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https://www.readbyqxmd.com/read/28226246/improvement-of-virus-removal-by-pilot-scale-coagulation-ultrafiltration-process-for-wastewater-reclamation-effect-of-optimization-of-ph-in-secondary-effluent
#1
S Lee, M Ihara, N Yamashita, H Tanaka
Reclaimed water (i.e., reused advanced-treated wastewater) offers an alternative water resource. To reduce the health risks associated with its use, efficient virus removal such as with advanced wastewater treatment processes is important. Virus removal by coagulation followed by ultrafiltration (UF) for the treatment of drinking water has been well examined. But its efficacy in wastewater reclamation purpose using secondary treated effluent (SE) from wastewater treatment plant (WWTP) as feed water is unclear...
February 9, 2017: Water Research
https://www.readbyqxmd.com/read/28185729/application-of-ozonation-for-pharmaceuticals-and-personal-care-products-removal-from-water
#2
REVIEW
João Gomes, Raquel Costa, Rosa M Quinta-Ferreira, Rui C Martins
Due to the shortening on natural water resources, reclaimed wastewater will be an important water supply source. However, suitable technologies must be available to guaranty its proper detoxification with special concern for the emerging pharmaceutical and personal care products that are continuously reaching municipal wastewater treatment plants. While conventional biological systems are not suitable to remove these compounds, ozone, due to its interesting features involving molecular ozone oxidation and the possibility of generating unselective hydroxyl radicals, has a wider range of action on micropollutants removal and water disinfection...
February 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28181800/vanadium-geochemistry-of-oil-sands-fluid-petroleum-coke
#3
Jake A Nesbitt, Matthew B J Lindsay
Vanadium has previously been linked to elevated toxicity of leachates derived from oil sands petroleum coke. However, geochemical controls on V mobility within coke deposits remain poorly constrained. Detailed examinations of porewater and solid-phase V geochemistry were therefore performed on oil sands fluid petroleum coke deposits in Alberta, Canada. Sample collection focused on both active and reclaimed deposits, which contained more than 3 × 10(7) m(3) of fluid petroleum coke. Dissolved V concentrations were highest (up to 3...
February 17, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28146157/identification-of-circo-like-virus-brazil-genomic-sequences-in-raw-sewage-from-the-metropolitan-area-of-s%C3%A3-o-paulo-evidence-of-circulation-two-and-three-years-after-the-first-detection
#4
Silvana Beres Castrignano, Teresa Keico Nagasse-Sugahara, Patrícia Garrafa, Telma Alves Monezi, Karina Medici Barrella, Dolores Ursula Mehnert
BACKGROUND: Two novel viruses named circo-like virus-Brazil (CLV-BR) hs1 and hs2 were previously discovered in a Brazilian human fecal sample through metagenomics. CLV-BR hs1 and hs2 possess a small circular DNA genome encoding a replication initiator protein (Rep), and the two genomes exhibit 92% nucleotide identity with each other. Phylogenetic analysis based on the Rep protein showed that CLV-BRs do not cluster with circoviruses, nanoviruses, geminiviruses or cycloviruses. OBJECTIVES: The aim of this study was to search for CLV-BR genomes in sewage and reclaimed water samples from the metropolitan area of São Paulo, Brazil, to verify whether the first detection of these viruses was an isolated finding...
January 19, 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28139323/photosynthesis-and-aboveground-carbon-allocation-of-two-co-occurring-poplar-species-in-an-urban-brownfield
#5
Diane Radwanski, Frank Gallagher, Dirk W Vanderklein, Karina V R Schäfer
Phytoremediation, a technique used to reclaim heavy metal-contaminated soils, requires an understanding of plant physiological responses to heavy metals. However, the majority of studies documenting heavy metal impact on plant functioning have been performed in laboratory or greenhouse settings. We predicted that increased soil heavy metal concentrations reduce photosynthesis and biomass production in trees growing in metal contaminated soil in a naturally re-vegetated urban brownfield. Leaf gas exchange, leaf carbon and nitrogen concentration, and tree biomass were recorded and compared for Populus deltoides and Populus tremuloides growing in an urban brownfield...
