Environmental Advances最新文献

{"title":"Exploring the relationship between land-use and pesticides in freshwater ecosystem: A case study of the Araguaia River Basin, Brazil","authors":"Dilermando Pereira Lima-Junior ,&nbsp;Luciano B. Lima ,&nbsp;Cleide Carnicer ,&nbsp;Renato Zanella ,&nbsp;Osmar Damian Prestes ,&nbsp;Luana Floriano ,&nbsp;Paulo De Marco Júnior","doi":"10.1016/j.envadv.2024.100497","DOIUrl":"10.1016/j.envadv.2024.100497","url":null,"abstract":"<div><p>Freshwater aquatic ecosystems are vulnerable to human activities within their surroundings, presenting a concerning scenario for aquatic organisms and human subsistence. Therefore, understanding the occurrence of pesticide contamination is a necessary condition to safeguard aquatic biodiversity and human health. We analysed the pesticide residues in water samples, using the solid-phase extraction (SPE) technique and determination by ultra performance liquid chromatography coupled with tandem mass spectrometry (UPLC‒MS/MS). We also we investigated whether land use influences water contamination by pesticides in the middle and upper Araguaia River basin, situated in the central region of Brazil in the Cerrado biome. We evaluated the effect of land use and land cover type on pesticide occurrence in nine subbasins using mixed linear models. We registered the occurrence of pesticides in all subbasins. After water analysis a total of eight pesticides were found: atrazine, carbendazim, cyanazine, imidacloprid, 2,4-D, clomazone, chlorpyrifos-ethyl, and imazalil. Atrazine and carbendazim were detected during both sampling years. The active ingredient atrazine and clomazone were registered in all studied subbasins, with concentrations ranged from 0.006–0.207 µg L⁻¹ and 0.183–0.373 µg L⁻¹, respectively. There were no significant relationships observed between the number of pesticides and the type of land use and land cover, a result possibly related to the short sampling period, as these pesticides are largely used for fungi and insect control in agricultural areas. The presence of pesticides in the water may have potentially detrimental effects on aquatic biodiversity because sampled pesticides have been associated with anomalies in ontogenetic development, diseases, and mortality in organisms. Based on European legislation, it was evident that most of the subbasins had pesticide concentrations in the water exceeding the safety levels for human consumption. Thus, it is crucial for Brazilian legislation to establish maximum limits for pesticide concentrations in water to ensure safe drinking water for the Brazilian population. Additionally, a permanent monitoring system should be established to understand contamination trends in this basin and to take appropriate actions to mitigate adverse impacts.</p></div>","PeriodicalId":34473,"journal":{"name":"Environmental Advances","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666765724000152/pdfft?md5=6ffe31b5e78080d015c1ef391dc574ab&pid=1-s2.0-S2666765724000152-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139822378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of wildfires on air quality in Kathmandu, Nepal","authors":"Sajesh Kuikel ,&nbsp;Binod Pokharel ,&nbsp;Nawraj Bhattarai","doi":"10.1016/j.envadv.2024.100493","DOIUrl":"https://doi.org/10.1016/j.envadv.2024.100493","url":null,"abstract":"<div><p>Air pollution spikes in the central Himalayas' southern regions, including Nepal and northern India, occur mainly from wildfires during March to May. Despite being a significant contributor to pre-monsoon pollution, wildfire smoke remains under-researched. This study used multiple datasets and trajectory analysis to examine hazardous air pollution levels in Nepal's Kathmandu Valley from 2018-2022. It found 47 days exceeding the daily PM2.5 limit of 100 μg/m³, peaking at 305 μg/m³. The pollution was largely due to wildfire smoke from neighboring and transboundary areas, with a strong correlation between active fire counts and pollution levels. The correlation peaked at 0.89 (p&lt;0.05) when lagged by two days during high fire years, like 2021, highlighting the valley's vulnerability due to its bowl-shaped structure. Our findings can inform legislation to mitigate wildfire-induced air pollution, which impacts both public health and the economy.</p></div>","PeriodicalId":34473,"journal":{"name":"Environmental Advances","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666765724000115/pdfft?md5=4ed5e96fa540a1a7d3bfec3e925a4ac8&pid=1-s2.0-S2666765724000115-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139725778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seasonal patterns in trace elements assessed in toenails","authors":"Kaitlyn M. Wojcik ,&nbsp;Ann Von Holle ,&nbsp;Katie M. O'Brien ,&nbsp;Alexandra J. White ,&nbsp;Margaret R. Karagas ,&nbsp;Keith E. Levine ,&nbsp;Brian P. Jackson ,&nbsp;Clarice R. Weinberg","doi":"10.1016/j.envadv.2024.100496","DOIUrl":"https://doi.org/10.1016/j.envadv.2024.100496","url":null,"abstract":"<div><h3>Background</h3><p>Seasonal patterns in measured exposure biomarkers can cause measurement error in epidemiological studies. There is little research about the seasonality of metals and trace elements when assessed in toenail samples. Adjusting for such patterns in models for estimating associations between long-term exposures and health outcomes can potentially improve precision and reduce bias.