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Zhao, W., Ma, J., Liu, Q., Song, J., Tysklind, M., Liu, C., . . . Wu, F. (2023). Comparison and application of SOFM, fuzzy c-means and k-means clustering algorithms for natural soil environment regionalization in China. Environmental Research, 216, Article ID 114519.
Open this publication in new window or tab >>Comparison and application of SOFM, fuzzy c-means and k-means clustering algorithms for natural soil environment regionalization in China
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2023 (English)In: Environmental Research, ISSN 0013-9351, E-ISSN 1096-0953, Vol. 216, article id 114519Article in journal (Refereed) Published
Abstract [en]

Soil attributes and their environmental drivers exhibit different patterns in different geographical directions, along with distinct regional characteristics, which may have important effects on substance migration and transformation such as organic matter and soil elements or the environmental impacts of pollutants. Therefore, regional soil characteristics should be considered in the process of regionalization for environmental management. However, no comprehensive evaluation or systematic classification of the natural soil environment has been established for China. Here, we established an index system for natural soil environmental regionalization (NSER) by combining literature data obtained based on bibliometrics with the analytic hierarchy process (AHP). Based on the index system, we collected spatial distribution data for 14 indexes at the national scale. In addition, three clustering algorithms—self-organizing feature mapping (SOFM), fuzzy c-means (FCM) and k-means (KM)—were used to classify and define the natural soil environment. We imported four cluster validity indexes (CVI) to evaluate different models: Davies-Bouldin index (DB), Silhouette index (Sil) and Calinski-Harabasz index (CH) for FCM and KM, clustering quality index (CQI) for SOFM. Analysis and comparison of the results showed that when the number of clusters was 13, the FCM clustering algorithm achieved the optimal clustering results (DB = 1.16, Sil = 0.78, CH = 6.77 × 106), allowing the natural soil environment of China to be divided into 12 regions with distinct characteristics. Our study provides a set of comprehensive scientific research methods for regionalization research based on spatial data, it has important reference value for improving soil environmental management based on local conditions in China.

Place, publisher, year, edition, pages
Elsevier, 2023
Keywords
Soil regionalization, Soil classification, Digital soil mapping, Unsupervised clustering, Cluster validity
National Category
Soil Science
Identifiers
urn:nbn:se:umu:diva-201022 (URN)10.1016/j.envres.2022.114519 (DOI)000901443000003 ()36252833 (PubMedID)2-s2.0-85140450623 (Scopus ID)
Available from: 2022-11-15 Created: 2022-11-15 Last updated: 2023-09-05Bibliographically approved
Bidleman, T. F., Ericson, L., Liljelind, P. & Tysklind, M. (2023). Drosophilin a methyl ether (DAME) and other chlorinated dimethoxybenzenes in fungi and forest litter from Sweden. Chemosphere, 347, Article ID 140685.
Open this publication in new window or tab >>Drosophilin a methyl ether (DAME) and other chlorinated dimethoxybenzenes in fungi and forest litter from Sweden
2023 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 347, article id 140685Article in journal (Refereed) Published
Abstract [en]

Fungi and substrates undergoing fungal decomposition were collected from forests in northern and southernSweden and analyzed for chlorinated dimethoxybenzenes (DMBs). Specimens were fungi fruiting bodies, rottingwood, forest litter and underlying humus. Targeted compounds were DAME (1,2,4,5-tetrachloro-3,6-DMB) andrelated fungal secondary metabolites. A screening procedure was developed which involved soaking the speci-mens in ethyl acetate followed by analysis by capillary gas chromatography – mass spectrometry with mass selec-tive detection (GC-MSD). DAME was the most frequently found (62% of 47 specimens) and often the most abun-dant target compound, with range and mean ± SD concentrations of <0.0017–3.81 and 0.21 ± 0.63 mg kg−1ww. Based on log-log correlations of partition coefficients of hydrophobic compounds between fungal biomass/water (KD) and octanol/water (KOW), five species of fungi are suggested to produce DAME de novo versus bioaccu-mulation from forest runoff water. Full-scan mass spectra of some high-concentration specimens indicated thepresence of a Cl2DMB and a Cl3DMB, which could not be identified further due to lack of standards, anddrosophilin A (DA = 2,3,5,6-tetrachloro-4-methoxyphenol), the precursor to DAME. Tetrachloroveratrole(TeCV = 1,2,3,4-tetrachloro-5,6-DMB) was found in only a few specimens. This study supports our hypothesis offungi as a source of DAME in terrestrial runoff and indicates that other chlorinated secondary metabolites arepresent. DAME is widely distributed globally, and it would be good to have a better understanding of its sourcesand pathways as a marker of terrestrial organochlorines and their availability for bioaccumulation

