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Journal articles on the topic 'Pollution dissoute'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

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1

Azzaoui, Samira, Mohammed El Hanbali, and Marc Leblanc. "Note technique – Cuivre, plomb, fer et manganèse dans le bassin versant du Sebou ; Sources d'apport et impact sur la qualité des eaux de surface." Water Quality Research Journal 37, no. 4 (2002): 773–84. http://dx.doi.org/10.2166/wqrj.2002.052.

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Abstract Des échantillons d'eau et de matières en suspension (MES) ont été prélevés le long du Sebou et de ses affluents. Les résultats d'analyse effectuées aussi bien sur la phase dissoute que sur la phase particulaire ont permis de mettre en relief l'important degré de pollution par Cu (0.25 mg de Cu dissous/L, 0.55 mg de Cu particulaire/g), Pb (0.23 mg/L, 0.35 mg/g), Fe (27 mg/L, 50 mg/g) et Mn (2.5 mg/L, 1 mg/g) dont souffre le bassin. Ces résultats ont mis en évidence l'importante contribution des sources anthropiques (industrie, agriculture, décharges). La comparaison des teneurs en Fe e

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2

Branchu, P., L. Bergonzini, M. Benedetti, J. P. Ambroisi, and J. Klerkx. "Sensibilité à la pollution métallique de deux grands lacs africains (Tanganyika et Malawi)." Revue des sciences de l'eau 18 (April 12, 2005): 161–80. http://dx.doi.org/10.7202/705582ar.

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Les lacs Tanganyika et Malawi sont, de par leur volume, les deux plus grands lacs africains. Ces réservoirs semblent pour l'instant épargnés par la pollution en éléments en trace. Il est toutefois crucial, en raison de leurs caractéristiques hydrologiques, de poser la question du temps de réponse de ces systèmes à une pollution chronique potentielle véhiculée par les affluents. Cet article simule ainsi cette réponse dans la fraction dissoute suite à l'introduction pendant 50 ans de polluant par tous les affluents. Cette démarche s'appuie sur un modèle hydrologique intégrant les trois compartim

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3

Martin-Mousset, B., J. P. Croue, E. Lefebvre, and B. Legube. "Distribution et caractérisation de la matière organique dissoute d'eaux naturelles de surface." Water Research 31, no. 3 (1997): 541–53. http://dx.doi.org/10.1016/s0043-1354(96)00259-x.

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4

JARRET, M., C. CAVELIER, and C. DUCAUZE. "Caracterisation de la matiere organique dissoute presente dans les eaux en cours d'affinage: Influence des traitements appliques et du climat." Water Research 20, no. 12 (1986): 1477–88. http://dx.doi.org/10.1016/0043-1354(86)90110-7.

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5

Guibaud, G., and J. Ayele. "Relation entre la spéciation de l'aluminium et sa libération par des sols bruns acides - Influence de la matière organique du sol et de la matière organique dissoute." Journal européen d’hydrologie 31, no. 2 (2000): 201–21. http://dx.doi.org/10.1051/water/20003102201.

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6

Khennoussi, Abdelaziz, Mehdi Chaouch, and Abdelkader Chahlaoui. "Traitement des effluents d’abattoir de viande rouge par électrocoagulation-flottation avec des électrodes en fer." Revue des sciences de l’eau 26, no. 2 (2013): 135–50. http://dx.doi.org/10.7202/1016064ar.

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Résumé L’effluent de l’abattoir municipal de la ville de Meknès est caractérisé par une forte charge organique polluante et une coloration rouge due à la concentration élevée en sang. Les analyses physicochimiques et microbiologiques ont révélé des concentrations importantes en paramètres globaux de pollution, et une charge microbiologique marquée par la dominance des coliformes. La demande chimique en oxygène (DCO) moyenne est de 2 240 mg d’O2•L‑1. La concentration moyenne en azote total est de 290 mg•L‑1. Les orthophosphates sont à une concentration moyenne de 35 mg•L‑1. La matière extractib

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7

TEDOLDI, D., G. CHEBBO, D. PIERLOT, Y. KOVACS, and M. C. GROMAIRE. "Accumulation de métaux et HAP dans le sol de différents ouvrages d’infiltration." Techniques Sciences Méthodes, no. 12 (January 20, 2020): 89–111. http://dx.doi.org/10.36904/tsm/201912089.

