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https://www.readbyqxmd.com/read/28743008/wastewater-contamination-in-antarctic-melt-water-streams-evidenced-by-virological-and-organic-molecular-markers
#1
L F L Tort, K Iglesias, C Bueno, A Lizasoain, M Salvo, J Cristina, N Kandratavicius, L Pérez, R Figueira, M C Bícego, S Taniguchi, N Venturini, E Brugnoli, R Colina, M Victoria
Human activities in the Antarctica including tourism and scientific research have been raised substantially in the last century with the concomitant impact on the Antarctic ecosystems through the release of wastewater mainly from different scientific stations activities. The aim of this study was to assess the wastewater contamination of surface waters and sediments of three melt-water streams (11 sites) by leaking septic tanks located in the vicinity of the Uruguayan Scientific Station in the Fildes Peninsula, King George Island, Antarctica, during summer 2015...
July 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28742338/advanced-materials-technologies-and-complex-systems-analyses-emerging-opportunities-to-enhance-urban-water-security
#2
Katherine R Zodrow, Qilin Li, Regina M Buono, Wei Chen, Glenn Daigger, Leonardo Duenas-Osorio, Menachem Elimelech, Xia Huang, Guibin Jiang, Jae-Hong Kim, Bruce E Logan, David L Sedlak, Paul Westerhoff, Pedro J J Alvarez
Innovation in urban water systems is required to address the increasing demand for clean water due to population growth and aggravated water stress caused by water pollution, aging infrastructure, and climate change. Advances in materials science, modular water treatment technologies, and complex systems analyses, coupled with the drive to minimize the energy and environmental footprints of cities, provide new opportunities to ensure a resilient and safe water supply. We present a vision for enhancing efficiency and resiliency of urban water systems and discuss approaches and research needs for overcoming associated implementation challenges...
July 25, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28741204/remarks-on-the-current-quality-of-groundwater-in-vietnam
#3
EDITORIAL
Tran Le Luu
This paper reviews the current quality of groundwater in Vietnam. In Vietnam, groundwater is obtained primarily from tubewells, which have high concentrations of pollutants such as As, Fe, Mn, and NH4(+). In the areas where groundwater tests were conducted, arsenic levels ranged from 0.1-3050 μg/L, which substantially exceed the standard of 10 μg/L which has been established by the WHO. Contamination sources are distributed over a large area from the Red River Delta in the north to the Mekong River Delta in the south, putting as many as ten million people at risk of adverse health effects...
July 24, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28739450/controlled-release-for-crop-and-wood-protection-recent-progress-toward-sustainable-and-safe-nanostructured-biocidal-systems
#4
REVIEW
Bruno D Mattos, Blaise L Tardy, Washington L E Magalhães, Orlando J Rojas
We review biocide delivery systems (BDS), which are designed to deter or control harmful organisms that damage agricultural crops, forests and forest products. This is a timely topic, given the growing socio-economical concerns that have motivated major developments in sustainable BDS. Associated designs aim at improving or replacing traditional systems, which often consist of biocides with extreme behavior as far as their solubility in water. This includes those that compromise or pollute soil and water (highly soluble or volatile biocides) or those that present low bioavailability (poorly soluble biocides)...
July 21, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28739294/polycyclic-aromatic-hydrocarbons-and-female-reproductive-health-a-scoping-review
#5
REVIEW
Ashley L Bolden, Johanna R Rochester, Kim Schultz, Carol F Kwiatkowski
Polycyclic aromatic hydrocarbons (PAHs) are a class of common persistent environmental pollutants found in water, air, soil, and plants and can be released by natural sources. However, the majority of atmospheric PAHs are from vehicular emissions, coal-burning plants, and the production and use of petroleum-derived substances. Exposure to PAHs has been implicated in cancer and other diseases, including reproductive disorders. This scoping review is a preliminary step that explores the utility and feasibility of completing a systematic review evaluating the effect of PAHs on female reproduction...