Place, publisher, year, edition, pages
Elsevier, 2023
Keywords
fungi, forest litter, chlorinated secondary metabolites, DAME, halomethoxybenzenes
National Category
Organic Chemistry Ecology
Research subject
environmental science
Identifiers
urn:nbn:se:umu:diva-217032 (URN)10.1016/j.chemosphere.2023.140685 (DOI)37981018 (PubMedID)2-s2.0-85177876535 (Scopus ID)
Projects
EcoChange
Funder
Swedish Research Council Formas, EcoChangeSwedish Research Council Formas
Available from: 2023-11-23 Created: 2023-11-23 Last updated: 2023-12-14Bibliographically approved
Berglund, Å. M. M., Gallampois, C., Ripszam, M., Larsson, H., Figueroa, D., Griniene, E., . . . Tysklind, M. (2023). Effects on the food-web structure and bioaccumulation patterns of organic contaminants in a climate-altered Bothnian Sea mesocosms. Frontiers in Marine Science, 10, Article ID 1244434.
Open this publication in new window or tab >>Effects on the food-web structure and bioaccumulation patterns of organic contaminants in a climate-altered Bothnian Sea mesocosms
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2023 (English)In: Frontiers in Marine Science, E-ISSN 2296-7745, Vol. 10, article id 1244434Article in journal (Refereed) Published
Abstract [en]

Climate change is expected to alter global temperature and precipitation patterns resulting in complex environmental impacts. The proposed higher precipitation in northern Scandinavia would increase runoff from land, hence increase the inflow of terrestrial dissolved organic matter (tDOM) in coastal regions. This could promote heterotrophic bacterial production and shift the food web structure, by favoring the microbial food web. The altered climate is also expected to affect transport and availability of organic micropollutants (MPs), with downstream effects on exposure and accumulation in biota. This study aimed to assess climate-induced changes in a Bothnian Sea food web structure as well as bioaccumulation patterns of MPs. We performed a mesocosms-study, focusing on aquatic food webs with fish as top predator. Alongside increased temperature, mesocosm treatments included tDOM and MP addition. The tDOM addition affected nutrient availability and boosted both phytoplankton and heterotrophic bacteria in our fairly shallow mesocosms. The increased tDOM further benefitted flagellates, ciliates and mesozooplankton, while the temperature increase and MP addition had minor effect on those organism groups. Temperature, on the other hand, had a negative impact on fish growth and survival, whereas tDOM and MP addition only had minor impact on fish. Moreover, there were indications that bioaccumulation of MPs in fish either increased with tDOM addition or decreased at higher temperatures. If there was an impact on bioaccumulation, moderately lipophilic MPs (log Kow 3.6 - 4.6) were generally affected by tDOM addition and more lipophilic MPs (log Kow 3.8 to 6.4) were generally affected by increased temperature. This study suggest that both increased temperatures and addition of tDOM likely will affect bioaccumulation patterns of MPs in shallow coastal regions, albeit with counteracting effects.

Place, publisher, year, edition, pages
Frontiers Media S.A., 2023
Keywords
organic contaminants, climate impact, food web, bioaccumulation, ecology, Bothnian Sea
National Category
Environmental Sciences Ecology
Identifiers
urn:nbn:se:umu:diva-217906 (URN)10.3389/fmars.2023.1244434 (DOI)001092680700001 ()
Funder
Ecosystem dynamics in the Baltic Sea in a changing climate perspective - ECOCHANGE, 2009-149The Kempe Foundations
Available from: 2023-12-20 Created: 2023-12-20 Last updated: 2023-12-20Bibliographically approved
Bidleman, T., Andersson, A., Brorström-Lundén, E., Brugel, S., Ericson, L., Hansson, K. & Tysklind, M. (2023). Halomethoxybenzenes in air of the Nordic region. Environmental Science and Ecotechnology, 13, Article ID 100209.
Open this publication in new window or tab >>Halomethoxybenzenes in air of the Nordic region
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2023 (English)In: Environmental Science and Ecotechnology, ISSN 2666-4984, Vol. 13, article id 100209Article in journal (Refereed) Published
Abstract [en]

