Preliminary study on products distribution in alcohol pulping ofEucalyptus globulus

Abstract

The aim of the present work was to study the fractionation of Eucalyptus globulus wood into pulp and by‐products by alcohol–water pulping. Under the cooking conditions employed low lignin content pulp and a high yield of by‐products were attained. The laboratory‐scale alcohol and by‐products recovery system studied consisted of three stages: black liquor flashing, lignin precipitation from black liquor, and distillation of precipitation mother liquor. The mass balance for the process enabled the amount of pulp and by‐products produced and the consumption of chemicals to be estimated. © 1999 Society of Chemical Industry

Comparative study of solvolysis of technical lignins in flow reactor

“…Organosolv processes for lignin extraction were developed as environmentally alternatives to the kraft process [8][9][10]. Organosolv lignins contain generally lower residual minerals and carbohydrates, but due to elevated temperatures and pressures, lignins present generally highly modified structures compared to that of native lignin [11,12].…”

Dissolution, regeneration and characterisation of formic acid and Alcell lignin in ionic liquid-based systems

“…5 Sulphite lignin can be processed in value-added products such as lignosulfonates or used as dispersants, binders, resol resins manufacturing or thermosetting resins. [6][7][8][9] Monomeric phenols and methoxyphenols can be obtained in lignin degradation. Nevertheless, only 1-2% of residual lignin from kra pulp have employed in a wide range of specialty products.…”

Relation between differential solubility of cellulose and lignin in ionic liquids and activity coefficients

“…2 Lignin can be employed in dispersants, foams, surfactants or thermosetting resins. [3][4][5] Furthermore, lignin is a potential source for the production of chemicals such as phenols, benzene, toluene or xylene. 1 On the other hand, cellulose is the main and most commonly used compound of woody plants, comprising 40-50% of the wood dry mass.…”