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Le développement du contrôle à la source des eaux pluviales urbaines et, notamment, le recours croissant à des dispositifs d’infiltration suscitent des interrogations sur la capacité du sol à jouer le rôle de «filtre» vis-à-vis des polluants présents dans le ruissellement. Cette question a été abordée en couplant campagnes de terrain et approche de modélisation. Sur 11 dispositifs d’infiltration aux caractéristiques contrastées, le sol a été échantillonné en deux phases successives, conduisant à des cartographies de la contamination superficielle en métaux, puis à des profils verticaux de méta

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8

Simonyi-Poirier, M., R. R. Goulet, and F. R. Pick. "Évaluation de la capacité de rétention des métaux dissous d'un marais artificiel en utilisant le périphyton et le gastéropode Helisoma trivolvis." Revue des sciences de l'eau 16, no. 2 (2005): 237–54. http://dx.doi.org/10.7202/705506ar.

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Le but de cette étude est de déterminer si le périphyton et le gastéropode pulmoné Helisoma trivolvis peuvent être utilisés pour évaluer la capacité de rétention des métaux dissous d'un marais construit. Cette étude a été menée dans un marais de la région d'Ottawa-Carleton (Ontario, Canada), qui a été construit en 1995 afin d'améliorer la qualité des eaux de ruissellement provenant d'un bassin versant à usage résidentiel et agricole. Au cours du mois de septembre 1999, des échantillons d'eau ont été prélevés, des escargots (H. trivolvis) ont été recoltés et un substrat artificiel a été utilisé

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9

Brodard, E., J. P. Duguet, J. Mallevialle, and M. Roustan. "A new method to dissolve ozone into water: Deep u tube." Environmental Technology Letters 7, no. 1-12 (1986): 469–78. http://dx.doi.org/10.1080/09593338609384434.

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10

Gobert, Julie. "Mobilité et lutte contre la pollution atmosphérique." Cahiers de géographie du Québec 57, no. 161 (2014): 277–98. http://dx.doi.org/10.7202/1024905ar.

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Résumé Dans un but de développement économique des territoires, les pouvoirs publics sont amenés, en France, à favoriser le « capital mobilité » des individus pour leur donner le moyen d’accéder au marché du travail et à un ensemble de ressources et de services. Toutefois, il est également nécessaire de réguler les problèmes liés à l’automobilité et aux nuisances environnementales qui lui sont inhérentes. Les politiques publiques de transport ont de ce fait évolué : la notion de « droit à la mobilité » se dissout peu à peu au profit d’objectifs plus complexes de développement durable. Ce dilem

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11

Quentin, A., and A. Pellet. "Détermination du fond géochimique pour les métaux dissous dans les eaux de surface du bassin Seine-Normandie." Techniques Sciences Méthodes, no. 9 (September 2019): 33–44. http://dx.doi.org/10.1051/tsm/201909033.

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En établissant les normes de qualité environnementale (NQE) pour évaluer la qualité des eaux de surface, la Commission européenne a permis aux États membres de soustraire, à la concentration mesurée, le fond géochimique pour les métaux dissous. La notion de fond géochimique est ainsi introduite afin de distinguer la part d’origine naturelle de la part de l’activité humaine pour l’évaluation de l’état des eaux. La nature géologique et les processus d’altération sont les principaux moteurs de la variabilité spatiale naturelle. L’objectif de l’étude est de déterminer les valeurs de fond géochimiq

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12

Barokah, Giri Rohmad, Farida Ariyani, and Tuti Hartati Siregar. "Comparison of Storet and Pollution Index Method to Assess the Environmental Pollution Status: A Case Study from Lampung Bay, Indonesia." Squalen Bulletin of Marine and Fisheries Postharvest and Biotechnology 12, no. 2 (2017): 67. http://dx.doi.org/10.15578/squalen.v12i2.287.

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The determination of pollution status is an important process of environmental quality monitoring especially in strategic waters for coastal areas, such as in Lampung Bay. An effective and sensitive Water Quality Index (WQI) method is needed, to accurately determine the environmental pollution status. This study aimed to compare the sensitivity of Storage and Retrieval of Water Quality data System (STORET) and Pollution Index (PI) as a WQI method, a case study from Lampung Bay coastal waters, Indonesia. Water quality analysis i.e. Dissolve Oxygen (DO), pH, salinity, nitrite, nitrate, phosphate

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13

Mohammed, Bouzid, Djadi Amina, Guetaf H., and Bezzazi Boudjema. "Air Pollution from Diesel Particles and Chronic Obstruction Pulmonary Disease - CT Scan Study." European Scientific Journal, ESJ 13, no. 6 (2017): 504. http://dx.doi.org/10.19044/esj.2017.v13n6p504.

