Behavior of UV Filters, UV Blockers and Pharmaceuticals in High Rate Algal Ponds Treating Urban Wastewater

Vassalle, Lucas; Sunyer-Caldú, Adrià; Díaz-Cruz, M. Silvia; Arashiro, Larissa T.; Ferrer, Ivet; Garfí, Marianna; García-Galán, María Jesús

doi:10.3390/w12102658

Cited by 16 publications

(8 citation statements)

References 77 publications

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“…Regarding the high-rate algal pond (HRAP) technique, it can be inferred that the three studies that employed this technique, using a quasi-experimental design, obtained low removal rates for all pharmaceuticals except for ACE (removal between 94.4 and 100%) [ 36 , 45 , 46 ]—results that were consistent with the findings of Vassalle et al (2020) who, in their quasi-experimental study, concluded that HRAP was a natural treatment technique with low cost, which was viable for small populations and presented highly variable removal efficiencies [ 74 ].…”

Section: Resultssupporting

confidence: 69%

Literature Review: Evaluation of Drug Removal Techniques in Municipal and Hospital Wastewater

Rodríguez-Serin

Gamez-Jara

Cruz-Noriega

et al. 2022

IJERPH

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There are several techniques for the removal of pharmaceuticals (drugs) from wastewater; however, strengths and weaknesses have been observed in their elimination processes that limit their applicability. Therefore, we aimed to evaluate the best techniques for the removal of pharmaceuticals from municipal and hospital wastewater. For this, a non-experimental, descriptive, qualitative–quantitative design was used, corresponding to a systematic review without meta-analysis. Based on established inclusion and exclusion criteria, 31 open-access articles were selected from the Scopus, ProQuest, EBSCOhost, and ScienceDirect databases. The results showed that high concentrations of analgesics such as naproxen (1.37 mg/L) and antibiotics such as norfloxacin (0.561 mg/L) are frequently found in wastewater and that techniques such as reverse osmosis, ozonation, and activated sludge have the best removal efficiency, achieving values of 99%. It was concluded that reverse osmosis is one of the most efficient techniques for eliminating ofloxacin, sulfamethoxazole, carbamazepine, and diclofenac from municipal wastewater, with removal rates ranging from 96 to 99.9%, while for hospital wastewater the activated sludge technique proved to be efficient, eliminating analgesics and antibiotics in the range of 41–99%.

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Section: Resultssupporting

confidence: 69%

Literature Review: Evaluation of Drug Removal Techniques in Municipal and Hospital Wastewater

Rodríguez-Serin

Gamez-Jara

Cruz-Noriega

et al. 2022

IJERPH

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“…The stability of TMP in the abiotic and biotic batches can be explained by the high pK a values of this substance and its low K ow , which would prevent biomass adsorption, favouring the dissolution of this compound in the aqueous phase (Vassalle et al 2020 ).…”

Section: Resultsmentioning

confidence: 99%

Removal efficiencies of seven frequently detected antibiotics and related physiological responses in three microalgae species

Frascaroli,

Roberts,

Hunter

et al. 2024

Environ Sci Pollut Res

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The main objective of this study is to investigate the effect of mixtures of seven widely used human antibiotics (ciprofloxacin, clarithromycin, erythromycin, metronidazole, ofloxacin, sulfamethoxazole, and trimethoprim) on the growth, pH, pigment production, and antibiotics removal of three microalgal species (Auxenochlorella protothecoides, Tetradesmus obliquus, and Chlamydomonas acidophila). Batch assays were conducted with media with antibiotic mixtures at 10, 50, and 100 μg L−1 for each antibiotic. The three microalgae species effectively removed the antibiotics without any growth inhibition, even when exposed to the highest antibiotic concentrations. Biosorption was reported as the primary mechanism for ciprofloxacin, clarithromycin, metronidazole, and ofloxacin, with up to 70% removal, especially in A. protothecoides and C. acidophila. A. protothecoides, a species never investigated for antibiotic removal, was the only microalgae exhibiting bioaccumulation and biodegradation of specific antibiotics, including sulfamethoxazole. Furthermore, in media with the highest antibiotic concentration, all three species exhibited increased chlorophyll (up to 37%) and carotenoid (up to 32%) production, accompanied by a pH decrease of 3 units. Generally, in the present study, it has been observed that physiological responses and the removal of antibiotics by microalgae are interlinked and contingent on the antibiotic levels and types.

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Section: Antibiotics Removalmentioning

confidence: 99%

“…The relationship between CLA concentration in the media and the decrease in pH suggests that this pH drop might be the cause of CLA desorption from the biomass into the media, probably due to the changing of the protonation state of the molecule. Vassalle et al (2020) previously described how the WW pH might contribute to the removal of pharmaceuticals by changing the protonation of their functional groups. The pKa of CLA is 8.99, which indicates that this compound exists in the cation form at pH values of 5 to 9 (McFarland et al, 1997).…”

Section: Biosorptionmentioning

confidence: 99%

Physiological responses and removal pathways of Auxenochlorella protothecoides, Tetradesmus obliquus and Chlamydomonas acidophila to antibiotics commonly found in wastewater

Frascaroli

Roberts

Hunter

et al. 2023

Preprint

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The main objective of this study is to investigate the effect of mixtures of seven widely used human antibiotics (ciprofloxacin, clarithromycin, erythromycin, metronidazole, ofloxacin, sulfamethoxazole and trimethoprim) on the growth, pH, pigment production and antibiotics removal of three microalgal species (Auxenochlorella protothecoides, Tetradesmus obliquus, and Chlamydomonas acidophila). Batch assays were carried out containing media with mixtures of pharmaceuticals at three concentrations: 10, 50 and 100 µg L-1. A decrease in the pH and increased production of chlorophylls and carotenoids, up to 40% for A. protothecoides, were observed in the media with the highest concentration of antibiotics. However, no inhibition has been observed in the growth of the three species. The antibiotics were primarily removed through biosorption by the microalgae biomass, ranging between 21 and 70%. Bioaccumulation and biodegradation were only observed for A. protothecoides – a species never investigated before for the removal of antibiotics – presumably due to a rise in the heterotrophic activity selectively triggered by the concentrations of antibiotics. In the present study, it has been observed that physiological responses and the removal of antibiotics by microalgae are interlinked and depend on the levels and types of exogenous compounds.

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Behavior of UV Filters, UV Blockers and Pharmaceuticals in High Rate Algal Ponds Treating Urban Wastewater

Cited by 16 publications

References 77 publications

Literature Review: Evaluation of Drug Removal Techniques in Municipal and Hospital Wastewater

Literature Review: Evaluation of Drug Removal Techniques in Municipal and Hospital Wastewater

Removal efficiencies of seven frequently detected antibiotics and related physiological responses in three microalgae species

Physiological responses and removal pathways of Auxenochlorella protothecoides, Tetradesmus obliquus and Chlamydomonas acidophila to antibiotics commonly found in wastewater

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