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Oh S, Nguyen AH, Kim JS, Chung SY, Maeng SK, Jung YH, Cho K. A microbiome-biochar composite synergistically eliminates the environmental risks of antibiotic mixtures and their toxic byproducts. JOURNAL OF HAZARDOUS MATERIALS 2024; 478:135474. [PMID: 39173370 DOI: 10.1016/j.jhazmat.2024.135474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2024] [Revised: 07/15/2024] [Accepted: 08/08/2024] [Indexed: 08/24/2024]
Abstract
This study developed a continuous reactor system employing a hybrid hydrogel composite synthesized using a complex sludge microbiome and an adsorbent (HSA). This HSA-based system effectively eliminated the environmental risks associated with a mixture of the antibiotics ciprofloxacin and sulfamethoxazole, which exhibited higher toxicity in combination than individually at environmentally relevant levels. Analytical chemistry experiments revealed the in-situ generation of various byproducts (BPs) within the bioreactor system, with two of these BPs recording toxicity levels that surpassed those of their parent compound. The HSA approach successfully prevented the functional microbiome from being washed out of the reactor, while HSA efficiently removed antibiotic residues in their original and BP forms through synergistic adsorptive and biotransformation mechanisms, ultimately reducing the overall ecotoxicity. The use of HSA thus demonstrates promise not only as a mean to reduce the threat posed by toxic antibiotic residues to aquatic ecosystems but also as a practical solution to operational challenges, such as biomass loss/washout, that are frequently encountered in various environmental bioprocesses.
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Affiliation(s)
- Seungdae Oh
- Department of Civil Engineering, College of Engineering, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea; KHU-KIST Department of Converging Science and Technology, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea.
| | - Anh H Nguyen
- Department of Civil Engineering, College of Engineering, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Ji-Su Kim
- Department of Civil Engineering, University of Seoul, Dongdaemun-gu, Seoul, Republic of Korea
| | - Sang-Yeop Chung
- Department of Civil and Environmental Engineering, Yonsei University, Seodaemun-gu, Seoul, Republic of Korea
| | - Sung Kyu Maeng
- Department of Civil and Environmental Engineering, Sejong University, Gwangjin-gu, Seoul, Republic of Korea
| | - Young-Hoon Jung
- Department of Civil Engineering, College of Engineering, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Kyungjin Cho
- KHU-KIST Department of Converging Science and Technology, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea; Center for Water Cycle Research, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea; Division of Energy & Environment Technology, KIST school, Korea University of Science and Technology (UST), Seoul 02792, Republic of Korea
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Jiang J, Shan Z, Wang X, Zhu Y, Zhou J. Ecotoxicity of the nonsteroidal ecdysone mimic RH-5849 to Daphnia magna. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:10730-10739. [PMID: 29396821 DOI: 10.1007/s11356-018-1275-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 01/11/2018] [Indexed: 06/07/2023]
Abstract
The nonsteroidal ecdysone mimic 1,2-dibenzoyl-1-tert-butylhydrazine (RH-5849), a novel insect growth regulator, is mainly registered for use in rice fields. So far, its toxicity and ecological risks towards aquatic cladoceran invertebrates remain unclear. In this study, RH-5849 was evaluated for its acute and 21-day chronic toxicity towards Daphnia magna. The viability, morphology, growth, and reproduction of D. magna were observed to establish a concentration-toxicity relationship associated with the RH-5849 exposure. In addition, the relationship between the changes of physiological and biochemical indices and the chronic indices was analyzed in order to find potential early warning indicators in D. magna to the chronic risk of RH-5849 exposure. The results showed that the 48-h EC50 of acute immobilization and EC50 of 21-day survival of RH-5849 on D. magna were 45.3 and 1.34 mg/L, respectively. Chronic exposure to RH-5849 mainly affected the reproductive parameters of D. magna and the no observed effect concentration (NOEC) and the EC50 were 0.050 and 0.5423 mg/L, respectively. The number of offspring per female reduced significantly after 21-day exposure to 0.10 mg/L of RH-5849. The morphological changes, manifested in head width and body length, the length of the helmet or apical spine, and the curvature and transparency of the body, were observed in RH-5849-treated groups. Moreover, it was found that the alkaline phosphatase activity in D. magna after 5-7-day exposure was positively correlated with the number of offspring per female after 21 days. These results indicate the potential risk of RH-5849 towards aquatic crustaceans should be taken into consideration when applied to rice fields.
