Lignin Recovery from Spent Alkaline Pulping Liquors Using Acidification, Membrane Separation, and Related Processing Steps: A Review

作     者：Hubbe, Martin A. Alen, Raimo Paleologou, Michael Kannangara, Miyuru Kihlman, Jonas 

作者机构：North Carolina State Univ Dept Forest Biomat Campus Box 8005 Raleigh NC 27695 USA Univ Jyvaskyla Dept Chem POB 35 Jyvaskyla 40014 Finland FPInnovations 570 St Jean Blvd Pointe Claire PQ H9R 3J9 Canada Natl Res Council Canada Energy Min & Environm 1200 Montreal Rd Ottawa ON K1A 0R6 Canada Karlstad Univ Dept Engn & Chem Sci SE-65188 Karlstad Sweden 

出 版 物：《BIORESOURCES》 (BioResour.)

年 卷 期：2019年第14卷第1期

页      面：2300-2351页

核心收录：

学科分类：082903[工学-林产化学加工工程] 08[工学] 0829[工学-林业工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 082201[工学-制浆造纸工程] 0822[工学-轻工技术与工程] 

主　　题：Black liquor Acid precipitation Ultrafiltration Colloidal stability Solubility Debottlenecking of pulp mills Carbon dioxide Sulfuric acid Lignin isolation 

摘      要：The separation of lignin from the black liquor generated during alkaline pulping is reviewed in this article with an emphasis on chemistry. Based on published accounts, the precipitation of lignin from spent pulping liquor by addition of acids can be understood based on dissociation equilibria of weak acid groups, which affects the solubility behavior of lignin-related chemical species. Solubility issues also govern lignin separation technologies based on ultrafiltration membranes;reduction in membrane permeability is often affected by conditions leading to decreased solubility of lignin decomposition products and the presence of colloidal matter. Advances in understanding of such phenomena have potential to enable higher-value uses of black liquor components, including biorefinery options, alternative ways to recover the chemicals used to cook pulp, and debottlenecking of kraft recovery processes.