Detection, occurrence, and fate of emerging contaminants in agricultural environments (2020)

Snow, Daniel D.; Cassada, David A.; Biswas, Saptashati; Malakar, Arindam; D’Alessio, Matteo; Marshall, Alice H. L.; Sallach, J. Brett

doi:10.1002/wer.1429

Cited by 13 publications

(4 citation statements)

References 79 publications

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“…Water shortage and the fitful terrestrial distribution of rainfall are disturbing concerns in arid and semiarid areas, where water management strategies promote the reuse of WW effluents for agricultural purposes because of climate change. Some papers have recently reviewed the occurrence and fate of a large number and variety of CECs likely to occur in agroecosystems (Boxall, 2012;Snow et al, 2020). Thus, PhMCs can enter in the agricultural environment directly (via therapeutic use in livestock and fisheries), as well as indirectly, through the cumulative use of reclaimed WW and the application of municipal biosolids and manure.…”

Section: Introductionmentioning

confidence: 99%

Removal of Contaminants of Emerging Concern from a Wastewater Effluent by Solar-Driven Heterogeneous Photocatalysis: A Case Study of Pharmaceuticals

Gabriel

Aatik

Aliste

et al. 2023

Water Air Soil Pollut

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The occurrence of emerging micropollutants (pharmaceuticals, pesticides, personal care products, industrial compounds, etc.) in the environment is considered a major threat to human health and aquatic ecosystems. These micropollutants enter the environment through anthropogenic actions and have been identified in surface, ground, waste, and even in drinking water, in quantities ranging from ng L−1 to µg L−1. Currently, the pollution of the global water cycle with persistent organic pollutants remains one of the major challenges of the twenty-first century. Most of these organic substances are only partially removed by conventional wastewater treatment plants. Particularly, considerable amounts of pharmaceuticals are used in human and veterinary medicine, which are not efficiently removed during conventional wastewater treatments and subsequently continuously enter freshwater systems and even agricultural crops. Accordingly, we have evaluated the effectivity of TiO2 as a photocatalyst in tandem with Na2S2O8 as an oxidant for the treatment of a wastewater effluent polluted with pharmaceutical (atenolol, carbamazepine, clarithromycin, erythromycin, irbesartan, and ketoprofen) residues. Results show that the use of solar heterogeneous photocatalysis by means of band-gap semiconductor materials, especially TiO2 in combination with a strong oxidant such as Na2S2O8, significantly enhances their disappearance from the wastewater effluent. However, the selected pharmaceuticals show a slow degradation in wastewater effluent compared to pure water indicating that the occurrence of dissolved salts and organic carbon in wastewater effluent noticeably slows down the efficiency of the treatment. A single first-order model satisfactorily explains the photocatalytic degradation of the compounds studied for both, pure and wastewater. In the case of wastewater effluent, the highest DT50 values were observed for macrolides (13 and 16 min for erythromycin and clarithromycin, respectively), while the other compounds studied showed DT50 values below 10 min. This methodology has a notorious interest in some areas of the Mediterranean basin with water shortage, such as SE of Spain, where more than 3000 h of sunlight per year are recovered.

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Section: Introductionmentioning

confidence: 99%

Removal of Contaminants of Emerging Concern from a Wastewater Effluent by Solar-Driven Heterogeneous Photocatalysis: A Case Study of Pharmaceuticals

Gabriel

Aatik

Aliste

et al. 2023

Water Air Soil Pollut

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“…Environmental contaminants in water have been studied for decades, initially focusing on legacy contaminants such as heavy metals and persistent organic pollutants. More recently, advances in analytical techniques have allowed for the determination of emerging contaminants (e.g., pharmaceuticals and personal care products [PCPs]) in the environment at low pg/L concentrations (Adeleye et al, 2021 ; Snow et al, 2020 ). Emerging contaminants are collectively referred to as newly synthesized and natural chemicals unintentionally released into the environment that have the potential to cause adverse ecological or human health impacts (Bellenger & Cabana, 2014 ; Sorensen et al, 2014 ).…”

Section: Introductionmentioning

confidence: 99%

Emerging contaminant exposure to aquatic systems in the Southern African Development Community

Selwe

Thorn

Desrousseaux

et al. 2022

Enviro Toxic and Chemistry

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The growing production and use of chemicals and the resultant increase in environmental exposure is of particular concern in developing countries where there is rapid industrialization and population growth but limited information on the occurrence of emerging contaminants. Advances in analytical techniques now allow for the monitoring of emerging contaminants at very low concentrations with the potential to cause harmful ecotoxicological effects. Therefore, we provide the first critical assessment of the current state of knowledge about chemical exposure in waters of the Southern African Developmental Community (SADC). We achieved this through a comprehensive literature review and the creation of a database of chemical monitoring data. Of the 59 articles reviewed, most (n = 36; 61.0%) were from South Africa, and the rest were from Botswana (n = 6; 10.2%), Zimbabwe (n = 6; 10.2%), Malawi (n = 3; 5.1%), Mozambique (n = 3; 5.1%), Zambia (n = 2; 3.4%), Angola (n = 1; 1.7%), Madagascar (n = 1; 1.7%), and Tanzania (n = 1; 1.7%). No publications were found from the remaining seven SADC countries. Emerging contaminants have only been studied in South Africa and Botswana. The antiretroviral drug ritonavir (64.52 µg/L) was detected at the highest average concentration, and ibuprofen (17 times) was detected most frequently. Despite being the primary water source in the region, groundwater was understudied (only 13 studies). High emerging contaminant concentrations in surface waters indicate the presence of secondary sources of pollution such as sewage leakage. We identify research gaps and propose actions to assess and reduce chemical pollution to enable the SADC to address the Sustainable Development Goals, particularly Goal 3.9, to reduce the deaths and illnesses from hazardous chemicals and contamination. Environ Toxicol Chem 2022;41:382–395. © 2022 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.

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“…Emerging contaminants (ECs) have long been an object of attention for the scientific community and, more recently, by planning and control organizations at both global and national levels, and new substances or classes of substances are being increasingly identified and added to the lists of ECs [ 1 , 2 , 3 , 4 , 5 , 6 ]. ECs are chemical compounds that are found in very low concentrations (in the order of nanograms/L or a few micrograms/L at most or, more simply, as much as a sugar cube in a pond) in urban, agricultural and industrial waste and water bodies.…”

Section: Introductionmentioning

confidence: 99%

Secondary Effects of Hypochlorite Treatment on the Emerging Pollutant Candesartan: The Formation of Degradation Byproducts and Their Toxicological Profiles

et al. 2021

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In recent years, many studies have reported the frequent detection of antihypertensive agents such as sartans (olmesartan, valsartan, irbesartan and candesartan) in the influents and effluents of wastewater treatment plants (WWTPs) and in the superficial waters of rivers and lakes in both Europe and North America. In this paper, the degradation pathway for candesartan (CAN) was investigated by simulating the chlorination process that is normally used to reduce microbial contamination in a WWTP. Twelve isolated degradation byproducts (DPs), four of which were isolated for the first time, were separated on a C-18 column by employing a gradient HPLC method, and their structures were identified by combining nuclear magnetic resonance and mass spectrometry and comparing the results with commercial standards. On the basis of these results, a mechanism of formation starting from the parent drug is proposed. The ecotoxicity of CAN and its DPs was studied by conducting a battery of ecotoxicity tests; bioassays were performed using Aliivibrio fischeri (bacterium), Daphnia magna (planktonic crustacean) and Raphidocelis subcapitata (alga). The ecotoxicity results shed new light on the increased toxicity of DPs compared with the parent compound.

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Detection, occurrence, and fate of emerging contaminants in agricultural environments (2020)

Cited by 13 publications

References 79 publications

Removal of Contaminants of Emerging Concern from a Wastewater Effluent by Solar-Driven Heterogeneous Photocatalysis: A Case Study of Pharmaceuticals

Removal of Contaminants of Emerging Concern from a Wastewater Effluent by Solar-Driven Heterogeneous Photocatalysis: A Case Study of Pharmaceuticals

Emerging contaminant exposure to aquatic systems in the Southern African Development Community

Secondary Effects of Hypochlorite Treatment on the Emerging Pollutant Candesartan: The Formation of Degradation Byproducts and Their Toxicological Profiles

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