Micropollutant Removal Potential by Aged Powdered Activated Carbon

Stoquart, Céline; Rodríguez, Gabriela A. Vázquez; Servais, Pierre; Sauvé, Sébastien; Barbeau, Benoît

doi:10.1061/(asce)ee.1943-7870.0001125

Cited by 7 publications

(6 citation statements)

References 40 publications

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“…The results obtained confirm the efficacy of atrazine reduction through treatment with PAC, both on a large scale and in a laboratory (Margot et al, 2013;Stoquart et al, 2016). Wen et al (2016) studied the inhibition effect of microorganisms if a spillage of 20 mg L -1 of atrazine occurred in the water that feeds a WWTP with an anoxic/oxic system.…”

Section: Atrazine Adsorption With Pacsupporting

confidence: 69%

Efficacy of atrazine pesticide reduction in aqueous solution using activated carbon, ozone and a combination of both

Esquerdo

Sentana-Gadea

Galvañ

et al. 2021

Science of The Total Environment

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Section: Atrazine Adsorption With Pacsupporting

confidence: 69%

Efficacy of atrazine pesticide reduction in aqueous solution using activated carbon, ozone and a combination of both

Esquerdo

Sentana-Gadea

Galvañ

et al. 2021

Science of The Total Environment

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“…Boehler et al and Kovalova et al obtained similar reductions with carbon doses of 15 mg L −1 and 23 mg L −1 , respectively [ 97 , 98 ]. On the other hand, Stoquart et al found that with an initial concentration of DCF 0.2 μg L −1 and a carbon dose of 1 g L −1 , they obtained a reduction of 95% in less than 5 min [ 103 ]. Apopei et al used an initial DCF concentration of 20 mg L −1 and a PAC dose of 1 g L −1 , obtained a reduction of over 90% in the first minute and after 20 min the reduction reached was 99% [ 104 ].…”

Section: Resultsmentioning

confidence: 99%

Carbamazepine and Diclofenac Removal Double Treatment: Oxidation and Adsorption

Esquerdo

Varó

Gadea

et al. 2021

IJERPH

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In the present research, the effect of two hybrid treatments, ozone followed by powdered activated carbon (PAC) or PAC followed by ozone (O3), was studied for the removal of two drugs present in water: diclofenac and carbamazepine. In the study, two initial concentrations of each of the contaminants, 0.7 mg L−1 and 1.8 mg L−1, were used. Different doses of PAC between 4–20 mg L−1 were studied as variables, as well as different doses of O3 between 0.056–0.280 mg L−1. The evolution of the concentration of each contaminant over time was evaluated. From the results obtained, it was concluded that the combined treatment with ozone followed by PAC reduces between 50% and 75% the time required to achieve 90% removal of diclofenac when compared with the time required when only activated carbon was used. In the case of carbamazepine, the time required was 97% less. For carbamazepine, to achieve reduction percentages of up to 90%, O3 treatment followed by PAC acted faster than PAC followed by O3. In the case of diclofenac, PAC treatment followed by O3 was faster to reach concentrations of up to 90%. However, to reach yields below 80%, O3 treatment followed by PAC was more efficient.

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“…The effectiveness of AC for the removal of MCs varies depending on the origin of the carbon, contact time, and the initial concentration of the MCs, although effective removal of MCs generally requires a high dosage of AC, sometimes ranging from 20 to 30 mg/L [31,56,119,161]. Nevertheless, the effectiveness of AC can be affected by the properties of the water, i.e., natural organic matter content, pH, the presence of anions, and temperature [78,84,162,163]. Depending on the structural properties of AC and its interaction with the target MC molecule, its performance can sometimes be limited.…”

Section: Real World Application Of Adsorption For the Removal Of Mcs:...mentioning

confidence: 99%

Adsorbents Used for Microcystin Removal from Water Sources: Current Knowledge and Future Prospects

et al. 2022

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The increasing occurrence of toxic cyanobacteria in water sources, driven by climate change and eutrophication, is of great concern worldwide today. Cyanobacterial blooms can negatively affect water bodies and generate harmful secondary metabolites, namely microcystins (MCs), which significantly impair water quality. Various adsorbents used for MC removal from water sources were assessed in this investigation. Activated carbon constitutes the most widely used adsorbent for treating contaminated waters due to its high affinity for adsorbing MCs. Alternative adsorbents have also been proposed and reported to provide higher efficiency, but the studies carried out so far in this regard are still insufficient. The mechanisms implicated in MC adsorption upon different adsorbents should be further detailed for a better optimization of the adsorption process. Certainly, adsorbent characteristics, water pH and temperature are the main factors influencing the adsorption of MCs. In this context, optimization studies must be performed considering the effectiveness, economic aspects associated with each adsorbent. This review provides guidelines for more practical field applications of the adsorption in the treatment of waters actually contaminated with MCs.

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Micropollutant Removal Potential by Aged Powdered Activated Carbon

Cited by 7 publications

References 40 publications

Efficacy of atrazine pesticide reduction in aqueous solution using activated carbon, ozone and a combination of both

Efficacy of atrazine pesticide reduction in aqueous solution using activated carbon, ozone and a combination of both

Carbamazepine and Diclofenac Removal Double Treatment: Oxidation and Adsorption

Adsorbents Used for Microcystin Removal from Water Sources: Current Knowledge and Future Prospects

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