DETECTION OF NITRATES(V) AND SULFATES(VI) BY UV-VIS SPECTROPHOTOMETRY METHOD IN USED GREEN SAND BONDED BY BENTONITE WITH MODIFIED STARCH ADDITION

Authors

Beata Grabowska AGH University of Science and Technology
Żaneta Kurleto-Kozioł AGH University of Science and Technology
Łukasz Szymański AGH University of Science and Technology
Karolina Kaczmarska AGH University of Science and Technology
Artur Bobrowski AGH University of Science and Technology

DOI:

https://doi.org/10.7494/mafe.2016.42.4.203

Keywords:

used molding sands, green sand, starch additions, elution, spectrophotometry UV-Vis

Abstract

The research results (SEM, UV-Vis) that contain a part of the work connected with determining the influence of a modified starch addition on the physical and chemical property changes of green sands (including the emission levels of harmful substances from the used molding sands formed as a result of the liquid metal pouring of molds) are presented in this paper. A surface analysis (SEM) was performed for the fresh molding sands and used molding sands with and without modified starch samples. On the bases of the received microscopic images, the impact of the temperature factor on the morphology of the molding sand samples after the liquid metal pouring process are assessed. In the second part of the performed work on the UV-Vis research, eluates from two used molding sands (green sand [sand number 1] and green sand with the addition of a modified starch [sand number 2]) were tested for nitrate and sulfate content. In order to determine whether the level of nitrate and sulfate elusion from the used molding sands is permissible, the received results were compared with the Minister of Environment’s regulations concerning the requirements of surface waters used for supplying the population with potable water.

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Author Biographies

Beata Grabowska, AGH University of Science and Technology

Department of Foundry Processes Engineering

Żaneta Kurleto-Kozioł, AGH University of Science and Technology

Department of Foundry Processes Engineering

Łukasz Szymański, AGH University of Science and Technology

Department of Foundry Processes Engineering

Karolina Kaczmarska, AGH University of Science and Technology

Department of Foundry Processes Engineering

Artur Bobrowski, AGH University of Science and Technology

Department of Foundry Processes Engineering

References

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http://xenon.com.pl/pl/polvitex_z.php [12.02.2016]

PN-EN 12457-4:2006 Charakteryzowanie odpadów. Wymywanie. Badanie zgodności w odniesieniu do wymywania ziarnistych materiałów odpadowych i osadów. Część 1: Jednostopniowe badanie porcjowe przy stosunku cieczy do fazy stałej 10 l/kg w przypadku materiałów o wielkości cząstek poniżej 10 mm (bez redukcji lub z redukcją wielkości)

Rozporządzenie Ministra Środowiska z dnia 27 listopada 2002 r. w sprawie wymagań, jakim powinny odpowiadać wody powierzchniowe wykorzystywane do zaopatrzenia ludności w wodę przeznaczoną do spożycia. Dz.U. 2002 nr 204 poz. 1728

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Published

2019-10-09

How to Cite

Grabowska, B., Kurleto-Kozioł, Żaneta, Szymański, Łukasz, Kaczmarska, K., & Bobrowski, A. (2019). DETECTION OF NITRATES(V) AND SULFATES(VI) BY UV-VIS SPECTROPHOTOMETRY METHOD IN USED GREEN SAND BONDED BY BENTONITE WITH MODIFIED STARCH ADDITION. Metallurgy and Foundry Engineering, 42(4), 203. https://doi.org/10.7494/mafe.2016.42.4.203

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Issue

Vol. 42 No. 4 (2016)

Section

Articles

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