Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Sorption of modified clay minerals in pore solution of fired clay brick under pulsed current
Highlights Entrance of new ions from poultice into contaminated fired clay brick was examined. Applied poultices affect salt removal efficiency. Feasibility/ effectiveness of pulsed DC current during electrokinetic desalination of fired clay brick were studied. There is no change in pH of brick surface after electrokinetic treatment using buffer elements in poultices.
Abstract This experimental study examines the influence of salt ions from poultice compositions entered into the contaminated fired clay brick with applied continuous and pulsed DC current across contaminated brick sample. The concentration of salt ions in the brick samples after electrokinetic (EK) treatment was also determined. For this purpose, the brick samples were intentionally contaminated with 15 g/kg of sodium chloride (NaCl) for 10 days. Subsequently, a series of experiments were conducted utilizing electrokinetic treatment by the application of different poultices. During electrokinetic experiments, a constant DC voltage of 9 V was applied across electrodes. The results show that by employing buffering elements in kaolin clay poultice; only 55 % of Cl− ions were removed with energy consumption of 219Wh in the presence of pulsed DC current, which is very low as compare to conventional continuous DC current having (up to 84 %) removal efficiency of Cl− ions but with energy consumption of 301Wh. According to existing results, further experimental development is needed to improve the desalination efficiency and reduce the energy consumption using pulsed DC current in order to expand the application scope of this work.
Sorption of modified clay minerals in pore solution of fired clay brick under pulsed current
Highlights Entrance of new ions from poultice into contaminated fired clay brick was examined. Applied poultices affect salt removal efficiency. Feasibility/ effectiveness of pulsed DC current during electrokinetic desalination of fired clay brick were studied. There is no change in pH of brick surface after electrokinetic treatment using buffer elements in poultices.
Abstract This experimental study examines the influence of salt ions from poultice compositions entered into the contaminated fired clay brick with applied continuous and pulsed DC current across contaminated brick sample. The concentration of salt ions in the brick samples after electrokinetic (EK) treatment was also determined. For this purpose, the brick samples were intentionally contaminated with 15 g/kg of sodium chloride (NaCl) for 10 days. Subsequently, a series of experiments were conducted utilizing electrokinetic treatment by the application of different poultices. During electrokinetic experiments, a constant DC voltage of 9 V was applied across electrodes. The results show that by employing buffering elements in kaolin clay poultice; only 55 % of Cl− ions were removed with energy consumption of 219Wh in the presence of pulsed DC current, which is very low as compare to conventional continuous DC current having (up to 84 %) removal efficiency of Cl− ions but with energy consumption of 301Wh. According to existing results, further experimental development is needed to improve the desalination efficiency and reduce the energy consumption using pulsed DC current in order to expand the application scope of this work.
Sorption of modified clay minerals in pore solution of fired clay brick under pulsed current
Ishaq, Mubashera (Autor:in) / Kamran, Kashif (Autor:in) / Ahad Hussain, Abdul (Autor:in) / Hina, Maryam (Autor:in)
21.09.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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