Bio energy, a kind of renewable energy, has advantages that do not increase concentration of carbon dioxide in the atmosphere and also decrease air pollutats emissions. It can replace fossil fuels since they are able to be renewed and recycled. The field of the bio-ethanol has been the most widely s...
Bio energy, a kind of renewable energy, has advantages that do not increase concentration of carbon dioxide in the atmosphere and also decrease air pollutats emissions. It can replace fossil fuels since they are able to be renewed and recycled. The field of the bio-ethanol has been the most widely studied.
The major purpose of this study is to find pretreatment methods for removing Lignin that interrupts producing a bio ethanol from the Lignocellulosic biomass (Pinus rigida).
Alkali pretreatment was adopted, which is known as the most efficient treatment of removing Lignin. NH4OH as solvent. The experimental variables considered were the concentration of NH4OH, sample types, the size of sample, temperature and solvent types.
The results of experiment showed that the removal ratio of Lignin contained in the Pinus rigida powder is 4.5% under the conditions of NH4OH(15%), 50 ℃ and 60 ℃. However there is no significant differences of Lignin content variations by the size of biomass. Besides, under the condition of increased concentration NH4OH up to 20%, 50℃ and 60 mesh size, the removal ratio of Lignin contained in the Pinus rigida powder is 27%.
This study also carried out investigate a Lignin removal ratio of the rice straw to compare with that of the Pinus rigida. The result shows 50% of Lignin removal ratio under the both 50 ℃ and 60 ℃ conditions. Additionally, to investigate various Lignin amount by temperature variations, the pretreatment temperature is increased from 50 ℃ to 60 ℃. However there are no differences in variations of Lignin content.
Also, to investigate Lignin removal ratio, other pretreatment reagents such as NaOH, H2SO4 and organic solvent were used. The Lignin removal ratio of NaOH shows a similar result of NH4OH. On the other hand, the pretreatment on the H2SO4 do not show the Lignin removal.
In the case of organic solvent pretreatments, 1-buthanol and distilled water are used and the Lignin removal ratio shows 26%. Since NH4OH and organic solvent shows the best Lignin removal ratio, chemical pretreatment is attempted consecutively. The result shows that Lignin removal ratio is able to be reached to 63%.
Bio energy, a kind of renewable energy, has advantages that do not increase concentration of carbon dioxide in the atmosphere and also decrease air pollutats emissions. It can replace fossil fuels since they are able to be renewed and recycled. The field of the bio-ethanol has been the most widely studied.
The major purpose of this study is to find pretreatment methods for removing Lignin that interrupts producing a bio ethanol from the Lignocellulosic biomass (Pinus rigida).
Alkali pretreatment was adopted, which is known as the most efficient treatment of removing Lignin. NH4OH as solvent. The experimental variables considered were the concentration of NH4OH, sample types, the size of sample, temperature and solvent types.
The results of experiment showed that the removal ratio of Lignin contained in the Pinus rigida powder is 4.5% under the conditions of NH4OH(15%), 50 ℃ and 60 ℃. However there is no significant differences of Lignin content variations by the size of biomass. Besides, under the condition of increased concentration NH4OH up to 20%, 50℃ and 60 mesh size, the removal ratio of Lignin contained in the Pinus rigida powder is 27%.
This study also carried out investigate a Lignin removal ratio of the rice straw to compare with that of the Pinus rigida. The result shows 50% of Lignin removal ratio under the both 50 ℃ and 60 ℃ conditions. Additionally, to investigate various Lignin amount by temperature variations, the pretreatment temperature is increased from 50 ℃ to 60 ℃. However there are no differences in variations of Lignin content.
Also, to investigate Lignin removal ratio, other pretreatment reagents such as NaOH, H2SO4 and organic solvent were used. The Lignin removal ratio of NaOH shows a similar result of NH4OH. On the other hand, the pretreatment on the H2SO4 do not show the Lignin removal.
In the case of organic solvent pretreatments, 1-buthanol and distilled water are used and the Lignin removal ratio shows 26%. Since NH4OH and organic solvent shows the best Lignin removal ratio, chemical pretreatment is attempted consecutively. The result shows that Lignin removal ratio is able to be reached to 63%.
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