Microbial fuel cells and constructed wetlands as a sustainable alternative for the treatment of hospital laundry wastewaters: Assessment of load parameters and genotoxicity

Lütterbeck, Carlos Alexandre; Colares, Gustavo Stolzenberg; Oliveira, Gislayne Alves; Mohr, Geani; Beckenkamp, Fábia; Rieger, Alexandre; Lobo, Eduardo A.; Rodrigues, Lúcia Ribeiro; Machado, Ênio Leandro

doi:10.1016/j.jece.2022.108105

Cited by 13 publications

(2 citation statements)

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“…Ecotoxicity testing proved to be essential in (bio)monitoring studies to take decisions about contaminated sites and remediation possibilities to assess technological efficiency and to characterize the health of the terrestrial and aquatic environments after remediation (Gruiz et al, 2016). However, toxicity characterization is often carried out in the case of microbial fuel cells (Hu et al, 2019; Joksimović et al, 2022; Lutterbeck et al, 2020, 2022), which are devices that use bacteria as catalysts to oxidize organic matter and generate current (Logan et al, 2006). In the case of microbial electrochemical remediation systems, in particular those applied to nitrate and arsenite removal (Guo et al, 2021), such ecotoxicological test batteries have been scarcely used besides chemical analysis and microbiological studies (Alka et al, 2021; Li et al, 2020; Pun et al, 2019; Zhang et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…However, toxicity characterization is often carried out in the case of microbial fuel cells (Hu et al, 2019;Joksimović et al, 2022;Lutterbeck et al, 2020Lutterbeck et al, , 2022, which are devices that use bacteria as catalysts to oxidize organic matter and generate current (Logan et al, 2006). In the case of microbial electrochemical remediation systems, in particular those applied to nitrate and arsenite removal (Guo et al, 2021), such ecotoxicological test batteries have been scarcely used besides chemical analysis and microbiological studies (Alka et al, 2021;Li et al, 2020;Pun et al, 2019;Zhang et al, 2019).…”

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confidence: 99%

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Ecotoxicity characterization assisted performance assessment of electro‐bioremediation reactors for nitrate and arsenite elimination

Fekete‐Kertész,

Pous,

Feigl

et al. 2023

Biotech & Bioengineering

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The performance of combined reduction of nitrate (NO3−) to dinitrogen gas (N2) and oxidation of arsenite (As[III]) to arsenate (As[V]) by a bioelectrochemical system was assessed, supported by ecotoxicity characterization. For the comprehensive toxicity characterization of the untreated model groundwater and the treated reactor effluents, a problem‐specific ecotoxicity test battery was established. The performance of the applied technology in terms of toxicity and target pollutant elimination was compared and analyzed. The highest toxicity attenuation was achieved under continuous flow mode with hydraulic retention time (HRT) = 7.5 h, with 95%, nitrate removal rate and complete oxidation of arsenite to arsenate. Daphnia magna proved to be the most sensitive test organism. The results of the D. magna lethality test supported the choice of the ideal operational conditions based on chemical data analysis. The outcomes of the study demonstrated that the applied technology was able to improve the groundwater quality in terms of both chemical and ecotoxicological characteristics. The importance of ecotoxicity evaluation was also highlighted, given that significant target contaminant elimination did not necessarily lower the environmental impact of the initial, untreated medium, in addition, anomalies might occur during the technology operational process which in some instances, could result in elevated toxicity levels.

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