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Affiliation(s)
- Jinlin Jiang
- Nanjing Institute of Environmental Sciences/Key Laboratory of Pesticide Environmental Assessment and Pollution Control, Ministry of Environmental Protection, Nanjing, 210042, People's Republic of China.
| | - Zhengjun Shan
- Nanjing Institute of Environmental Sciences/Key Laboratory of Pesticide Environmental Assessment and Pollution Control, Ministry of Environmental Protection, Nanjing, 210042, People's Republic of China
| | - Xiaorong Wang
- School of the Environment, Nanjing University, Nanjing, 210093, People's Republic of China
| | - Yuxuan Zhu
- Nanjing Institute of Environmental Sciences/Key Laboratory of Pesticide Environmental Assessment and Pollution Control, Ministry of Environmental Protection, Nanjing, 210042, People's Republic of China
| | - Junying Zhou
- Nanjing Institute of Environmental Sciences/Key Laboratory of Pesticide Environmental Assessment and Pollution Control, Ministry of Environmental Protection, Nanjing, 210042, People's Republic of China
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Gaillard J, Thomas M, Iuretig A, Pallez C, Feidt C, Dauchy X, Banas D. Barrage fishponds: Reduction of pesticide concentration peaks and associated risk of adverse ecological effects in headwater streams. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 169:261-271. [PMID: 26773430 DOI: 10.1016/j.jenvman.2015.12.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 12/19/2015] [Accepted: 12/29/2015] [Indexed: 06/05/2023]
Abstract
Constructed wetlands have been suggested as pesticide risk mitigation measures. Yet, in many agricultural areas, ponds or shallow lakes are already present and may contribute to the control of non-point source contamination by pesticides. In order to test this hypothesis, we investigated the influence of extensively managed barrage fishponds (n = 3) on the dissolved concentrations of 100 pesticides in headwater streams over the course of a year. Among the 100 pesticides, 50 different substances were detected upstream and 48 downstream. Highest measured concentration upstream was 26.5 μg/L (2-methyl-4-chlorophenoxyacetic acid, MCPA) and 5.19 μg/L (isoproturon) downstream. Fishponds were found to reduce peak exposure levels as high pesticide concentrations (defined here as ≥ 1 μg/L) generally decreased by more than 90% between upstream and downstream sampling sites. The measured concentrations in the investigated streams were compared to laboratory toxicity data for standard test organisms (algae, invertebrates and fish) using the toxic unit approach. When considering the threshold levels set by the European Union within the first tier risk assessment procedure for pesticide registration (commission regulation (EU) N° 546/2011), regulatory threshold exceedances were observed for 22 pesticides upstream from fishponds and for 9 pesticides downstream. Therefore, the investigated barrage fishponds contributed to the reduction of pesticide peak concentrations and potential risk of adverse effects for downstream ecosystems.
