American Journal of Water Science and Engineering

Volume 5, Issue 2, June 2019

  • Regional Comparison of Impacts from Seven Australian Coal Mine Wastewater Discharges on Downstream River Sediment Chemistry, Sydney Basin, New South Wales Australia

    Nakia Belmer, Ian Alexander Wright

    Issue: Volume 5, Issue 2, June 2019
    Pages: 37-46
    Received: Apr. 19, 2019
    Accepted: May 29, 2019
    Published: Jun. 12, 2019
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    Abstract: This study investigates the accumulation of licensed and regulated coal mine wastewater pollutants from seven coal mines on each mines respective receiving waterways river sediments. Results from this study shows that the coal mine wastewater pollutants are accumulating within river sediments downstream of the coal mine wastewater inflows at varyin... Show More
  • Quantitative Estimation of Recharge Potentialities of Shallow Aquifers in Senegal River Delta Hydrosystem

    Moctar Diaw, Ibrahima Mall, Marc Le Blanc, Serigne Faye, Yves Travi

    Issue: Volume 5, Issue 2, June 2019
    Pages: 47-61
    Received: Apr. 02, 2019
    Accepted: May 23, 2019
    Published: Jun. 26, 2019
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    Abstract: The objective of this paper is to assess quantitatively the potential recharge of shallow aquifers in the Senegal River delta in context of semi-arid climate, of massive irrigation development and of modification of hydrologic and hydrogeological characters after dams building. Quantitative estimation of recharge potentialities have been based on h... Show More
  • Regional Comparison of Impacts to Stream Macroinvertebrates from Active and Inactive Coal Mine Wastewater Discharges, Sydney Basin, New South Wales Australia

    Nakia Belmer, Ian Alexander Wright

    Issue: Volume 5, Issue 2, June 2019
    Pages: 62-75
    Received: Apr. 19, 2019
    Accepted: May 29, 2019
    Published: Jul. 01, 2019
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    Abstract: This study investigates macroinvertebrates from waterways receiving wastewater from coal mines in the Sydney Basin. Three of the coal mines were inactively mining oar and four actively mining oar during sampling. Macroinvertebrates were collected from each collieries receiving waterway upstream and downstream of all mine wastewater inflows. All the... Show More
  • Regulated Coal Mine Wastewater Contaminants Accumulating in an Aquatic Predatory Beetle (Macrogyrus rivularis): Wollangambe River, Blue Mountains New South Wales Australia

    Nakia Belmer, Kasjan Paciuszkiewicz, Ian Alexander Wright

    Issue: Volume 5, Issue 2, June 2019
    Pages: 76-87
    Received: Apr. 19, 2019
    Accepted: May 29, 2019
    Published: Jul. 01, 2019
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    Abstract: This study investigates contaminants from a single coal mine wastewater discharge released to the Wollangambe River accumulating in an aquatic predatory beetle (Macrogyrus rivularis). The study was undertaken within the Wollangambe River and its surrounding tributaries. The coal mine wastewater discharge is regulated by the New South Wales Environm... Show More
  • Effect of Reduced Grapheme Oxide in Enhancing the Photocatalytic Activity of β-NaYF4:Ho3+@TiO2

    Wanyu Han, Tianhui Wu, Shuang Zhu

    Issue: Volume 5, Issue 2, June 2019
    Pages: 88-95
    Received: May 09, 2019
    Accepted: Jun. 11, 2019
    Published: Jul. 04, 2019
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    Abstract: β-NaYF4:Ho3+@TiO2–reduced graphene oxide (NYFH@TO–rGO) ternary composites photocatalysts were prepared via a three-step method and used for cleanup of Rhodamine B (RhB) aqueous solution under visible light irradiation. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), fluorescence spectrometrie... Show More
  • Study on the Mechanism of Biotreatment of Coke-making Wastewater

    Jianwei Zhu, Bin Wu

    Issue: Volume 5, Issue 2, June 2019
    Pages: 96-104
    Received: Jun. 05, 2019
    Accepted: Jul. 02, 2019
    Published: Jul. 12, 2019
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    Abstract: Based on a large number of experimental data, this paper puts forward a three-stage hypothesis of biochemical degradation of coking wastewater. And studies on the biochemical degradation kinetics in various stages through laboratory experiments have been made. In these studies, a new concept has been proposed, that of substances present in coking w... Show More