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Fast track for quantitative isolation of lignosulfonates from spent sulfite liquors

机译:从废亚硫酸盐溶液中定量分离木质素磺酸盐的快速通道

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摘要

In this study, a novel approach for isolation and purification of lignosulfonates from spent sulfite liquor was established. This approach involves sorption onto macroreticular non-ionic poly(methyl methacrylate) beads (XAD-7 resin) and subsequent desorption with organic solvents to obtain lignosulfonates of high purity. The method was optimized, verified and tested on four industrial lignosulfonate liquors from different processes and compared with an established ultrafiltration protocol. The method proved to be reproducible, robust and significantly faster than ultrafiltration.
机译:在这项研究中,建立了一种从废亚硫酸盐溶液中分离和纯化木质素磺酸盐的新方法。该方法涉及吸附到大网状非离子型聚(甲基丙烯酸甲酯)微球(XAD-7树脂)上,然后用有机溶剂解吸,以获得高纯度的木质素磺酸盐。对来自不同工艺的四种工业木质磺酸盐溶液进行了优化,验证和测试,并与已建立的超滤方案进行了比较。与超滤相比,该方法被证明具有可重现性,鲁棒性并且明显更快。

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