A review of integrated advanced oxidation processes and biological processes for organic pollutant removal

Nidheesh, P.V.; Couras, Cátia; Karim, Ansaf V.; Nadais, Helena

doi:10.1080/00986445.2020.1864626

Cited by 71 publications

(30 citation statements)

References 309 publications

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“…Other methodologies can be used to overtake the traditional Fenton's drawbacks. The use of other metals (such as Cu, Mn, Cr, Ce, Co, Ru, or Al) instead of Iron (II) can be an option, and this substitution is widely known as Fenton-like processes [68,69,72].…”

Section: Fenton's Reagentmentioning

confidence: 99%

“…Equations ( 14)- (20) present the Fenton's mechanism using Cu 2+ and Mn 2+ [69,72]: (20) Catalyst regeneration also occurs when Cu 2+ and Mn 2+ are used, due to the interaction with H 2 O 2 . The use of copper allows the existence of neutral and alkaline pH operations [69], which can be an advantage over the traditional Fenton's since this pH range would cause the precipitation of Fe 3+ (in Fe(OH) 3 form) in the conventional Fenton [40].…”

Section: Fenton's Reagentmentioning

confidence: 99%

“…The use of copper allows the existence of neutral and alkaline pH operations [69], which can be an advantage over the traditional Fenton's since this pH range would cause the precipitation of Fe 3+ (in Fe(OH) 3 form) in the conventional Fenton [40]. Moreover, an increase in hydroxyl radical's generation can occur when magnetite substituents with transition metals are used [72].…”

Section: Fenton's Reagentmentioning

confidence: 99%

“…However, Fenton-like processes also present disadvantages such as the existence of cytotoxic characteristics of metals, complex mechanisms, related high-costs, difficult anaerobic conditions, pH limitations, metal leaching, and loss of catalyst efficiency, depending on the type of metal used [72]. In general, metals do not allow good catalyst reuse and their reuse is only possible for a few cycles [72].…”

Section: Fenton's Reagentmentioning

confidence: 99%

See 3 more Smart Citations

Paraben Compounds—Part II: An Overview of Advanced Oxidation Processes for Their Degradation

2021

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Water scarcity represents a problem for billions of people and is expected to get worse in the future. To guarantee people’s water needs, the use of “first-hand water” or the reuse of wastewater must be done. Wastewater treatment and reuse are favorable for this purpose, since first-hand water is scarce and the economic needs for the exploration of this type of water are increasing. In wastewater treatment, it is important to remove contaminants of emerging concern, as well as pathogenic agents. Parabens are used in daily products as preservatives and are detected in different water sources. These compounds are related to different human health problems due to their endocrine-disrupting behavior, as well as several problems in animals. Thus, their removal from water streams is essential to achieve safe reusable water. Advanced Oxidation Processes (AOPs) are considered very promising technologies for wastewater treatment and can be used as alternatives or as complements of the conventional wastewater treatments that are inefficient in the removal of such contaminants. Different AOP technologies such as ozonation, catalytic ozonation, photocatalytic ozonation, Fenton’s, and photocatalysis, among others, have already been used for parabens abatement. This manuscript critically overviews several AOP technologies used in parabens abatement. These treatments were evaluated in terms of ecotoxicological assessment since the resulting by-products of parabens abatement can be more toxic than the parent compounds. The economic aspect was also analyzed to evaluate and compare the considered technologies.

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Section: Fenton's Reagentmentioning

confidence: 99%

Section: Fenton's Reagentmentioning

confidence: 99%

Section: Fenton's Reagentmentioning

confidence: 99%

Section: Fenton's Reagentmentioning

confidence: 99%

See 2 more Smart Citations

Paraben Compounds—Part II: An Overview of Advanced Oxidation Processes for Their Degradation

2021

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“…Issues of integrated wastewater treatment are especially relevant in recent years, due to the fact that environmental requirements for the degree of purification of water used by enterprises are constantly tightening, as well as the requirements to ensure the safety of the technological process [1,2]. Difficulties of solving the issues of wastewater treatment are certainly related to the complexity and variability of the composition, as well as the impressive economic costs of apparatus design and reagents.…”

Section: Introductionmentioning

confidence: 99%

Improving the efficiency of technological processes for the treatment of highly concentrated wastewater to ensure environmental safety

Andreeva

2021

E3S Web Conf.

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The complexity of biochemical wastewater treatment is most often due to the presence of a large number of organic impurities, causing the death of the biological community of activated sludge microorganisms. Application of the method of lowering the pH of industrial effluents to minimum value reduces the solubility of organic substances in water, separating them into a separate layer of emulsified wastewater. In this case, the process of removing organic impurities from treated wastewater becomes the most accessible, but also requires solving the problems of technological and environmental safety. Dissolution of wastewater organic impurities separated into a separate layer a solvent – the extractant followed by the extraction of organic components extracted from it, reduces the level of wastewater pollution with organic substances according to the oxidation index (COD) to an acceptable level. The technology of the applied method allows for the final treatment using biological methods; and practically constructively mounts and build a new modernized technological line.

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Recent Advance of Atomically Dispersed Dual‐Metal Sites Carbocatalysts: Properties, Synthetic Materials, Catalytic Mechanisms, and Applications in Persulfate‐Based Advanced Oxidation Process

Wei

Cui

et al. 2023

Adv Funct Materials

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Recently, atomically dispersed dual‐metal sites carbocatalysts (DMSCs) make a wave in the field of persulfate‐based advanced oxidation processes (PS‐AOPs) in light of their ≈100% atomic utilization efficiency, high density of active sites, and superior catalytic activity. This review aims to provide a state‐of‐the‐art overview on the development of DMSCs for activating PS. Initially, the types and properties of DMSCs are summarized, as well as the role of doping different heteroatoms is discussed. Subsequently, the properties of different carbon carriers and the methods for the synthesis of DMSCs are outlined. After that, the mechanism and application of DMSCs for the activation of PS toward organic contaminants degradation are revealed. Particularly, the mechanism of nonradical pathway is described, and the necessity of coupling DMSCs‐based PS‐AOPs to other processes for practical water treatment is emphasized. Finally, the formidable challenges and future research directions of DMSCs are proposed. This review is expected to provide insight into the preparation of DMSCs in the field of nanomaterials and to broaden the path for their environmental applications.

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A review of integrated advanced oxidation processes and biological processes for organic pollutant removal

Cited by 71 publications

References 309 publications

Paraben Compounds—Part II: An Overview of Advanced Oxidation Processes for Their Degradation

Paraben Compounds—Part II: An Overview of Advanced Oxidation Processes for Their Degradation

Improving the efficiency of technological processes for the treatment of highly concentrated wastewater to ensure environmental safety

Recent Advance of Atomically Dispersed Dual‐Metal Sites Carbocatalysts: Properties, Synthetic Materials, Catalytic Mechanisms, and Applications in Persulfate‐Based Advanced Oxidation Process

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