July 21, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28739107/hydrostatic-pressure-and-the-experimental-toxicology-of-marine-fishes-the-elephant-in-the-room
#6
Benjamin Lemaire
Hydrostatic pressure (HP) increases linearly with depth in aquatic environments, so that many fish species routinely experience moderate-to-high HP levels (i.e., from a few to dozens of MPa). Biological effects of this thermodynamic variable are evidenced by a reduced functionality of many biomolecular systems, even in barotolerant and barophilic species. It is likely that environmentally-relevant HP levels (i.e., above atmospheric) could also modulate the responsiveness to and toxic effects of pollutants in fish...
July 21, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28738597/sensitive-detection-of-sulfide-based-on-the-self-assembly-of-fluorescent-silver-nanoclusters-on-the-surface-of-silica-nanospheres
#7
Yehan Yan, Kui Zhang, Huan Yu, Houjuan Zhu, Mingtai Sun, Tasawar Hayat, Ahmed Alsaedi, Suhua Wang
Hydrogen sulfide is a toxic and flammable gaseous pollutant often emitted to air as a by-product of water supply, chemical, petroleum and coal industries. It can be transferred into sulfur dioxide in the air under some meteorologic conditions. Herein, we report a novel ratiometric fluorescence method for hydrogen sulfide based on silver nanoclusters and quantum dots. The silver nanoclusters have been self-assemblied onto the surface of silica spheres, which are embedded with red fluorescent quantum dots, to form a dual-emissive nanohybrid...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738513/mitigation-of-nonpoint-source-pollution-in-rural-areas-from-control-to-synergies-of-multi-ecosystem-services
#8
Yonghong Wu, Junzhuo Liu, Renfang Shen, Bojie Fu
Nonpoint source (NPS) pollution produced by human activities in rural areas has induced excessive nutrient input into surface waters and the decline of water quality. The essence of NPS pollution is the transport of nutrients between soil and water. Traditional NPS pollution control strategies, however, are mainly based on the solid and liquid phases, with little focus on the bio-phase between water and soil. The pollutants produced from NPS can be regarded as a resource if recycled or reused in an appropriate way in the agricultural ecosystem...
July 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28737927/a-facile-non-reactive-hydrogen-peroxide-h2o2-detection-method-enabled-by-ion-chromatography-with-uv-detector
#9
Mingrui Song, Junli Wang, Baiyang Chen, Lei Wang
Hydrogen peroxide (H2O2) is present ubiquitously in natural environment and nowadays widely used in water and wastewater treatment processes for pollutant control. However, current analytical methods for H2O2 inevitably require reactions between H2O2 and other reactants to yield signals, thus likely subjective to interferences of coexisting colored, oxidative, and reductive compounds. In order to overcome these barriers, we herein for the first time propose to analyze H2O2 by ion chromatography (IC) equipped with ultraviolet (UV) detector...
July 24, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28737443/fertirrigation-with-sugarcane-vinasse-foreseeing-potential-impacts-on-soil-and-water-resources-through-vinasse-characterization
#10
Lucas T Fuess, Isabella J Rodrigues, Marcelo L Garcia
This paper reports the characterization of the polluting potential of sugarcane vinasse, the main wastewater from ethanol production. Compositional data from vinasse samples collected from sugarcane biorefineries were used to predict negative effects on the soil, water resources and crops potentially associated with fertirrigation, the primary final destination of vinasse in Brazil. High risks of soil salinization were associated with the land disposal of vinasse, as evidenced by the high levels of total dissolved solids (TDS; >4,000 mg L(-1)) and electrical conductivity (>6...
