Production of amorphous silica nanoparticles from rice straw with microbial hydrolysis pretreatment
An enzymatic hydrolysis approach was used in order to develop a less aggressive process for production of amorphous silica from rice straw. In the process, rice straw was firstly hydrolyzed either with a microbial isolate (Trichoderma reesei TISTR 3080) or a microbial community (LDD1), followed by a...
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th-mahidol.293062018-09-24T16:44:50Z Production of amorphous silica nanoparticles from rice straw with microbial hydrolysis pretreatment S. Wattanasiriwech D. Wattanasiriwech J. Svasti Mae Fah Luang University Mahidol University Materials Science Physics and Astronomy An enzymatic hydrolysis approach was used in order to develop a less aggressive process for production of amorphous silica from rice straw. In the process, rice straw was firstly hydrolyzed either with a microbial isolate (Trichoderma reesei TISTR 3080) or a microbial community (LDD1), followed by a heat treatment at 500 °C for 8 h. After hydrolysis, the rice straw was decomposed by T. reesei and by LDD1 to 59.6% and 45.2% of the initial weight, of which 12% and 23% ash content was respectively determined by thermogravimetric analysis. X-ray diffraction and transmission electron microscopy analysis confirmed that the major constituent in the ash to be amorphous silica with a particle size ranges between 50 and 80 nm. The silica content in the T. reesei pretreated ash was 82.5%, whereas the content of the LDD1 pretreated ash was 73.6%. Relatively high levels of impurities such as manganese and phosphate, associated with microbial activity were detected in both pretreated ash samples. © 2010 Elsevier B.V. All rights reserved. 2018-09-24T09:10:29Z 2018-09-24T09:10:29Z 2010-06-01 Article Journal of Non-Crystalline Solids. Vol.356, No.25-27 (2010), 1228-1232 10.1016/j.jnoncrysol.2010.04.032 00223093 2-s2.0-77956392837 https://repository.li.mahidol.ac.th/handle/123456789/29306 Mahidol University SCOPUS https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=77956392837&origin=inward |
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Materials Science Physics and Astronomy S. Wattanasiriwech D. Wattanasiriwech J. Svasti Production of amorphous silica nanoparticles from rice straw with microbial hydrolysis pretreatment |
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An enzymatic hydrolysis approach was used in order to develop a less aggressive process for production of amorphous silica from rice straw. In the process, rice straw was firstly hydrolyzed either with a microbial isolate (Trichoderma reesei TISTR 3080) or a microbial community (LDD1), followed by a heat treatment at 500 °C for 8 h. After hydrolysis, the rice straw was decomposed by T. reesei and by LDD1 to 59.6% and 45.2% of the initial weight, of which 12% and 23% ash content was respectively determined by thermogravimetric analysis. X-ray diffraction and transmission electron microscopy analysis confirmed that the major constituent in the ash to be amorphous silica with a particle size ranges between 50 and 80 nm. The silica content in the T. reesei pretreated ash was 82.5%, whereas the content of the LDD1 pretreated ash was 73.6%. Relatively high levels of impurities such as manganese and phosphate, associated with microbial activity were detected in both pretreated ash samples. © 2010 Elsevier B.V. All rights reserved. |
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Mae Fah Luang University |
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Mae Fah Luang University S. Wattanasiriwech D. Wattanasiriwech J. Svasti |
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Article |
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S. Wattanasiriwech D. Wattanasiriwech J. Svasti |
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S. Wattanasiriwech |
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Production of amorphous silica nanoparticles from rice straw with microbial hydrolysis pretreatment |
title_short |
Production of amorphous silica nanoparticles from rice straw with microbial hydrolysis pretreatment |
title_full |
Production of amorphous silica nanoparticles from rice straw with microbial hydrolysis pretreatment |
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Production of amorphous silica nanoparticles from rice straw with microbial hydrolysis pretreatment |
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Production of amorphous silica nanoparticles from rice straw with microbial hydrolysis pretreatment |
title_sort |
production of amorphous silica nanoparticles from rice straw with microbial hydrolysis pretreatment |
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2018 |
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https://repository.li.mahidol.ac.th/handle/123456789/29306 |
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