</p></div><div><h3>Objectives</h3><p>Assess and describe seasonal patterns in toenail measurements of trace elements.</p></div><div><h3>Methods</h3><p>The Sister Study enrolled women residing in the US, including Puerto Rico, whose sister had been diagnosed with breast cancer. At the time of enrollment, participants removed nail polish and collected their toenail clippings, which were cleaned before analysis. We considered the following elements: iron, vanadium, aluminum, chromium, manganese, cobalt, nickel, copper, zinc, arsenic, selenium, molybdenum, cadmium, tin, antimony, mercury, and lead. For two subsamples of the cohort, we fit trigonometric regression models with toenail element measures as the outcome, using sine and cosine functions of the collection day (transformed to an angle) to capture seasonal patterns. These models can estimate the amplitude and timing of the peaks in measures. We evaluated the evidence for a seasonal effect by comparing for each measured element the trigonometric model to a model that was constant across time.</p></div><div><h3>Results</h3><p>There was a seasonal trend in toenail element concentration for iron, aluminum, vanadium, chromium, manganese, cobalt, arsenic, molybdenum, cadmium, tin, and lead, all of which peaked near mid-August. Seasonal patterns were concordant across two non-overlapping samples of women, analyzed in different labs.</p></div><div><h3>Discussion</h3><p>Given the evidence supporting seasonal patterns for 11 of the 17 elements measured in toenails, correcting for seasonality of toenail levels of those trace elements in models estimating the association between those exposures and health outcomes is important. The basis for higher concentrations in toenails collected during the summer remains unknown.</p></div>","PeriodicalId":34473,"journal":{"name":"Environmental Advances","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666765724000140/pdfft?md5=f4ef1ba005ba2a1fc73698a521146eee&pid=1-s2.0-S2666765724000140-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139700222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A pan-Canadian calibration of micro-X-ray fluorescence core scanning data for prediction of sediment elemental concentrations","authors":"David R. Zilkey ,&nbsp;Alexandre Baud ,&nbsp;Pierre Francus ,&nbsp;Dermot Antoniades ,&nbsp;Irene Gregory-Eaves","doi":"10.1016/j.envadv.2024.100495","DOIUrl":"https://doi.org/10.1016/j.envadv.2024.100495","url":null,"abstract":"<div><p>Sediment geochemistry is one lens through which lake sediments are studied to reconstruct local and regional environmental processes. The measurement of sediment elemental composition has historically relied on expensive and destructive methods that limit the spatial and temporal scale of study. Micro-X-ray fluorescence (µXRF) core scanning offers a non-destructive, high-resolution alternative, but its results (i.e., intensity expressed as counts per second) are considered semi-quantitative and comparison among sites requires calibration. Calibration methods are emerging, although they are not yet widely employed and require further assessment of their efficacy. Using 135 sediment samples from 48 lakes across Canada, we assessed the congruence between µXRF and conventionally measured element compositions with various normalization and calibration techniques. Normalization of µXRF data to common proxies (e.g., Ca, Si, Ti, coherence:incoherence ratio, and total counts per second) often improved correlations between µXRF and conventional data, but increases were modest and not consistent for all elements. Our results suggest that µXRF normalization techniques should be applied cautiously, as no proxy represents a “one-size-fits-all” solution. The performance of multivariate log-ratio calibration (MLC) was more consistent, yielding moderate to strong improvement of the correlations between reference and predicted element concentrations. Random forest regression models outperformed partial least squares regression models for almost all elements. MLC may be applied where knowledge of elemental concentration is of great importance, or when comparing across multiple sites with diverse sediment geochemistries. Overall, our results reinforce uncalibrated µXRF core scanning as a strong investigative tool for measuring sediment geochemistry. Although calibrated µXRF data shows promise, conventional methods for measuring sediment geochemistry are still necessary for comparing element concentrations with sediment quality guidelines.