Study of physical and dielectric properties of bio-waste-derived synthetic wollastonite
The aim of this study is to fabricate synthetic wollastonite from chicken eggshells (CES) and rice husk ash (RHA) through an economical solid-state route. Wollastonite was formulated with a stoichiometric amount of calcined eggshells (~99% CaO) and heat-treated RHA (~93% SiO2) as ingredients and cal...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2018-07-01
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| Series: | Journal of Asian Ceramic Societies |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/21870764.2018.1508549 |
| _version_ | 1818461905192222720 |
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| author | Sk S. Hossain P. K. Roy |
| author_facet | Sk S. Hossain P. K. Roy |
| author_sort | Sk S. Hossain |
| collection | DOAJ |
| description | The aim of this study is to fabricate synthetic wollastonite from chicken eggshells (CES) and rice husk ash (RHA) through an economical solid-state route. Wollastonite was formulated with a stoichiometric amount of calcined eggshells (~99% CaO) and heat-treated RHA (~93% SiO2) as ingredients and calcined at 1000, 1100, 1150 and 1200°C for 120 min. The XRD spectrum revealed single-phase para-wollastonite (monoclinic, P21/a) after annealing at 1100°C and 1200°C with calcined powder contents comprising mainly a phase of pseudo-wollastonite (anorthic, C-1). For dielectric measurement, only the para- and pseudo-wollastonite pressed powder was sintered at 1100 and 1200°C for 240 min. The obtained results showed a stable, low dielectric constant (ε׳) of about 4.5 to 6, losses (tanδ) of about 0.0026 to 0.00361 and resistivity of around 6–9 × 108 (Ώ-cm) at 100 kHz. These are highly promising characteristics which suggest that waste-derived synthetic wollastonite may be useable as an ingredient in electrical porcelain applications. |
| first_indexed | 2024-12-14T23:53:34Z |
| format | Article |
| id | doaj.art-566e60a8bc0144debf9bcf2e72c6e3e9 |
| institution | Directory Open Access Journal |
| issn | 2187-0764 |
| language | English |
| last_indexed | 2024-12-14T23:53:34Z |
| publishDate | 2018-07-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Asian Ceramic Societies |
| spelling | doaj.art-566e60a8bc0144debf9bcf2e72c6e3e92022-12-21T22:43:10ZengTaylor & Francis GroupJournal of Asian Ceramic Societies2187-07642018-07-016328929810.1080/21870764.2018.15085491508549Study of physical and dielectric properties of bio-waste-derived synthetic wollastoniteSk S. Hossain0P. K. Roy1IIT (BHU)IIT (BHU)The aim of this study is to fabricate synthetic wollastonite from chicken eggshells (CES) and rice husk ash (RHA) through an economical solid-state route. Wollastonite was formulated with a stoichiometric amount of calcined eggshells (~99% CaO) and heat-treated RHA (~93% SiO2) as ingredients and calcined at 1000, 1100, 1150 and 1200°C for 120 min. The XRD spectrum revealed single-phase para-wollastonite (monoclinic, P21/a) after annealing at 1100°C and 1200°C with calcined powder contents comprising mainly a phase of pseudo-wollastonite (anorthic, C-1). For dielectric measurement, only the para- and pseudo-wollastonite pressed powder was sintered at 1100 and 1200°C for 240 min. The obtained results showed a stable, low dielectric constant (ε׳) of about 4.5 to 6, losses (tanδ) of about 0.0026 to 0.00361 and resistivity of around 6–9 × 108 (Ώ-cm) at 100 kHz. These are highly promising characteristics which suggest that waste-derived synthetic wollastonite may be useable as an ingredient in electrical porcelain applications.http://dx.doi.org/10.1080/21870764.2018.1508549Wollastonitewaste materialseggshellsrice husk ashdielectric properties |
| spellingShingle | Sk S. Hossain P. K. Roy Study of physical and dielectric properties of bio-waste-derived synthetic wollastonite Journal of Asian Ceramic Societies Wollastonite waste materials eggshells rice husk ash dielectric properties |
| title | Study of physical and dielectric properties of bio-waste-derived synthetic wollastonite |
| title_full | Study of physical and dielectric properties of bio-waste-derived synthetic wollastonite |
| title_fullStr | Study of physical and dielectric properties of bio-waste-derived synthetic wollastonite |
| title_full_unstemmed | Study of physical and dielectric properties of bio-waste-derived synthetic wollastonite |
| title_short | Study of physical and dielectric properties of bio-waste-derived synthetic wollastonite |
| title_sort | study of physical and dielectric properties of bio waste derived synthetic wollastonite |
| topic | Wollastonite waste materials eggshells rice husk ash dielectric properties |
| url | http://dx.doi.org/10.1080/21870764.2018.1508549 |
| work_keys_str_mv | AT skshossain studyofphysicalanddielectricpropertiesofbiowastederivedsyntheticwollastonite AT pkroy studyofphysicalanddielectricpropertiesofbiowastederivedsyntheticwollastonite |