Production of d-glucose from pseudo paper sludge with hydrothermal treatment |
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| Authors: | Naota Torii Atushi Okai Kazuaki Shibuki Taku M Aida Masaru Watanabe Masayuki Ishihara Hiroichi Tanaka Yoshiyuki Sato RL Smith |
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| Affiliation: | 1. Graduate School of Environmental Studies, Tohoku University, 6-6-11 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579, Japan;2. Okutama Kogyo Co. Ltd., Tokyo, Japan;3. Research center of Supercritical Fluid Technology, Tohoku University, 6-6-11 Aramaki Aza Aoba, Aoba-Ku, Sendai 980-8579, Japan |
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| Abstract: | To convert cellulosic organics contained in industrial paper sludge into glucose, reaction of pseudo paper sludge composed of cellulose and inorganic compounds (calcium carbonate (CaCO3), talc (Mg3(Si4O10)(OH)2), kaolin (Al2(Si2O5)(OH)4)) under hydrothermal conditions was studied. Significant amounts of glucose (ca. 23%) could be produced from cellulose in the absence of CaCO3 for reaction in water at 523 K and 12 min reaction time. On the other hand, in the presence of CaCO3, most glucose decomposed over all conditions, whereas the addition of talc and kaolin to the mixtures increased the glucose yield to about 30%. For the case of chemical recycle of paper sludge with hydrothermal treatment to obtain d-glucose, it can be concluded that it is preferable to separate the calcium carbonate from the paper sludge before hydrothermal treatment. |
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