Advancement in treatment of wastewater: Fate of emerging contaminants

Mohapatra, Dipti Prakash; Kirpalani, Deepak M.

doi:10.1002/cjce.23533

Cited by 57 publications

(19 citation statements)

References 113 publications

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“…This would ensure an efficient management of effluents developed to comply with the regulations in force on the discharge of treated effluents. In this context, efficient methods for advanced treatment of effluents polluted with EPs are developed, which include physico-chemical and biological processes (sand and media filtration; chlorination; advanced oxidation processes, AOPs; adsorption using granular activated carbon, zeolite or other clay materials; hydrolysis processes; constructed wetland (CW); membrane bioreactors, phytoremediation, biosorption), as illustrated in Figure 7 [93][94][95]. The application of activated sludge process to remove emerging pollutants is usually recommended to reduce high organic loads, but it is not suitable for removing EPs, especially at very low concentrations or traces of pollutants [96].…”

Section: Short Analysis Of Processes Applied For Eps' Removalmentioning

confidence: 99%

Occurrence and Fate of Emerging Pollutants in Water Environment and Options for Their Removal

Vasilachi

Asiminicesei

Ferţu

et al. 2021

Water

182

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Emerging pollutants (EPs) are chemicals known to cause major impacts on the terrestrial, aquatic life and human health as a result of their chronic and acute toxicity. Although lots of studies on EPs behavior in the aquatic environment are currently available in literature, an urgent requirement exists to complete toxicological studies and develop and implement efficient and ecological methods for their removal. This paper raises some relevant problems related to water environment pollution with EPs, the risks they can generate for aquatic life and humans and opportunities to reduce the effects of pollution by EPs removal. Categories of emerging chemicals of concern in the environment, their sources, fate and impacts, with some examples are discussed. Organic UV filters are shortly presented as a relative new EPs category, with a focus on the need to develop extensive experimental studies on their environmental occurrence, fate and removal. Furthermore, sources for the aquatic environment resulting from discharging EPs directly into rivers from wastewater treatment plants are examined. The incidence of environmental and human health risks related to EPs is also considered. The removal of EPs from the environment as a solution to risk mitigation is addressed, with emphasis on several non-conventional processes involving biological removal of EPs. The paper provides a critical look at the current challenges posed by the presence of emerging pollutants in the aquatic environment, with critical comments and recommendations for further research to reduce the impact of EPs on water and human health and improve the performance of developed methods for their removal.

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Section: Short Analysis Of Processes Applied For Eps' Removalmentioning

confidence: 99%

Occurrence and Fate of Emerging Pollutants in Water Environment and Options for Their Removal

Vasilachi

Asiminicesei

Ferţu

et al. 2021

Water

182

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“…Questi composti raggiungono l'impianto di trattamento delle acque reflue dove possono seguire due percorsi diversi: (i) da un lato, parte di Diclofenac viene assorbita dai fanghi che finendo in discarica, permettono a Diclofenac di entrare nelle acque superficiali per percolazione; (ii) dall'altro lato, Diclofenac rimane nelle acque reflue e viene scaricato direttamente nelle acque superficiali. Pertanto, anche i sistemi convenzionali di trattamento delle acque reflue non sono in grado di abbattere la presenza di questo inquinante con una buona percentuale di rimozione [19,20]. Sfruttando l'affinità delle nanoparticlle di Au per Diclofenac [21], abbiamo testato la capacità del dispositivo di rilevare questa molecola, sfruttando poi la presenza di TiO 2 , al fine di rinnovare la superficie del dispositivo dopo l'analisi, che generalmente porta alla formazione di sottoprodotti che sporcano l'elettrodo, rendendolo inutilizzabile per le rilevazioni successive.…”

Section: Applicazioni Elettroanalitiche Del Dispositivo Au/tiounclassified

QUANDO Lâ€™INSIEME Ãˆ MEGLIO DELLA SOMMA: NANOMATERIALI IBRIDI ARGENTO-TITANIA ED ORO-TITANIA PER SENSORI ELETTROANALITICI