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Health problems have been observed in rabbits at low DEP concentration. The subject (animal) showed signs of chronic obstruction pulmonary disease (COPD). CT scan of the biopsy reveals significant emphysematous lesions. DEP grain causes inflammation of lung tissues around sites of deposition. Observations of tissue after formalin fixation reveal brown spots around the points of impact. It also reveals the double organic and inorganic aspect of DEPs. The organic compounds dissolve through slow diffusion in the lung physiological fluid while the inorganic part is partly handled by macrophages (p

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14

Van den Bossche, Arne, Elise De Witte, Wim Dehaen, and Koen Binnemans. "Trihalide ionic liquids as non-volatile oxidizing solvents for metals." Green Chemistry 20, no. 14 (2018): 3327–38. http://dx.doi.org/10.1039/c8gc01061g.

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15

Häkkinen, Riina, and Andrew Abbott. "Solvation of carbohydrates in five choline chloride-based deep eutectic solvents and the implication for cellulose solubility." Green Chemistry 21, no. 17 (2019): 4673–82. http://dx.doi.org/10.1039/c9gc00559e.

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16

Pathak, S. K., Shambhu Prasad, and Tanmay Pathak. "DETERMINATION OF WATER QUALITY INDEX RIVER BHAGIRATHI IN UTTARKASHI, UTTARAKHAND, INDIA." International Journal of Research -GRANTHAALAYAH 3, no. 9SE (2015): 1–7. http://dx.doi.org/10.29121/granthaalayah.v3.i9se.2015.3170.

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The present paper was intended to calculate water quality index (WQI) of river Bhagirathi. It is one of the tributary of holy river Ganga of India. In order to determine the quality of its water for public use, recreation and other purposes , the eleven parameters like pH, electric conductivity, Total dissolve solids, Total suspended solids, Dissolve oxygen , Biological oxygen demand, Total alkalinity, Total hardness, Chloride, Nitrate and Sulphate were determine. The water quality index calculated from the observed parameters indicate the river Bhagirathi at Uttarakhand during winter was unde

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17

Zahraw, Zahraa, Abdul-Hameed Al-Obaidy, Eman Shakir, and Shaymaa Hamdy. "ALGAE AS BIOINDICATORFOR POLLUTION OF TIGRIS RIVER BY INDUSTRIAL WASTE." International Journal of Engineering Technologies and Management Research 5, no. 5 (2020): 58–64. http://dx.doi.org/10.29121/ijetmr.v5.i5.2018.226.

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This study has been conducted during 2016, the samples were collected from discharge of General Company for Vegetable Oil Industry before and after treatment in Baghdad city. Some parameters were measured such as: Temperature, pH, Electrical Conductivity, Dissolve Oxygen and Phosphate, all reading before treatment are very high but the readings degreased rapidly after treatment. In contrast, oxygen concentration before treatment was low and elevated after treatment so much until reaches to the optimal condition for all biological and chemical properties. In this study 37 species of algal were

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18

Dwivedi, Bharti, and Suchitra Banerjee. "PHYSICO-CHEMICAL MONITORING OF LAKE WATER DURING IDOL IMMERSION." International Journal of Research -GRANTHAALAYAH 6, no. 7 (2018): 159–63. http://dx.doi.org/10.29121/granthaalayah.v6.i7.2018.1294.

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The present study concerns on physicochemical monitoring of the water quality nature and the extent of pollution in lake due to idol immersion. Pre-immersion and post immersion samples were collected from lake and analyzed for various water quality parameters such as pH, turbidity, total dissolve solid (TDS), total solid (TS) total suspended solid (TSS), conductivity phosphate, dissolved oxygen (DO), BOD, COD and oil & grease. The results were compared with standards prescribed by WHO and ISI. From the study, it has been found that the values of these parameters significantly increas

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19

Sharma, H., and Z. Ahmad. "Transverse mixing of pollutants in streams: a review." Canadian Journal of Civil Engineering 41, no. 5 (2014): 472–82. http://dx.doi.org/10.1139/cjce-2013-0561.

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Spilling or release of foreign particles in the flowing water is considered as pollution of water, and due to the inherent property of water to dissolve the substance, the particulate is well mixed in water. To monitor the extent of pollution in a stream it is essential to know how the pollutants mix in the river. It is observed that vertical mixing of pollutants is a very rapid process in the vertical directions and longitudinal mixing occurs very far from source of pollutant, which is generally out of reach of observations. Thus intermediate or transverse mixing zone is considered very impor

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20

Moula, Muhammad Towhid, Ranjit K. Nath, Mh Mosfeka Chowdhury, and Md Abu Bakar Siddique. "An Overview of River Side Pollutants and their Effects on Physico-Chemical Changes in Water Quality of River Halda, Bangladesh." Asian Journal of Chemistry 32, no. 4 (2020): 827–34. http://dx.doi.org/10.14233/ajchem.2020.22347.