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Affiliation(s)
- Juliette Gaillard
- Université de Lorraine, UR Animal et Fonctionnalités des Produits Animaux, EA 3998 Vandoeuvre-lès-Nancy, France; INRA, UR Animal et Fonctionnalités des Produits Animaux, USC INRA 340 Vandoeuvre-lès-Nancy, France.
| | - Marielle Thomas
- Université de Lorraine, UR Animal et Fonctionnalités des Produits Animaux, EA 3998 Vandoeuvre-lès-Nancy, France; INRA, UR Animal et Fonctionnalités des Produits Animaux, USC INRA 340 Vandoeuvre-lès-Nancy, France
| | - Alain Iuretig
- Université de Lorraine, UR Animal et Fonctionnalités des Produits Animaux, EA 3998 Vandoeuvre-lès-Nancy, France; INRA, UR Animal et Fonctionnalités des Produits Animaux, USC INRA 340 Vandoeuvre-lès-Nancy, France
| | - Christelle Pallez
- ANSES, Nancy Laboratory for Hydrology, Water Chemistry Department, Nancy, France
| | - Cyril Feidt
- Université de Lorraine, UR Animal et Fonctionnalités des Produits Animaux, EA 3998 Vandoeuvre-lès-Nancy, France; INRA, UR Animal et Fonctionnalités des Produits Animaux, USC INRA 340 Vandoeuvre-lès-Nancy, France
| | - Xavier Dauchy
- ANSES, Nancy Laboratory for Hydrology, Water Chemistry Department, Nancy, France
| | - Damien Banas
- Université de Lorraine, UR Animal et Fonctionnalités des Produits Animaux, EA 3998 Vandoeuvre-lès-Nancy, France; INRA, UR Animal et Fonctionnalités des Produits Animaux, USC INRA 340 Vandoeuvre-lès-Nancy, France
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To identify the important soil properties affecting dinoseb adsorption with statistical analysis. ScientificWorldJournal 2013; 2013:362854. [PMID: 23737715 PMCID: PMC3655634 DOI: 10.1155/2013/362854] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Accepted: 04/03/2013] [Indexed: 11/17/2022] Open
Abstract
Investigating the influences of soil characteristic factors on dinoseb adsorption parameter with different statistical methods would be valuable to explicitly figure out the extent of these influences. The correlation coefficients and the direct, indirect effects of soil characteristic factors on dinoseb adsorption parameter were analyzed through bivariate correlation analysis, and path analysis. With stepwise regression analysis the factors which had little influence on the adsorption parameter were excluded. Results indicate that pH and CEC had moderate relationship and lower direct effect on dinoseb adsorption parameter due to the multicollinearity with other soil factors, and organic carbon and clay contents were found to be the most significant soil factors which affect the dinoseb adsorption process. A regression is thereby set up to explore the relationship between the dinoseb adsorption parameter and the two soil factors: the soil organic carbon and clay contents. A 92% of the variation of dinoseb sorption coefficient could be attributed to the variation of the soil organic carbon and clay contents.
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Inter-specific differences in survival and reproduction of cladocerans to nitrite gradient and the ecological implications. BIOCHEM SYST ECOL 2013. [DOI: 10.1016/j.bse.2012.12.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Xiang F, Geng L, Lü K, Zhang J, Minter EJ, Yang Z. Effect of long-term nitrite exposure on the cladoceran Daphnia obtusa: Survival, moults, and reproduction. BIOCHEM SYST ECOL 2012. [DOI: 10.1016/j.bse.2011.12.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Zaldívar JM, Baraibar J. A biology-based dynamic approach for the reconciliation of acute and chronic toxicity tests: application to Daphnia magna. CHEMOSPHERE 2011; 82:1547-1555. [PMID: 21168184 DOI: 10.1016/j.chemosphere.2010.11.062] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2010] [Revised: 11/05/2010] [Accepted: 11/21/2010] [Indexed: 05/30/2023]
Abstract
There is the need to integrate existing toxicity data in a coherent framework for extending their domain of applicability as well as their extrapolation potential. This integration would also reduce time and cost-consuming aspects of these tests and reduce animal usage. In this work, based on data extracted from literature, we have assessed the advantages that a dynamic biology-toxicant fate coupled model for Daphnia magna could provide when assessing toxicity data, in particular, the possibility to obtain from short-term (acute) toxicity test long-term (chronic) toxicity values taking into account the inherent variability of D. magna populations and the multiple sources of data. The results show that this approach overcomes some of the limitations of existing toxicity tests and that the prediction errors are considerably reduced when compared with the factor from 2 to 5 obtained using acute-to-chronic ratios.
