Effect of high sulfate concentration on the corrosivity: a case study from groundwater in Harran Plain, Turkey

2009 ◽  
Vol 166 (1-4) ◽  
pp. 595-607 ◽  
Author(s):  
Ayşe Dilek Atasoy ◽  
Mehmet Irfan Yesilnacar
Keyword(s):  
Sulfate Concentration ◽  
Harran Plain ◽  
High Sulfate

scholarly journals An Experimental Study on Strength and Durability for Utilization of Fly Ash in Concrete Mix

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Abdulhalim Karaşin ◽  
Murat Doğruyol
Keyword(s):  
Experimental Study ◽  
Compressive Strength ◽  
Fly Ash ◽  
Underground Water ◽  
Hardened Concrete ◽  
Concrete Deterioration ◽  
High Sulfate ◽  
Strength And Durability ◽  
Mineral Additives

The intention of this study is to discuss the variation of concrete exposed to high sulfate environment of a specific region with respect to strength and durability. Secondly, it is aimed to discuss the possibility of reducing the cement amount in construction of concrete structures. For this purpose, laboratory tests were conducted to investigate compressive strength and sulfate resisting capacity of concrete by using 20% fly ash as mineral additives, waste materials, instead of cement. As a case study the soil samples, received from Siirt Province areas which contain high sulfate rate, have been compared with respect to sulfate standard parameters of TS 12457-4. In such regions contact of underground water seep into hardened concrete substructures poses a risk of concrete deterioration. In order to determine the variation of strength and durability for concrete exposed to such aggressive environment, the samples were rested in a solution of Na2SO4(150 g/lt) in accordance with ASTM C 1012 for the tests. As a result of this experimental study, it is noted that the use of 20% fly ash, replacement material instead of cement, has no significant effect on compressive strength of concrete over time.

Electrocoagulation for nitrate removal in groundwater of intensive agricultural region: a case study of Harran plain, Turkey

2021 ◽  
Vol 80 (5) ◽  
Author(s):  
Benan Yazici Karabulut ◽  
Ayse Dilek Atasoy ◽  
Orhan Taner Can ◽  
Mehmet Irfan Yesilnacar
Keyword(s):  
Nitrate Removal ◽  
Agricultural Region ◽  
Harran Plain

scholarly journals Autohydrogenotrophic Denitrification Using the Membrane Biofilm Reactor for Removing Nitrate from High Sulfate Concentration of Water

Archaea ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-7
Author(s):  
Yanhao Zhang ◽  
Haohan Zhang ◽  
Zhibin Zhang ◽  
Yuchen Wang ◽  
Taha Marhaba ◽  
...  
Keyword(s):  
Electron Donor ◽  
Distribution Ratio ◽  
Biofilm Reactor ◽  
Denitrification Rate ◽  
Sulfate Concentration ◽  
Molecular Microbiology ◽  
Membrane Biofilm Reactor ◽  
Loading Ratio ◽  
High Sulfate

This study investigated the performance of an autohydrogenotrophic membrane biofilm reactor (MBfR) to remove nitrate from water with high sulfate concentrations. The results of simulated running showed that TN removal could be over than 98.8% with the maximum denitrification rate of 134.6 g N/m3 d under the conditions of the influent sulfate concentrations of 300 mg SO42−/l. The distribution ratio of H2 electron donor for nitrate and sulfate was 70.0 : 26.9 at the high influent loading ratio of sulfate/nitrate of 853.3 g SO42−/m3 d : 140.5 g N/m3 d, which indicated that denitrification bacteria (DB) were normally dominated to complete H2 electron with sulfate bacteria (SRB). The results of molecular microbiology analysis showed that the dominated DB were Rhodocyclus and Hydrogenophaga, and the dominated SRB was Desulfohalobium, under the high influent sulfate concentrations.

scholarly journals High sulfate concentration enhances iron mobilization from organic soil to water

2019 ◽  
Vol 144 (3) ◽  
pp. 245-259
Author(s):  
Caroline Björnerås ◽  
Martin Škerlep ◽  
Dimitrios Floudas ◽  
Per Persson ◽  
Emma S. Kritzberg
Keyword(s):  
Organic Soil ◽  
Sulfate Concentration ◽  
Iron Mobilization ◽  
High Sulfate

scholarly journals ANAEROBIC DIGESTION OF WASTEWATER WITH HIGH SULFATE CONCENTRATION USING MICRO-AERATION AND NATURAL ZEOLITES

2016 ◽  
Vol 33 (4) ◽  
pp. 743-752 ◽  
Author(s):  
S. Montalvo ◽  
H. Prades ◽  
M. González ◽  
P. Pérez ◽  
L. Guerrero ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Sulfate Concentration ◽  
Natural Zeolites ◽  
High Sulfate

scholarly journals MUDPOTS AT STEFANOS HYDROTHERMAL CRATER OF NISYROS VOLCANO. AN INSIGHT AT THE HYDROTHERMAL PROCESSES OF AN ACTIVE VOLCANO

2017 ◽  
Vol 50 (4) ◽  
pp. 1838
Author(s):  
C. Kanellopoulos ◽  
N. Xirokostas
Keyword(s):  
High Temperature ◽  
Elemental Sulfur ◽  
Hot Spring ◽  
Active Volcano ◽  
Acidic Ph ◽  
Sulfate Concentration ◽  
Hydrothermal Processes ◽  
Active Tectonic ◽  
High Sulfate ◽  
High Concentrations

On Nisyros island as a result of the volcanic activity and active tectonic, a hydrothermal system develops and it is expressed by 5 types of surface manifestations: i) thermal springs, ii) fumaroles iii) hydrothermal craters, iv) hot grounds and v) mudpots. In general, a mudpot could be described as an acidic hot spring and fumarole with limited water which it is formed in high temperature geothermal areas. Water sample and depositions of mudpots collected, analyzed and studied from Stefanos hydrothermal crater, which is the only site on Nisyros Island, where mudpots occur. Mudpots water is very acidic (pH=2.4), with high sulfate concentration (1375mg/L), due to the H2S(gas) and temperature near the boiling point. As a result, elemental sulfur is found inside the depositions alongside with products of the hydrothermal alteration of the surrounding rocks. In the water and in the depositions were found high concentrations in several elements (e.g. in water: 55mg/L Fe; 19.5mg/L Zn, in depositions: 430mg/Kg Pb; 72mg/Kg Cu; 60mg/Kg Cr) reflecting the alterations processes which are taking place.

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