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Shi G, Hou R, Fu Q, Li T, Chen Q. Effects of biochar and compost on microbial community assembly and metabolic processes in glyphosate, imidacloprid and pyraclostrobin polluted soil under freezethaw cycles. JOURNAL OF HAZARDOUS MATERIALS 2024; 471:134397. [PMID: 38677114 DOI: 10.1016/j.jhazmat.2024.134397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Revised: 04/21/2024] [Accepted: 04/22/2024] [Indexed: 04/29/2024]
Abstract
Biochar and organic compost are widely used in agricultural soil remediation as soil immobilization agents. However, the effects of biochar and compost on microbial community assembly processes in polluted soil under freezingthawing need to be further clarified. Therefore, a freezethaw cycle experiment was conducted with glyphosate (herbicide), imidacloprid (insecticide) and pyraclostrobin (fungicide) polluted to understand the effect of biochar and compost on microbial community assembly and metabolic behavior. We found that biochar and compost could significantly promote the degradation of glyphosate, imidacloprid and pyraclostrobin in freezethaw soil decrease the half-life of the three pesticides. The addition of immobilization agents improved soil bacterial and fungal communities and promoted the transformation from homogeneous dispersal to homogeneous selection. For soil metabolism, the combined addition of biochar and compost alleviated the pollution of glyphosate, imidacloprid and imidacloprid to soil through up-regulation of metabolites (DEMs) in amino acid metabolism pathway and down-regulation of DEMs in fatty acid metabolism pathway. The structural equation modeling (SEM) results showed that soil pH and DOC were the main driving factors affecting microbial community assembly and metabolites. In summary, the combined addition of biochar and compost reduced the adverse effects of pesticides residues.
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Affiliation(s)
- Guoxin Shi
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, Heilongjiang 150030, China; Key Laboratory of Effective Utilization of Agricultural Water Resources of Ministry of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang 150030, China; Heilongjiang Provincial Key Laboratory of Water Resources and Water Conservancy Engineering in Cold Region, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Renjie Hou
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, Heilongjiang 150030, China; Key Laboratory of Effective Utilization of Agricultural Water Resources of Ministry of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang 150030, China; Heilongjiang Provincial Key Laboratory of Water Resources and Water Conservancy Engineering in Cold Region, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Qiang Fu
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, Heilongjiang 150030, China; Key Laboratory of Effective Utilization of Agricultural Water Resources of Ministry of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang 150030, China; Heilongjiang Provincial Key Laboratory of Water Resources and Water Conservancy Engineering in Cold Region, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
| | - Tianxiao Li
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, Heilongjiang 150030, China; Key Laboratory of Effective Utilization of Agricultural Water Resources of Ministry of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang 150030, China; Heilongjiang Provincial Key Laboratory of Water Resources and Water Conservancy Engineering in Cold Region, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Qingshan Chen
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
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Liu S, Huang J, He W, Shi L, Zhang W, Li E, Zhang C, Pang H. Impact of polyamide microplastics on riparian sediment structures and Cd(II) adsorption: A comparison of natural exposure, dry-wet cycles, and freeze-thaw cycles. JOURNAL OF HAZARDOUS MATERIALS 2024; 466:133589. [PMID: 38271876 DOI: 10.1016/j.jhazmat.2024.133589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 01/10/2024] [Accepted: 01/19/2024] [Indexed: 01/27/2024]
Abstract
Microplastics (MPs) accumulation in sediments has posed a huge threat to freshwater ecosystems. However, it is still unclear the effect of MPs on riparian sediment structures and contaminant adsorption under different hydrological processes. In this study, three concentrations of polyamide (PA) MPs-treated sediments (0.1%, 1%, and 10%, w/w) were subjected to natural (NA) exposure, dry-wet (DW) cycles, and freeze-thaw (FT) cycles. The results indicated that PA MPs-added sediment increased the micro-aggregates by 10.1%-18.6% after FT cycles, leading to a decrease in aggregate stability. The pH, OM, and DOC of sediments were significantly increased in DW and FT treatments. In addition, the increasing concentration of PA MPs showed an obvious decrease in aromaticity, humification, and molecular weight of sediment DOM in FT treatments. Also, high level of MPs was more likely to inhibit the formation of humic-like substances and tryptophan-like proteins. For DW and FT cycles, 0.1% and 1% PA MPs-treated sediments slightly increased the adsorption capacity of Cd(II), which may be ascribed to the aging of MPs. Further correlation analysis found that DW and FT altered the link between DOM indicators, and aggregate stability was directly related to the changes in sediment organic carbon. Our findings revealed the ecological risk of MPs accumulating in riparian sediments under typical hydrological processes.
