Cutting oil removal by continuous froth flotation with packing media under low interfacial tension conditions

Bunturngpratoomrat, Apichaya; Pornsunthorntawee, Orathai; Nitivattananon, Suchaya; Chavadej, Jittipan; Chavadej, Sumaeth

doi:10.1016/j.seppur.2013.01.024

Cited by 15 publications

(11 citation statements)

References 26 publications

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“…Surfactants not only increase the dispersion of air bubbles in the flotation system, but also reduce the coalescence of individual bubbles, enhancing the froth formation and stability (Bunturngpratoomrat et al, 2013). When a surfactant is added to water, the interfacial tension of the solution decreases as a result of preferential adsorption of surfactant molecules at the air/water interface (Chavadej et al, 2004a), resulting in high colloidal removals (Bunturngpratoomrat et al, 2013). To select the surfactant type, the same coagulant and coagulant dose were used.…”

Section: Selection Of Surfactants Coagulants and Froth Doses In Bencmentioning

confidence: 99%

“…To improve the system performance, the key parameters affecting the froth flotation performance, including the residence time in the froth flotation tank and the salinity levels in the influent water (Bunturngpratoomrat et al, 2013) should also be investigated.…”

Section: Deficiencies In the Pilot-scale Designmentioning

confidence: 99%

“…Froth flotation, a surfactant-based separation processes, has been effectively used to remove emulsified oil from wastewater (Bunturngpratoomrat et al, 2013;Chavadej et al, 2004b), to control acid mine drainage in the mining industry (Alam and Shang, 2012), and to deink paper pulp (Theander and Pugh, 2004), among other applications. This process relies on the difference in surface chemistry of particles and their behavior in the gas/liquid, gas/solid and liquid/solid interphases (Al-Zoubi et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A hybrid froth flotation–filtration system as a pretreatment for oil sands tailings pond recycle water management: Bench- and pilot-scale studies

Loganathan

Bromley²,

Chelme-Ayala

et al. 2015

Journal of Environmental Management

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Section: Selection Of Surfactants Coagulants and Froth Doses In Bencmentioning

confidence: 99%

Section: Deficiencies In the Pilot-scale Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A hybrid froth flotation–filtration system as a pretreatment for oil sands tailings pond recycle water management: Bench- and pilot-scale studies

Loganathan

Bromley²,

Chelme-Ayala

et al. 2015

Journal of Environmental Management

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“…The emulsion‐based oil plays a crucial role in metal industries and it can be used as a lubricant during machining operation such as grinding, drilling, turning, milling, etc . The oil‐in‐water emulsion consists of emulsifying agents (surfactants) which reduce the interfacial tension between the oil and water phase and contribute to maintain the emulsion stabilization ,. Furthermore, the requirement of oil consumption has increased in our day today activities due to the requirement of oil based industrial activities worldwide.…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of Metal Ions‐Incorporated Chitosan/β‐Cyclodextrin Composites for Effective Removal of Oil from Oily Wastewater

Elanchezhiyan

Meenakshi

2017

ChemistrySelect

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In this study, metal ions incorporated cyclodextrin functionalized chitosan were synthesized by a simple one‐pot method which was employed to adsorb the oil droplets from oily wastewater. Adsorption behavior of oil molecules were investigated with binary biopolymer acting as a host‐guest interaction. The synthesized composites were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), energy dispersive X‐ray (EDX), powder X‐ray diffraction (XRD), thermogravimetric analysis (TGA) and heat of combustion. The oil adsorption capacity was studied as a function of various parameters such as contact time, pH of the medium, dose of the adsorbent, initial oil concentration, and temperature. pH plays a prominent role in oil adsorption process, as demulsification takes place in acidic medium. The prepared hybrid composites were successfully utilized to remove the oil molecules from oily wastewater. The adsorption data which followed the Langmuir isotherm model and thermodynamic parameters such as standard free energy (▵G°), standard enthalpy (▵H°) and standard entropy (▵S°) indicated that the adsorption of oil molecules onto the prepared hybrid composites were feasible, spontaneous and endothermic in nature at 30 to 50 °C. Thus, the experimental results presented herein indicate that the prepared hybrid composites can be used as the potential adsorbent for the recovery of oil from oily wastewater.

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“…The use of cutting oils helps to increase the life of cutting tools, improve production efficiency, and provide more economical cutting speed. However, the physical and chemical properties of cutting oil deteriorate with time because of long usage [2]. Since they are classified as hazardous wastes their separation from wastewater becomes necessary.…”

Section: Introductionmentioning

confidence: 99%

Comparison of separation processes for the treatment of emulsified oils from water

Köse¹,

Genç²

2015

WIT Transactions on Ecology and the Environment

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In this study, vacuum filtration, coagulation-flocculation, electrocoagulation and centrifugation were applied to separate emulsified oils from water. Two different types of cutting oils (BOR and EAL) were used in the preparation of oil emulsions. BOR has smaller oil droplets than EAL when they are mixed by water. It was not possible to separate BOR from water by microfiltration but 81.7% removal efficiency was obtained for EAL. Alum and ferric chloride were used as coagulants and optimum coagulant dosages, mixing time and pH were determined by performing jar tests. When alum was used as the coagulant, the removal efficiencies for BOR and EAL were 90% and 98%, respectively. In the case of ferric chloride, 98% oil removal was obtained for both emulsions. However, the optimum ferric chloride dosages were much higher than alum. The optimum alum and ferric chloride dosages for BOR emulsion were 0.83 g/L and 6 mg/L, respectively. In the case of EAL emulsion, the corresponding amounts were 4 mg/L and 8 mg/L. The flocculation time was determined around 45 minutes. In order to obtain 98% BOR removal, the emulsion was centrifuged at an angular velocity of 3000 rpm after the coagulation-flocculation process. On the other hand, when BOR and EAL were separated by electrocoagulation, 95% removal rates can be obtained for both oils applying 40 V difference to the aluminum electrodes for 35 minutes. According to the removal efficiencies obtained from the experiments and the preliminary cost analysis it can be concluded that the best method for separating emulsified oils from waters is the electrocoagulation.

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Cutting oil removal by continuous froth flotation with packing media under low interfacial tension conditions

Cited by 15 publications

References 26 publications

A hybrid froth flotation–filtration system as a pretreatment for oil sands tailings pond recycle water management: Bench- and pilot-scale studies

A hybrid froth flotation–filtration system as a pretreatment for oil sands tailings pond recycle water management: Bench- and pilot-scale studies

Facile Fabrication of Metal Ions‐Incorporated Chitosan/β‐Cyclodextrin Composites for Effective Removal of Oil from Oily Wastewater

Comparison of separation processes for the treatment of emulsified oils from water

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