Argyropoulos Dimitris D S, Crestini Claudia, Dahlstrand Christian, Furusjö Erik, Gioia Claudio, Jedvert Kerstin, Henriksson Gunnar, Hulteberg Christian, Lawoko Martin, Pierrou Clara, Samec Joseph S M, Subbotina Elena, Wallmo Henrik, Wimby Martin
Departments of Chemistry and Forest Biomaterials, North Carolina State University, 431 Dan Allen Drive, Raleigh, North Carolina, 27695, USA.
Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30170, Venezia-Mestre, Italy.
ChemSusChem. 2023 Dec 7;16(23):e202300492. doi: 10.1002/cssc.202300492. Epub 2023 Sep 7.
Kraft lignin, a by-product from the production of pulp, is currently incinerated in the recovery boiler during the chemical recovery cycle, generating valuable bioenergy and recycling inorganic chemicals to the pulping process operation. Removing lignin from the black liquor or its gasification lowers the recovery boiler load enabling increased pulp production. During the past ten years, lignin separation technologies have emerged and the interest of the research community to valorize this underutilized resource has been invigorated. The aim of this Review is to give (1) a dedicated overview of the kraft process with a focus on the lignin, (2) an overview of applications that are being developed, and (3) a techno-economic and life cycle asseeements of value chains from black liquor to different products. Overall, it is anticipated that this effort will inspire further work for developing and using kraft lignin as a commodity raw material for new applications undeniably promoting pivotal global sustainability concerns.
硫酸盐木质素是纸浆生产过程中的一种副产品，目前在化学回收循环中于回收锅炉中进行焚烧，产生有价值的生物能源，并将无机化学品循环至制浆工艺操作中。从黑液中去除木质素或对其进行气化可降低回收锅炉的负荷，从而提高纸浆产量。在过去十年中，木质素分离技术不断涌现，研究界对这种未充分利用资源进行增值利用的兴趣也被激发起来。本综述的目的是：（1）专门概述硫酸盐制浆工艺，重点关注木质素；（2）概述正在开发的应用；（3）对从黑液到不同产品的价值链进行技术经济和生命周期评估。总体而言，预计这项工作将激发进一步的研究，以开发和使用硫酸盐木质素作为新应用的商品原料，无疑会推动全球关键的可持续发展问题。