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Affiliation(s)
- Si Liu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Jinhui Huang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.
| | - Wenjuan He
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Lixiu Shi
- College of Hydraulic and Environmental Engineering, Changsha University of Science and Technology, Changsha 410114, PR China
| | - Wei Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Enjie Li
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Chenyu Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Haoliang Pang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
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Vandermaesen J, Du S, Daly AJ, Baetens JM, Horemans B, De Baets B, Boon N, Springael D. Interspecies Interactions of the 2,6-Dichlorobenzamide Degrading Aminobacter sp. MSH1 with Resident Sand Filter Bacteria: Indications for Mutual Cooperative Interactions That Improve BAM Mineralization Activity. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:1352-1364. [PMID: 34982540 DOI: 10.1021/acs.est.1c06653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Bioaugmentation often involves an invasion process requiring the establishment and activity of a foreign microbe in the resident community of the target environment. Interactions with resident micro-organisms, either antagonistic or cooperative, are believed to impact invasion. However, few studies have examined the variability of interactions between an invader and resident species of its target environment, and none of them considered a bioremediation context. Aminobacter sp. MSH1 mineralizing the groundwater micropollutant 2,6-dichlorobenzamide (BAM), is proposed for bioaugmentation of sand filters used in drinking water production to avert BAM contamination. We examined the nature of the interactions between MSH1 and 13 sand filter resident bacteria in dual and triple species assemblies in sand microcosms. The residents affected MSH1-mediated BAM mineralization without always impacting MSH1 cell densities, indicating effects on cell physiology rather than on cell number. Exploitative competition explained most of the effects (70%), but indications of interference competition were also found. Two residents improved BAM mineralization in dual species assemblies, apparently in a mutual cooperation, and overruled negative effects by others in triple species systems. The results suggest that sand filter communities contain species that increase MSH1 fitness. This opens doors for assisting bioaugmentation through co-inoculation with "helper" bacteria originating from and adapted to the target environment.
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Affiliation(s)
- Johanna Vandermaesen
- Division of Soil and Water Management, KU Leuven, Kasteelpark Arenberg 20 Bus 2459, B-3001 Heverlee, Belgium
| | - Siyao Du
- Division of Soil and Water Management, KU Leuven, Kasteelpark Arenberg 20 Bus 2459, B-3001 Heverlee, Belgium
| | - Aisling J Daly
- KERMIT, Department of Data Analysis and Mathematical Modelling, Ghent University, Coupure Links 653, B-9000 Gent, Belgium
| | - Jan M Baetens
- KERMIT, Department of Data Analysis and Mathematical Modelling, Ghent University, Coupure Links 653, B-9000 Gent, Belgium
| | - Benjamin Horemans
- Division of Soil and Water Management, KU Leuven, Kasteelpark Arenberg 20 Bus 2459, B-3001 Heverlee, Belgium
| | - Bernard De Baets
- KERMIT, Department of Data Analysis and Mathematical Modelling, Ghent University, Coupure Links 653, B-9000 Gent, Belgium
| | - Nico Boon
- Center for Microbial Ecology and Technology (CMET), Ghent University, Coupure Links 653, B-9000 Gent, Belgium
| | - Dirk Springael
- Division of Soil and Water Management, KU Leuven, Kasteelpark Arenberg 20 Bus 2459, B-3001 Heverlee, Belgium
