Civil Engineering / İnşaat Mühendisliği

Permanent URI for this collectionhttps://hdl.handle.net/11147/13

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Subject: search.filters.subject.Water qualityWoS Q: search.filters.wosQuartile.N/A

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Now showing 1 - 7 of 7
  • Conference Object
    14th of the International Conference on Hydroscience and Engineering, Iche 2022: Proceeding Book
    (Izmir Institute of Technology, 2022) Elçi, Şebnem; Bombar, Gökçen
    14th of the International Conference on Hydroscience & Engineering, ICHE 2022 will be held in Izmir, Turkey on 26-27 May, 2022. The International Conference on Hydroscience & Engineering began in Washington DC in 1993, and followed by Beijing hosted ICHE in 1995, Cottbus (1998), Seoul (2000), Warsaw (2002), Brisbane (2004), Philadelphia (2006), Nagoya (2008), Chennai (2010), Orlando (2012), Hamburg (2014) Tainan (2016) and Chongqing (2018). These conferences provided a common ground researchers and engineers to report and discuss the latest scientific advancements and practitioner’s solutions in hydroscience and engineering. ICHE 2022 conference aims to bring together researchers and practicing engineers to share the latest scientific and technological advancements in hydroscience and engineering, and will provide networking opportunities for future activities. Participants will be able to hear experts in the field discuss the latest achievements in issues relevant to Hydro-Engineering for Sustainable Development.
  • Conference Object
    Hydrogeochemical Characteristics of Acidic Water Sources Around Can Region, Biga Peninsula, Nw Turkey
    (Muğla Sıtkı Koçman Üniversitesi, 2014) Şanlıyüksel Yücel, Deniz; Baba, Alper
    Acid rock drainage (ARD) is one of the major sources of water pollution in some countries. Densely generation of ARD have been seen around Can Region (Biga Peninsula-NW Turkey) due to altered (silicification, argillic alteration) volcanic rocks which contain sulfide minerals and specially pyrite and there is inadequate availability of neutralizing carbonate minerals. Forty water samples (including 17 drilling, 5 drinking water, and 18 spring water) were collected from 2011 to 2012. The result show that pH of water samples is lower than 5 in most part of study area.
  • Conference Object
    Assessment of Water Quality Related To Lead/Zinc Mines in Umurbey Dam Basin, Northwestern Turkey
    (International Water Association, 2017) Şanlıyüksel Yücel, Deniz; Baba, Alper
    The purpose of this study is to determine hydrochemical properties of the water resources and to assess the potential environmental consequence of the mining activities in Koru and Tesbihdere lead/zinc mine districts, and investigate detrimental effects caused by mining activities on the water resources and sediment quality in Umurbey dam basin (Biga Peninsula, NW Turkey). Cadmium, Cu, Fe, Mn, Pb and Zn concentrations in sediments downstream of Tesbihdere and Koru mines and in Umurbey dam sediments are higher than average values of world river sediments.
  • Conference Object
    Citation - WoS: 2
    Citation - Scopus: 2
    Arsenic in Groundwater in Western Anatolia, Turkey: a Review
    (University of Silesia Press, 2010) Gündüz, Orhan; Baba, Alper; Elpit, Handan
    Occurrence of arsenic (As) in groundwater has been a major problem worldwide for the last hundred years. Considering its toxic effects on human health, the presence of elevated levels of arsenic in groundwater resources used in drinking water supply has been an active research field throughout the world (Van Halem et al., 2009). In this regard, case studies from Bangla-desh, India, Nepal, El Salvador, Ecuador, Honduras, Mexico, Chile, China, Canada, Argentina, Peru, Taiwan, United States, Bolivia and Turkey have been documented with regards to the detection of natural levels in groundwater, the occurrence and distribution mechanisms, the human health effects and the in-situ and ex-situ treatment techniques (Jean et al., 2010). In many of these locations, arsenic is naturally found in the subsurface strata within volcanic and sedimentary formations as well as in areas of geothermal systems related to tectonic activity. Western Anatolia in Turkey is one such area of complex geology with active tectonics and high geothermal potential. This natural setting serves as a suitable environment for the presence of high levels of arsenic in subsurface waters. Based on these fundamentals, this study presents a general overview of arsenic presence in western Anatolia.