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Halda is an important river of Bangladesh, is now polluted in different ways through industrial, agricultural, domestic and sewage disposal. Increased anthropogenic activities have increased the potential pollution of the river and excessive pollutants may be toxic to humans and aquatic fauna. Presence of heavy metals in the river water causes perilous impact on the aquatic organisms. Hence, regular monitoring of pollution levels in the river is indispensable. In this study, we discuss about physico-chemical assessments of water quality parameters viz. pH, dissolve oxygen (DO), biochemical oxy

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21

Albanese, V., J. C. Milano, and J. L. Vernet. "Etude de l'evaporation de quelques hydrocarbures halogenenes de faible masse moleculaire dissous a l'etat de traces dans l'eau." Environmental Technology Letters 8, no. 1-12 (1987): 657–68. http://dx.doi.org/10.1080/09593338709384529.

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22

Santsa Nguefack, C. V., R. Ndjouenkeu, and M. B. Ngassoum. "Impact anthropique sur la qualité métallique de l’eau du bassin versant de la Menoua et risque sanitaire." Techniques Sciences Méthodes, no. 7-8 (July 2019): 25–36. http://dx.doi.org/10.1051/tsm/201907025.

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L’eau du bassin versant de la Menoua subit de plein fouet le phénomène de pollution induite par les activités anthropiques très nombreuses dans la région. L’objectif de ce travail est d’étudier l’évolution spatio-temporelle de la qualité métallique de l’eau de consommation humaine du bassin versant de la Menoua, dans le but d’évaluer son degré de pollution due aux activités anthropiques. Cela afin d’estimer le niveau de risque sanitaire que court la population exposée à sa consommation. L’analyse physico-chimique (pH, température, conductivité électrique, turbidité et oxygène dissous) et métal

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23

Quentel, F., C. Madec, and J. Courtot-Coupez. "Influence des substances organiques dissoutes sur le dosage du plomb en milieu marin par redissolution anodique." Water Research 20, no. 3 (1986): 325–33. http://dx.doi.org/10.1016/0043-1354(86)90080-1.

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24

Kerouel, R., and A. Aminot. "Procédure Optimisée Hors-contaminations pour l'Analyse des eléments nutritifs dissous dans l'eau de mer." Marine Environmental Research 22, no. 1 (1987): 19–32. http://dx.doi.org/10.1016/0141-1136(87)90079-1.

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25

Liu, Qilin. "New Water Treatment Chemical PFZSS Preparation and Application." Open Chemical Engineering Journal 9, no. 1 (2015): 121–24. http://dx.doi.org/10.2174/1874123101509010121.

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Nowadays global water quality pollution has become extremely serious, and solving water pollution has been extremely urgent, so researches on water pollution solutions have become even urgent. And flocculating method is the most traditional water purification method, research and create new high performance flocculating agent is one of flocculating method inherent problems. The paper mainly describes adding iron, zinc two kinds of metal captions together in polysyllabic acid, well controlling all aspects requirements in technology, researching and creating new water purification substance—poly

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26

Li, Jin Bao, Mei Yun Zhang, Ya Ling Yang, and Ling Ying Jia. "Research on Pollution-Free Separation of Wheat Straw Cellulose by Ethanol/Acetic Acid Solvent System." Advanced Materials Research 284-286 (July 2011): 786–90. http://dx.doi.org/10.4028/www.scientific.net/amr.284-286.786.

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Agriculture wastes-- wheat straw is used as raw material to take place of cotton and wood pulp in this research. In order to separating of the crude cellulose, non-polluting ethanol/acetic acid binary solvent system is utilized to dissolve lignin. Then pure cellulose is obtained by refining processing. Finally, microcrystalline cellulose is obtained by acid hydrolysis, grinding and the subsequent process. The paper focuses on the effect of the dosage of acetic acid in the binary solvent system on separating efficiency of wheat straw cellulose, and analyzing the effects of acetic acid dosage on

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27

Razai, Tengku Said. "Effek Konsentrasi Partikel Plastik terhadap Pertumbuhan dan Kelangsungan Hidup Ikan Bawal Bintang (Trachinotus blochii)." Dinamika Lingkungan Indonesia 7, no. 1 (2020): 13. http://dx.doi.org/10.31258/dli.7.1.p.13-16.

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Abstrac :Plastic pollution / waste has an impact that will disturb the stability of the ecosystem, especially aquatic organisms such as fish. The main source of plastic contamination comes from household waste that is not managed properly, especially in coastal areas that make the sea as a place of final discharge. Plastic pollution is currently the main problem that is accepted by the environment, especially water. Plastic will dissolve in the waters and will form small sizes (micro-plastic) impacting biota, including fish. Fish including aquatic organisms that can not distinguish between foo

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28

Madec, Christian, Bernard Trébern, and Jacqueline Courtot-Coupez. "Comportement des acides amines dissous du milieu marin apres injection de chlore." Water Research 19, no. 9 (1985): 1171–78. http://dx.doi.org/10.1016/0043-1354(85)90354-9.