Halomethoxybenzenes (HMBs) are a group of compounds with natural and anthropogenic origins. Here we extend a 2002–2015 survey of bromoanisoles (BAs) in the air and precipitation at Råö on the Swedish west coast and Pallas in Subarctic Finland. New BAs data are reported for 2018 and 2019 and chlorinated HMBs are included for these and some previous years: drosophilin A methyl ether (DAME: 1,2,4,5-tetrachloro-3,6-dimethoxybenzene), tetrachloroveratrole (TeCV: 1,2,3,4-tetrachloro-5,6-dimethoxybenzene), and pentachloroanisole (PeCA). The order of abundance of HMBs at Råö was ΣBAs > DAME > TeCV > PeCA, whereas at Pallas the order of abundance was DAME > ΣBAs > TeCA > PeCA. The lower abundance of BAs at Pallas reflects its inland location, away from direct marine influence. Clausius-Clapeyron (CC) plots of log partial pressure (Pair)/Pa versus 1/T suggested distant transport at both sites for PeCA and local exchange for DAME and TeCV. BAs were dominated by distant transport at Pallas and by both local and distant sources at Råö. Relationships between air and precipitation concentrations were examined by scavenging ratios, SR = (ng m−3)precip/(ng m−3)air. SRs were higher at Pallas than Råö due to greater Henry's law partitioning of gaseous compounds into precipitation at colder temperatures. DAME is produced by terrestrial fungi. We screened 19 fungal species from Swedish forests and found seven of them contained 0.01–3.8 mg DAME per kg fresh weight. We suggest that the volatilization of DAME from fungi and forest litter containing fungal mycelia may contribute to atmospheric levels at both sites.

Place, publisher, year, edition, pages
Elsevier, 2023
Keywords
halomethoxybenzenes (HMBs), bromoanisoles (BAs), drosophilin A methyl ether (DAME), tetrachloroveratrole (TeCV), atmospheric transport, sources
National Category
Natural Sciences
Research subject
environmental science
Identifiers
urn:nbn:se:umu:diva-201161 (URN)10.1016/j.ese.2022.100209 (DOI)000974152400001 ()2-s2.0-85142417471 (Scopus ID)
Projects
EcoChange
Funder
Swedish Research Council FormasEcosystem dynamics in the Baltic Sea in a changing climate perspective - ECOCHANGE
Available from: 2022-11-22 Created: 2022-11-22 Last updated: 2024-01-23Bibliographically approved
Qi, J., Wang, X., Fan, L., Gong, S., Wang, X., Wang, C., . . . Wang, X. (2023). Levels, distribution, childhood exposure assessment, and influencing factors of polybrominated diphenyl ethers (PBDEs) in household dust from nine cities in China. Science of the Total Environment, 874, Article ID 162612.
Open this publication in new window or tab >>Levels, distribution, childhood exposure assessment, and influencing factors of polybrominated diphenyl ethers (PBDEs) in household dust from nine cities in China
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2023 (English)In: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 874, article id 162612Article in journal (Refereed) Published
Abstract [en]