January 27, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28129907/effects-of-residual-disinfectant-on-soil-and-lettuce-crop-irrigated-with-chlorinated-water
#6
A Lonigro, N Montemurro, G Laera
The accidental or continuous release of residual chlorine in water reclaimed for irrigational purposes could compromise the crop yield and increase the load of toxic organo-halogenated compounds, posing additional risks for environment and human health. This study was aimed at assessing the consequences of using chlorinated water for irrigating lettuce crops grown in pots with two different types of soil. The results show that the accumulation of extractable organo-halogenated compounds (EOX) in soil, roots and leaves is directly related to the chlorine concentration in the irrigation water...
January 24, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28128021/drug-product-immobilization-in-recycled-polyethylene-polypropylene-reclaimed-from-municipal-solid-waste-experimental-and-numerical-assessment
#7
Walid Saad, Wael Slika, Zara Mawla, George Saad
Recently, there has been a growing interest in identifying suitable routes for the disposal of pharmaceutical wastes. This study investigates the potential of matrix materials composed of recycled polyethylene/polypropylene reclaimed from municipal solid wastes at immobilizing pharmaceutical solid wastes. Diclofenac (DF) drug product was embedded in boards of recycled plastic material, and leaching in water was assessed at various temperatures. DF concentrations were determined by high performance liquid chromatography and revealed a maximum leachable fraction of 4% under accelerated conditions of 70°C, and less than 0...
January 27, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28117165/methane-emissions-dynamics-from-a-constructed-fen-and-reference-sites-in-the-athabasca-oil-sands-region-alberta
#8
Kimberley R Murray, Natasha Barlow, Maria Strack
Recently, fen construction projects on surface mines in northeastern Alberta have been attempted as a reclamation strategy to reintroduce peatlands into the region where industry disturbs a substantial amount of wetland ecosystems. Knowledge of carbon cycling and greenhouse gas (GHG) dynamics, including methane (CH4), is one way to understand the biogeochemical function of newly constructed fen ecosystems. In this study we monitored CH4 emissions and CH4 pore water concentration, as well as ecological and soil chemistry controls on CH4 emissions and pore water concentration, from a constructed fen...
January 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28110257/acidification-with-nitric-acid-improves-chemical-characteristics-and-reduces-phytotoxicity-of-alkaline-chars
#9
Fernando Fornes, Rosa Maria Belda
Charred organic matter is recently receiving attention for its potential use as soilless growth medium. However, depending on its origin and on the manufacturing technology, it can result toxic for plants. This fact implies that a detoxifying treatment ought to be devised in order to reclaim char in this way. We have studied three materials which combine these factors: two pyrolyzed biochars, one from forest waste (BCH-FW) and another from olive mill waste (BCH-OMW), and one hydrothermally carbonized hydrochar from forest waste (HYD-FW)...
January 19, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28092761/chlorinated-and-ultraviolet-radiation-treated-reclaimed-irrigation-water-is-the-source-of-aeromonas-found-in-vegetables-used-for-human-consumption
#10
Fadua Latif-Eugenín, Roxana Beaz-Hidalgo, Carolina Silvera-Simón, Xavi Fernandez-Cassi, María J Figueras
Wastewater is increasingly being recognized as a key water resource, and reclaimed water (or treated wastewater) is used for irrigating vegetables destined for human consumption. The aim of the present study was to determine the diversity and prevalence of Aeromonas spp. both in reclaimed water used for irrigation and in the three types of vegetables irrigated with that water. Seven of the 11 (63.6%) samples of reclaimed water and all samples of vegetables were positive for the presence of Aeromonas. A total of 216 Aeromonas isolates were genotyped and corresponded to 132 different strains that after identification by sequencing the rpoD gene belonged to 10 different species...