  • Conference Object
    An Integrated Assessment of Water Quality in an Arsenic Containing Aquifer: Milestones From Hydrogeology To Public Health
    (American Society of Civil Engineers (ASCE), 2012) Gündüz, Orhan; Şimşek, Celalettin; Elçi, Alper; Baba, Alper; Bakar, Çoşkun; Gürleyük, Hakan; Çakır, A.; Mutlu, Merdiye
    A multi-disciplinary research is being conducted in Simav Plain, Turkey where an arsenic containing aquifer is at the center of attention. The study is not only aimed to understand the sources and mechanisms of the presence of high arsenic levels in groundwater but also to determine the associated consequences with regards to human health. The high arsenic levels in most groundwater (N=33, avg. 162 ppb), surface water (N=9, avg. 76.6 ppb) and geothermal water (N=3, avg. 406 ppb) samples are strongly related to high occurrences of arsenic in rocks and soils of the plain, which range between 7.1 and 833.9 ppm with an average of 49 ppm. These values correspond to several orders of magnitude higher than international standards and world averages in water and soil, respectively. With this motivation, this research also focuses on human health in the study area associated with exposure to these high arsenic levels via numerous pathways. Consequently, more than 1000 individuals were personally surveyed by public health specialists to determine an inventory of diseases in the area. Furthermore, a verbal autopsy study was also conducted with relatives of the deceased, which were further verified with hospital records, to understand the underlying death cause. As a result, certain cancer rates were found to exceed national averages and the results statistically demonstrated a potential link with high arsenic levels mainly through oral exposure.
  • Conference Object
    Effect of Urbanization on Groundwater Resources of Izmir City
    (İZSU, 2017) Baba, Alper; Yazdani, Hamidreza
    İzmir is the third largest city in Turkey. Fifty­six percent of the drinking water of İzmir city is provided from groundwater resources. Halkapınar (located on Bornova Plain) is one of the important groundwater resources areas. This region is providing 16 % of İzmir drinking resources. The water withdraws from the Halkapınar wells is about 30 million m3 in recent years. The groundwater levels of Bornova plain are range from 1 m to 10m. This plain had been used as agricultural lands until the 1950s, while today they have been opened for settlement. In 1965 Bornova accommodated half of its population in rural areas after receiving so much immigration. It was inevitable to open the city­centre to housing and to consider the surrounding village areas as urban areas. By the year 2000, the rural population had already been melted into the urban population. The agricultural areas in rural parts of the country will have completely disappeared in 50 years' time. Much of the surface of the plain is rendered impermeable by buildings, roads and surface coverings. Because of this covering, groundwater recharge is reduced and increases and accelerates runoff the plain. The groundwater recharge from precipitation was about 27 % in 1925, but this amount dropped to 13% in 2012. Groundwater recharge from precipitation will be 1% in 2030. Hydrodynamic of plain is change because of excessive urbanization. Groundwater level of the plain still high because tall building makes a barrier for groundwater recharge points.
  • Conference Object
    Tracing the Relative Distribution of Arsenic Species in Groundwater and Its Association With Soil Arsenic Levels in the Simav Graben Area, Turkey
    (2016) Gündüz, Orhan; Şimşek, Celalettin; Elçi, Alper; Baba, Alper; Gürleyük, Hakan
    A comprehensive hydrogeochemical assessment was conducted in the Simav Plain, Turkey where major health concerns were reported and elevated arsenic (As) levels were previously found. Boreholes drilled in the plain were used to take core samples from the alluvial aquifer from which most groundwater was extracted. The results of core analyses revealed several orders of magnitude higher values than global average. Groundwater samples were later collected from these boreholes and analyzed for arsenic and its species as well as other related hydrochemical parameters. The results of groundwater quality assessment revealed that the groundwater in the plain was enriched with arsenic that exceed 1 mg/L level and was mostly under reducing conditions. The dominant arsenic specie in groundwater was arsenite in more than 70% of all samples.