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29

Mepaiyeda, S., C. Baiyegunhi, K. Madi, and O. Gwavava. "A geophysical and hydro physico-chemical study of the contaminant impact of a solid waste landfill (swl) in King Williams’ Town, Eastern Cape, South Africa." Open Geosciences 11, no. 1 (2019): 549–57. http://dx.doi.org/10.1515/geo-2019-0045.

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Abstract Electrical resistivity imaging (ERI) surveys and physico-chemical analysis were carried out on a solid waste landfill (SWL) in Eastern Cape, South Africa to assess the impact of leachate pollution on groundwater quality. 2-D resistivity imaging was done across three profile lines (A, C and E) on the landfill. Physico-chemical properties of water samples from the leachate pond and boreholes (BH1 and BH2), located between 80 m to 200 m from the edge of the landfill were analysed. The results revealed groundwater contamination to a depth of about 75 m,well within the aquiferous zone. Hig

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Zainulabdeen, Iman Hussein. "Study of the properties of drinking water for Kirkuk city and its pollution in some areas." MATEC Web of Conferences 162 (2018): 05008. http://dx.doi.org/10.1051/matecconf/201816205008.

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This study was conducted to demonstrate the difference between drinking water quality for seven different areas of Kirkuk city with the treatment water in the main and three sub storages tanks, affected with drinking water pipe lines, supplying system Alternate and continuous and also pipes across the construction work’s areas. The physical and chemical properties (turbidity, pH, conductivity, Alkalinity, Total hardness, calcium, magnesium, chloride, sulfate, TDS (Total dissolve solids), TSS (Total suspended solids), sodium and potassium) for raw water and treated water in the Storages in addi

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Chevreuil, M., A. Chesterikoff, and R. Létolle. "Modalités du transport des PCB dans la rivière Seine (France)." Revue des sciences de l'eau 1, no. 4 (2005): 321–37. http://dx.doi.org/10.7202/705015ar.

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L'évolution de la pollution et les modalités du transport des P.C.B. en rivière ont été étudiées en Seine à Paris en relation avec les épisodes du cycle hydrologique durant un an. Les résultats analytiques montrent que la pollution occasionnée par les P.C.B. est supérieure à celle produite par les autres résidus de pesticides organochlorés, et ceci malgré la limitation réglementaire d'emploi des P.C.B. aux systèmes clos depuis 1975. Pour 88 % des échantillons analysés, les concentrations en P.C.B. dissous sont supérieures aux teneurs en P.C.B. adsorbés sur M.E.S. et atteignent jusqu'à 170 ng.l

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Bentekhici, Nadjla, Yamina Benkesmia, Faouzi Berrichi, and Sid Ahmed Bellal. "Évaluation des risques de la pollution des eaux et vulnérabilité de la nappe alluviale à l’aide des données spatiales. Cas de la plaine de Sidi Bel Abbès (nord-ouest algérien)." Revue des sciences de l’eau 31, no. 1 (2018): 43–59. http://dx.doi.org/10.7202/1047052ar.

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En raison d’une forte croissance démographique et d’une évolution des modes de consommation, on se retrouve face à une augmentation rapide des volumes de déchets qui engendrent des risques pour la qualité des eaux dans la plaine de Sidi Bel Abbès. L’étude réalisée porte sur l’évaluation des risques de pollution ainsi que la cartographie de la vulnérabilité de la nappe alluviale à la pollution. Une première étape de l’étude consiste à utiliser des données spatiales du capteur algérien ALSAT-2A à haute résolution (2,5 m) pour l’identification et la cartographie des sources de pollution des eaux

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33

Mehdaoui, Radouan, El Mostafa Mili, and Abderrahman Mahboub. "Caractérisations physico-chimiques et bactériologiques pour l'évaluation de la qualité des eaux souterraines de la vallée du moyen Ziz (Errachidia Sud-Est du Maroc)." La Houille Blanche, no. 5-6 (December 2019): 5–15. http://dx.doi.org/10.1051/lhb/2019054.

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Le présent travail a pour objectif l'étude des origines de la minéralisation et de la détérioration de la qualité des eaux souterraines de la vallée du moyen Ziz, ainsi que la détermination des sources de leur pollution en vue d'établir une cartographie de la qualité de la nappe Quaternaire. Pour ce faire, vingt points d'eau ont été échantillonnés durant le mois de janvier 2017 et dont cinq paramètres physiques et organoleptiques ont été analysés : pH, température, turbidité, conductivité électrique et l'oxygène dissous. Alors que onze points d'eau ont été échantillonnés pour caractériser deux

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34

Setyawati Sigit, A. Shofy Mubarak, Alfi Hermawati W. S. ,. Rahayu Kusdarwati,. "Pengaruh Konsentrasi Kadmium Terhadap Perubahan warna Dan Persentase Jenis Kelamin Jantan Anakan Daphnia magna." Jurnal Ilmiah Perikanan dan Kelautan 1, no. 1 (2019): 43. http://dx.doi.org/10.20473/jipk.v1i1.11697.