Household dust is an important source of premature exposure to polybrominated diphenyl ethers (PBDEs), especially for children. In this onsite study, 246 dust samples were collected from 224 households in nine Chinese cities during 2018–2019. Questionnaires were administered to explore the association between household-related information and PBDEs in household dust. The median concentration of Σ12PBDEs in household dust from 9 cities was 138 ng/g (94–227 ng/g), with the arithmetic mean of 240 ± 401 ng/g. Among the nine cities, the highest median concentration of Σ12PBDEs in household dust was found in Mianyang (295.57 ng/g), while the lowest was found in Wuxi (23.15 ng/g). BDE-71 was the most dominant congener, ranging from 42.08 % to 98.15 % of the 12 PBDE congeners among 9 cities. Three potential sources for the indoor environment were Penta-BDE, Octa-BDE commercial products, and photolytic bromine from Deca-BDEs based on the largest contribution (81.24 %). Under the moderate exposure scenario, the exposure levels through ingestion and dermal absorption for children were 7.30 × 10−1 ng/kg BW/day and 3.26 × 10−2 ng/kg BW/day, respectively. Temperature, CO2, years of residence, income, family size, household size, use of computers, heating, use of insecticide, and use of humidifiers were influential factors for PBDE concentrations in household dust. Based on the evidence of the correlation between PBDEs and these household parameters, it can be applied to reduce PBDE concentrations in household dust, which is a basis for controlling PBDEs pollution in Chinese households and protecting population health.

Place, publisher, year, edition, pages
Elsevier, 2023
Keywords
PBDEs, Household dust, Source analysis, Childhood exposure, Influencing factors, China
National Category
Environmental Sciences
Identifiers
urn:nbn:se:umu:diva-205545 (URN)10.1016/j.scitotenv.2023.162612 (DOI)000961777300001 ()36871734 (PubMedID)2-s2.0-85149444721 (Scopus ID)
Available from: 2023-03-08 Created: 2023-03-08 Last updated: 2023-09-05Bibliographically approved
Wang, X., Wang, X., Qi, J., Gong, S., Wang, C., Li, L., . . . Wang, X. (2023). Levels, distribution, sources and children health risk of PAHs in residential dust: A multi-city study in China. Science of the Total Environment, 862, Article ID 160760.
Open this publication in new window or tab >>Levels, distribution, sources and children health risk of PAHs in residential dust: A multi-city study in China
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2023 (English)In: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 862, article id 160760Article in journal (Refereed) Published
Abstract [en]

Background: Polycyclic aromatic hydrocarbons (PAHs) are typical residential pollutants mainly from biofuel combustion that impose inevitable risk to children. The PAHs in residential dust is universal in most Chinese households with an obvious public health concern.

Methods: In this observational study, a total of 235 residential dust samples from 8 Chinese cities (Panjin, Shijiazhuang, Lanzhou, Luoyang, Xi'an, Wuxi, Mianyang, and Shenzhen) were collected from April 2018 to March 2019, which were extracted and analyzed for 16 priority PAHs by HPLC/FD-UV. Diagnostic ratios, hierarchical clustering analysis and principal component analysis were applied simultaneously for source apportionments. Incremental lifetime cancer risk was employed to estimate children's health risks based on the assumed exposure scenarios. Spearman correlation, Mann-Whitney U test, Kruskal-Wallis H test and Partial Least Squares were used to screen the factors affecting the concentration of PAHs in residential dust.

Results: The median concentration of ∑16PAHs in residential dust from 8 cities was 44.11 μg/g (0.04 - 355.79 μg/g). ∑16PAHs were found both higher in dust samples in heating season and from downwind households only in Mianyang (p < 0.05). The leading two sources of PAHs were combustion processes and automobile exhaust emissions based on four principal components that accounted for 74.29 % of the total variance. Indoor air environmental factors, household characteristics, and residents' behavioral lifestyles may be the influencing factors of residential dust PAHs. The carcinogenic risk of children aged 0 - 5 years, under the moderate exposure level of PAHs in residential dust, exceeded the acceptable level (10−5 - 10−4 for dermal contact and 10−6 - 10−5 for ingestion).

Conclusions: There was serious PAHs pollution in residential dust under actual living conditions in eight cities across China. More evidence-based measures were needed to control PAHs pollution to safeguard children's health according to appointed sources and influencing factors in residential dust.

