NDLI: Behavior of high-energy-milling-activated eggshells during thermal treatment

Content Provider	Springer Nature Link
Author	Petkova, V. Kostova, B. Shopska, M. Kadiv, G. Baláž, M. Baláž, P.
Copyright Year	2016
Abstract	The main object of investigations in this work is the chicken eggshells. The effective high-energy milling (HEM) treatment and utilization of chicken eggshells (ES) as a bio-waste waste have been investigated in environmental and economic interest. The composition of the ES includes mainly inorganic (94 % calcium carbonate as calcite, 1 % calcium phosphate and 1 % magnesium carbonate) as well as organic matter (4 %). During HEM, the mechanical activation process takes place, which leads to improvement of materials properties. The HEM-activated ES samples were characterized by thermal analysis, Fourier transform infrared spectroscopy and scanning electron microscopy. The decarbonization was carried out using the thermal methods with Ar flow gas. We established that the thermal properties of the ES samples change considerably due to HEM treatment. The changes appear as: (1) shifting of decarbonization temperature of HEM-activated samples to lower temperature of about 30 °C; (2) decrease in mass losses and temperatures of decomposition with the increasing milling time; and (3) decrease in DTA peak areas for the all HEM-activated samples. As was shown earlier, the HEM treatment has a beneficial effect on the application of the ES. They can be used as: sorbents and soil improvers (separately or as mixtures with apatite minerals or appropriate technogenic wastes, containing main for the plants nutrients—N, P, K, S, Ca et al.).
Starting Page	615
Ending Page	623
Page Count	9
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	127
Issue Number	1
e-ISSN	15882926
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-07-26
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Chicken eggshell High-energy milling Thermal behavior Ecology Physical Chemistry Analytical Chemistry Polymer Sciences Inorganic Chemistry Measurement Science and Instrumentation
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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