January 13, 2017: Environmental Research
https://www.readbyqxmd.com/read/28091988/genotoxicity-and-cytotoxicity-reduction-of-the-polluted-urban-river-after-ecological-restoration-a-field-scale-study-of-jialu-river-in-northern-china
#11
Jie Sun, Rui Zhang, Long Qin, Haixiao Zhu, Yu Huang, Yingang Xue, Shuqing An, Xianchuan Xie, Aimin Li
To further treat the reclaimed municipal wastewater and rehabilitate the aquatic ecosystem of polluted urban rivers, an 18.5-km field-scale ecological restoration project was constructed along Jialu River, a polluted urban river which receives only reclaimed municipal wastewater from Zhengzhou City without natural upland water dilution. This study investigated the potential efficiency of water quality improvement, as well as genotoxicity and cytotoxicity reduction along the ecological restoration project of this polluted urban river...
January 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28076659/an-empirical-agent-based-model-to-simulate-the-adoption-of-water-reuse-using-the-social-amplification-of-risk-framework
#12
Venu Kandiah, Andrew R Binder, Emily Z Berglund
Water reuse can serve as a sustainable alternative water source for urban areas. However, the successful implementation of large-scale water reuse projects depends on community acceptance. Because of the negative perceptions that are traditionally associated with reclaimed water, water reuse is often not considered in the development of urban water management plans. This study develops a simulation model for understanding community opinion dynamics surrounding the issue of water reuse, and how individual perceptions evolve within that context, which can help in the planning and decision-making process...
January 11, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28034436/characteristics-of-change-in-water-quality-along-reclaimed-water-intake-area-of-the-chaobai-river-in-beijing-china
#13
Lei Yang, Jiangtao He, Yumei Liu, Jian Wang, Lie Jiang, Guangcai Wang
To reveal the basic characteristics and controlling factors of water quality change in the project Wenyu to Chaobai reclaimed water diversion, the water quality in the study area was monitored for one year at seven monitoring sites. Inverse geochemical models of the statistical groups were developed using PHREEQC to elucidate the hydrochemistry characteristics of reclaimed water and the factors. The monitoring results indicated that nitrogen and phosphorus contents were significantly reduced along the river mainly caused by seasonal and location variation...
December 2016: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28018984/application-of-the-weps-and-sweep-models-to-non-agricultural-disturbed-lands
#14
J Tatarko, S J van Donk, J C Ascough, D G Walker
Wind erosion not only affects agricultural productivity but also soil, air, and water quality. Dust and specifically particulate matter ≤10 μm (PM-10) has adverse effects on respiratory health and also reduces visibility along roadways, resulting in auto accidents. The Wind Erosion Prediction System (WEPS) was developed by the USDA-Agricultural Research Service to simulate wind erosion and provide for conservation planning on cultivated agricultural lands. A companion product, known as the Single-Event Wind Erosion Evaluation Program (SWEEP), has also been developed which consists of the stand-alone WEPS erosion submodel combined with a graphical interface to simulate soil loss from single (i...
December 2016: Heliyon
https://www.readbyqxmd.com/read/28013160/effects-of-untreated-and-treated-wastewater-at-the-morphological-physiological-and-biochemical-levels-on-seed-germination-and-development-of-sorghum-sorghum-bicolor-l-moench-alfalfa-medicago-sativa-l-and-fescue-festuca-arundinacea-schreb
#15
Imen Rekik, Zayneb Chaabane, Amara Missaoui, Ali Chenari Bouket, Lenka Luptakova, Amine Elleuch, Lassaad Belbahri
Wastewater reuse in agriculture may help mitigate water scarcity. This may be reached if high quality treatments removing harmful pollutants are applied. The aim of the present study was to compare the effect of untreated (UTW) and treated wastewater (TW) on germination and seedlings development of alfalfa (Medicago sativa L.), fescue (Festuca arundinacea Schreb.) and sorghum (Sorghum bicolor (L.) Moench). UTW presented high turbidity (130 NTU), chemical and biological oxygen demand (COD, 719mgL(-1), BOD5, 291mgL(-1)) and metal concentrations...
