PREPARATION AND CHARACTERIZATION OF EGGSHELLS POWDERS TREATED WITH HYDROCHLORIC ACID AND SODIUM HYDROXIDE
The present paper investigates the possibility of increasing the porous and surface characteristics of eggshell powders. For this purpose, the collected waste eggshells were washed, dried at 90°C, crushed mechanically and sieved into a particle size smaller than 0.315 µm. The resulting powder was...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
The Association of Intellectuals for the Development of Science in Serbia – “The Serbian Academic Center”
2023-09-01
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| Series: | Advanced Engineering Letters |
| Subjects: | |
| Online Access: | https://www.adeletters.com/journals/2023/ADEL0031.pdf |
| _version_ | 1797248020880818176 |
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| author | Dimitrina Kiryakova Ganka Kolchakova |
| author_facet | Dimitrina Kiryakova Ganka Kolchakova |
| author_sort | Dimitrina Kiryakova |
| collection | DOAJ |
| description | The present paper investigates the possibility of increasing the porous and
surface characteristics of eggshell powders. For this purpose, the collected
waste eggshells were washed, dried at 90°C, crushed mechanically and
sieved into a particle size smaller than 0.315 µm. The resulting powder was
chemically modified by immersion in 1M solutions of HCl and NaOH. After
the treatment with the above reagents, the surface-treated eggshells were
characterized by a combination of XRD, FT-IR, BET and SEM analyses. The
XRD diffraction data and FT-IR spectra confirmed that the untreated
eggshells were composed mainly of calcium carbonate in the form of calcite.
After treatments on the surface of the particles were carried out, calcite did
not undergo structural changes. From the N2 adsorption-desorption
isotherms it was found that all of samples have nonporous or macro porous
structures. |
| first_indexed | 2024-04-24T20:07:57Z |
| format | Article |
| id | doaj.art-942df3d7400345d18c81fa66c1df8673 |
| institution | Directory Open Access Journal |
| issn | 2812-9709 |
| language | English |
| last_indexed | 2024-04-24T20:07:57Z |
| publishDate | 2023-09-01 |
| publisher | The Association of Intellectuals for the Development of Science in Serbia – “The Serbian Academic Center” |
| record_format | Article |
| series | Advanced Engineering Letters |
| spelling | doaj.art-942df3d7400345d18c81fa66c1df86732024-03-23T21:26:12ZengThe Association of Intellectuals for the Development of Science in Serbia – “The Serbian Academic Center”Advanced Engineering Letters2812-97092023-09-0123818710.46793/adeletters.2023.2.3.1PREPARATION AND CHARACTERIZATION OF EGGSHELLS POWDERS TREATED WITH HYDROCHLORIC ACID AND SODIUM HYDROXIDEDimitrina Kiryakova0Ganka Kolchakova1Department of Materials Science, Assen Zlatarov University, Burgas, BulgariaDepartment of Materials Science, Assen Zlatarov University, Burgas, BulgariaThe present paper investigates the possibility of increasing the porous and surface characteristics of eggshell powders. For this purpose, the collected waste eggshells were washed, dried at 90°C, crushed mechanically and sieved into a particle size smaller than 0.315 µm. The resulting powder was chemically modified by immersion in 1M solutions of HCl and NaOH. After the treatment with the above reagents, the surface-treated eggshells were characterized by a combination of XRD, FT-IR, BET and SEM analyses. The XRD diffraction data and FT-IR spectra confirmed that the untreated eggshells were composed mainly of calcium carbonate in the form of calcite. After treatments on the surface of the particles were carried out, calcite did not undergo structural changes. From the N2 adsorption-desorption isotherms it was found that all of samples have nonporous or macro porous structures.https://www.adeletters.com/journals/2023/ADEL0031.pdfwaste eggshellscalcium carbonatetreatmentsurface characteristicspore volumespecific surface areastructure |
| spellingShingle | Dimitrina Kiryakova Ganka Kolchakova PREPARATION AND CHARACTERIZATION OF EGGSHELLS POWDERS TREATED WITH HYDROCHLORIC ACID AND SODIUM HYDROXIDE Advanced Engineering Letters waste eggshells calcium carbonate treatment surface characteristics pore volume specific surface area structure |
| title | PREPARATION AND CHARACTERIZATION OF EGGSHELLS POWDERS TREATED WITH HYDROCHLORIC ACID AND SODIUM HYDROXIDE |
| title_full | PREPARATION AND CHARACTERIZATION OF EGGSHELLS POWDERS TREATED WITH HYDROCHLORIC ACID AND SODIUM HYDROXIDE |
| title_fullStr | PREPARATION AND CHARACTERIZATION OF EGGSHELLS POWDERS TREATED WITH HYDROCHLORIC ACID AND SODIUM HYDROXIDE |
| title_full_unstemmed | PREPARATION AND CHARACTERIZATION OF EGGSHELLS POWDERS TREATED WITH HYDROCHLORIC ACID AND SODIUM HYDROXIDE |
| title_short | PREPARATION AND CHARACTERIZATION OF EGGSHELLS POWDERS TREATED WITH HYDROCHLORIC ACID AND SODIUM HYDROXIDE |
| title_sort | preparation and characterization of eggshells powders treated with hydrochloric acid and sodium hydroxide |
| topic | waste eggshells calcium carbonate treatment surface characteristics pore volume specific surface area structure |
| url | https://www.adeletters.com/journals/2023/ADEL0031.pdf |
| work_keys_str_mv | AT dimitrinakiryakova preparationandcharacterizationofeggshellspowderstreatedwithhydrochloricacidandsodiumhydroxide AT gankakolchakova preparationandcharacterizationofeggshellspowderstreatedwithhydrochloricacidandsodiumhydroxide |