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jwri38_02_013
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論文情報
タイトル
Polysaccharide Hydrolysis and Metallic Impurities Removal Behavior of Rice Husks in Citric Acid Leaching Treatment
著者
Umeda, Junko
Umeda, Junko
Imai, Hisashi
Imai, Hisashi
Kondoh, Katsuyoshi
Kondoh, Katsuyoshi
キーワード等
rice husk
silica
hydrolysis
polysaccharide
monosaccharide
metallic impurity
抄録
Rice husk is one of the representative non-eatable biomasses, and contains 70~75 mass% organics such as cellulose and hemi-cellulose and 15~20 mass% silica (SiO₂) elements. From a viewpoint of the wide use of the biomass energy, its cost reduction is strongly required by selecting suitable raw materials as biomass fuels and optimizing the operating conditions. In the present study, rice husk was selected as input raw fuel materials because after extracting the above organics as the biomass energy from rice husks, their residues consisting of high-purity amorphous silica would be an industrial resource with added value, and resulted in the total cost reduction of the biomass energy. For high-purification of silica materials originating in rice husk residues, the citric acid leaching treatment and the following water rinsing process of rice husks were used to remove metallic impurities such as Na, K, Ca, Mg, Fe, Cu, etc. In this study, the optimization of the operating parameters such as the concentration and temperature of citric acid solution, the stirring time in the acid leaching and water rinsing treatment, and combustion temperature were examined out for the removal of metallic impurities and the hydrolysis reaction of the polysaccharides. XRF and ICP analysis were used to quantitatively evaluate the residual content of impurities and carbon elements. GC-MS and FT-IR analysis of rice husks after leaching were conducted to examine their hydrolysis behavior.
公開者
大阪大学接合科学研究所
公開者の別表記
Joining and Welding Research Institute, Osaka University
公開者 (ヨミ)
オオサカ ダイガク セツゴウ カガク ケンキュウジョ
掲載誌名
Transactions of JWRI
巻
38
号
2
開始ページ
13
終了ページ
18
刊行年月
2009-12
ISSN
03874508
NCID
AA00867058
URL
http://hdl.handle.net/11094/11504
言語
英語
カテゴリ
紀要論文 Departmental Bulletin Paper
Transactions of JWRI / Vol.38 No.2 (2009-12)
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text
DCTERMS.bibliographicCitation
Transactions of JWRI.38(2) P.13-P.18
DC.title
Polysaccharide Hydrolysis and Metallic Impurities Removal Behavior of Rice Husks in Citric Acid Leaching Treatment
DC.creator
Umeda, Junko
Imai, Hisashi
Kondoh, Katsuyoshi
DC.publisher
大阪大学接合科学研究所
DC.language" scheme="DCTERMS.RFC1766
英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF
2009-12
DC.identifier" scheme="DCTERMS.URI
http://hdl.handle.net/11094/11504
DC.subject
rice husk
silica
hydrolysis
polysaccharide
monosaccharide
metallic impurity
DCTERMS.abstract
Rice husk is one of the representative non-eatable biomasses, and contains 70~75 mass% organics such as cellulose and hemi-cellulose and 15~20 mass% silica (SiO₂) elements. From a viewpoint of the wide use of the biomass energy, its cost reduction is strongly required by selecting suitable raw materials as biomass fuels and optimizing the operating conditions. In the present study, rice husk was selected as input raw fuel materials because after extracting the above organics as the biomass energy from rice husks, their residues consisting of high-purity amorphous silica would be an industrial resource with added value, and resulted in the total cost reduction of the biomass energy. For high-purification of silica materials originating in rice husk residues, the citric acid leaching treatment and the following water rinsing process of rice husks were used to remove metallic impurities such as Na, K, Ca, Mg, Fe, Cu, etc. In this study, the optimization of the operating parameters such as the concentration and temperature of citric acid solution, the stirring time in the acid leaching and water rinsing treatment, and combustion temperature were examined out for the removal of metallic impurities and the hydrolysis reaction of the polysaccharides. XRF and ICP analysis were used to quantitatively evaluate the residual content of impurities and carbon elements. GC-MS and FT-IR analysis of rice husks after leaching were conducted to examine their hydrolysis behavior.
citation_title
Polysaccharide Hydrolysis and Metallic Impurities Removal Behavior of Rice Husks in Citric Acid Leaching Treatment
citation_author
Umeda, Junko
Imai, Hisashi
Kondoh, Katsuyoshi
citation_publisher
大阪大学接合科学研究所
citation_language
英語
citation_date
2009-12
citation_journal_title
Transactions of JWRI
citation_volume
38
citation_issue
2
citation_firstpage
13
citation_lastpage
18
citation_issn
03874508
citation_public_url
http://hdl.handle.net/11094/11504
citation_keywords
rice husk
silica
hydrolysis
polysaccharide
monosaccharide
metallic impurity