A Colina do Castelo, onde se inclui Alfama, é uma zona da cidade de Lisboa rica em recursos hidrológicos, frios e termais, que foram aproveitados ao longo dos tempos pelas populações e onde se encontram identificadas dezenas de estruturas de abastecimento de águas de diferentes …
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Here we present a numerical modeling effort to estimate historical groundwater concentrations of perfluorooctanoate (PFOA), perfluorooctane sulfonate (PFOS), and perfluorohexane sulfonate (PFHxS) resulting from releases of aqueous film-forming foam (AFFF) near Colorado Springs, …
Aquifers are an important water source that continue to sustain populations internationally. These populations are supported by a wide range of water uses for livestock grazing, household use, and commercial demands. In regions that are heavily aquifer-dependent, the aim to both…
Groundwater has an important role in forging the composition of surface water, supplying nutrients crucial for the development of balanced ecosystems and potentially introducing contaminants into otherwise pristine surface water. Due to water-rock interactions, radium (Ra) in gr…
Cyclic storage of surface water and groundwater (CSSG) refers to physically integrated and operationally-interconnected surface water and groundwater subsystems with their full interactions. In such a system, surface and subsurface impoundment subsystems may be treated as compet…
Prior studies of groundwater systems have associated increasing salinity and anoxic conditions with increasing radium (Ra) activities in water due to the decreasing effectiveness of Ra removal processes. However, the components of salinity (e.g. Ca vs. Na and SO42- vs. Cl-domina…
This dissertation in environmental history is concerned with human landscapes of groundwater extraction. Using temporal and spatial comparison, it examines the role of groundwater tunnel-wells and human understandings of groundwater availability in the Western Desert of Egypt; t…
An assessment of the groundwater quality at the Olusosun landfill in Lagos, Nigeria was conducted to determine interactions between the landfill wastes and the groundwater and the potential migration of pollutants into the neighbouring communities. Groundwater samples were colle…
Traditional flood control in Bangladesh used ring levees to protect selected areas. These levee projects have four drawbacks: (1) reduced groundwater recharge; (2) highlands deprived of needed water; (3) water deflected into unprotected areas; and (4) periodic failure. This stud…
The fates of nitrogen and dissolved organic carbon (DOC) are of major concern in soil aquifer treatment (SAT) systems, because of their potential to contaminate the groundwater and result in health problem when consumed. Soil surface components play a significant role in the rem…
Public concern over groundwater quality has grown significantly in recent years and has focused increasingly on agriculture as a source of groundwater quality problems. Increasing evidence of nitrate contamination of groundwater beyond the maximum contaminant level has intensifi…
UAE is located at the southeast of Arabian Peninsula. Two main aquifers occupy the study area: the Eastern Gravel Plain and Ophiolite aquifer. Increasing salinity of groundwater and depletion of aquifers are a major concern in the UAE. Previous studies suggest that groundwater, …
The semi and climate at the Fordwah Eastern Sadiqia (South) Project, Pakistan, comprised of 105,000 ha of culturable command area, is characterized by large seasonal temperature fluctuations and a monsoon season. The canal system behaves as a recharge source to the regional grou…
The rise in level and increase in salinity of groundwater are causing accelerated deterioration of stone foundations of visible temples and monuments at Luxor, southern Egypt. Elevated groundwater is thought to cause a loss of cohesion and breakdown of the stone, while pressure …
This study is based on the hypothesis that shortage of dissolved oxygen at and below the water table and extraction of groundwater by irrigation wells at a rate greater than the aquifer recharge rate are the main causes of arsenic release in the groundwater of Bangladesh. The ma…
Self Supply Systems (SSS) can be defined as privately owned household level water sources. The research focus is on urban self supply hand dug wells in Abeokuta, Nigeria. Self supply wells serve an estimated 45% of Abeokuta’s population. SSS can be gradually upgraded to improve …
This research investigated the ecological significance of GW-SW interactions in the hyporheic zone of two Scottish mountain rivers (the Girnock Burn and the River Feshie). The research comprised three components: (i) an assessment of the influence of GW-SW interactions on the sp…
The contamination of groundwater by naturally occurring arsenic (As) in South and South East Asia has resulted in the exposure of an estimated 100 million people to hazardously high concentrations of this known carcinogen. Whilst the biogeochemical processes and mechanisms respo…
This research work was dedicated to the problem arising from the coexistence of arsenic and organic substances principally in the US (the Superfund Sites) and Bangladesh. Dissolved organic ions are strong competitors to arsenates, and because of their large size and slow kinetic…