scholarly journals Daily Variation of Lipid Regulators and Personal Care Products in a River Impacted by Domestic Effluents in Southern Brazil

Water ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1393
Author(s):  
Franciane de Almeida Brehm Goulart ◽  
Gabriela Reichert ◽  
Tais Cristina Felippe ◽  
Alinne Mizukawa ◽  
Jhonatas Antonelli ◽  
...  

In urban areas, wastewater treatment plants (WWTPs) play a major role in the water quality of rivers. The removal efficiency of emerging contaminants by WWTPs is strongly correlated with the type of treatment and the hydraulic retention time (HRT) of the process, which can vary according to the volumetric influent flow of wastewater and occasional peak flows. This paper aims, for the first time, to assess the daily variation of lipid regulators and personal care products in an urban river impacted by domestic effluents. Samples were collected upstream and downstream of a WWTP. The concentrations downstream of the effluent discharge were higher than upstream, but they varied significantly during the day. Concentration peaks upstream of the WWTP were detected at 07:00, 15:00 and 21:00, while downstream of the effluent discharge, concentration peaks occurred between 13:00 and 19:00 and between 21:00 and 23:00. The highest downstream concentrations of triclosan and methylparaben (420 ng L−1 and 460 ng L−1) were 6.8 and 5.4 times higher than the lowest concentrations detected, respectively. These results show that in WWTP-impacted rivers, the time of the sampling has a great influence on the final results and conclusions of a monitoring study.

BMC Chemistry ◽  
2020 ◽  
Vol 14 (1) ◽  
Author(s):  
Adewumi Olufemi Oluwole ◽  
Elizabeth Oyinkansola Omotola ◽  
Olatunde Stephen Olatunji

Abstract The presence of emerging contaminants such as pharmaceutical and personal care products in many aqueous matrices have been reported. One of such matrix is streams of wastewater, including wastewater treatment plants inflows and outflows and wastewater flow by-passing wastewater treatment plants. Their persistence arises from their resistant to breakdown, hence they may remain in the environment over long time, with a potential to cause adverse effects including endocrine disruption, gene toxicity, the imposition of sex organs, antibiotic resistance and many others in some aquatic organisms exposed to arrays of residues of pharmaceutical and personal care products. Among the treatment techniques, advanced oxidation processes have been reported to be a better technique through which these PPCPs can be degraded in the WWTPs. Heterogeneous photocatalysis using various photocatalyst immobilized on solid support such as activated carbon, graphene and carbon nanotubes in AOPs have been shown to be a viable and efficient method of PPCPs degradation. This is because, the performance of most WWTPs is limited since they were not designed to degrade toxic and recalcitrant PPCPs. This review highlight the occurrence, concentration of PPCPs in wastewater and the removal efficiency of heterogeneous photocatalysis of TiO2 immobilized on solid supports.


2010 ◽  
Vol 62 (10) ◽  
pp. 2450-2458 ◽  
Author(s):  
Angela Yu-Chen Lin ◽  
Cheng-Fan Lin ◽  
Yu-Ting Tsai ◽  
Hank Hui-Hsiang Lin ◽  
Jie Chen ◽  
...  

Pharmaceuticals and personal care products (PPCPs) constitute a class of chemicals of emerging concern due to the potential risks they pose to organisms and the environment, even at low concentrations (ng/L). Recent studies have found that PPCPs are not efficiently removed in secondary wastewater treatment plants (WWTPs). This study has: (1) simultaneously investigated the occurrence of sixty-one PPCPs using solid phase extraction and high-performance liquid chromatography-tandem mass spectrometry, (2) evaluated removal efficiencies of target PPCPs in six WWTPs that discharge effluents into major Taiwanese rivers, and lastly (3) examined matrix interference during analysis of target PPCPs in water samples. The twenty target PPCPs were chosen for their high detection frequencies, high influent concentrations, and stability during wastewater treatment processes. Caffeine and acetaminophen were detected at the highest concentrations (as high as 24,467 and 33,400 ng/L) and were effectively removed (both >96%); other PPCPs were detected in the high ng/L range but were not effectively removed. Matrix interference (by ion suppression or enhancement) during the analysis resulted in underestimation of the removal efficiencies of erythromycin-H2O, cefazolin, clarithromycin, ibuprofen, diclofenac, clofibric acid and gemfibrozil.


Author(s):  
Alex Neumann

The increased use of Pharmaceuticals and Personal Care Products (PPCP’s) has led to an increase in many population health problems. In 1997, 15–50 % of women had developed breasts by the age of 8. Ten years prior to this, breast development by the age of 8 was uncommon. There are certain researchers who believe that this may be linked to the pharmaceuticals humans are consuming.Wastewater treatment plants are a significant gateway by which pharmaceuticals enter the water supply. Many pharmaceuticals find themselves in wastewater treatment plants, however the plants do not target these specific chemicals for treatment. As a result, they are released into the surrounding bodies of water, and accumulate in aquatic animals. When water treatment plants take water from the bodies of water and distribute it for human consumption, humans consume these chemicals.Many techniques for removing the pharmaceuticals have been tested, but there is still much uncertainty as to which are effective methods. The potential hazards associated with these chemicals are still uncertain, but the current evidence is indicating that it is very likely that these chemicals can be very hazardous.


2018 ◽  
Vol 37 (2) ◽  
Author(s):  
Omar J. Portillo-Castillo ◽  
Rocío Castro-Ríos ◽  
Abelardo Chávez-Montes ◽  
Azucena González-Horta ◽  
Norma Cavazos-Rocha ◽  
...  

Abstract Solid-phase microextraction (SPME) is a sample preparation technique with many applications that is being continuously developed. In this technique, the type of fiber coating plays a crucial role for extraction efficiency. Currently available commercial coatings have certain drawbacks that have been overcome by the development of new coatings based on novel materials; these have improved the efficiency of extraction, selectivity and stability of commercial coatings. Pharmaceutical and personal care products (PPCPs) are one of the most important groups of emerging contaminants; however, some studies suggest that these compounds can cause adverse health effects. No official monitoring protocols for these compounds are currently available, so the establishment of analytical methods that allow their determination in environmental samples is required. The complexity of environmental samples together with the low concentration levels of these compounds makes necessary the use of sample preparation techniques capable of removing interferences, as well as preconcentrated analytes, and SPME is a very promising alternative to achieve this. This review describes the recent developments in SPME with classical and novel coatings and its applications for PPCP determination in environmental samples.


Author(s):  
Julie A. Becker ◽  
Alexandros I. Stefanakis

With the advent of better detection, more micro-contaminants are being found in water. Many of these micro-contaminants come from medical therapies and personal care products. These chemicals are comprised of a wide-range of substances including pharmaceuticals, dietary supplements, veterinary drugs, fragrances, hair care products, body lotions, oral care, and cosmetics. Many of these products enhance our quality of life and in some cases, provide life-saving therapies. But, they come with an environmental cost. Scientific research has found sub-therapeutic levels of many of these chemicals in our waterways and in our finished drinking water, causing concern about the potential environmental and public health impacts associated with very low, chronic exposure. As tailored therapies and personal care products are developed, it is crucial to consider how to control emerging contaminants from medical therapies and personal care products. Specific actions and policies can be implemented now by adopting upstream approaches to prevent waste and decrease environmental exposures.


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