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A Literature Review of Wetland Treatment Systems Used to Treat Runoff Mixtures Containing Antibiotics and Pesticides from Urban and Agricultural Landscapes. WATER 2021. [DOI: 10.3390/w13243631] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Wetland treatment systems are used extensively across the world to mitigate surface runoff. While wetland treatment for nitrogen mitigation has been comprehensively reviewed, the implications of common-use pesticides and antibiotics on nitrogen reduction remain relatively unreviewed. Therefore, this review seeks to comprehensively assess the removal of commonly used pesticides and antibiotics and their implications for nitrogen removal in wetland treatment systems receiving non-point source runoff from urban and agricultural landscapes. A total of 181 primary studies were identified spanning 37 countries. Most of the reviewed publications studied pesticides (n = 153) entering wetlands systems, while antibiotics (n = 29) had fewer publications. Even fewer publications reviewed the impact of influent mixtures on nitrogen removal processes in wetlands (n = 16). Removal efficiencies for antibiotics (35–100%), pesticides (−619–100%), and nitrate-nitrogen (−113–100%) varied widely across the studies, with pesticides and antibiotics impacting microbial communities, the presence and type of vegetation, timing, and hydrology in wetland ecosystems. However, implications for the nitrogen cycle were dependent on the specific emerging contaminant present. A significant knowledge gap remains in how wetland treatment systems are used to treat non-point source mixtures that contain nutrients, pesticides, and antibiotics, resulting in an unknown regarding nitrogen removal efficiency as runoff contaminant mixtures evolve.
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Nowak KM, Miltner A, Poll C, Kandeler E, Streck T, Pagel H. Plant litter enhances degradation of the herbicide MCPA and increases formation of biogenic non-extractable residues in soil. ENVIRONMENT INTERNATIONAL 2020; 142:105867. [PMID: 32585504 DOI: 10.1016/j.envint.2020.105867] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 04/22/2020] [Accepted: 06/03/2020] [Indexed: 06/11/2023]
Abstract
Amendment of soils with plant residues is common practice for improving soil quality. In addition to stimulated microbial activity, the supply of fresh soluble organic (C) from litter may accelerate the microbial degradation of chemicals in soils. Therefore, the aim of this study was to test whether the maize litter enhances degradation of 4-chloro-2-methylphenoxyacetic acid (MCPA) and increases formation of non-toxic biogenic non-extractable residues (bioNERs). Soil was amended with 13C6-MCPA and incubated with or without litter addition on the top. Three soil layers were sampled with increasing distance from the top: 0-2 mm, 2-5 mm and 5-20 mm; and the mass balance of 13C6-MCPA transformation determined. Maize litter promoted microbial activity, mineralization of 13C6-MCPA and bioNER formation in the upper two layers (0-2 and 2-5 mm). The mineralization of 13C6-MCPA in soil with litter increased to 27% compared to only 6% in the control. Accordingly, maize addition reduced the amount of extractable residual MCPA in soil from 77% (control) to 35% of initially applied 13C6-MCPA. While non-extractable residues (NERs) were <6% in control soil, litter addition raised NERs to 21%. Thereby, bioNERs comprised 14% of 13C6-MCPA equivalents. We found characteristic differences of bioNER formation with distance to litter. While total NERs in soil at a distance of 2-5 mm were mostly identified as 13C-bioNERs (97%), only 45-46% of total NERs were assigned to bioNERs in the 0-2 and 5-20 mm layers. Phospholipid fatty acid analysis indicated that fungi and Gram-negative bacteria were mainly involved in MCPA degradation. Maize-C particularly stimulated fungal activity in the adjacent soil, which presumably facilitated non-biogenic NER formation. The plant litter accelerated formation of both non-toxic bioNERs and non-biogenic NERs. More studies on the structural composition of non-biogenic NERs with toxicity potential are needed for future recommendations on litter addition in agriculture.
