Transforming Dental Mould Waste (DMW) Into High Purity Calcium Source By Chromium Removal Through Alkaline Caustic Leaching (ACL) Using Ultrasonic Technology
The dumping of dental mould waste (DMW) into landfill is increasing every year and IPPT Bertam, Penang also have a lot of DMW that need to dump every month. As we know, DMW is recognised as gypsum, which has high calcium content. Thus, recycling of DMW seems as a sustainable approach to obtain alt...
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| Format: | Monograph |
| Language: | English |
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Universiti Sains Malaysia
2022
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| Online Access: | http://eprints.usm.my/56703/1/Transforming%20Dental%20Mould%20Waste%20%28DMW%29%20Into%20High%20Purity%20Calcium%20Source%20By%20Chromium%20Removal%20Through%20Alkaline%20Caustic%20Leaching%20%28ACL%29%20Using%20Ultrasonic%20Technology_Nurulaini%20Mohamad%20Yusoff.pdf |
| _version_ | 1797013704033697792 |
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| author | Mohamad Yusoff, Nurulaini |
| author_facet | Mohamad Yusoff, Nurulaini |
| author_sort | Mohamad Yusoff, Nurulaini |
| collection | USM |
| description | The dumping of dental mould waste (DMW) into landfill is increasing every year and IPPT Bertam, Penang also have a lot of DMW that need to dump every month. As we know, DMW is recognised as gypsum, which has high calcium content. Thus,
recycling of DMW seems as a sustainable approach to obtain alternative source of calcium, which can further be used in bioceramics applications. This calcium source can
then be used as the main precursor in producing akermanite bioceramics. This study can be divided into two parts: (1) synthesis of calcium hydroxide using different frequencies
of ultrasonic technology (i.e. 40, 132, 360 kHz) by removing the chromium content in DMW (2) fabrication of akermanite bioceramics using calcium source from DMW sintered at three temperatures (1200,1225 and 1250°C). The results obtained showed that 40kHz is the most efficient frequency in removing chromium content from DMW, resulting in higher purity of calcium hydroxide obtained. This finding supports the theory
where lower ultrasonic frequency is commonly used for coarser powders. Meanwhile, the optimum sintering temperature in producing akermanite ceramics is determined to be at
1225°C. |
| first_indexed | 2024-03-06T16:05:49Z |
| format | Monograph |
| id | usm.eprints-56703 |
| institution | Universiti Sains Malaysia |
| language | English |
| last_indexed | 2024-03-06T16:05:49Z |
| publishDate | 2022 |
| publisher | Universiti Sains Malaysia |
| record_format | dspace |
| spelling | usm.eprints-567032023-01-31T09:22:09Z http://eprints.usm.my/56703/ Transforming Dental Mould Waste (DMW) Into High Purity Calcium Source By Chromium Removal Through Alkaline Caustic Leaching (ACL) Using Ultrasonic Technology Mohamad Yusoff, Nurulaini T Technology TN Mining Engineering. Metallurgy The dumping of dental mould waste (DMW) into landfill is increasing every year and IPPT Bertam, Penang also have a lot of DMW that need to dump every month. As we know, DMW is recognised as gypsum, which has high calcium content. Thus, recycling of DMW seems as a sustainable approach to obtain alternative source of calcium, which can further be used in bioceramics applications. This calcium source can then be used as the main precursor in producing akermanite bioceramics. This study can be divided into two parts: (1) synthesis of calcium hydroxide using different frequencies of ultrasonic technology (i.e. 40, 132, 360 kHz) by removing the chromium content in DMW (2) fabrication of akermanite bioceramics using calcium source from DMW sintered at three temperatures (1200,1225 and 1250°C). The results obtained showed that 40kHz is the most efficient frequency in removing chromium content from DMW, resulting in higher purity of calcium hydroxide obtained. This finding supports the theory where lower ultrasonic frequency is commonly used for coarser powders. Meanwhile, the optimum sintering temperature in producing akermanite ceramics is determined to be at 1225°C. Universiti Sains Malaysia 2022-08-17 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/56703/1/Transforming%20Dental%20Mould%20Waste%20%28DMW%29%20Into%20High%20Purity%20Calcium%20Source%20By%20Chromium%20Removal%20Through%20Alkaline%20Caustic%20Leaching%20%28ACL%29%20Using%20Ultrasonic%20Technology_Nurulaini%20Mohamad%20Yusoff.pdf Mohamad Yusoff, Nurulaini (2022) Transforming Dental Mould Waste (DMW) Into High Purity Calcium Source By Chromium Removal Through Alkaline Caustic Leaching (ACL) Using Ultrasonic Technology. Project Report. Universiti Sains Malaysia, Pusat Pengajian Kejuruteraan Bahan dan Sumber Mineral. (Submitted) |
| spellingShingle | T Technology TN Mining Engineering. Metallurgy Mohamad Yusoff, Nurulaini Transforming Dental Mould Waste (DMW) Into High Purity Calcium Source By Chromium Removal Through Alkaline Caustic Leaching (ACL) Using Ultrasonic Technology |
| title | Transforming Dental Mould Waste (DMW) Into High Purity Calcium Source By Chromium Removal Through Alkaline Caustic Leaching (ACL) Using Ultrasonic Technology |
| title_full | Transforming Dental Mould Waste (DMW) Into High Purity Calcium Source By Chromium Removal Through Alkaline Caustic Leaching (ACL) Using Ultrasonic Technology |
| title_fullStr | Transforming Dental Mould Waste (DMW) Into High Purity Calcium Source By Chromium Removal Through Alkaline Caustic Leaching (ACL) Using Ultrasonic Technology |
| title_full_unstemmed | Transforming Dental Mould Waste (DMW) Into High Purity Calcium Source By Chromium Removal Through Alkaline Caustic Leaching (ACL) Using Ultrasonic Technology |
| title_short | Transforming Dental Mould Waste (DMW) Into High Purity Calcium Source By Chromium Removal Through Alkaline Caustic Leaching (ACL) Using Ultrasonic Technology |
| title_sort | transforming dental mould waste dmw into high purity calcium source by chromium removal through alkaline caustic leaching acl using ultrasonic technology |
| topic | T Technology TN Mining Engineering. Metallurgy |
| url | http://eprints.usm.my/56703/1/Transforming%20Dental%20Mould%20Waste%20%28DMW%29%20Into%20High%20Purity%20Calcium%20Source%20By%20Chromium%20Removal%20Through%20Alkaline%20Caustic%20Leaching%20%28ACL%29%20Using%20Ultrasonic%20Technology_Nurulaini%20Mohamad%20Yusoff.pdf |
| work_keys_str_mv | AT mohamadyusoffnurulaini transformingdentalmouldwastedmwintohighpuritycalciumsourcebychromiumremovalthroughalkalinecausticleachingaclusingultrasonictechnology |