Lignin is one of the most abundant bio-aromatic molecular resources, but it is currently underutilized for energy production in the pulp and paper industry. Unlocking the full potential of lignin could have a significant impact on reducing environmental pollution, increasing the use of renewable resources, and achieving environmentally beneficial economic growth. However, effective lignin valorization requires viable and integrated reaction and separation processes to produce high value monomeric phenolics, such as vanillin and syringaldehyde. The aim of this short review is to summarize the studies on different separation methods of lignin derivatives obtained from black liquor, including extraction, membrane filtration, chromatographic separation, and the combination technologies.

中文翻译：

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从氧化硫酸盐溶液中分离和纯化香兰素和丁香醛 – 简短回顾 

木质素是最丰富的生物芳香分子资源之一，但目前在纸浆和造纸工业的能源生产中尚未得到充分利用。释放木质素的全部潜力可能会对减少环境污染、增加可再生资源的使用以及实现对环境有利的经济增长产生重大影响。然而，有效的木质素增值需要可行且集成的反应和分离过程来生产高价值的单体酚类化合物，例如香草醛和丁香醛。本文的目的是总结从黑液中获得木质素衍生物的不同分离方法的研究，包括萃取、膜过滤、色谱分离及其组合技术。