Place, publisher, year, edition, pages
Elsevier, 2023
Keywords
Polycyclic aromatic hydrocarbons, Residential dust, Chinese children, Distribution, Sources, Health risk assessment
National Category
Occupational Health and Environmental Health
Identifiers
urn:nbn:se:umu:diva-203466 (URN)10.1016/j.scitotenv.2022.160760 (DOI)000901802000001 ()36513232 (PubMedID)2-s2.0-85143804585 (Scopus ID)
Available from: 2023-01-18 Created: 2023-01-18 Last updated: 2023-09-05Bibliographically approved
Andersson, A., Grinienė, E., Berglund, Å. M. M., Brugel, S., Gorokhova, E., Figueroa, D., . . . Tysklind, M. (2023). Microbial food web changes induced by terrestrial organic matter and elevated temperature in the coastal northern Baltic Sea. Frontiers in Marine Science, 10, Article ID 1170054.
Open this publication in new window or tab >>Microbial food web changes induced by terrestrial organic matter and elevated temperature in the coastal northern Baltic Sea
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2023 (English)In: Frontiers in Marine Science, E-ISSN 2296-7745, Vol. 10, article id 1170054Article in journal (Refereed) Published
Abstract [en]

Climate change has been projected to cause increased temperature and amplified inflows of terrestrial organic matter to coastal areas in northern Europe. Consequently, changes at the base of the food web favoring heterotrophic bacteria over phytoplankton are expected, affecting the food web structure. We tested this hypothesis using an outdoor shallow mesocosm system in the northern Baltic Sea in early summer, where the effects of increased temperature (+ 3°C) and terrestrial matter inputs were studied following the system dynamics and conducting grazing experiments. Juvenile perch constituted the highest trophic level in the system, which exerted strong predation on the zooplankton community. Perch subsequently released the microbial food web from heavy grazing by mesozooplankton. Addition of terrestrial matter had a stronger effect on the microbial food web than the temperature increase, because terrestrial organic matter and accompanying nutrients promoted both heterotrophic bacterial production and phytoplankton primary production. Moreover, due to the shallow water column in the experiment, terrestrial matter addition did not reduce the light below the photosynthesis saturation level, and in these conditions, the net-autotrophy was strengthened by terrestrial matter enrichment. In combination with elevated temperature, the terrestrial matter addition effects were intensified, further shifting the size distribution of the microbial food web base from picoplankton to microphytoplankton. These changes up the food web led to increase in the biomass and proportion of large-sized ciliates (>60 µm) and rotifers. Despite the shifts in the microbial food web size structure, grazing experiments suggested that the pathway from picoplankton to nano- and microzooplankton constituted the major energy flow in all treatments. The study implies that the microbial food web compartments in shallow coastal waters will adjust to climate induced increased inputs of terrestrial matter and elevated temperature, and that the major energy path will flow from picoplankton to large-sized ciliates during the summer period.

Place, publisher, year, edition, pages
Frontiers Media S.A., 2023
Keywords
mesocosm experiment, climate change, microbial food web, Baltic Sea, terrestrial matter effects, temperature effect
National Category
Ecology
Identifiers
urn:nbn:se:umu:diva-212872 (URN)10.3389/fmars.2023.1170054 (DOI)2-s2.0-85167351094 (Scopus ID)
Funder
Swedish Institute, 00140/2014Swedish Research Council Formas, 2019/0007Ecosystem dynamics in the Baltic Sea in a changing climate perspective - ECOCHANGE
Available from: 2023-08-14 Created: 2023-08-14 Last updated: 2023-08-18Bibliographically approved
Lohmann, R., Vrana, B., Muir, D., Smedes, F., Sobotka, J., Zeng, E. Y., . . . Wong, C. S. (2023). Passive-sampler-derived PCB and OCP concentrations in the waters of the world: first results from the AQUA-GAPS/MONET network. Environmental Science and Technology, 57(25), 9342-9352
Open this publication in new window or tab >>Passive-sampler-derived PCB and OCP concentrations in the waters of the world: first results from the AQUA-GAPS/MONET network
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2023 (English)In: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 57, no 25, p. 9342-9352Article in journal (Refereed) Published
Abstract [en]

