caa a22 4500 445815426 CHVBK 20180317145226.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s10040-011-0738-x doi (NATIONALLICENCE)springer-10.1007/s10040-011-0738-x Evaluating salinity sources of groundwater and implications for sustainable reverse osmosis desalination in coastal North Carolina, USA [Elektronische Daten] [David Vinson, Haylee Schwartz, Gary Dwyer, Avner Vengosh] Évaluation des sources de salinité des eaux souterraines et implications pour un usage durable de la désalinisation par osmose inverse sur la côte de Caroline du Nord, États-Unis The natural and pumping-induced controls on groundwater salinization in the coastal aquifers of North Carolina, USA, and the implications for the performance of a reverse osmosis (RO) desalination plant have been investigated. Since installation of the well field in the Yorktown aquifer in Kill Devil Hills of Dare County during the late 1980s, the groundwater level has declined and salinity of groundwater has increased from ∼1,000 to ∼2,500 mg/L. Geochemical and boron isotope analyses suggest that the salinity increase is derived from an upflow of underlying saline groundwater and not from modern seawater intrusion. In the groundwater of four wells supplying the plant, elevated boron and arsenic concentrations were observed (1.3-1.4 mg/L and 8-53 μg/L, respectively). Major ions are effectively rejected by the RO membrane (96-99% removal), while boron and arsenic are not removed as effectively (16-42% and 54-75%, respectively). In coming decades, the expected rise of salinity will be associated with higher boron content in the groundwater and consequently also in the RO-produced water. In contrast, there is no expectation of an increase in the arsenic content of the salinized groundwater due to the lack of increase of arsenic with depth and salinity in Yorktown aquifer groundwater. Springer-Verlag, 2011 Coastal aquifers nationallicence Stable isotopes nationallicence Arsenic nationallicence Reverse osmosis desalination nationallicence USA nationallicence Vinson David Division of Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, P.O. Box 90328, 27708, Durham, NC, USA aut Schwartz Haylee Division of Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, P.O. Box 90328, 27708, Durham, NC, USA aut Dwyer Gary Division of Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, P.O. Box 90328, 27708, Durham, NC, USA aut Vengosh Avner Division of Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, P.O. Box 90328, 27708, Durham, NC, USA aut Hydrogeology Journal Springer-Verlag 19/5(2011-08-01), 981-994 1431-2174 19:5<981 2011 19 10040 https://doi.org/10.1007/s10040-011-0738-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10040-011-0738-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Vinson David Division of Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, P.O. Box 90328, 27708, Durham, NC, USA aut NATIONALLICENCE 700 1- Schwartz Haylee Division of Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, P.O. Box 90328, 27708, Durham, NC, USA aut NATIONALLICENCE 700 1- Dwyer Gary Division of Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, P.O. Box 90328, 27708, Durham, NC, USA aut NATIONALLICENCE 700 1- Vengosh Avner Division of Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, P.O. Box 90328, 27708, Durham, NC, USA aut NATIONALLICENCE 773 0- Hydrogeology Journal Springer-Verlag 19/5(2011-08-01), 981-994 1431-2174 19:5<981 2011 19 10040 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer