Binding of waterborne pharmaceutical and personal care products to natural dissolved organic matter
TL;DR: The results suggest the binding was driven by i) the presence of carboxylic groups of PPCPs, ii) high pH shifting the structural configuration of DOM, making it more suited to bind some of the P PCPs.
About: This article is published in Science of The Total Environment.The article was published on 2021-08-25 and is currently open access. It has received 10 citations till now. The article focuses on the topics: Environmental impact of pharmaceuticals and personal care products.
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TL;DR: It is demonstrated that key water chemistry parameters do have interaction effects on the DGT measurements, which should be considered for the data interpretation and improve environmental risk assessments in the environment and modelling.
14 citations
TL;DR: In this article , the state-of-the-art knowledge of DOM−VA interactions and their resulting effects on the sorption−desorption and leaching of VAs in farmland soil was reviewed.
Abstract: The application of manure as a fertiliser to farmland is regarded as a major source of veterinary antibiotic (VA) contamination in the environment. The frequent detection of such emerging contaminants and their potential adverse impacts on the ecosystem and human health have provoked increasing concern for VA transport and fate. Extrinsic dissolved organic matter (DOM) may be introduced into farmland soil along with Vas, and thus exert significant effects on the transport of VAs via hydrological processes upon rainfall. The leaching of VAs can be either enhanced or reduced by DOM, depending on the nature, mobility, and interactions of VAs with DOM of different origins. From the aspect of the diversity and reactivity of DOM, the state-of-the-art knowledge of DOM−VA interactions and their resulting effects on the sorption−desorption and leaching of VAs in farmland soil was reviewed. Spectroscopic techniques for examining the extent of binding and reactive components of DOM with VAs are summarized and their usefulness is highlighted. Models for simulating VA transport under the effects of DOM were also reviewed. It is suggested that distinct impacts of DOM of various organic fertiliser/amendment origins should be considered for predicting the transport of VAs in farmland soil.
12 citations
TL;DR: In this article, the performance of the method to determine the binding of a commonly used moderately hydrophobic herbicide (Isoproturon - ISU) with natural dissolved organic matter (DOM) was evaluated through a set of quality assurance criteria, across a range of DOM concentrations and pH conditions.
7 citations
TL;DR: In this paper , sixteen contaminants of emerging concern (CECs), present in the effluent of the wastewater treatment plant (WWTP) “Salitre” (Bogotá- Colombia), were subjected to several electrochemical advanced oxidation processes (EAOPs).
Abstract: In this study, sixteen contaminants of emerging concern (CECs), present in the effluent of the wastewater treatment plant (WWTP) “Salitre” (Bogotá – Colombia), were subjected to several electrochemical advanced oxidation processes (EAOPs). Thus, the elimination of the pharmaceuticals diclofenac, carbamazepine, venlafaxine, Irbesartan, losartan, metronidazole, sulfamethoxazole, trimethoprim, clindamycin, norfloxacin, ciprofloxacin, clarithromycin, erythromycin, and azithromycin, the illicit drug cocaine, and its major metabolite benzoylecgonine was assessed by electro-Fenton (EF), photo-electro-Fenton (PEF), and photo-electro-Fenton in the presence of added oxalic acid (PEFox). A boron-doped diamond and a gas diffusion electrode were used as anode and cathode. After 1 h of treatment, the total concentration of CECs decreased by 36% when PEFox was applied. In the case of EF and PEF, the degradation percentages were lower (29% and 19%, respectively). The highest degradation by using PEFox was due to the enhanced availability of soluble iron ions by forming Fe(III)-oxalate complexes at near-neutral pH values. This allows the Fenton reaction to yield additional HO• radicals. Finally, the effect of EAOPs to reduce the environmental risk associated with the CECs in the WWTP was evaluated. The best system, PEFox, lowered by more than ten times the environmental hazard of the tested CECs in the effluent. This work shows the high potential of PEFox, as tertiary treatment, to eliminate emerging pollutants and reduce their risk in effluents from WWTP. In this system, the added oxalic acid, which has a biodegradable character, could be eliminated in a subsequent biological step. • The Photo-electro-Fenton process led to high removal of emerging pollutants present in the wastewater of Bogotá–Colombia. • UV light action increased the concentration of some pollutants. • Presence of oxalic acid considerably enhanced the degradation efficiency. • Photo-electro-Fenton with oxalic acid lowered by more than ten times the environmental hazard of the tested pollutants.
4 citations
01 Jan 2022
TL;DR: In this article , the detection of micropollutants, such as pharmaceuticals and industrial chemicals with endocrine disrupting potency, in ground and surface waters is of emerging concern.
Abstract: Detection of micropollutants, such as pharmaceuticals and industrial chemicals with endocrine disrupting potency, in ground and surface waters is of emerging concern. Within the aquatic environment, these emerging contaminants (ECs)...
1 citations
References
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Journal Article•
TL;DR: Copyright (©) 1999–2012 R Foundation for Statistical Computing; permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and permission notice are preserved on all copies.