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Affiliation(s)
- José-Manuel Zaldívar
- European Commission, Joint Research Centre, Institute for Health and Consumer Protection, Systems Toxicology Unit, Ispra (VA), Italy.
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Vallotton N, Moser D, Eggen RIL, Junghans M, Chèvre N. S-metolachlor pulse exposure on the alga Scenedesmus vacuolatus: effects during exposure and the subsequent recovery. CHEMOSPHERE 2008; 73:395-400. [PMID: 18602658 DOI: 10.1016/j.chemosphere.2008.05.039] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2008] [Revised: 05/14/2008] [Accepted: 05/18/2008] [Indexed: 05/26/2023]
Abstract
In streams and creeks, the aquatic flora is exposed to fluctuating concentrations of herbicides during and following their application. Peak concentrations of herbicides, like the chloroacetanilide S-metolachlor, are usually detected following rain events. In this study, we assessed the effect of S-metolachlor pulse exposure on the algae Scenedesmus vacuolatus. We measured the time-dependency of effects during exposure on algae population and identified the algae development stage most sensitive to S-metolachlor. Furthermore, we assessed the time-to-recovery of the algae following exposure. A 6h pulse exposure at 598microgl(-1) was sufficient to inhibit cell reproduction by 50%. However, the exposure period had to coincide with the cell development stage specifically inhibited by S-metolachlor, which is the end of the cell growth phase. In algae populations composed of cells at all development stages, we initially observed an increase in the size of some algal cells, ultimately leading to an inhibition of the growth rate. In these experimental conditions, effects were observed after 18h of exposure and greatly increased with time. The recovery of algae following exposure to strongly inhibiting S-metolachlor concentrations was delayed and only occurred after 29h. These findings suggest that peak exposure to S-metolachlor may affect the growth of sensitive alga in surface waters, considering that the effects extend beyond the period of exposure.
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Affiliation(s)
- Nathalie Vallotton
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstr. 133, P.O. Box 611, 8600 Duebendorf, Switzerland
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Chèvre N, Brazzale AR. Cost-effective experimental design to support modeling of concentration-response functions. CHEMOSPHERE 2008; 72:803-810. [PMID: 18436276 DOI: 10.1016/j.chemosphere.2008.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2007] [Revised: 02/21/2008] [Accepted: 03/04/2008] [Indexed: 05/26/2023]
Abstract
Modeling concentration-response function became extremely popular in ecotoxicology during the last decade. Indeed, modeling allows determining the total response pattern of a given substance. However, reliable modeling is consuming in term of data, which is in contradiction with the current trend in ecotoxicology, which aims to reduce, for cost and ethical reasons, the number of data produced during an experiment. It is therefore crucial to determine experimental design in a cost-effective manner. In this paper, we propose to use the theory of locally D-optimal designs to determine the set of concentrations to be tested so that the parameters of the concentration-response function can be estimated with high precision. We illustrated this approach by determining the locally D-optimal designs to estimate the toxicity of the herbicide dinoseb on daphnids and algae. The results show that the number of concentrations to be tested is often equal to the number of parameters and often related to the their meaning, i.e. they are located close to the parameters. Furthermore, the results show that the locally D-optimal design often has the minimal number of support points and is not much sensitive to small changes in nominal values of the parameters. In order to reduce the experimental cost and the use of test organisms, especially in case of long-term studies, reliable nominal values may therefore be fixed based on prior knowledge and literature research instead of on preliminary experiments.
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Affiliation(s)
- Nathalie Chèvre
- Faculty of Geosciences and Environment, University of Lausanne, Lausanne, Switzerland.
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