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On-Site Recovery of Hemicelluloses from Thermomechanical Pulp Mill Process Water by Microfiltration and Ultrafiltration
Journal of Wood Chemistry and Technology ( IF 2 ) Pub Date : 2019-02-26 , DOI: 10.1080/02773813.2019.1565865
Johan Thuvander 1 , Frank Lipnizki 1 , Ann-Sofi Jönsson 1
Affiliation  

During mechanical defibration of wood, a minor fraction of the wood mass is dissolved in the process water. These dissolved substances represent an extra energy demand when they are treated in the mill’s wastewater treatment plant. Galactoglucomannan, the main hemicellulose in spruce, can be recovered from thermomechanical pulp mill process water by a process based on microfiltration (MF) and ultrafiltration (UF). The purpose of this work was to study the scale-up of the process from laboratory scale to continuous industrial scale. MF was first studied in the laboratory, and then combined with UF in a continuous pilot process on-site at a pulp mill. The data obtained were used to estimate the cost of the membrane processes for galactoglucomannan recovery which was found to be about €1160 per ton hemicelluloses.

中文翻译:

通过微滤和超滤从热机械纸浆厂工艺水中现场回收半纤维素

在木材的机械解纤过程中,一小部分木材溶解在工艺水中。这些溶解的物质在工厂的废水处理厂进行处理时需要额外的能源。半乳葡甘露聚糖是云杉中的主要半纤维素,可通过基于微滤 (MF) 和超滤 (UF) 的工艺从热机械制浆厂工艺水中回收。这项工作的目的是研究从实验室规模到连续工业规模的过程放大。MF 首先在实验室中进行研究,然后在纸浆厂的现场连续中试过程中与 UF 结合使用。获得的数据用于估算半乳葡甘露聚糖回收的膜工艺成本,发现每吨半纤维素约为 1160 欧元。
更新日期:2019-02-26
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