</p></div>","PeriodicalId":34473,"journal":{"name":"Environmental Advances","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666765724000139/pdfft?md5=6f5ee7a778759684969fe052f675c75a&pid=1-s2.0-S2666765724000139-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139709619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Plastics and other extraneous matter in municipal solid waste compost: A systematic review of sources, occurrence, implications, and fate in amended soils","authors":"Francis Okori ,&nbsp;Jakob Lederer ,&nbsp;Allan John Komakech ,&nbsp;Therese Schwarzböck ,&nbsp;Johann Fellner","doi":"10.1016/j.envadv.2024.100494","DOIUrl":"https://doi.org/10.1016/j.envadv.2024.100494","url":null,"abstract":"<div><p>Municipal solid waste (MSW) composting is rapidly growing globally as a sustainable approach to valorize the organic fraction of municipal solid waste (OFMSW) into compost for agricultural use. However, MSW compost use in agriculture is threatened by physical contaminants, mainly plastics, glass, metals, and stones in the compost, exceeding the legal thresholds in some cases. This study comprehensively reviews the literature on various physical contaminants in MSW compost, focusing on sources, occurrence, environmental implications, and fate in amended soils. The review shows that physical contaminants in MSW compost are highly heterogeneous depending on waste origin, source separation, and sorting and sieving practices before and after composting. Plastics are the most widely occurring and abundant physical contaminant in MSW compost, reaching up to 15,300 mg/kg in compost, capable of inputting up to 536 kg plastics/ha/year in amended soils. Glass, stones, and metals also regularly occur in MSW compost, reaching up to 17.2%, 18.2%, and 1.5% of the compost mass respectively. Repeated application of contaminated compost increases physical contaminant accumulation in amended soils, severely impacting the soil's physical, chemical, and biological performance. Synthetic plastics in compost-amended soils tend to have a long residence time, slowly degrading and releasing small-sized plastic particles and their metabolites. Further, they may be transported from the point of application by biotic or abiotic agents, posing secondary pollution effects. Microplastics (MPs) are the most significant emerging physical contaminant in MSW compost, and present detection challenges and regulatory laxity in compost marketing. The strategies to mitigate physical contaminants in MSW compost include proper biowaste source separation, improved biowaste separation and screening before and after composting, regulatory adherence and monitoring of contaminants in compost, and the adoption of compostable biodegradable plastics in MSW biowaste collection.</p></div>","PeriodicalId":34473,"journal":{"name":"Environmental Advances","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666765724000127/pdfft?md5=dea0bf310be11d306331376eec015427&pid=1-s2.0-S2666765724000127-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139725810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radiological risk assessment in the Asian green mussel (Perna viridis) and the Thai seafood consumers","authors":"Alongkon Srilerd ,&nbsp;Nipapun Kungskulniti ,&nbsp;Yutthana Tumnoi ,&nbsp;Naowarut Charoenca","doi":"10.1016/j.envadv.2024.100487","DOIUrl":"10.1016/j.envadv.2024.100487","url":null,"abstract":"<div><p>There are several sources of radionuclides to be accidentally and routinely released into the marine ecosystem leading to bioaccumulation of such radionuclides in marine biota in Thailand. Radioactive contamination in local seafood can result in significant health effects via the human food chain. This study aims to estimate radiation doses received by the Asian green mussel (<em>Perna viridis</em>), and the Annual Committed Effective Doses (ACEDs) and Lifetime Cancer Risk (LCR) from ¹³⁷Cs, ²²⁶Ra, ²³²Th, and ⁴⁰K in the mussels via ingestion. The mussels were collected from the offshored shellfish farms in the Gulf of Thailand and the Andaman Sea during wet and dry seasons between 2020 and 2021 for radioactivity measurement using HPGe gamma spectrometry. The results showed that ¹³⁷Cs, ²²⁶Ra, ²³²Th, and ⁴⁰K concentrations in the green mussels ranged from 0.0049 to 0.0623 Bq/kg, 1.86 to 3.67 Bq/kg, 0.34 to 0.62 Bq/kg, and 3.80 to 30.74 Bq/kg, respectively. Radiation dose rates in the shellfish estimated using the ERICA Tool were found to be in a range of 0.50–0.76 µGy/h which were well below the screening value of 10 µGy/h. In addition, the ACEDs ranged between 6.41 and 72.78 µSv/yr which were lower than 300 µSv/yr. While the LCR values estimated in the present study ranging from 3.55 × 10⁻⁶ to 2.82 × 10⁻⁵ did not exceed the recommended value of 10⁻⁴. It could be concluded here that eating the green mussels from the studied areas did not cause any radiological health risk in the Thai seafood consumers. However, future investigations are recommended to be conducted in the green mussels from other locations and in young consumers where higher ACEDs and LCR values were recorded.