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Abstract Cadmium is one of dangerous heavy metal and it can cause water pollution. As an alternative early warning toward heavy metal in water, Daphnia magna can be used as biology indicator water pollution that caused by heavy metal. Daphnia magna is organism that ussualy used for bioassay in many progressing countries, because that organism have important role in freshwater ecology, short life cycle about 3 weeks and sensitive toward chemical environment. Grade of toxicity heavy metal can measured with lethal and sub lethal parameter. In Daphnia magna, sub lethal parameter that can be observ

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Cozijn, J. L., F. Andritsos, P. A. Konstantinopoulos, et al. "RECOVERY OF OIL TRAPPED IN SHIP-WRECKS: THE DIFIS CONCEPT." International Oil Spill Conference Proceedings 2008, no. 1 (2008): 83–91. http://dx.doi.org/10.7901/2169-3358-2008-1-83.

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ABSTRACT A method for the prompt and cost-effective intervention and remediation of tanker wrecks dealing with eventual leaks and recovering the fuel trapped in their tanks, even at considerable depths, is described. The method is of general applicability as long as the trapped pollutant does not dissolve and is of lower density than sea water. It relies on gravity to channel the flow of spilt fuel towards the surface. Instead of channeling the flow directly to the surface, the fuel-water mix is directed to a buffer reservoir/separator some 30–50 m below the sea surface so as not to be affecte

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Hostache, R., C. Hissler, P. Matgen, C. Guignard, and P. Bates. "A 2-D hydro-morphodynamic modelling approach for predicting suspended sediment propagation and related heavy metal contamination in floodplain: a sensitivity analysis." Hydrology and Earth System Sciences Discussions 11, no. 2 (2014): 1741–76. http://dx.doi.org/10.5194/hessd-11-1741-2014.

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Abstract. Fine sediments represent an important vector of pollutant diffusion in rivers. When deposited in floodplains and riverbeds they can be responsible for soil pollution. In this context, this paper proposes a hydro-morphodynamic modelling exercise aiming at predicting transport and diffusion of fine sediments and dissolved pollutants. The model is based upon the Telemac hydro-informatic system (dynamical coupling Telemac-2D-Sysiphe). As empirical and semi-empirical parameters need to be calibrated for such a modelling exercise, a sensitivity analysis is proposed. In parallel to the mode

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Khamar, Mohamed, Driss Bouya, and Claude Ronneau. "Pollution métallique et organique des eaux et des sédiments d’un cours d’eau marocain par les rejets liquides urbains." Water Quality Research Journal 35, no. 1 (2000): 147–61. http://dx.doi.org/10.2166/wqrj.2000.009.

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Abstract L’oued Sebou, l’une des ressources en eau les plus importantes du Maroc, reçoit quotidiennement un important volume d’eaux usées de la ville de Fès. La présente étude analyse l’impact de ces rejets sur la qualité de ce système aquatique. Les métaux lourds et éléments toxiques (Cr, Zn, Fe, Co, As, Ba, Sr, Ag, Hg, Sb et Rb) ont été déterminés, par activation neutronique, dans l’effluent urbain et dans les eaux et les sédiments du cours en amont et en aval de sa confluence avec les rejets. Les résultats ont montré qu’il y a une forte contamination du cours d’eau par ces métaux et que les

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Sánchez-Duarte, Reyna G., Dalia I. Sánchez-Machado, Jaime López-Cervantes, and Ma A. Correa-Murrieta. "Adsorption of allura red dye by cross-linked chitosan from shrimp waste." Water Science and Technology 65, no. 4 (2012): 618–23. http://dx.doi.org/10.2166/wst.2012.900.

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The present study was designed to evaluate the chitosan, which has been obtained by deacetylation of chitin, as a biosorbent. The chitin was isolated from fermented shrimp waste by an important local industrial food biopolymer. The aim of this work was the characterization of chitosan and preparation of cross-linked chitosan- tripolyphosphate (chitosan-TPP) beads for the removal of allura red food dye from aqueous solutions. Conditions of batch adsorption such as pH, time and adsorbent dose were examined. The effectiveness of cross-linked chitosan beads for dye removal was found to be higher f

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Witasek, Roman, and Petr Pánek. "New Trends in the Separation of Significant Greenhouse Gases from Flue Gas Streams." Advanced Materials Research 1020 (October 2014): 573–78. http://dx.doi.org/10.4028/www.scientific.net/amr.1020.573.

