Aqua regia as a competitive leaching agent for metallic impurity removal from rice husk
Rice husk is widely recognized as significant biomass containing cellulose, lignin and silica. Usually, rice husk is combusted for energy purposes but it contributes to severe environmental pollution. Therefore, the integrated components of rice husk (i.e. silica) can be extracted and converted...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2022
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| Online Access: | http://journalarticle.ukm.my/20589/1/13.pdf |
| _version_ | 1796933279188779008 |
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| author | Akhter, Faheem Ahmed Soomro, Suhail Inglezakis, Vassilis J. |
| author_facet | Akhter, Faheem Ahmed Soomro, Suhail Inglezakis, Vassilis J. |
| author_sort | Akhter, Faheem |
| collection | UKM |
| description | Rice husk is widely recognized as significant biomass containing cellulose, lignin and silica. Usually, rice husk is combusted
for energy purposes but it contributes to severe environmental pollution. Therefore, the integrated components of rice husk
(i.e. silica) can be extracted and converted into value-added products. However, the metallic impurities must be removed
before further extraction. Generally, rice husk is leached with conventional acids such as HCl and nitric acid, however, the
present study has used aqua regia and compared the results with conventional acids. The leached rice husk samples were
characterized using TGA, SEM and EDX. The results of the present work indicate that the aqua regia carries a significant
leaching potential to remove metallic impurities from rice husk with 1 M and 2 M solutions removing more than 98% and
99% of impurities respectively. However, its brief chemical stability compels it to be prepared and used immediately. |
| first_indexed | 2024-03-06T04:44:47Z |
| format | Article |
| id | ukm.eprints-20589 |
| institution | Universiti Kebangsaan Malaysia |
| language | English |
| last_indexed | 2024-03-06T04:44:47Z |
| publishDate | 2022 |
| publisher | Penerbit Universiti Kebangsaan Malaysia |
| record_format | dspace |
| spelling | ukm.eprints-205892022-11-28T12:22:01Z http://journalarticle.ukm.my/20589/ Aqua regia as a competitive leaching agent for metallic impurity removal from rice husk Akhter, Faheem Ahmed Soomro, Suhail Inglezakis, Vassilis J. Rice husk is widely recognized as significant biomass containing cellulose, lignin and silica. Usually, rice husk is combusted for energy purposes but it contributes to severe environmental pollution. Therefore, the integrated components of rice husk (i.e. silica) can be extracted and converted into value-added products. However, the metallic impurities must be removed before further extraction. Generally, rice husk is leached with conventional acids such as HCl and nitric acid, however, the present study has used aqua regia and compared the results with conventional acids. The leached rice husk samples were characterized using TGA, SEM and EDX. The results of the present work indicate that the aqua regia carries a significant leaching potential to remove metallic impurities from rice husk with 1 M and 2 M solutions removing more than 98% and 99% of impurities respectively. However, its brief chemical stability compels it to be prepared and used immediately. Penerbit Universiti Kebangsaan Malaysia 2022 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/20589/1/13.pdf Akhter, Faheem and Ahmed Soomro, Suhail and Inglezakis, Vassilis J. (2022) Aqua regia as a competitive leaching agent for metallic impurity removal from rice husk. Jurnal Kejuruteraan, 34 (5). pp. 861-864. ISSN 0128-0198 https://www.ukm.my/jkukm/volume-3405-2022/ |
| spellingShingle | Akhter, Faheem Ahmed Soomro, Suhail Inglezakis, Vassilis J. Aqua regia as a competitive leaching agent for metallic impurity removal from rice husk |
| title | Aqua regia as a competitive leaching agent for metallic impurity removal from rice husk |
| title_full | Aqua regia as a competitive leaching agent for metallic impurity removal from rice husk |
| title_fullStr | Aqua regia as a competitive leaching agent for metallic impurity removal from rice husk |
| title_full_unstemmed | Aqua regia as a competitive leaching agent for metallic impurity removal from rice husk |
| title_short | Aqua regia as a competitive leaching agent for metallic impurity removal from rice husk |
| title_sort | aqua regia as a competitive leaching agent for metallic impurity removal from rice husk |
| url | http://journalarticle.ukm.my/20589/1/13.pdf |
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