</p></div>","PeriodicalId":34473,"journal":{"name":"Environmental Advances","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266676572400005X/pdfft?md5=d61c0b1b43b8af7ec593cd5d20f610c5&pid=1-s2.0-S266676572400005X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139639307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of a starch-composite magnetic material modified with polyethyleneimine for enhanced adsorption of diclofenac sodium, methyl orange, Amaranth, and hexavalent chromium","authors":"Jisuan Tan,&nbsp;Lingzhen Kong,&nbsp;Jingbo Fang,&nbsp;Xingtang Liang,&nbsp;Yanzhen Yin","doi":"10.1016/j.envadv.2024.100489","DOIUrl":"https://doi.org/10.1016/j.envadv.2024.100489","url":null,"abstract":"<div><p>This study introduces Magnetic Starch (MAST), an innovative material designed for the efficient and rapid removal of water contaminants. MAST is synthesized by integrating polyethyleneimine and magnetic Fe₃O₄ nanoparticles into a starch composite. It exhibits a saturation magnetization of 7.3 emu/g and a functional surface area of 3.55 m² g⁻¹. MAST's amine group density is 12.03 mmol/g, indicating a strong affinity for pollutants. Notably, MAST demonstrates exceptional adsorption capacities for various hazardous substances, including diclofenac sodium (620.51 mg g⁻¹), methyl orange (470.85 mg g⁻¹), amaranth (193.71 mg g⁻¹), and hexavalent chromium (164.62 mg g⁻¹). Thermodynamic studies reveal that the adsorption process is spontaneous and endothermic, with increased efficiency at higher temperatures, indicating suitability across various thermal conditions. MAST achieves rapid equilibrium within 20 minutes, conforms to pseudo-second-order and Langmuir models, and exhibits selective adsorption in complex matrices. These attributes underscore its potential for broad environmental remediation applications. Furthermore, MAST can be easily separated from water using magnets and retains 60 % of its effectiveness after five usage cycles, endorsing its feasibility for repeated use.</p></div>","PeriodicalId":34473,"journal":{"name":"Environmental Advances","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666765724000073/pdfft?md5=2739de455b72dc8ac443f9263b322361&pid=1-s2.0-S2666765724000073-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139674172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pacific whiteleg shrimps compromize their physiological needs to cope with environmental stress","authors":"Yu Ling Shirly-Lim ,&nbsp;Sharifah Rahmah ,&nbsp;Mazlan Abd Ghaffar ,&nbsp;Li Qun Liang ,&nbsp;Yu Mei Chang ,&nbsp;Yusuf Chisti ,&nbsp;Ming-An Lee ,&nbsp;Hon Jung Liew","doi":"10.1016/j.envadv.2024.100492","DOIUrl":"10.1016/j.envadv.2024.100492","url":null,"abstract":"<div><p>The ongoing climate change is resulting in elevating temperatures and reduced pH levels in the marine environment. This work reports on the interactive effects of these two factors on growth and physiological responses of Pacific whiteleg shrimps (Litopenaeus vannamei), with a very important commercial shrimp specie. The study examines the interactive effects of temperature (28 versus34°C) and pH (6 versus 8) were examined at four combinations: (28°C and pH 8 (N28); 34°C and pH 8 (N34); 28°C and pH 6 (A28); and 34°C and pH 6 (A34), over a 30 days period. A combination of a high temperature and low pH (i.e., A34) was found to impose a high metabolic burden on the shrimp, resulting in an increased food intake and elevated osmorespiration responses relative to control, but no improvement in growth. The A34 stress combination increased ammonia excretion 2-fold relative to control, and increased a 40 % rise in metabolic oxygen uptake. Under A34 stress, glycogen and lipid reserves in both muscle and hepatopancreas were mobilized to support basal metabolic needs, resulting in growth suppression. The combined thermal-pH stress A34 did not affect the calcium and magnesium content of muscle and shell, which are essential minerals for exoskeleton and structural development. Although the shrimp can survive under high temperature-low pH stress conditions, their growth rate was compromised.