Production of Eco-refinery Pulp from Moso Bamboo Using Steam Treatment Followed by Milling Treatment
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ORIGINAL PAPER
Production of Eco‑refinery Pulp from Moso Bamboo Using Steam Treatment Followed by Milling Treatment Chikako Asada1 · Yumi Sasaki2 · Yoshitoshi Nakamura1 Received: 22 April 2019 / Accepted: 16 October 2019 © Springer Nature B.V. 2019
Abstract In this study, we produced cellulose nanofiber (CNF) from moso bamboo using high-temperature and high-pressure steam treatment combined with the milling treatment. This pretreatment method can be considered as an environmentally friendly method because the treated product contains only wood-derived components and water that generally do not lead to significant corrosion problems and formation of neutralization sludge. The specific tensile strengths of CNF obtained in this work were almost the same values as that of a commercial CNF. Furthermore, an eco-refinery pulp was made of holocellulose and CNF those were obtained from moso bamboo by this pretreatment method and its mechanical strength was evaluated. By changing the steam treatment conditions, it is possible to produce eco-refinery pulp of various specific tensile strengths adapted to the application and purpose. Graphic Abstract
Water extraction & Acetone extraction & NaClO2 treatment
Steam treatment & Milling treatment
Bamboo pieces
Residue (Holocellulose)
Treated product
Pulping Eco-refinery pulp
Specific tensile strength (MPa/(g/cm3))
120 100
䕔 1.0 MPa䕔 2.5 MPa
Addition
80
Grinder treatment
60 40 20 0
5µm
0 (without CNF)
5
10
30
50
100 (CNF only)
Ratio of CNF to eco-refinery pulp (%)
Cellulose nanofiber
Keywords Lignocellulosic waste · Cellulose nanofiber · Pulp · Steam treatment · Milling treatment · Moso bamboo
* Chikako Asada asada.c@tokushima‑u.ac.jp Extended author information available on the last page of the article
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Vol.:(0123456789)
Statement of Novelty This study overcomes problems of conventional wood pulping by using high active steam treatment followed by milling treatment, simple extraction separation, production and mixing of nanofibers. Also, there is a possibility of effectively utilizing lignin as not a conventional fuel substance but high value-added epoxy resin. Currently, cellulose nanofibers have been studied and developed as resin reinforcing materials and have a problem of difficult mixing. In this research, we use cellulose nanofiber as a reinforcing material to increase the strength of not resin but pulp. Once the new pulping method of this study is established, it is possible to break through problems of conventional pulping methods such as wastewater treatment and unpleasant odor and to build a high-strength papermaking manufacturing system with a low environmental load.
Waste and Biomass Valorization
lignin called black liquor appears in the digestion and washing process, which is including the pretreatment method for producing pulp from wood, and it is an environmentally burdensome due to the use of chemicals resulting in a high cost treatment process [8]. Therefore, in this study, we attempt to prepare pulp by a novel method such as hi
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