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Affiliation(s)
- Karolina M Nowak
- Technische Universität Berlin, Institute of Biotechnology, Chair of Geobiotechnology, Ackerstraße 76, 13355 Berlin, Germany; Helmholtz-Centre for Environmental Research - UFZ, Department of Environmental Biotechnology, Permoserstr. 15, 04318 Leipzig, Germany.
| | - Anja Miltner
- Helmholtz-Centre for Environmental Research - UFZ, Department of Environmental Biotechnology, Permoserstr. 15, 04318 Leipzig, Germany
| | - Christian Poll
- University of Hohenheim, Institute of Soil Science and Land Evaluation, Department of Soil Biology, Emil-Wolff-Str. 27, 70599 Stuttgart, Germany
| | - Ellen Kandeler
- University of Hohenheim, Institute of Soil Science and Land Evaluation, Department of Soil Biology, Emil-Wolff-Str. 27, 70599 Stuttgart, Germany
| | - Thilo Streck
- University of Hohenheim, Institute of Soil Science and Land Evaluation, Department of Biogeophysics, Emil-Wolff-Str. 27, 70599 Stuttgart, Germany
| | - Holger Pagel
- University of Hohenheim, Institute of Soil Science and Land Evaluation, Department of Biogeophysics, Emil-Wolff-Str. 27, 70599 Stuttgart, Germany
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Regnery J, Li D, Lee J, Smits KM, Sharp JO. Hydrogeochemical and microbiological effects of simulated recharge and drying within a 2D meso-scale aquifer. CHEMOSPHERE 2020; 241:125116. [PMID: 31683429 DOI: 10.1016/j.chemosphere.2019.125116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 10/10/2019] [Accepted: 10/12/2019] [Indexed: 06/10/2023]
Abstract
Oscillating cycles of dewatering (termed drying) and rewetting during managed aquifer recharge (MAR) are used to maintain infiltration rates and could also exert an influence on subsurface microbial structure and respiratory processes. Despite this practice, little knowledge is available about changes to microbial community structure and trace organic chemical biodegradation potential in MAR systems under these conditions. A biologically active two-dimensional (2D) synthetic MAR system equipped with automated sensors (temperature, water pressure, conductivity, soil moisture, oxidation-reduction potential) and embedded water and soil sampling ports was used to test and model these important subsurface processes at the meso-scale. The fate and transport of the antiepileptic drug carbamazepine, the antibiotics sulfamethoxazole and trimethoprim, and the flame retardant tris (2-chloroethyl) phosphate were simulated using the finite element analysis model, FEFLOW. All of these compounds exhibit moderate to poor biodegradability in MAR systems. Within the operational MAR scenario tested, three episodic drying cycles spanning between 18 and 24 days were conducted over a period of 184 days. Notably, cessation of flow and partial dewatering of the 2D synthetic aquifer during dry cycles caused no measurable decrease in soil moisture content beyond the near-surface layer. The episodic flow introduction and dewatering cycles in turn had little impact on overall trace organic chemical biotransformation behavior and soil microbial community structure. However, spatial differences in oxidation-reduction potential and soil moisture were both identified as significant environmental predictors for microbial community structure in the 2D synthetic aquifer.
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Affiliation(s)
- Julia Regnery
- Dept. of Civil and Environmental Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, CO 80401, USA; Dept. of Ecotoxicology and Biochemistry, Federal Institute of Hydrology, Am Mainzer Tor 1, 56068 Koblenz, Germany.
