Removal of emerging contaminants from the environment by adsorption

Sophia, A. Carmalin; Lima, Éder C.

doi:10.1016/j.ecoenv.2017.12.026

Cited by 692 publications

(172 citation statements)

References 197 publications

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“…Physical removal of CECs can be achieved by sorption to activated carbon or separation using nanofiltration or reverse osmosis membranes. [39][40][41][42][43] Forty-three of 303 DWTPs in Texas with DFR >0 use activated carbon (both in granular and powder one) and only nine of those DWTPs impacted by DFR use granular activated carbon (GAC). GAC is often used at DWTPs to control algal-related taste and odors, DBP precursors, and more recently CECs.…”

Section: Proximity Distribution Of Wwtps Upstream To Dwtps Within Thementioning

confidence: 99%

Drinking water vulnerability in less-populated communities in Texas to wastewater-derived contaminants

Nguyễn

Westerhoff

2019

npj Clean Water

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De facto potable reuse occurs when treated wastewater is discharged upstream of drinking water treatment plants (DWTPs) and can lead to contaminants of emerging concern (CECs) occurring in potable water. Our prior research, focusing on larger communities that each serve >10,000 people across the USA, indicates that elevated de facto reuse (DFR) occurs in Texas, and thus we added to our model DWTPs serving smaller communities to understand their vulnerability to CECs. Here, we show that twothirds of all surface water intakes in Texas were impacted by DFR at levels exceeding 90% during even mild droughts, and under average streamflow DFR levels range between 1 and 20%. DWTPs serving lower population communities (<10,000 people) have higher DFR levels, and fewer than 2% of these communities have advanced technologies (e.g., ozone, activated carbon) at DWTPs to remove CECs. Efforts to improve water quality in these less populated communities are an important priority. The model approach and results can be used to identify prioritization for monitoring and treatment of CECs, including in underserved communities, which normally lack knowledge of their impacts from DFR occurring within their watersheds.npj Clean Water (2019) 2:19 ; https://doi.

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Section: Proximity Distribution Of Wwtps Upstream To Dwtps Within Thementioning

confidence: 99%

Drinking water vulnerability in less-populated communities in Texas to wastewater-derived contaminants

Nguyễn

Westerhoff

2019

npj Clean Water

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“…These compounds frequently present aromatic rings in their structure, hence they have the property to degrade and deliver carcinogenic and mutagenic products in water bodies and the atmosphere Carvallho et al, 2016). Furthermore, the bioaccumulation of products such as pharmaceuticals, pesticides, plasticizers, hormones and their by-products in water bodies may also generates microbial drug resistance (Sophia and Lima, 2018;Andersson and Hughes, 2012;Merlin et al, 2011). Modified graphene has also been tested as gatekeepers for several chiral molecules, many of them with bioactive and toxic properties (Hauser et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Functionalized Graphene-Based Materials as Innovative Adsorbents of Organic Pollutants: A Concise Overview

Fraga

Carvalho

Ghislandi

et al. 2019

Braz. J. Chem. Eng.

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The functionalization of graphene nanosheets is the cutting edge of materials sciences nowadays. Such research promotes the development of innovative, low cost and highly capable sorbents. This review article aims to assemble the available information on functionalized graphene used for the adsorption of organic pollutants and establishes a critical comparison between the data reported in the literature. Various optimal experimental conditions (pH, temperature, contact time, adsorbent dosage) and adsorbent characterization methods (FTIR, Raman, XPS spectra, XRD, TEM and AFM) have been listed to enlighten adsorption mechanisms, capacity and limiting aspects. Moreover, adsorption isotherms, kinetics and thermodynamic data of different functionalized graphene-based materials towards a wide range of organic pollutants were analyzed and tabulated. In each evaluation topic, environmental and human health protection is subject for discussion, as well as the scientific breakthrough works available in high impact journals in the field.

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“…So far, the development of various adsorbents has been successful because of functional carbon materials (graphene [16] or porous carbon [17]), mesoporous materials [18] and MOFs [19][20][21][22]. For example, MOFs [23][24][25], carbonaceous materials (such as carbon nanotubes, graphene, biochar and activated carbon) [26] and clay [27] have been applied in adsorptive removal of contaminants of emerging concern, hazardous organics and persistent organic pollutants. Carbonaceous materials have been particularly attractive in the purification of contaminated water via adsorption because of the easy preparation of carbon materials [26], especially from waste materials [28].…”

Section: Introductionmentioning

confidence: 99%

“…For example, MOFs [23][24][25], carbonaceous materials (such as carbon nanotubes, graphene, biochar and activated carbon) [26] and clay [27] have been applied in adsorptive removal of contaminants of emerging concern, hazardous organics and persistent organic pollutants. Carbonaceous materials have been particularly attractive in the purification of contaminated water via adsorption because of the easy preparation of carbon materials [26], especially from waste materials [28]. Moreover, highly porous carbon materials, especially with high nitrogen content, have been produced from various precursors including organic polymers [29][30][31][32][33] and MOFs [34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Adsorptive removal of bulky dye molecules from water with mesoporous polyaniline-derived carbon

Park

Khan

et al. 2020

Beilstein J. Nanotechnol.

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Polyaniline-derived carbon (PDC) was obtained via pyrolysis of polyaniline under different temperatures and applied for the purification of water contaminated with dye molecules of different sizes and charge by adsorption. With increasing pyrolysis temperature, it was found that the hydrophobicity, pore size and mesopore volume increased. A mesoporous PDC sample obtained via pyrolysis at 900 °C showed remarkable performance in the adsorption of dye molecules, irrespective of dye charge, especially in the removal of bulky dye molecules, such as acid red 1 (AR1) and Janus green B (JGB). For example, the most competitive PDC material showed a Q 0 value (maximum adsorption capacity) 8.1 times that of commercial, activated carbon for AR1. The remarkable adsorption of AR1 and JGB over KOH-900 could be explained by the combined mechanisms of hydrophobic, π-π, electrostatic and van der Waals interactions. 597

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Removal of emerging contaminants from the environment by adsorption

Cited by 692 publications

References 197 publications

Drinking water vulnerability in less-populated communities in Texas to wastewater-derived contaminants

Drinking water vulnerability in less-populated communities in Texas to wastewater-derived contaminants

Functionalized Graphene-Based Materials as Innovative Adsorbents of Organic Pollutants: A Concise Overview

Adsorptive removal of bulky dye molecules from water with mesoporous polyaniline-derived carbon

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