Electrolytic Treatment of Wastewater in the Oil Industry

Cerqueira, Alexandre Andrade; Marques, Mônica Regina da Costa

doi:10.5772/50712

Cited by 7 publications

(4 citation statements)

References 42 publications

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“…These ions are attracted by the colloidal particles and their charges are neutralized to allow coagulation to take place. The hydrogen gas formed at the cathode is then interact with the particles to facilitate the removal of the unwanted materials (Andrade & Costa Marques 2012).…”

Section: Electrochemical Separationmentioning

confidence: 99%

Applications of Emerging Nanomaterials for Oily Wastewater Treatment

Goh

Ong

et al. 2019

Nanotechnology in Water and Wastewater Treatment

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The huge volume of oily wastewater produced from the industries has resulted in alarming environmental pollution and resource usage problems. A wide range of conventional and emerging approaches have been established to effectively reduce all these pollutants to an acceptable level to discharge the treated wastewater for reuse. Lately, nanomaterials have shown great potential to address this issue based on their unique and exceptionally properties such as high surface area, superhydrophilicity/hydrophobicity and surface functionalities. This chapter discusses the application of emerging nanomaterials for oily wastewater treatment. The characteristics of these nanomaterials and their hybrid or nanocomposites for oily water treatment are discussed. Finally, a brief future outlook and concluding remarks are presented.

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Section: Electrochemical Separationmentioning

confidence: 99%

Applications of Emerging Nanomaterials for Oily Wastewater Treatment

Goh

Ong

et al. 2019

Nanotechnology in Water and Wastewater Treatment

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“…which includes many processes for treating wastewater in order to meet international treatment standards [1][2][3][4][5][6][7].…”

Section: No20 Journal Of Petroleum Research and Studies (Jprands)mentioning

confidence: 99%

“…However, this causes damage to the environment, with the main perpetrator being produced water. Oil and its byproducts can be considered as the most important pollutants, as a result of the increasing amounts that have been extracted and processed [5]. Oil in wastewater may be existed in many forms including floating, dispersed and emulsified with the latter being the most difficult to treat.…”

Section: No20 Journal Of Petroleum Research and Studies (Jprands)mentioning

confidence: 99%

Electrocoagulation Treatment of Oily Wastewater in the Oil Industry

Al-Rubaiey¹,

Al-Barazanjy²

2021

Journal of Petroleum Research and Studies

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Electrocoagulation has turned out to be a rapidly growing area of wastewater treatment due toits ability to remove contaminants that are generally more difficult to remove by filtration orchemical treatment systems. These pollutants may include emulsified oil, petroleumhydrocarbons, suspended solids, and heavy metals. In this novel technology, metal cations arereleased into the wastewater through dissolving metal electrodes. Simultaneously, beneficialside reactions can help in removing flocculated material from the water.Oily wastewater represents a dangerous threat when discharged to the environment; thereforetreating it becomes vital in oil industry. This research has investigated electrocoagulation as asimple, effective and economic technique for treatment of such wastewater. Bench scale reactorwas used to evaluate the factors that may affect the treatment of oily wastewater. Aluminumwas used as a sacrificial anode. Electrodes were arranged at different configurations to selectthe optimal one. Other tested operation parameters include time of treatment, current density,distance between the electrodes, and the electrolyte concentration of the emulsion. Theexperimental results indicated that electrocoagulation was very efficient and able to achieve94% turbidity removal in less 60 min, pH:7, current density of 45 (A/m2).Also the effect of initial concentration of oil (100-1000 ppm) in wastewater, applied voltage(10-20 v), the dose of NaCl electrolyte (0-1 g) and temperature (35-60 oC) were optimized.What distinguishes this work is the the type of the electrodes configuration. Circular horizontalAl/Al electrodes (Ø12 cm) with 17 holes (Ø7 mm) have been found to give the bestelectrocoagulation environment and thus optimum results. The associated electrical energyconsumption is 1.6 kW h/m3 for flotation times of 60 min.

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“…Although the ceramic membrane process has many advantages in sewage treatment, membrane fouling remains as an obstacle for wide applications of ceramic membranes (Li et al, 2020). Previous studies have achieved enhanced filterability of ceramic membrane by coupling with coagulation/flocculation and peroxidation processes (Cerqueira & da Costa Marques, 2012;Zhao et al, 2014). Though ceramic membranes have drawn increasing attention in the research field of industrial wastewater treatment (Padaki et al, 2015;Park et al, 2020;Sun et al, 2019;Zhang et al, 2020), its feasibility in treating fracturing fluids produced at shale gas sites has not been evaluated.…”

Section: Introductionmentioning

confidence: 99%

Integration of coagulation and ozonation with flat‐sheet ceramic membrane filtration for shale gas hydraulic fracturing wastewater treatment: A laboratory study

Song

Liu³

et al. 2021

Water Environment Research

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The performance of the integrated process of coagulation and ozonation with ceramic membrane filtration was evaluated for the treatment of shale gas hydraulic fracturing flowback wastewater (HFFW). The removal efficiencies of carbon oxygen demand (CODCr), dissolved organic carbon (DOC), petroleum oils, and turbidity in effluent by the combined process were 87.1%, 72.2%, 94.3%, and 99.6%, respectively. Compared with sole membrane filtration, the transmembrane pressure (TMP) of ceramic membrane filtration was reduced by >99% with the integrated process. The coagulation and ozonation can effectively remove the organics with high molecular weights in the cake layer of ceramic membrane. To the best of our knowledge, this work proposed the combined process of coagulation, ozonation, and flat‐sheet ceramic membrane filtration for the treatment of HFFW for the first time. The water quality of the effluent met the discharge standard (Comprehensive Wastewater Discharge Standard GB8978‐1996). The findings can provide an important technical foundation for the innovation of integrated equipment for HFFW treatment. Practitioner points An integrated process combining coagulation and ozonation with flat‐sheet ceramic membrane ultrafiltration for the treatment of shale gas wastewater. The water quality of this integrated process met the discharge standard. Coagulation and ozonation effectively alleviated the membrane fouling related to organics with high molecular weights. A new avenue for on‐site treatment of shale gas wastewater and an alternative of the current centralized wastewater management.

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Electrolytic Treatment of Wastewater in the Oil Industry

Cited by 7 publications

References 42 publications

Applications of Emerging Nanomaterials for Oily Wastewater Treatment

Applications of Emerging Nanomaterials for Oily Wastewater Treatment

Electrocoagulation Treatment of Oily Wastewater in the Oil Industry

Integration of coagulation and ozonation with flat‐sheet ceramic membrane filtration for shale gas hydraulic fracturing wastewater treatment: A laboratory study

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