| | - Dong Li
- Bren School of Environmental Science & Management, University of California Santa Barbara, 2400 Bren Hall, Santa Barbara, CA 93106, USA
| | - Jonghyun Lee
- Dept. of Civil and Environmental Engineering and Water Resources Research Center, University of Hawai'i at Mānoa, 2540 Dole Street, Honolulu, HI 96822, USA
| | - Kathleen M Smits
- Dept. of Civil Engineering, The University of Texas at Arlington, 701 South Nedderman Drive, Arlington, TX 76019, USA
| | - Jonathan O Sharp
- Dept. of Civil and Environmental Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, CO 80401, USA
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Daly AJ, Stock M, Baetens JM, De Baets B. Guiding Mineralization Co-Culture Discovery Using Bayesian Optimization. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:14459-14469. [PMID: 31682110 DOI: 10.1021/acs.est.9b05942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Many disciplines rely on testing combinations of compounds, materials, proteins, or bacterial species to drive scientific discovery. It is time-consuming and expensive to determine experimentally, via trial-and-error or random selection approaches, which of the many possible combinations will lead to desirable outcomes. Hence, there is a pressing need for more rational and efficient experimental design approaches to reduce experimental effort. In this work, we demonstrate the potential of machine learning methods for the in silico selection of promising co-culture combinations in the application of bioaugmentation. We use the example of pollutant removal in drinking water treatment plants, which can be achieved using co-cultures of a specialized pollutant degrader with combinations of bacterial isolates. To reduce the experimental effort needed to discover high-performing combinations, we propose a data-driven experimental design. Based on a dataset of mineralization performance for all pairs of 13 bacterial species co-cultured with MSH1, we built a Gaussian process regression model to predict the Gompertz mineralization parameters of the co-cultures of two and three species, based on the single-strain parameters. We subsequently used this model in a Bayesian optimization scheme to suggest potentially high-performing combinations of bacteria. We achieved good performance with this approach, both for predicting mineralization parameters and for selecting effective co-cultures, despite the limited dataset. As a novel application of Bayesian optimization in bioremediation, this experimental design approach has promising applications for highlighting co-culture combinations for in vitro testing in various settings, to lessen the experimental burden and perform more targeted screenings.
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Affiliation(s)
- Aisling J Daly
- KERMIT, Department of Data Analysis and Mathematical Modelling , Ghent University , Coupure Links 653 , B-9000 Ghent , Belgium
| | - Michiel Stock
- KERMIT, Department of Data Analysis and Mathematical Modelling , Ghent University , Coupure Links 653 , B-9000 Ghent , Belgium
| | - Jan M Baetens
- KERMIT, Department of Data Analysis and Mathematical Modelling , Ghent University , Coupure Links 653 , B-9000 Ghent , Belgium
| | - Bernard De Baets
- KERMIT, Department of Data Analysis and Mathematical Modelling , Ghent University , Coupure Links 653 , B-9000 Ghent , Belgium
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Vandermaesen J, Horemans B, Degryse J, Boonen J, Walravens E, Springael D. The pesticide mineralization capacity in sand filter units of drinking water treatment plants (DWTP): Consistency in time and relationship with intake water and sand filter characteristics. CHEMOSPHERE 2019; 228:427-436. [PMID: 31051344 DOI: 10.1016/j.chemosphere.2019.04.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 03/21/2019] [Accepted: 04/04/2019] [Indexed: 06/09/2023]
Abstract
Sand filters (SFs) are commonly applied in drinking water treatment plants (DWTPs) for removal of iron and manganese but also show potential for microbial degradation of pesticide residues. The latter is advantageous in case the intake water contains pesticide residues. However, whether this involves mineralization suggesting no generation of harmful transformation products, its consistency over time, and how this ability relates to physicochemical and biological characteristics of the DWTP intake water and the SFs is unknown. The capacity to mineralize the herbicides bentazon and 2-methyl-4-chlorophenoxyacetic acid (MCPA) was examined in SF samples from 11 DWTPs differing in operation, intake water composition and pesticide contamination level. MCPA was mineralized in all biologically active SFs while mineralization of bentazon occurred rarely. Mineralization of both compounds was consistent in time and across samples taken from different SF units of the same DWTP. Kinetic modelling of mineralization curves suggested the occurrence of growth linked bentazon and MCPA mineralization in several SF samples. Multivariate analysis correlating intake water/SF characteristics with pesticide mineralization indicated that pesticide mineralization capacity depended on a range of intake water characteristics, but was not necessarily explained by the presence of the pesticide in the intake water and hence the in situ exposure of the SF community to the pesticide. This was supported by testing a sample from DWTP Kluizen for its capacity to mineralize 5 other pesticides including pesticides not present or occasionally present in the intake water. All of those pesticides were mineralized as well.
