Emerging usage of electrocoagulation technology for oil removal from wastewater: A review

An, Chunjiang; Huang, Guohe; Yao, Yao; Zhao, Shan

doi:10.1016/j.scitotenv.2016.11.062

Cited by 372 publications

(102 citation statements)

References 172 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Currently, many techniques such as coagulation‐flocculation, chemical precipitation, oxidation or ozonation, photo degradation, ion exchange, membrane separation, aerobic or anaerobic treatment, solvent extraction, and electro‐chemical treatment are used to remove dyes from water. Adsorption with suitable adsorbents can be a viable alternative for removing pollutants from effluent . A wide range of adsorbents used for dye removal have been reported in previous studies.…”

Section: Introductionmentioning

confidence: 99%

Transport of reactive X‐3B dye at the interface between cationic surfactant‐modified water‐quenched blast furnace slag and aqueous solution

Wang

Huang

et al. 2018

Can J Chem Eng

Self Cite

View full text Add to dashboard Cite

There is an emerging interest in the utilization of low‐cost industrial wastes in sustainable pollution control. This study investigated the use of water‐quenched blast furnace slag modified by cetyltrimethyl ammonium bromide as a low‐cost adsorbent for the removal of reactive brilliant red X‐3B from an aqueous solution. The results showed that the removal efficiency increased with an increasing slag dosage and an appropriate dosage for adsorption was 8 g/L. The adsorption efficiency of X‐3B onto modified slag decreased when the pH increased from 2 to 12. The amount of dye uptake per unit of modified slag also increased with an increase in ionic strength, contact time, temperature, and initial dye concentration. The Freundlich isotherm model showed a good fit to the equilibrium adsorption data. Thermodynamic studies suggested the spontaneous and endothermic nature of the adsorption process. The adsorption kinetics followed the pseudo‐second‐order model and the rate constant increased with increasing temperature. These results can help understand the migration patterns of dye molecules at a modified slag‐water interface. It also has important implications for developing wastewater treatment techniques using low‐cost adsorbents.

show abstract

Section: Introductionmentioning

confidence: 99%

Transport of reactive X‐3B dye at the interface between cationic surfactant‐modified water‐quenched blast furnace slag and aqueous solution

Wang

Huang

et al. 2018

Can J Chem Eng

Self Cite

View full text Add to dashboard Cite

show abstract

“…Many conventional oil–water separation techniques are being currently applied such as dispersants, absorbents, and centrifugation, yet such methods are limited in terms of efficiency, operation cost, environmental impact, and simplicity. Membrane filtration is a promising separation technique that is widely used in wastewater treatment, food processing, pharmaceutical, and desalination industries . Remarkable oil removal efficiency, improved effluent quality, and reduced energy cost marks membrane separation technology as one of the most successful separation methods for various industries.…”

Section: Introductionmentioning

confidence: 99%

Electrospun polymer blend with tunable structure for oil–water separation

Jurdi

Zaidouny

Daher

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

In this study, polyurethane (PU) alone or in blend with 10% polystyrene (PS) or poly(vinylidene fluoride‐co‐hexafluoropropylene) (PVDF‐HFP) was used for electrospinning (ES) of nanofibers. The optimum conditions for obtaining the minimum fiber diameter were found to be [polymer] = 10 wt %, polymer feed rate = 2 mL h−1, voltage = 21 kV, tip to collector distance = 21 cm, and the drum speed = 600 rpm. The time of ES was used as a parameter for controlling the thickness and the average pore size diameter of the membranes. The average pore size diameter decreased almost linearly by increasing the thickness. The resulting electrospun membranes were hydrophobic and oleophilic in nature with the water contact angle above 130°. The hydrostatic pressure head of the membranes increased by decreasing the average pore size diameter. The maximum initial oil separation flux was achieved for the membranes with larger average pore size diameters in the order of: PU9:1PS > PU > PU9:1PVDF‐HFP. The membranes were used for four consecutive cycles without any noticeable loss of separation performance. The diesel oil recovery percentage after 1 h was found to be above 85% for the PU9:1PS and PU membranes. A commercially available polytetrafluoroethylene membrane, with a thickness of 94 μm and the average pore size diameter of 0.45 μm, was used for benchmarking. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46890.

show abstract

“…EC is composed of a current generator and electrodes that are in general made from aluminium (Al), stainless steel (SS) and iron (Fe) [1,2]. Electrocoagulation treatment is effective for many types of wastewater [3] such as wastewater contaminated by oil [4], acid dyes [5], pharmaceutical products [6], pulp and paper manufacturing [7], phosphate-contaminated surface water [8]. The principle of EC is oxidation reaction at Anode and reduction at Cathode [9] which can be represented in Equations (1)(2)(3)(4):…”

Section: Introductionmentioning

confidence: 99%

Using Waste from Food Cans as Electrode in Electrocoagulation for Wastewater Treatment

Soonsorn¹,

Khuanmar²,

Padungthon³

et al. 2018

IJET

View full text Add to dashboard Cite

Wastes from soda and milk cans which contain metals can be used as electrode in Electrocoagulation (EC) technique. The study used wastewater from dyeing and finishing process of textile factory. Both the electrodes made from soda cans and milk cans were compared to the conventional electrodes made from aluminium sheet. Characterization of aluminium (Al) element in electrode showed 67.28% in aluminium sheets, 4.99% in soda cans, and 0% in milk cans. Nevertheless, only milk cans contain iron (Fe) and tin (Sn) at 45.87% and 23.87%, respectively. Based on treatment efficiency in COD removal from the real wastewater, it turned out that the highest efficiency was from aluminium sheets, at 83.57%, whereas soda-can electrodes and milk-can electrodes were 80.71% and 71.14%, respectively. This could result from the fact that soda-can electrodes contain high percentage of aluminium while milk-can electrodes have no aluminium, leading to its low efficiency. Although Fe in milk can function as electrodes, the efficiency cannot be compared to electrodes made from soda cans. Therefore, soda cans make an efficient material for electrodes because of its high percentage of aluminium. Analysis of SEM images demonstrated compactly agglomerated sludge from aluminium electrodes and soda-can electrodes. The image from testing milk can material demonstrated in contrast loosely agglomerated sludge. It can be concluded that the use of electrodes containing aluminium produces relatively more effective sedimentation.

show abstract

Emerging usage of electrocoagulation technology for oil removal from wastewater: A review

Cited by 372 publications

References 172 publications

Transport of reactive X‐3B dye at the interface between cationic surfactant‐modified water‐quenched blast furnace slag and aqueous solution

Transport of reactive X‐3B dye at the interface between cationic surfactant‐modified water‐quenched blast furnace slag and aqueous solution

Electrospun polymer blend with tunable structure for oil–water separation

Using Waste from Food Cans as Electrode in Electrocoagulation for Wastewater Treatment

Contact Info

Product

Resources

About