Simultaneous removal of pollutants from water using nanoparticles: A shift from single pollutant control to multiple pollutant control

Hlongwane, Gloria Ntombenhle; Sekoai, Patrick T.; Meyyappan, M.; Moothi, Kapil

doi:10.1016/j.scitotenv.2018.11.257

Cited by 163 publications

(47 citation statements)

References 241 publications

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“…Further research should also focus on eventual technical treatments, including biosorbents and other materials to retain and/or inactive this and other pathogens circulating in these environmental compartments, before and after going out from wastewater treatment plants (in case of these treatment systems existing, as it could be worse, with spreading of untreated wastes). Some previous papers (such as those by Auffret et al, 2019;Hlongwane et al, 2019) could be considered as reference to program future studies. Also, the "sewage epidemiology approach" could be very useful, as this monitoring concept went from an initial focus on illicit drugs (van Nuijs et al, 2011) to the current view (also called "wastewater-based epidemiology"), covering a broad array of substances in wastewater, including virus particles (Daughton, 2020;Sims and Kasprzyk-Hordern, 2020), and it would allow a drastic reduction in the time needed to develop a wastewater monitoring approach specifically designed for SARS-CoV-2 (Daughton, 2020).…”

Section: Discussionmentioning

confidence: 99%

What do we know about the SARS-CoV-2 coronavirus in the environment?

Núñez‐Delgado

2020

Science of The Total Environment

107

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Section: Discussionmentioning

confidence: 99%

What do we know about the SARS-CoV-2 coronavirus in the environment?

Núñez‐Delgado

2020

Science of The Total Environment

107

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“…The past three decades have been a period of an uncoordinated search of inexpensive, reactive Fe 0 materials (including nano-Fe 0 ) [117,118]. The inherent generation of FeCPs has been regarded as a curse for the system.…”

Section: Discussionmentioning

confidence: 99%

The Impact of Selected Pretreatment Procedures on Iron Dissolution from Metallic Iron Specimens Used in Water Treatment

Ndé-Tchoupé

Lufingo

et al. 2019

Sustainability

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Studies were undertaken to determine the reasons why published information regarding the efficiency of metallic iron (Fe 0 ) for water treatment is conflicting and even confusing. The reactivity of eight Fe 0 materials was characterized by Fe dissolution in a dilute solution of ethylenediaminetetraacetate (Na 2 -EDTA; 2 mM). Both batch (4 days) and column (100 days) experiments were used. A total of 30 different systems were characterized for the extent of Fe release in EDTA. The effects of Fe 0 type (granular iron, iron nails and steel wool) and pretreatment procedure (socking in acetone, EDTA, H 2 O, HCl and NaCl for 17 h) were assessed. The results roughly show an increased iron dissolution with increasing reactive sites (decreasing particle size: wool > filings > nails), but there were large differences between materials from the same group. The main output of this work is that available results are hardly comparable as they were achieved under very different experimental conditions. A conceptual framework is presented for future research directed towards a more processed understanding.Sustainability 2019, 11, 671 2 of 20 organic [27,28], fluoride [29][30][31], heavy metals [32,33], nitrate [34,35], pathogens [36][37][38] and radionuclides [32,39]. The desalination of water using Fe 0 has also been reported [40][41][42][43]. The two key advantages of Fe 0 are its affordability and its universal availability (iron nails, scrap iron and steel wool) [9,10,44,45]. It is commonly reported that the major drawback of Fe 0 -based technologies for water treatment is the low intrinsic reactivity of granular materials [28,33,46]. This situation is said to be aggravated by the inherent generation of an oxide scale at the Fe 0 surface (passivation). Countermeasures to overcome Fe 0 passivation were recently reviewed by Guan et al. [28] and further discussed by Noubactep [47]. It is recalled that, considering passivation as a "curse" contradicts the evidence that Fe 0 -based subsurface permeable barriers have been successfully working for more than one decade [48][49][50]. On the other hand, increased "passivation" should have occurred in the spongy iron filters in Antwerpen as well [2,19]. Clarifying this contradiction is certainly a progress for the whole Fe 0 technology. Clearly, an understanding of the role of "passivation" in the process of decontamination using Fe 0 should be useful for enhancing the system's efficiency in practice [30,31,47].There is an agreement on the evidence that using Fe 0 for water treatment and environmental remediation is "putting corrosion to use" [51][52][53]. There is otherwise a contradiction on practically any other aspect concerning the Fe 0 /H 2 O system, including the reaction mechanisms and factors determining the long-term efficiency of such systems [9,28,47,[54][55][56][57][58]. A key reason for this is the large variability of experimental conditions used in testing Fe 0 materials [58][59][60][61][62]. The main influencing operational parameter seems to be Fe 0 itself [58,61,63,6...

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“…[25] Macroscopic Pollutants Marine debris Plastic pollution. [26] Sewage and contaminated water Domestic Wastewater Water borne diseases [27] but productive revolutions in this field are still lacking. Moreover, an extensive effort has been focused toward the progress of solar photoreactors [63][64][65].…”

Section: Water Pollutants Source Of Pollutants Effect Of Pollutants Rmentioning

confidence: 99%

Role of Nanomaterials in the Treatment of Wastewater: A Review

Yaqoob

Parveen

Umar

et al. 2020

Water

490

160

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Water is an essential part of life and its availability is important for all living creatures. On the other side, the world is suffering from a major problem of drinking water. There are several gases, microorganisms and other toxins (chemicals and heavy metals) added into water during rain, flowing water, etc. which is responsible for water pollution. This review article describes various applications of nanomaterial in removing different types of impurities from polluted water. There are various kinds of nanomaterials, which carried huge potential to treat polluted water (containing metal toxin substance, different organic and inorganic impurities) very effectively due to their unique properties like greater surface area, able to work at low concentration, etc. The nanostructured catalytic membranes, nanosorbents and nanophotocatalyst based approaches to remove pollutants from wastewater are eco-friendly and efficient, but they require more energy, more investment in order to purify the wastewater. There are many challenges and issues of wastewater treatment. Some precautions are also required to keep away from ecological and health issues. New modern equipment for wastewater treatment should be flexible, low cost and efficient for the commercialization purpose.

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Simultaneous removal of pollutants from water using nanoparticles: A shift from single pollutant control to multiple pollutant control

Cited by 163 publications

References 241 publications

What do we know about the SARS-CoV-2 coronavirus in the environment?

What do we know about the SARS-CoV-2 coronavirus in the environment?

The Impact of Selected Pretreatment Procedures on Iron Dissolution from Metallic Iron Specimens Used in Water Treatment

Role of Nanomaterials in the Treatment of Wastewater: A Review

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