Understanding oily wastewater treatment via membrane distillation

Han, Le; Tan, Yong Zen; Netke, Tanmay; Fane, Anthony G.; Chew, Jia Wei

doi:10.1016/j.memsci.2017.06.012

Cited by 91 publications

(45 citation statements)

References 33 publications

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“…Oily wastewaters consist of mainly oil, salt, and surfactants, but they also contain numerous harmful compounds: saturated straight‐chain and branched hydrocarbons, cyclic hydrocarbons, olefins, aromatic hydrocarbons, and other non‐organic substances, such as sulfur‐ and nitrogen‐containing compounds, and heavy metals 8,34,35 . The damage caused by oil‐contaminated waters depends on the type, volume, and quality of the polluting oil, but also on the place and conditions of the discharge.…”

Section: Significance Of Treating Oily Wastewatersmentioning

confidence: 99%

“…It is important to study the variation and dependence of these conditions because they can affect the membrane pore, efficiency, fouling, and performance. Much research is being conducted in order to discover the relationship between the characteristics of water and treatment, 35,94 by developing kinetic models, 95 quantifying kinetic rates for different compounds (e.g., surfactants), 96 understanding the interactions between the constituents of the oily wastewater, 97,98 etc.…”

Section: Membrane Filtration To Achieve Higher Purification Efficienciesmentioning

confidence: 99%

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Photocatalytic membrane filtration and its advantages over conventional approaches in the treatment of oily wastewater: A review

Santos

László

Hodúr

et al. 2020

Asia-Pacific J Chem Eng

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Clean water supply has become one of the biggest challenges of the 21st century; therefore, water source protection is of increasing importance. Beyond environmental protection reasons, economic concerns-derived from increasing costs of processing water and wastewater discharge-also prompt industries to use advanced wastewater treatment methods, which ensure higher purification efficiency or even the recycling of water. Therefore, highly effective treatment of oily wastewaters has become an urgent necessity because they are produced in high quantities and have harmful effects on both the environment and human population. However, high purification efficiency can be difficult to achieve, because some compounds are hard to eliminate. Conventional methods are effective for the removal of floating and dispersed oil, but for finely dispersed, emulsified and dissolved oil advanced methods must be used, such as membrane filtration which exhibits several advantages. The application of this technology is restricted by fouling-the major limiting factor-which jeopardizes the membrane performance. In order to reduce fouling, in-depth research is being conducted to make the treatment of oilcontaminated water technically and economically feasible. The present work aims to review the conventional oil separation methods with their limitations and to focus on membrane filtration, which ensures significantly higher purification efficiencies, including the main problem: the flux reduction caused by fouling. This paper also discusses promising solutions, such as membrane modification methods, mostly with hydrophilic and/or photocatalytic nanoparticles and nanocomposites, overviewing the efforts that are being made to develop feasible technologies to treat oil-contaminated waters.

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Section: Significance Of Treating Oily Wastewatersmentioning

confidence: 99%

Section: Membrane Filtration To Achieve Higher Purification Efficienciesmentioning

confidence: 99%

Photocatalytic membrane filtration and its advantages over conventional approaches in the treatment of oily wastewater: A review

Santos

László

Hodúr

et al. 2020

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

show abstract

“…The permeate flux also depends on membrane properties such as porosity, pore size and hydrophilicity (Mohammadi et al 2003;Changmai et al 2017). Due to small pore size of membrane, oil rejection coefficient is higher and use of large pore size membrane leads high permeate flux (Kocherginsky et al 2003;Colle et al 2009;Han et al 2017).…”

Section: 1) Membrane Separation Technologymentioning

confidence: 99%

Treatment of wastewater from petroleum industry: current practices and perspectives

Varjani

Joshi

Srivastava

et al. 2019

Environ Sci Pollut Res

222

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Petroleum industry is one of the fastest growing industry and it significantly contributes to economic growth in developing countries like India. The wastewater from a petroleum industry consist a wide variety of pollutants like petroleum hydrocarbons, mercaptans, oil and grease, phenol, ammonia, sulphide and other organic compounds etc. All these compounds are present as very complex form in discharged water of petroleum industry, which are harmful for environment directly or indirectly. Some of the techniques used to treat oily waste/wastewater are membrane technology, photocatalytic degradation, advanced oxidation process, electrochemical catalysis, etc. In this review paper we aim to discuss past and present scenario of using various treatment technologies for treatment of petroleum industry waste/wastewater. The treatment of petroleum industry wastewater involves physical, chemical and biological processes. This review also provides scientific literature on knowledge gaps and future research directions to evaluate the effect(s) of various treatment technologies available.

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“…Membrane wetting may occur when feed water contains surfactants that can reduce surface tension [21,22]. Surfactants are widely used in household goods, detergents, industrial processes, and pesticides [23].…”

Section: Introductionmentioning

confidence: 99%

Powdered activated carbon (PAC) – vacuum-assisted air gap membrane distillation (V-AGMD) hybrid system to treat wastewater containing surfactants: Effect of operating conditions

Kim

Choi

et al. 2020

Environmental Engineering Research

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Membrane distillation (MD), which uses hydrophobic porous membranes with a temperature gradient to produce pure water, has the potential to treat high-salinity wastewater. However, it cannot directly treat wastewater containing surfactants, which lower the surface tension and thus result in membrane wetting. To overcome this limitation, this study proposed a hybrid process consisting of powdered activated carbon (PAC) adsorption and MD, where PAC removes the surfactants in the wastewater to alleviate the wetting of the MD membranes. A bench-scale vacuum-assisted air gap MD (V-AGMD) equipment was adopted for the treatment of synthetic wastewater containing inorganic salts and surfactants. The conductivity of the permeate from V-AGMD was continuously monitored to detect membrane wetting. Without the use of PAC, the MD membrane was wetted within a short period, which decreased as the surfactant concentration increased. On the other hand, the addition of PAC retards the onset of wetting even at higher surfactant concentrations. The effectiveness of the PAC addition to the MD system on wetting control was examined under various conditions to elucidate its mechanism.

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Understanding oily wastewater treatment via membrane distillation

Cited by 91 publications

References 33 publications

Photocatalytic membrane filtration and its advantages over conventional approaches in the treatment of oily wastewater: A review

Photocatalytic membrane filtration and its advantages over conventional approaches in the treatment of oily wastewater: A review

Treatment of wastewater from petroleum industry: current practices and perspectives

Powdered activated carbon (PAC) – vacuum-assisted air gap membrane distillation (V-AGMD) hybrid system to treat wastewater containing surfactants: Effect of operating conditions

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