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| Development of the On-line Measurement Model for Pre-hydrolysis Process of Bamboo Dissolving Pulp |
| Received:June 19, 2022 |
| DOI：10.11980/j.issn.0254-508X.2022.08.009 |
| Key Words:bamboo dissolving pulp pre-hydrolysis on-line measurement model |
| Fund Project:国家重点研发计划项目（2019YFC1905903）；福建省科技厅产学研重大专项（2018H6003）。 |
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| Abstract:The dominant non-wood biomass in southern China， i.e.， bamboo was used as raw materials to investigate the effect of pre-hydrolysis conditions on the yield， carbohydrate polymers and lignin removal rate. The results showed that the liquid-solid ratio， temperature and time of pre-hydrolysis process were the main controlling factors affecting the removal rate of chemical components， and there was a good relationship between the removal ratio of chemical components and the UV-Vis characteristic absorption value of hydrolysate under the same liquid-solid ratio. Therefore， an on-line detection model， that was independent of pre-hydrolysis temperature and time， could be established by using the characteristic absorption values of UV-visible spectra. The model showed am excellent prediction accuracy on removal rate of cellulose， hemicellulose， lignin and yield， confirming it was suitable for controlling the quality of bamboo dissolving pulp by accurately controlling the pre-hydrolysis stage of bamboo. |
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