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Affiliation(s)
- Johanna Vandermaesen
- Division of Soil and Water Management, KU Leuven, Kasteelpark Arenberg 20 Bus 2459, B-3001, Heverlee, Belgium
| | - Benjamin Horemans
- Division of Soil and Water Management, KU Leuven, Kasteelpark Arenberg 20 Bus 2459, B-3001, Heverlee, Belgium
| | - Julie Degryse
- Centraal Laboratorium, De Watergroep, Researchpark Haasrode Leuven 1834, Technologielaan 23, B-3001, Heverlee, Belgium
| | - Jos Boonen
- Centraal Laboratorium, De Watergroep, Researchpark Haasrode Leuven 1834, Technologielaan 23, B-3001, Heverlee, Belgium
| | - Eddy Walravens
- Centraal Laboratorium, De Watergroep, Researchpark Haasrode Leuven 1834, Technologielaan 23, B-3001, Heverlee, Belgium
| | - Dirk Springael
- Division of Soil and Water Management, KU Leuven, Kasteelpark Arenberg 20 Bus 2459, B-3001, Heverlee, Belgium.
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Individual-Based Modelling of Invasion in Bioaugmented Sand Filter Communities. Processes (Basel) 2018. [DOI: 10.3390/pr6010002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Yang Y, Wang H, Huang L, Zhang S, He Y, Gao Q, Ye Q. Effects of superabsorbent polymers on the fate of fungicidal carbendazim in soils. JOURNAL OF HAZARDOUS MATERIALS 2017; 328:70-79. [PMID: 28103488 DOI: 10.1016/j.jhazmat.2016.12.057] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 12/27/2016] [Accepted: 12/28/2016] [Indexed: 06/06/2023]
Abstract
Superabsorbent polymers (SAPs) have been extensively used as soil amendments to retain water, and they often coexist with pesticides in agricultural fields. However, effects of SAPs on the fate of pesticides in soil remain poorly understood. In this study, a laboratory experiment was conducted to evaluate the effects of SAPs on the transformation of 14C-carbendazim in soils. The results showed that compared to the SAPs-free control, 11.4% relative reduction of 14C-carbendazim extractable residue was observed in red clayey soil with SAPs amendment after 100days of incubation (p<0.05). Carbendazim dissipation was enhanced by 34.7%, while no obvious difference was found in loamy soil and saline soil (p>0.05). SAPs changed the profiles of major metabolites (2-aminobenzimidazole and 2-hydroxybenzimidazole) to some extent. After 100days of SAPs treatment, the mineralization of 14C-carbendazim was significantly reduced by 37.6% and 41.2% in loamy soil and saline soil, respectively, relative to the SAPs-free treatment (p<0.05). SAPs increased the bound residue of carbendazim by 11.1-19.1% in comparison with SAPs-free controls. These findings suggest SAPs amendments significantly affected the fate of carbendazim and attention should be given to the assessment of environmental and ecological safety of pesticides in SAPs-amended soils.
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Affiliation(s)
- Yatian Yang
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture and Zhejiang Province, Zhejiang University, Hangzhou 310029, China
| | - Haiyan Wang
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture and Zhejiang Province, Zhejiang University, Hangzhou 310029, China.
| | - Lei Huang
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture and Zhejiang Province, Zhejiang University, Hangzhou 310029, China
| | - Sufen Zhang
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture and Zhejiang Province, Zhejiang University, Hangzhou 310029, China
| | - Yupeng He
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture and Zhejiang Province, Zhejiang University, Hangzhou 310029, China
| | - Qi Gao
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture and Zhejiang Province, Zhejiang University, Hangzhou 310029, China
| | - Qingfu Ye
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture and Zhejiang Province, Zhejiang University, Hangzhou 310029, China.
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Application of biodegradation in mitigating and remediating pesticide contamination of freshwater resources: state of the art and challenges for optimization. Appl Microbiol Biotechnol 2016; 100:7361-76. [DOI: 10.1007/s00253-016-7709-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 06/26/2016] [Accepted: 06/27/2016] [Indexed: 10/21/2022]
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