Persistent organic pollutants (POPs) are recognized as pollutants of global concern, but so far, information on the trends of legacy POPs in the waters of the world has been missing due to logistical, analytical, and financial reasons. Passive samplers have emerged as an attractive alternative to active water sampling methods as they accumulate POPs, represent time-weighted average concentrations, and can easily be shipped and deployed. As part of the AQUA-GAPS/MONET, passive samplers were deployed at 40 globally distributed sites between 2016 and 2020, for a total of 21 freshwater and 40 marine deployments. Results from silicone passive samplers showed α-hexachlorocyclohexane (HCH) and γ-HCH displaying the greatest concentrations in the northern latitudes/Arctic Ocean, in stark contrast to the more persistent penta (PeCB)- and hexachlorobenzene (HCB), which approached equilibrium across sampling sites. Geospatial patterns of polychlorinated biphenyl (PCB) aqueous concentrations closely matched original estimates of production and use, implying limited global transport. Positive correlations between log-transformed concentrations of Σ7PCB, ΣDDTs, Σendosulfan, and Σchlordane, but not ΣHCH, and the log of population density (p < 0.05) within 5 and 10 km of the sampling sites also supported limited transport from used sites. These results help to understand the extent of global distribution, and eventually time-trends, of organic pollutants in aquatic systems, such as across freshwaters and oceans. Future deployments will aim to establish time-trends at selected sites while adding to the geographical coverage.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2023
Keywords
passive sampler, polychlorinated biphenyls, hexachlorobenzene, hexachlorocyclohexanes, organochlorine pesticides, cyclodiene pesticides, global fractionation, silicone rubber, long-range transport
National Category
Environmental Sciences Oceanography, Hydrology and Water Resources
Research subject
environmental science
Identifiers
urn:nbn:se:umu:diva-209510 (URN)10.1021/acs.est.3c01866 (DOI)37294896 (PubMedID)2-s2.0-85163797748 (Scopus ID)
Projects
EcoChange
Funder
EU, Horizon 2020, 857560
Available from: 2023-06-10 Created: 2023-06-10 Last updated: 2023-07-17Bibliographically approved
Bidleman, T., Agosta, K., Andersson, A., Brugel, S., Ericson, L., Hansson, K., . . . Tysklind, M. (2023). Sources and pathways of halomethoxybenzenes in northern Baltic estuaries. Frontiers in Marine Science, 10, Article ID 1161065.
Open this publication in new window or tab >>Sources and pathways of halomethoxybenzenes in northern Baltic estuaries
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2023 (English)In: Frontiers in Marine Science, E-ISSN 2296-7745, Vol. 10, article id 1161065Article in journal (Refereed) Published
Abstract [en]

Introduction: Thousands of halogenated natural products (HNPs) are generated in the ocean and on land. A subset of these, halomethoxybenzenes (HMBs), are released from both natural and anthropogenic sources. Here we consider: 1. Brominated anisoles (BAs), transformation products of bromophenols. 2. Drosophilin A methyl ether (DAME: 1,2,4,5-tetrachloro-3,6-dimethoxybenzene), a secondary metabolite of terrestrial fungi. 3. Tetrachloroveratrole (TeCV: 1,2,3,4-tetrachloro-5,6-dimethoxybenzene), a lignin byproduct found in bleached kraft mill effluent. 4. Pentachloroanisole (PeCA), a metabolite of the wood preservative pentachlorophenol.

Methods: We examined several ecosystem compartments to determine sources and exchange processes for these HMBs: air, precipitation, rivers, forest fungi and litter, and water from northern Baltic estuaries and offshore. Samples were analyzed for HMBs by capillary gas chromatography – quadrupole mass spectrometry.

Results and discussion: All four types of HMBs were found in air, and BAs, DAME and TeCV were also present in precipitation. BAs and DAME were common in rivers and estuaries, whereas TeCV was low and PeCA was below detection. DAME was identified in several species of fungi and in forest litter; TeCV was occasionally present, but BAs and PeCA were below detection. Concentrations of BAs were higher in estuaries than in rivers or offshore waters, showing that estuaries are hot spots for production. BAs were negatively or not correlated with chlorophyll-a, suggesting contribution by heterotrophic bacteria as well as known production by phytoplankton and macroalgae. DAME was negatively or not correlated with BAs and did not appear to be produced in the estuaries; fungi and forest litter containing fungal mycelia are suggested as sources. HMBs volatilize from sea and land, disperse through the atmosphere, and return via precipitation and rivers. Production and biogeochemical cycles are influenced by climate change and we suggest BAs and DAME for following partitioning and exchange processes.