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The paper is closely related to the challenge of the most important greenhouse gas - carbon dioxide. Both, the effective capture and secure storage of CO2, is an urgent environmental problem. Approximately ¾ of all anthropogenic emissions of CO2are related to the use of fossil fuels. Great attention is given to the absorption processes for the capture of the gas. Carbon Capture and Storage (CCS) is a promising solution for achieving a significant reduction in CO2- emissions. Capture of combustion gases using standard volatile organic solvents are the source of numerous problems like environmen

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Li, Juan, Bufan Zheng, Ruiwen Hu, et al. "Pseudomonas species isolated from tobacco seed promote root growth and reduce lead contents in Nicotiana tobacum K326." Canadian Journal of Microbiology 65, no. 3 (2019): 214–23. http://dx.doi.org/10.1139/cjm-2018-0434.

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Endophytic bacteria are generally helpful for plant growth and protection. We isolated from tobacco seeds three Pseudomonas strains (K03, Y04, and N05) that could produce siderophores, indole-3-acetic acid, and 1-aminocyclopropane-1-carboxylate deaminase, fix nitrogen, dissolve phosphorus and potassium, and tolerate heavy metals. In pot experiments, the three isolated strains significantly promoted root growth and increased the root enzyme activity in Nicotiana tobacum K326. Furthermore, bacterial inoculations increased the proportion of residual lead (Pb) by 8.36%–51.63% and decreased the tot

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Lerner, D. N., G. P. Wealthall, and A. Steele. "Assessing Risk from DNAPLs in Fractured Aquifers." Journal of Agricultural and Marine Sciences [JAMS] 7, no. 2 (2002): 47. http://dx.doi.org/10.24200/jams.vol7iss2pp47-52.

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Chlorinated solvents are among the most widespread pollutants of groundwater. As DNAPLs (dense nonaqueous phase liquids), they can move rapidly and in complex patterns through fractures to reach and contaminate large volumes of aquifer, and then dissolve to cause significant pollution of groundwater. However, clean-up of DNAPLs in fractured rocks is virtually impossible and certainly expensive. Risk assessment should be used to decide whether the pollution is serious enough to justify major expenditure on clean-up or containment. A key aspect of risk assessment for DNAPLs in fractured aquifers

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Purnomo, Budi, Novi Rahmawati Sutopo, and Yulia Nuraini. "Utilization of indigenous phosphate-solubilizing bacteria to optimize the use of coal fly ash for increasing available-P in an Ultisol." Journal of Degraded and Mining Lands Management 8, no. 4 (2021): 2937–46. http://dx.doi.org/10.15243/jdmlm.2021.084.2937.

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Coal fly ash (CFA) is a coal-burning by-product containing macro and micronutrients, and it is the potential material for improving available P in Ultisols. Phosphate-solubilizing bacteria (PSB) play a role in phosphorus solubilization. This study aimed at elucidating the potential use of phosphate-solubilizing bacteria to optimize the use of coal fly ash for increasing soil available P. This study was conducted in two stages, namely isolation of indigenous PSB from an Ultisol and application of the PSB and CFA to improve soil available P. Five indigenous PSB isolated from the soil had the abi

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PATRIS, T., P. BALCH, C. JOANNIS, and A. CHAUBET. "Relations entre paramètres physiques et concentrations en polluants dans les effluents unitaires de Brest Métropole." Techniques Sciences Méthodes, no. 6 (June 22, 2020): 59–70. http://dx.doi.org/10.36904/tsm/202006059.

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Un volet du projet de R&D « Medisa » piloté par la société publique locale Eau du Ponant concerne les possibilités de conversion de mesures de conductivité et de turbidité en concentrations en matières en suspension (MES), demande chimique en oxygène (DCO), demande biochimique en oxygène à 5 jours (DBO5), azote Kjeldahl et phosphore total. Dans un premier temps, une analyse globalisée a été menée sur l’ensemble des 217 échantillons prélevés en temps sec et en temps de pluie au droit de six déversoirs d’orage situés sur le réseau unitaire de Brest Métropole. Elle permet d’identifier deux ty

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Houma, F., R. Belkessa, A. Khouider, N. Bachari, and Z. Derriche. "Étude corrélative des paramètres physico-chimiques et des données satellites IRS1C pour caractériser la pollution aquatique. Application à la baie d’Oran, Algérie." Revue des sciences de l'eau 17, no. 4 (2005): 429–46. http://dx.doi.org/10.7202/705541ar.

