface tension.

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Section: Equipment and Operating Proceduresmentioning

confidence: 99%

Effect of the Nature of Different Polymeric Fibers on Steady-State Bed Coalescence of an Oil-in-Water Emulsion

Sokolović

2004

Ind. Eng. Chem. Res.

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“…(Sharifi and Shaw, 1996), addition of flucculants and/or a second buoyant particulate phase (Weiland and McPherson 1979) are not applicable as limitations concerning the utilization of extemai objects and cornplicated structures for settling vessels are encountered particularly in metallurgical applications. Therefore improvements in recovery rates for fine drops must be realized by other techniques.…”

Section: Gas Phasementioning

confidence: 99%

Fine drop recovery in batch gas-agitated liquid–liquid systems

Shahrokhi

Shaw

2000

Chemical Engineering Science

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“…The authors showed that the separation efficiency of a polypropylene fiber bed was in the range of separation efficiencies realized with other investigated materials [16]. Possibilities of applying different forms of polypropylene as a filter material are still being in the focus of many researches [17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Application of waste polypropylene bags as filter media in coalescers for oily water treatment

Sokolović¹,

Kiralj

Jokic

2019

Hem Ind

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The polypropylene fibers have been used in bed coalescers for separation of micro-sized oil droplets from water for a long time. Possibilities of applying different forms of polypropylene as filter beds are still being in the focus of many researches. The possibility of applying waste polypropylene bags used for packing vegetables (PPDJ) was investigated in this paper. The results are compared with results obtained by applying waste polypropylene fibers from carpet production (PP). It is well known that there are difficulties to separate the oils of low viscosity by polymer fiber beds. Due to the above mentioned, the presented research refers to separation of low viscosity mineral oil from water. The obtained experimental results confirm that the material PPDJ could be efficiently used as a bed material for coalescers. The critical velocity of 50 m h -1 could be reached at using both polypropylene forms that is from bags PPDJ and from the carpet industry PP, when the adequate bulk density of materials is used.

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Secondary drop production in packed-bed coalescers

Cited by 18 publications

References 4 publications

Effect of the Nature of Different Polymeric Fibers on Steady-State Bed Coalescence of an Oil-in-Water Emulsion

Effect of the Nature of Different Polymeric Fibers on Steady-State Bed Coalescence of an Oil-in-Water Emulsion

Fine drop recovery in batch gas-agitated liquid–liquid systems

Application of waste polypropylene bags as filter media in coalescers for oily water treatment

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