Physico-Geometric Approach to the Processes of Thermal Decomposition of the Guinea Fowl (Numida meleagris) Eggshell’s Bionanocomposites

Bordunova, O. G.; Samokhina, Y. A.; Dolbanosova, Rimma V.; Patreva, Lyudmila S.; Cherniy, Nikolay; Chekh, Oleksandr; Лобода, В. Б.; Danilchenko, Sergey; Chivanov, Vadym

doi:10.1109/nap51885.2021.9568520

Cited by 2 publications

(1 citation statement)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There is a certain pattern in our studies; the more concrete is affected by microorganisms and has a destroyed loose structure [28], the faster it undergoes destruction when heated at lower temperatures with a low intensity of carbonate release. The authors of [29] in their laboratory studies also found that there was a decrease in calcium content by about 41 % after the growth of fungi on concrete.…”

Section: Discussion Of Results Of Studying the Biochemical Corrosion ...mentioning

confidence: 75%

Reducing the biogenic corrosion of concrete in a pigsty by using disinfectants

Шкромада

Фотіна

Dudnyk

et al. 2022

EEJET

View full text Add to dashboard Cite

The object of this study is the regularity of changes in the biogenic destructive effect of microorganisms on the concrete structural elements of livestock facilities due to the use of the original liquid phase mixture of disinfectant based on aldehyde and surfactant. Microorganisms use construction materials as a substrate for growth and nutrition; they produce citric acid, which leads to a change in the composition and morphology of hydrated cement new formations. The composition of the microflora of the pigsty has been determined, and the minimum concentration of disinfectant based on glutaraldehyde and didecyl dimethyl ammonium chloride was found. By the TPD MS method, a decrease in the intensity of carbon dioxide (CO2) release in concrete samples during the heating of the sample to 900 °C was proved, compared to the control intact corrosion sample. Electron microscopy of concrete samples shows the presence of destructive changes and colonies of micromycetes. It was established that calcite was intensively released in the control sample of concrete, which retained its integrity and was not subjected to corrosion when heated to a temperature of 600 °C. Electron microscopy confirms the preservation of the homogeneous structure of concrete. The use of a disinfectant based on glutaraldehyde and didecyl dimethyl ammonium chloride at a concentration of 1 % destroys colonies of micromycetes, 2 % – the shell of microorganisms, and 3 % – biofilm. Treatment of concrete with a disinfectant at a concentration of 3 % destroys microorganisms Aspergillus fumigatus and Penicillium oxalicum, inhibits the process of biological corrosion of concrete, and strengthens the structure of concrete. The results of the experiment can be applied to inhibit the corrosion of concrete and extend the life of building structures made of concrete through the use of a disinfectant based on aldehyde and didecyl dimethyl ammonium chloride at a concentration of 3 %.

show abstract

Section: Discussion Of Results Of Studying the Biochemical Corrosion ...mentioning

confidence: 75%