Place, publisher, year, edition, pages
Frontiers Media S.A., 2023
Keywords
Halogenated natural products (HNPs), halomethoxybenzenes (HMBs), atmospheric and riverine transport, Baltic Sea, estuaries
National Category
Environmental Sciences Geochemistry
Research subject
environmental science
Identifiers
urn:nbn:se:umu:diva-208250 (URN)10.3389/fmars.2023.1161065 (DOI)000992356400001 ()2-s2.0-85159934718 (Scopus ID)
Projects
EcoChange
Funder
Ecosystem dynamics in the Baltic Sea in a changing climate perspective - ECOCHANGE
Available from: 2023-05-12 Created: 2023-05-12 Last updated: 2023-06-07Bibliographically approved
Shanmugam, K., Gadhamshetty, V., Tysklind, M., Bhattacharyya, D. & Upadhyayula, V. K. (2022). A sustainable performance assessment framework for circular management of municipal wastewater treatment plants. Journal of Cleaner Production, 339, Article ID 130657.
Open this publication in new window or tab >>A sustainable performance assessment framework for circular management of municipal wastewater treatment plants
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2022 (English)In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 339, article id 130657Article in journal (Refereed) Published
Abstract [en]

Municipal wastewater treatment plants (WWTPs) could become valuable contributors to a circular economy by implementing the 3R principles (reduce, reuse, and recycle). While reducing the pollution load of sewage is the primary objective of a WWTP, this process generates several potentially valuable byproducts including treated effluent, biogas, and sludge. The effluent can be reused in various end use applications and biogas can be reused as a fuel (for electricity generation, transportation, and cooking) or a chemical feedstock. The sludge can either be directly recycled as soil conditioner or via thermochemical/biochemical processing routes to recover material (e.g., hydrochar), energy (e.g., heat, and syngas), and resource value (phosphorus). This work presents a five-layered assessment framework for quantitatively evaluating the sustainable value of municipal WWTPs by using life cycle assessment (LCA) and life cycle costing assessment (LCCA) tools. In addition, indicators reflecting potential benefits to stakeholders and society arising from investments into municipal WWTPs such as the private return on investment (PROI) and the environmental externality costs to investment ratio (EECIR). The framework is validated in a hypothetical case study where the sustainable value of a circularly managed municipal WWTP is evaluated in situations involving multiple byproduct utilization pathways. Four future circular options (FCOs) are examined for a 50,000 m3/d capacity WWTP treating sewage up to tertiary standards. The FCOs mainly differ in terms of how biogas is reused (to meet the WWTP's internal energy demands, as cooking fuel, or as fuel for city buses after upgrading) and how sludge is recycled (as soil conditioner or by producing hydrochar pellets for electricity generation). The FCO in which treated effluent is reused in industry, biogas is used as cooking fuel, and sludge is used as a soil conditioner provides the greatest sustainable value (i.e., the lowest private costs and environmental externality costs (EEC) together with high revenues), the highest PROI, and the lowest EECIR. The strengths and limitations of the proposed assessment framework are also discussed.

Place, publisher, year, edition, pages
Elsevier, 2022
Keywords
Wastewater treatment plants, Circular centric viewpoint, Layered assessment framework, Environmental performance, Total cost assessment, Sustainable value case study
National Category
Environmental Sciences
Identifiers
urn:nbn:se:umu:diva-192181 (URN)10.1016/j.jclepro.2022.130657 (DOI)000819422500004 ()2-s2.0-85123848418 (Scopus ID)
Funder
Bio4Energy
Available from: 2022-02-03 Created: 2022-02-03 Last updated: 2023-09-05Bibliographically approved
Projects
Melanin pigment as a novel trapping and biomonitoring tool for pharmaceutical drugs in fish [2007-01542_Formas]; Uppsala UniversityUnderstanding the possible re-activation of high priority contaminants release from pulp fibre sediments in the northern Baltic Sea (REACT) [2012-2090_Formas]; Umeå UniversityTRANSFORMERS - Integrated biomass production using Swedish microorganisms, local wastewaters and flue gases [2015-92_Formas]; Umeå UniversityInfluence of an invasive polychaete on contaminant transport in the Gulf of Bothnia [2017-05764_VR]; Umeå University
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-8709-6970

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