</p></div>","PeriodicalId":34473,"journal":{"name":"Environmental Advances","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666765724000103/pdfft?md5=231d283de0c9a9754111a78d424f2f95&pid=1-s2.0-S2666765724000103-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139637622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigating mercury in road sediment in Michigan City, Indiana: A new type of environmental pollution record","authors":"Audrey Allen ,&nbsp;Matthew Dietrich ,&nbsp;Claire L. McLeod ,&nbsp;Morgan Gillis ,&nbsp;Kailee Gokey ,&nbsp;Mirielle Fouh Mbindi ,&nbsp;Mark P.S. Krekeler","doi":"10.1016/j.envadv.2024.100483","DOIUrl":"10.1016/j.envadv.2024.100483","url":null,"abstract":"<div><p>Mercury (Hg) is well recognized as a toxic heavy metal known to detrimentally impact the health of humans and wildlife. A common source of Hg pollution is coal combustion emissions associated with energy generation. This study takes the novel approach of using road sediment to assess the presence, distribution, and concentrations of Hg in the environment. Here, the spatial distribution of Hg in road sediment is also evaluated relative to the Northern Indiana Public Service Company (NIPSCO) Generating Station in Michigan City, Indiana, U.S.—a coal-burning power plant. Given that NIPSCO plans to decommission the plant by 2028, this data provides a baseline for evaluating Hg concentrations in the local environment and for future assessment of environmental recovery from legacy pollution and/or impacts of pollution redistribution associated with site redevelopment. Our data reveal an average concentration of 6.8 (µg/kg) of Hg and a range from 1.5 µg/kg to 28.5 µg/kg in road sediment samples (<em>n</em> = 42). Across the ∼53 km² study area, the overall distribution of Hg is patchy and irregular spatially, however, higher concentrations are more proximal to the coal plant and are generally consistent with prevailing wind directions. Other significant Hg inputs are present in the region although, specifically two major areas of steel manufacturing located to the west of Michigan City and broadening the scope of sampling may be an essential next step. However, this investigation demonstrates that road sediment may be an effective medium for investigating Hg pollution in the environment globally.</p></div>","PeriodicalId":34473,"journal":{"name":"Environmental Advances","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666765724000012/pdfft?md5=1d8b86e6b4ecbebd52c9e76f529a41bc&pid=1-s2.0-S2666765724000012-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139633476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Disinfection byproduct formation from chlorination of agricultural reuse water sources","authors":"Julia C. Czarnecki,&nbsp;Benjamin Manoli,&nbsp;Nafis Fuad,&nbsp;Timothy M. Vadas","doi":"10.1016/j.envadv.2024.100488","DOIUrl":"10.1016/j.envadv.2024.100488","url":null,"abstract":"<div><p>Treatment of reuse water sources is critical for achieving proper water quality for the desired end-use. Disinfection is often achieved through chlorination, but this leads to the formation of toxic disinfection byproducts (DBPs). During reuse for agricultural purposes, it is important to reduce the potential for contamination of food crops and thereby minimize DBP production from treatment processes. This study evaluates the DBP formation potential from various reuse water sources under different reaction conditions to determine the implications of chlorination-derived DBPs for agricultural water reuse. Chlorination experiments were conducted on wastewater, stormwater, and farm lagoon water at pH 5, 6, 7, and with Br⁻ addition. DBP concentrations were then evaluated in conjunction with initial concentrations of dissolved organic carbon (DOC), total nitrogen (TN), initial bromide, and specific UV-absorbance (SUVA). The most abundantly formed DBP class for nearly all sources was trihalomethanes (THMs), followed by nitrogenous DBPs (N-DBPs). Despite a high DOC concentration of 37.8 mg/L, lagoon source 2 only formed a total of 4.15 µg/L DBPs, likely due to oxidation of the inorganic nitrogen (54.8 mg/L TN) inhibiting DBP formation. Stormwater sources (DOC range 3.0-15.3 mg/L) had the highest DBP formation potential, with chloroform concentrations reaching up to 92 µg/L. Waters with lower DOC, TN and bromide and at lower pH ranges had less DBP formation potential for the compounds evaluated in this study. While SUVA did not prove to be a strong indicator of DBP formation, with increasing Br/UVA, there was an exponential increase in bromine substitution factor for THMs (R²=0.927, p &lt; 0.0001) across all reuse sources. Toxicity-weighted DBP concentrations were also evaluated for all sources. Waters with higher TN and bromide content produced more toxic N-DBPs, mainly dichloroacetonitrile and dibromoacetonitrile.</p></div>","PeriodicalId":34473,"journal":{"name":"Environmental Advances","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666765724000061/pdfft?md5=bec349ca4ea7a1c287a133ed12da2e25&pid=1-s2.0-S2666765724000061-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139632196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}