December 19, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28012668/diclofenac-in-arabidopsis-cells-rapid-formation-of-conjugates
#16
Qiuguo Fu, Qingfu Ye, Jianbo Zhang, Jaben Richards, Dan Borchardt, Jay Gan
Pharmaceutical and personal care products (PPCPs) are continuously introduced into the soil-plant system, through practices such as agronomic use of reclaimed water and biosolids containing these trace contaminants. Plants may accumulate PPCPs from soil, serving as a conduit for human exposure. Metabolism likely controls the final accumulation of PPCPs in plants, but is in general poorly understood for emerging contaminants. In this study, we used diclofenac as a model compound, and employed (14)C tracing, and time-of-flight (TOF) and triple quadruple (QqQ) mass spectrometers to unravel its metabolism pathways in Arabidopsis thaliana cells...
March 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28009927/abnormal-ph-elevation-in-the-chaobai-river-a-reclaimed-water-intake-area
#17
Bao-Nan He, Jiang-Tao He, Jian Wang, Jie Li, Fei Wang
The pH is a primary index reflecting water quality in rivers. The Jian River and Chaobai River are two reclaimed water intake areas which have elevated pH. This elevated pH has a marked effect on both the phytoplankton, species in water and vegetation on the shore. Understanding the main reasons causing pH elevation in river water has important implications for river ecosystem management and the improvement of water quality and can provide a theoretical basis for the direction of water quality improvement. For this reason, each biogeochemical and physical process influencing pH changes in water was quantified along the flow direction in the Wenyu to Chaobai reclaimed water diversion project, in which proton consumption and production by such processes were monitored and calculated at five monitoring sections...
December 23, 2016: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/27997135/subinhibitory-concentrations-of-disinfectants-promote-the-horizontal-transfer-of-multidrug-resistance-genes-within-and-across-genera
#18
Ye Zhang, April Z Gu, Miao He, Dan Li, Jianmin Chen
The greater abundances of antibiotic resistance genes (ARGs) in point-of-use tap and reclaimed water than that in freshly treated water raise the question whether residual disinfectants in distribution systems facilitate the spread of ARGs. This study investigated three widely used disinfectants (free chlorine, chloramine, and hydrogen peroxide) on promoting ARGs transfer within Escherichia coli strains and across genera from Escherichia coli to Salmonella typhimurium. The results demonstrated that subinhibitory concentrations (lower than minimum inhibitory concentrations [MICs]) of these disinfectants, namely 0...
January 3, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/27951494/the-long-term-resistance-mechanisms-critical-irrigation-threshold-and-relief-capacity-shown-by-eugenia-myrtifolia-plants-in-response-to-saline-reclaimed-water
#19
José Ramón Acosta-Motos, José Antonio Hernández, Sara Álvarez, Gregorio Barba-Espín, María Jesús Sánchez-Blanco
Salts present in irrigation water are serious problems for commercial horticulture, particularly in semi-arid regions. Reclaimed water (RW) typically contains, among others elements, high levels of salts, boron and heavy metal. Phytotoxic ion accumulation in the substrate has been linked to different electric conductivities of the treatments. Based on these premises, we studied the long-term effect of three reclaimed water treatments with different saline concentrations on Eugenia myrtifolia plants. We also looked at the ability of these plants to recover when no drainage was applied...
December 5, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27912132/phosphate-reclaim-from-simulated-and-real-eutrophic-water-by-magnetic-biochar-derived-from-water-hyacinth
#20
Ru Cai, Xin Wang, Xionghui Ji, Bo Peng, Changyin Tan, Xi Huang
In this study, the efficiency and mechanism of aqueous phosphate removal by magnetic biochar derived from water hyacinth (MW) were investigated. The MW pyrolyzed at 450 °C (MW450) exhibited the most prominent phosphate sorption capacity, which was estimated to be 5.07 mg g(-1) based on Langmuir-Freundlich model. At an initial phosphorus (P) concentration of 1 mg l(-1), >90% P removal was achieved over pH 3-9, but the efficiency decreased sharply at pH > 10. The presence of arsenate and carbonate could remarkably decrease P sorption, while the inhibition effects of antimonate, nitrate and sulfate were less significant...
February 1, 2017: Journal of Environmental Management
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