Abstract: Copyright (©) 1999–2012 R Foundation for Statistical Computing. Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Permission is granted to copy and distribute translations of this manual into another language, under the above conditions for modified versions, except that this permission notice may be stated in a translation approved by the R Core Team.
272,030 citations
Book•
01 Jan 1983
TL;DR: The Merck Index as discussed by the authors is a one-volume encyclopedia of chemicals, drugs and biologicals that contains more than 10,000 monographs, each monograph is a concise description of a single substance or a small group of closely related compounds.
Abstract: The Merck Index is a one-volume encyclopedia of chemicals, drugs and biologicals that contains more than 10,000 monographs. Each monograph in this authoritative reference source is a concise description of a single substance or a small group of closely related compounds. Compounds included: * human and veterinary drugs * biotech drugs and monoclonal antibodies * substances used for medical imaging * biologicals and natural products * plants and traditional medicines * nutraceuticals and cosmeceuticals * agriculturals, pesticides and herbicides * Organic chemicals used in research * Food additives and supplements * dyes, colors and indicators * environmentally significant substances Information provided: * chemical, common and generic names * Over 15,000 trademarks and associated companies * CAS Registry Numbers for over 12,000 compounds * Over 8,500 chemical structures * molecular formulae, weights and percentage composition * capsule statements identifying compound classes and scientific significance * scientific and patent literature references * physical and toxicity data * therapeutic and commercial uses * caution and hazard information In addition, there are more than 700 new and completely revised monographs, thousands of new references, trademarks and uses added to existing monographs. Now includes a companion CD-ROM which features 989 monographs no longer available in print, organic name reactions, supplemental tables and a new user interface for user-friendly searching. Features of the CD: * Searchable by keywords, references, and numerical properties * Search the complete contents of the 14th edition, plus nearly a thousand monographs archived from previous editions * Comes with a free one-year subscription to the Merck Index Internet Edition * Windows-compatible CD powered by CambridgeSoft's ChemFinder * Extensively revised supplemental tables now including acronyms, vaccines, and physical constants * More than 70 pages of hard to find information in one easy-to-use place
4,478 citations
TL;DR: There are three scientific challenges in addressing water-quality problems caused by micropollutants, and usage and disposal strategies should aim to minimize introduction of critical pollutants into the aquatic environment.
Abstract: The increasing worldwide contamination of freshwater systems with thousands of industrial and natural chemical compounds is one of the key environmental problems facing humanity. Although most of these compounds are present at low concentrations, many of them raise considerable toxicological concerns, particularly when present as components of complex mixtures. Here we review three scientific challenges in addressing water-quality problems caused by such micropollutants. First, tools to assess the impact of these pollutants on aquatic life and human health must be further developed and refined. Second, cost-effective and appropriate remediation and water-treatment technologies must be explored and implemented. Third, usage and disposal strategies, coupled with the search for environmentally more benign products and processes, should aim to minimize introduction of critical pollutants into the aquatic environment.
2,951 citations
TL;DR: It is shown that rising trends in DOC between 1990 and 2004 can be concisely explained by a simple model based solely on changes in deposition chemistry and catchment acid-sensitivity, and that the rise in DOC is integral to recovery from acidification.
Abstract: Several hypotheses have been proposed to explain recent, widespread increases in concentrations of dissolved organic carbon (DOC) in the surface waters of glaciated landscapes across eastern North America and northern and central Europe. Some invoke anthropogenic forcing through mechanisms related to climate change, nitrogen deposition or changes in land use, and by implication suggest that current concentrations and fluxes are without precedent. All of these hypotheses imply that DOC levels will continue to rise, with unpredictable consequences for the global carbon cycle. Alternatively, it has been proposed that DOC concentrations are returning toward pre-industrial levels as a result of a gradual decline in the sulphate content of atmospheric deposition. Here we show, through the assessment of time series data from 522 remote lakes and streams in North America and northern Europe, that rising trends in DOC between 1990 and 2004 can be concisely explained by a simple model based solely on changes in deposition chemistry and catchment acid-sensitivity. We demonstrate that DOC concentrations have increased in proportion to the rates at which atmospherically deposited anthropogenic sulphur and sea salt have declined. We conclude that acid deposition to these ecosystems has been partially buffered by changes in organic acidity and that the rise in DOC is integral to recovery from acidification. Over recent decades, deposition-driven increases in organic matter solubility may have increased the export of DOC to the oceans, a potentially important component of regional carbon balances. The increase in DOC concentrations in these regions appears unrelated to other climatic factors.
1,622 citations
TL;DR: This exercise prioritized the most critical questions regarding the effects of PPCPs on human and ecological health in order to ensure that future resources will be focused on the most important areas.
Abstract: Background: Over the past 10–15 years, a substantial amount of work has been done by the scientific, regulatory, and business communities to elucidate the effects and risks of pharmaceuticals and p...
1,058 citations