Falciola

Pifferi

Testolin

2020

SCIENZE

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The interest of the scientific community for nanotechnologies and nanomaterials was born in 1959, on the occasion of the annual meeting of the American Physical Society, when a new approach began with which to consider and manipulate matter on a micro- and nano-metric scale. The subsequent increase in the use of nanomaterials in scientific research is due to their peculiar characteristics: increased surface / volume ratio, new optical and physical properties, high active surface, increased or modified material transport, increased selectivity. All these features make nanomaterials extremely suitable for a wide range of applications, from energy, to catalysis and sensors. In recent decades, apart from the application of nanomaterials characterized by a single component, the use of “hybrid” nanomaterials, composed of two or more components in “intimate” contact, is also rapidly growing. This is connected to the fact that, since in a hybrid material the establishment of synergistic properties is confined to the contact region between the different components, in nanomaterials, given the small size, these effects can become a dominant factor of the entire structure. The result is precisely the establishment of new and unexpected properties (often desired and interesting) which are not the simple sum of the ownership of individual contributions. Given all this, hybrid materials are excellent candidates for applications in the most varied fields, including electroanalysis, which can greatly benefit from these systems. In this context, this work aims to present the construction of devices based on hybrid metal-semiconductor nanomaterials (based on silver or gold nanoparticles and titanium dioxide). In these systems, the presence of metal nanoparticles is exploited for the electroanalytical determination of analytes of medical / diagnostic or environmental interest, while the presence of TiO2 is essential for overcoming the problems of fouling and passivation of the electrode surface following the determination of the molecule under examination. . The possibility of renewing the electrode surface simply by irradiating the device with ultraviolet light, allows you to use the devices remotely for a long time, without their continuous recovery. In the case of the Ag-TiO2 system, an “intimate contact” interphase between the silver nanoparticles and titanium dioxide was also found, which makes the hybrid a real new material, with different characteristics and with interesting applications compared to its precursors.

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“…We are all concerned about this problem and the anthropogenic sources are well-know, namely domestic discharges, hospital effluents, industrial wastewaters, runoff from agriculture, livestock and aquaculture, and landfill leachates. It is recognized that, due to insufficient chemical treatment abatement, the discharge of effluents from municipal wastewater treatment plants is an important route for the appearance of chemical substances such as pharmaceuticals in the aquatic environment (Hernández-Padilla et al 2017;Botero-Coy et al 2018;Crini and Lichtfouse 2018;Gallego-Schmid and Tarpani 2019;Inyinbor et al 2019;Mohapatra and Kirpalani 2019;Patel et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Emerging Contaminants: Analysis, Aquatic Compartments and Water Pollution

Morin‐Crini¹,

Lichtfouse²,

Liu³

et al. 2021

Emerging Contaminants Vol. 1

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Over the past two decades, the presence of so-called emerging contaminants in various environmental compartments around the world, such as water, sediments, soils and atmosphere, and in a wide variety of consumer products has become a major concern for society, public health authorities, industry (namely food industry and water sector) and the agricultural sector. Some of these substances are endocrine disruptors and others are proven carcinogens and mutagens. In particular,

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Advancement in treatment of wastewater: Fate of emerging contaminants

Cited by 57 publications

References 113 publications

Occurrence and Fate of Emerging Pollutants in Water Environment and Options for Their Removal

Occurrence and Fate of Emerging Pollutants in Water Environment and Options for Their Removal

QUANDO Lâ€™INSIEME Ãˆ MEGLIO DELLA SOMMA: NANOMATERIALI IBRIDI ARGENTO-TITANIA ED ORO-TITANIA PER SENSORI ELETTROANALITICI

Emerging Contaminants: Analysis, Aquatic Compartments and Water Pollution

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