July 24, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28737160/health-and-environmental-risk-assessment-project-for-bottlenose-dolphins-tursiops-truncatus-from-the-southeastern-usa-ii-environmental-aspects
#11
REVIEW
John S Reif, Adam M Schaefer, Gregory D Bossart, Patricia A Fair
Bottlenose dolphins Tursiops truncatus are the most common apex predators found in coastal and estuarine ecosystems along the southeastern coast of the USA, where these animals are exposed to multiple chemical pollutants and microbial agents. In this review, we summarize the results of investigations of environmental exposures evaluated in 360 free-ranging dolphins between 2003 and 2015. Bottlenose dolphins inhabiting the Indian River Lagoon, Florida (IRL, n = 246), and coastal waters of Charleston, South Carolina (CHS, n = 114), were captured, given comprehensive health examinations, and released as part of a multidisciplinary and multi-institutional study of individual and population health...
July 24, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28736047/health-risk-assessment-as-an-approach-to-manage-an-old-landfill-and-to-propose-integrated-solid-waste-treatment-a-case-study-in-italy
#12
O Paladino, M Massabò
The aim of the present paper is to show how an approach based on human health risk analysis can be used as a decisional tool for the evaluation of impacts on population and for deciding between different waste treatment processes. The situation in which the increasing production of solid wastes cannot be confined in the old existing Municipal Solid Waste landfill (settled in Genoa, Liguria Region, Italy) is used as a case study. Risk assessment for human health due to air, surface water, groundwater and soil contamination is performed in different scenarios for the old landfill and compared with alternative Waste-to-Energy management solutions that consider thermal treatment by gasification of the total waste or gasification of the dry fraction coupled with anaerobic digestion of the wet fraction, plus biogas combustion with or without sludge and bottom ash/slag disposal in the old landfill...
July 20, 2017: Waste Management
https://www.readbyqxmd.com/read/28735468/the-effect-of-water-contamination-and-host-related-factors-on-ectoparasite-load-in-an-insectivorous-bat
#13
Carmi Korine, Shai Pilosof, Amit Gross, Juan B Morales-Malacara, Boris R Krasnov
We examined the effects of sex, age, and reproductive state of the insectivorous bat Pipistrellus kuhlii on the abundance and prevalence of arthropod ectoparasites (Macronyssidae and Cimicidae) in habitats with either sewage-polluted or natural bodies of water, in the Negev Desert, Israel. We chose water pollution as an environmental factor because of the importance of water availability in desert environments, particularly for P. kuhlii, which needs to drink on a daily basis. We predicted that parasite infestation rates would be affected by both environment and demographic cohort of the host...
July 22, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28735436/assessing-differences-in-macrofaunal-assemblages-as-a-factor-of-sieve-mesh-size-distance-between-samples-and-time-of-sampling
#14
Lenaïg G Hemery, Kristin K Politano, Sarah K Henkel
With increasing cascading effects of climate change on the marine environment, as well as pollution and anthropogenic utilization of the seafloor, there is increasing interest in tracking changes to benthic communities. Macrofaunal surveys are traditionally conducted as part of pre-incident environmental assessment studies and post-incident monitoring studies when there is a potential impact to the seafloor. These surveys usually characterize the structure and/or spatiotemporal distribution of macrofaunal assemblages collected with sediment cores; however, many different sampling protocols have been used...
August 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28735238/the-influence-of-heavy-metals-on-toxicogenetic-damage-in-a-brazilian-tropical-river
#15
Leomá A Matos, Ana C S Cunha, Aline A Sousa, Jéssica P R Maranhão, Nathanyel R S Santos, Matheus de M C Gonçalves, Sandra M M de M Dantas, João M de C E Sousa, Ana P Peron, Felipe Cavalcanti Carneiro da Silva, Marcus V O B de Alencar, Md Torequl Islam, Raí Pablo Sousa de Aguiar, Ana A de C Melo-Cavalcante, Claúdia C Bonecker, Horácio F J Junior
Anthropogenic activities in tropical rivers favor the eutrophication process, which causes increased concentration of heavy metals. The presence and bioaccumulation of metals are directly related to the presence of genotoxic damage in aquatic organisms. Thus, we evaluated the presence of heavy metals (Fe, Zn, Cr, Cu and Al) and performed toxicogenetic tests in surface (S) and bottom (B) of water samples of the Poti river (Piaui/Brazil). Cytotoxicity and genotoxicity tests were performed in Allium cepa, and micronucleus (MN) and comet assay were performed in Oreochromis niloticus...
