Lignin recovery from spent alkaline pulping liquors using acidification, membrane separation, and related processing steps : A Review
Hubbe, M. A., Alén, R., Paleologou, M., Kannangara, M., & Kihlman, J. (2019). Lignin recovery from spent alkaline pulping liquors using acidification, membrane separation, and related processing steps : A Review. BioResources, 14(1), 2300-2351. https://doi.org/10.15376/biores.14.1.2300-2351
© The Authors, 2019.
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.
PublisherNorth Carolina State University
Publication in research information system
MetadataShow full item record
Showing items with similar title or keywords.
Kumar, Hemanathan (University of Jyväskylä, 2016)Innovative biorefinery concepts were developed for the separation and utilization of organic materials, especially aliphatic carboxylic acids, lignin, and extractives, which are formed as by-products during wood-based ...
Chen, Chengcong (University of Jyväskylä, 2017)The combustion of black liquor (BL) in a recovery boiler is a central process in a kraft pulp mill for recovering the cooking chemicals and for producing heat and power. This work explored the most important combustion ...
Role of lignin and sodium carbonate on the swelling behavior of black liquor droplets during combustion Chen, Chengcong; Pakkanen, Hannu; Alén, Raimo (Walter de Gruyter GmbH, 2018)A partial removal of lignin from black liquor (BL) by carbonation and lignin precipitation was studied. In lignin-lean BL droplets during combustion in a laboratory furnace at 800°C in stagnant air, the maximum swelling ...
Effective Recovery Process of Copper from Waste Printed Circuit Boards Utilizing Recycling of Leachate Rajahalme, Joona; Perämäki, Siiri; Budhathoki, Roshan; Väisänen, Ari (Springer, 2021)This study presents an optimized leaching and electrowinning process for the recovery of copper from waste printed circuit boards including studies of chemical consumption and recirculation of leachate. Optimization of ...
Combustion properties of spruce black liquor droplets : Sulfur-free pulping and influence of hot-water pretreatment Chen, Chengcong; Alén, Raimo; Lehto, Joni; Pakkanen, Hannu (Svenska Pappers- och Cellulosaingenioersfoereningen, 2016)Hot-water pretreatment of lignocellulosics prior to sulfur-free alkaline pulping is an interesting approach for recovering value-added carbohydrate- and lignin-derived materials. This paper investigated the chemical ...