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Le contrôle de la qualité de l'eau est fondé naturellement et traditionnellement sur des mesures et des prélèvements in situ. Des images satellites étalonnées à partir des données mesurées in situ fournissent une information quantitative et continue sur le milieu aquatique et peuvent être employées pour estimer, avec une approximation raisonnable, les facteurs affectant la qualité de l’eau L’objectif de cet article consiste à établir des corrélations entre les propriétés optiques de l’eau de mer et les paramètres physico-chimiques. Nous présentons des relations exprimant les variables indicatr

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Yang, Jian Li, Mei Li Du, Jing Liu, and Chun Xia Yu. "Study on Drainage Oil to Prepare Collectors of Coal Flotation." Advanced Materials Research 734-737 (August 2013): 901–5. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.901.

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At present, kerosene is one of the most widely used non-polar hydrocarbon oil collector agent in coal flotation in China, kerosene is difficult to dissolve in water, with good collector, but the dosage is comparatively large in the actual production.The drainage oil is from the dining recycled goods and the waste of animal flesh, can be used for preparation of fatty acid collector, which not only to reduce environmental pollution,but also to reduce the risk of food safety. At the same time, if drainage oil can replace the kerosene in coal collection, it will improve the coal preparation plant

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Ahmed, KS, AKML Rahman, M. Sarkar, et al. "Assessment on the level of contamination of Turag river at Tongi area in Dhaka." Bangladesh Journal of Scientific and Industrial Research 51, no. 3 (2016): 193–202. http://dx.doi.org/10.3329/bjsir.v51i3.29431.

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Assessment on the level of pollution of Turag river water was performed by measuring various physico-chemical parameters. Water samples were collected five times in a year both dry and rainy season at five different locations: Bishwa Ijtema field, Tongi Bridge, Kachare ghate, River side of Dhaka Dying and Effluent of Dhaka Dying. Most of the measured parameters exceeded the permissible limit of standard level. Values for different parameters at different points were recorded such as Temperature (T): 23.9 to 31.2°C, pH: 7.2 to 10.1, Salinity: 64 to 933 ppm, Total dissolved solid (TDS): 90 to 12

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Lo, S. L., and L. J. Huang. "Effects of NTA on the Fate of Heavy Metals in Sediments." Water Science and Technology 28, no. 8-9 (1993): 191–94. http://dx.doi.org/10.2166/wst.1993.0617.

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Sodium tripolyphosphate (STPP), which is widely used as a builder in synthetic detergents, was found as one of the major factors of eutrophication in rivers and lakes. Many countries have used nitrilotriacetate (NTA) in detergents to replace STPP, but it induced another pollution problem. Because NTA is an effective chelating agent, it will dissolve heavy metals from the sediments and affect the fate of metal species in rivers. The purpose of this study is to investigate the effect of the mobilization of heavy metals from sediments by NTA. The experimental results indicated that NTA increases

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Degefe, Gezahegn, Girum Tamire, Seid Mohammed Hassen, and Abinet Haile. "Evaluation of the Use of Some Benthic Macro-invertebrate Multimetric Indices Associations with Environmental Variables in Ecological Assessment of Some Ethiopian Rivers." Hydro Nepal: Journal of Water, Energy and Environment 20 (January 27, 2017): 49–54. http://dx.doi.org/10.3126/hn.v20i0.16489.

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The ecological status of six selected rivers which are found around central Ethiopia and North Shewa Zone and exposed to environmental stresses at varied extent, was studied using biological quality elements (BQE). One thousand one hundred thirty three (1133) individuals of macroinvertebrates, from 22 families and 5 orders of insects, were collected from the rivers. Seven metrics that had low correlation (p>0.05) were selected to calculate the final B-IBI and the result showed that both sites of Akaki, Sebeta and Jemma Rivers had poor water quality whereas Beresa, Chacha and Mojo (upstream

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Mu, Biao, Wei Zhu, Jun Zhong, et al. "Mechanism of separation and removal of water from oily sludge using liquid dimethyl ether to dissolve hydrocarbons." Chemosphere 279 (September 2021): 130452. http://dx.doi.org/10.1016/j.chemosphere.2021.130452.

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Okajima, Idzumi, Tatsuya Kanie, and Takeshi Sako. "Silicone Resin Coating of Micro-Sized Ferrite Particles Using Supercritical Carbon Dioxide." Polymers 12, no. 9 (2020): 2012. http://dx.doi.org/10.3390/polym12092012.

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An environmentally friendly and efficient polymer coating method for micro-sized particles was developed using supercritical CO2. Because this method used supercritical CO2 as the solvent to dissolve the coating material, we avoided environmental pollution from organic solvents, saved the energy required to evaporate/remove organic solvents, realized a uniform coating film on the fine particles, and prevented agglomeration of the coating particles. The solubilities of the five silicone resins used as coating materials were measured using the flow method, and the data were well correlated by Ch

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