July 19, 2017: Chemosphere
https://www.readbyqxmd.com/read/28735203/grape-stalk-application-for-caffeine-removal-through-adsorption
#16
Rodrigo Portinho, Odivan Zanella, Liliana Amaral Féris
Concern over emerging pollutants presence in water resources is growing, justifying the search for alternative or additional techniques to those applied in conventional water treatment processes. Use of adsorption with agricultural wastes directly as adsorbents or as precursors for activated carbon synthesis is a viable method, combining removal efficiency, low cost and biodegradability of the material applied. This study investigated the employability of grape stalk, a waste from grape industrialization process without effective use, in caffeine removal from aqueous solution...
July 20, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28734996/the-design-of-novel-visible-light-driven-ag-cdo-as-smart-nanocomposite-for-photodegradation-of-different-dye-contaminants
#17
K Saravanakumar, V Muthuraj, M Jeyaraj
In this paper, we report a novel visible light driven Ag/CdO photocatalyst, fabricated for the first time via one pot hydrothermal method and further applied for the photodegradation of two important exemplar water contaminants, Malachite green and Acid Orange 7. The microstructure, composition and optical properties of Ag/CdO nanocomposites were thoroughly investigated by various techniques. Scanning electron microscopy clearly shows that Ag NPs were strongly embedded between the CdO nanoparticles. Among the series of synthesized Ag/CdO nanocomposites, (5%) Ag/CdO nanocomposite possesses enhanced photocatalytic activity...
July 17, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28734967/assessment-of-complex-water-pollution-with-heavy-metals-and-pyrethroid-pesticides-on-transcript-levels-of-metallothionine-and-immune-related-genes
#18
Haneen A Ghazy, Mohamed A S Abdel-Razek, Abeer F El Nahas, Shawky Mahmoud
Alteration of immunological function of an aquatic organism can be used as an indicator for evaluating the direct effect of exposure to pollutants. The aim of this work is to assess the impact of complex water pollution with special reference to Pyrethroid pesticides and heavy metals on mRNA transcript levels of Metallothionine and some immune related genes of Nile tilapia (Oreochromas Niloticus). Residues of six heavy metals and six Pyrethroid were assessed in water as well as fish tissues at three different sites of Lake Burullus, located at Northern Egypt...
July 19, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28734570/spatial-and-temporal-variations-of-heavy-metals-in-marine-sediments-from-liaodong-bay-bohai-sea-in-china
#19
Liang Liu, Lijun Wang, Zhengxian Yang, Yingying Hu, Minghui Ma
An integrated analysis has been carried out using surface sediment monitoring data in order to characterize the spatial distributions and temporal trends of heavy metals within ten years from 2004 to 2013 in the entire Liaodong Bay. Hg, Cd and As were predominant contaminants with their median concentrations of 0.04-0.15, 0.01-0.65, and 1.80-30.3mg/kg respectively. Both areas and levels of Cu and Pb contamination were low. Cd contents exhibited an obvious decreasing trend and As presented a similar law during these 10years...
July 19, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28734371/electrospun-nanofibrous-mercury-filter-efficient-concentration-and-determination-of-trace-mercury-in-water-with-high-sensitivity-and-tunable-dynamic-range
#20
Huaming Wang, Wenyao Huang, Lin Tang, Ying Chen, Ying Zhang, Mengxi Wu, Yi Song, Sheng Wen
Herein, we reported a simple and highly sensitive method for the concentration and determination of trace mercury in water samples based on a novel electropsun nanofibrous mercury filter (ENMF). The method consisted of two simple steps: first, the concentration of mercury on a piece of thiol-containing ENMF; and second, the determination of mercury captured on the ENMF using a direct mercury analyzer (DMA). By changing the volume of water sample, the dynamic range of the method could extend from 0.0025 to 6...
August 22, 2017: Analytica Chimica Acta
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