Emerging environmental contaminants: A global perspective on policies and regulations

Puri, Mehak; Gandhi, Kavita; Kumar, M Suresh

doi:10.1016/j.jenvman.2023.117344

Cited by 100 publications

(30 citation statements)

References 62 publications

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“…4−7 The presence of EPCs in water poses a significant challenge to maintaining safe access to water, 8 a goal that is challenging in locations where state-of-the-art water treatment technologies are not readily available, including many parts of the developing world. 9,10 These contaminants also pose a risk to aquatic organisms through the various negative effects of toxicity as well as the disruption of endocrine systems. 11,12 High EPC prevalence and concentrations tend to align with areas where anthropogenic activities are concentrated such as densely populated urban centers and industrial areas.…”

Section: Introductionmentioning

confidence: 99%

Spatial and Temporal Patterns of Emerging and Persistent Contaminants in a Mixed-Use Catchment: A Case Study of the Upper Ping in Northern Thailand

Lee,

Ziegler,

Marques dos Santos

et al. 2024

ACS EST Water

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This study investigated the occurrence and concentration of emerging and persistent contaminants (EPC) within a variety of land uses in the Ping River catchment of northern Thailand. Urban sites exhibited the highest levels of contamination, followed by agriculture and rural sites. The high presence of pharmaceuticals, daily use compounds, and industrial-related compounds in urban areas indicates significant contributions of wastewater likely associated with drainage from areas with manufacturing, repair, and medical activities, as well as dense residential living. The ubiquitous occurrence of daily use compounds (caffeine and acesulfame) in all land-use types was an indicator of significant gray water pollution in the catchment. Seasonal variations in EPC occurrence were not significant, possibly due to constant mixing or flushing of EPCs within the large catchment through multiple flow pathways. The complexity of EPC occurrence in the mixed-use catchment was dependent on factors related to EPC usage and processes, both natural and anthropogenic, that affect EPC entry into the environment from a variety of sources and then flow to the river system and, potentially, the groundwater. The findings highlight the heterogeneity and dynamic nature of mixed-use anthropogenic landscapes and emphasize the need for further research on the influence of hydrological connectivity on the EPC presence and intensity in such settings.

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Section: Introductionmentioning

confidence: 99%

Spatial and Temporal Patterns of Emerging and Persistent Contaminants in a Mixed-Use Catchment: A Case Study of the Upper Ping in Northern Thailand

Lee,

Ziegler,

Marques dos Santos

et al. 2024

ACS EST Water

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“…A growing global demand for water is occurring at the same time as an alarming rate of environmental degradation and industrial waste discharge. – Due to their high toxicity and lack of biodegradability, heavy metal ions (HMIs) present in the environment cause enormous issues; hence, it is imperative that industrial manufacturing and processing activities remove them using inexpensive environmentally acceptable sorbents. ,– Mining activities generate aqueous effluents with high metal content, and if these water resources are to be reutilized, contaminants such as HMIs and anions must be removed, getting pH values near neutrality. , These activities generate two types of aqueous solutions: the first involves a hydrometallurgical process aimed at refining precious metal ores using cyanide and mercury, both of which are highly toxic, even at low concentrations. The second type is mining-influenced groundwater or surrounding surface water, which can be produced by the lixiviation of some components from active mining sites of abandoned or inactive mines .…”

Section: Introductionmentioning

confidence: 99%

Versatile Zwitterionic Beads for Heavy Metal Ion Removal from Aqueous Media and Soils by Sorption and Catalysis Processes

Zaharia,

Bucatariu,

Vasiliu

et al. 2023

ACS Appl. Polym. Mater.

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Cross-linked polymeric beads of divinylbenzene/ethyl acrylate/acrylonitrile copolymer, with zwitterionic functional groups obtained by aminolysis with ethylenediamine and carboxymethylation with sodium chloroacetate (IEx-Zw) were herein used in the heavy metal ions (HMIs) dynamic sorption studies, both as a single componentsimulated solution (Cu 2+ ) and in multicomponent polluted water (Cu 2+ , Fe 2+ , Mn 2+ , and Zn 2+ ) collected from tailings pond of Tarnita, Suceava, Romania. The experiments were performed in fluidized bed columns filled with IEx-Zw, for the column sorption of Cu 2+ from synthetic polluted waters being used to assess the best working conditions of the sorbent. The HMIs sorption experiments were supported by UV−Vis spectroscopy, atomic absorption spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and thermogravimetric analysis. The dual sorbent/catalyst function of the IEx-Zw was followed in the copper sorption experiments, with sorbed Cu 2+ being reduced to Cu 2 O, as found by X-ray diffraction analysis of the obtained precipitate. The multicomponent HMIs sorption kinetic data were described by Thomas and Yoon−Nelson models to gain a deeper understanding of the use of the zwitterionic beads in a continuous flow setup. Furthermore, the germination assays were used to investigate the toxicity of soil collected from the Tarnita sterile dump. Soil cleaning using the IEx-Zw resin was shown to be effective enough to increase the soils' capacity to support the germination process.

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“…There is currently no recognized process for selecting priority contaminants to be controlled by indoor air quality (IAQ) standards and regulations. − Accordingly, there is a need to identify contaminants that are both the most harmful and the most prevalent so that they are prioritized as Contaminants of Concern (CoCs) and targeted for removal. The CoC term aligns closely with Priority Contaminants or Criteria Pollutants , but is distinct from the term Contaminants of Emerging Concern (CECs) used in water-related research …”

Section: Introductionmentioning

confidence: 99%

“…The CoC term aligns closely with Priority Contaminants or Criteria Pollutants, but is distinct from the term Contaminants of Emerging Concern (CECs) used in water-related research. 32 Existing IAQ metrics rely on contaminant concentrations 1,33 but do not directly consider associated health risks. To address this, we introduce the concept of harm intensity (HI) with units of DALY/concentration/person/year, which links chronic harm (DALY/person/year) to the concentrations of airborne contaminants to which people are exposed to.…”

Section: Introductionmentioning

confidence: 99%

Harm from Residential Indoor Air Contaminants

Morantes,

Jones,

Molina

et al. 2023

Environ. Sci. Technol.

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This study presents a health-centered approach to quantify and compare the chronic harm caused by indoor air contaminants using disability-adjusted life-year (DALY). The aim is to understand the chronic harm caused by airborne contaminants in dwellings and identify the most harmful. Epidemiological and toxicological evidence of population morbidity and mortality is used to determine harm intensities, a metric of chronic harm per unit of contaminant concentration. Uncertainty is evaluated in the concentrations of 45 indoor air contaminants commonly found in dwellings. Chronic harm is estimated from the harm intensities and the concentrations. The most harmful contaminants in dwellings are PM 2.5 , PM 10−2.5 , NO 2 , formaldehyde, radon, and O 3 , accounting for over 99% of total median harm of 2200 DALYs/10 5 person/year. The chronic harm caused by all airborne contaminants in dwellings accounts for 7% of the total global burden from all diseases.

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Emerging environmental contaminants: A global perspective on policies and regulations

Cited by 100 publications

References 62 publications

Spatial and Temporal Patterns of Emerging and Persistent Contaminants in a Mixed-Use Catchment: A Case Study of the Upper Ping in Northern Thailand

Spatial and Temporal Patterns of Emerging and Persistent Contaminants in a Mixed-Use Catchment: A Case Study of the Upper Ping in Northern Thailand

Versatile Zwitterionic Beads for Heavy Metal Ion Removal from Aqueous Media and Soils by Sorption and Catalysis Processes

Harm from Residential Indoor Air Contaminants

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