Removal of dyes, oils, alcohols, heavy metals and microplastics from water with superhydrophobic materials

Rius-Ayra, Oriol; Biserova-Tahchieva, Alisiya; Llorca-Isern, Núria

doi:10.1016/j.chemosphere.2022.137148

Cited by 18 publications

(5 citation statements)

References 134 publications

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“…Dyes are substances that are mostly employed in the manufacturing of fabrics and leatherette [123]. Dyes have complicated chemical structures and frequently originated from artificial materials.…”

Section: Dyesmentioning

confidence: 99%

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A Comprehensive Review of the Developments in Electrocoagulation for the Removal of Contaminants from Wastewater

Ammar,

Yousef,

Mahmoud

et al. 2023

Separations

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Water organic pollution has become a major issue. A large number of people suffer from the decline in water quality. In addition, polluted water can lead to health problems or excessive deaths. In this regard, an increasingly important method for efficient water treatment is electrocoagulation (EC), the technology that encompasses a small equipment size combined with a simple operation compared to other water treatment methods. The importance of EC is especially accentuated by the recent decarbonization efforts due to the increasing availability of renewable electricity systems. This review provides an overview of the most recent developments in EC technology as it pertains to wastewater treatment. The EC is preferred for organic wastewater treatment over other traditional treatment methods due to its easy setup and low material costs. Moreover, the EC is very powerful in destabilizing organic impurities by charge neutralization and then coagulating to form flocs. In addition, EC has shown high efficiency not only in removing various organic pollutants but also in emerging persistent contaminants, such as microplastics. For these reasons, the EC mechanisms and related functional modalities are reviewed, as well as extensive details are provided on the diversity of the removed contaminants. Overall, this review provides significant new knowledge of interest for environmental chemical researchers in particular and engineers in general on the details of the EC technology for wastewater treatment and water purification.

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Section: Dyesmentioning

confidence: 99%

“…Industrial artificial colors are characterized as organic compounds that withstand oxidizing substances, heating, and radiation and also resist aerobic digestion [124]. Further, they often include significant amounts of soluble toxic substances, including emulsifying agents [123].…”

Section: Dyesmentioning

confidence: 99%

A Comprehensive Review of the Developments in Electrocoagulation for the Removal of Contaminants from Wastewater

Ammar,

Yousef,

Mahmoud

et al. 2023

Separations

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“…Hydrophobic and superhydrophobic materials, i.e., materials with a water contact angles greater than 90 and 150°, respectively, are of interest for a variety of applications, including oil–water separations, moisture-repellent coatings, waterproof clothing, etc. − Incorporating porosity into such materials broadens the range of their applications, enabling the removal of trace lipophilic contaminants from water or air, carbon dioxide capture under humid conditions, and selective recognition of hydrophobic molecules, among other functions. − …”

Section: Introductionmentioning

confidence: 99%

Just Soaping Them: The Simplest Method for Converting Metal Organic Frameworks into Superhydrophobic Materials

Evangelou,

Pournara,

Karagianni

et al. 2024

ACS Appl. Mater. Interfaces

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The incorporation of superhydrophobic properties into metal organic framework (MOF) materials is highly desirable to enhance their hydrolytic stability, gas capture selectivity in the presence of humidity and efficiency in oil−water separations, among others. The existing strategies for inducing superhydrophobicity into MOFs have several weaknesses, such as increased cost, utilization of toxic reagents and solvents, applicability for limited MOFs, etc. Here, we report the simplest, most eco-friendly, and cost-effective process to impart superhydrophobicity to MOFs, involving a rapid (90 min) treatment of MOF materials with solutions of sodium oleate, a main component of soap. The method can be applied to both hydrolytically stable and unstable MOFs, with the porosity of modified MOFs approaching, in most cases, that of the pristine materials. Interestingly, this approach was used to isolate superhydrophobic magnetic MOF composites, and one of these materials formed stable liquid marbles, whose motion could be easily guided using an external magnetic field. We also successfully fabricated superhydrophobic MOF-coated cotton fabric and fiber composites. These composites exhibited exceptional oil sorption properties achieving rapid removal of floating crude oil from water, as well as efficient purification of oil-in-water emulsions. They are also regenerable and reusable for multiple sorption processes. Overall, the results described here pave the way for an unprecedented expansion of the family of MOF-based superhydrophobic materials, as virtually any MOF could be converted into a superhydrophobic compound by applying the new synthetic approach.

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“…Such microplastics are considered as pollutants with potential environmental risks in both aquatic and terrestrial ecosystems. In addition to their direct acute biotoxicity [4], microplastics can be enriched with a number of organic pollutants, thus creating ecological risks [5]. Microplastics find their way through plastic manufacturing, household waste, wear and tear of plastic products, decomposition of plastic waste, and ultimately in air, soil and water [6].…”

Section: Introductionmentioning

confidence: 99%

Study on the Removal Effect of 3DEPs on Microplastics in Groundwater and Desalination Mechanism

He,

Zhi,

Wang

2024

FSE

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Owing to water scarcity, groundwater quality has become an important constraint on sustainable regional development, especially in coastal areas. Coastal groundwater is subject to natural conditions and intense human activities, and the evolution of water quality is extremely complex, with the possibility of seawater intrusion into the groundwater, leading to the salinisation of freshwater aquifers. At present, the commonly used methods for removing groundwater pollution include coagulation, adsorption, biological method, membrane technology, etc., among which the coagulation method is more commonly used. At present, three-dimensional electrode electrochemical technology is widely used in high salinity organic wastewater and many organic wastewaters, but there are few studies related to microplastic removal by three-dimensional electrode electrochemical technology using metallic aluminium particles as particle electrodes. The treatment of microplastics in coastal groundwater is a relatively novel issue, and with the increasing application of three-dimensional electrochemical technology in the study of desalination, the three-dimensional electrode electrochemical technology will be promising due to the high salinity of coastal groundwater, the increasingly serious pollution of microplastics, and the fluctuation of water quality and quantity.

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Removal of dyes, oils, alcohols, heavy metals and microplastics from water with superhydrophobic materials

Cited by 18 publications

References 134 publications

A Comprehensive Review of the Developments in Electrocoagulation for the Removal of Contaminants from Wastewater

A Comprehensive Review of the Developments in Electrocoagulation for the Removal of Contaminants from Wastewater

Just Soaping Them: The Simplest Method for Converting Metal Organic Frameworks into Superhydrophobic Materials

Study on the Removal Effect of 3DEPs on Microplastics in Groundwater and Desalination Mechanism

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