Development of a Black Liquor Electrolyzer for Lignin Extraction

被引：6

作者：

Belo, I. C. ^{[1
]}

Oliveira, R. C. P. ^{[1
]}

Mateus, M. M. ^{[2
]}

Bordado, J. C. M. ^{[2
]}

Pinto, P. C. R. ^{[3
]}

Santos, D. M. F. ^{[1
]}

机构：

[1] Univ Lisbon, Ctr Phys & Engn Adv Mat CeFEMA, Inst Super Tecn, P-1049001 Lisbon, Portugal

[2] Univ Lisbon, Ctr Nat Resources & Environm CERENA, Inst Super Tecn, P-1049001 Lisbon, Portugal

[3] Forest & Paper Res Inst RAIZ, Apartado 15, P-3801501 Eixo, Portugal

来源：

ELECTROCHEMICAL ENGINEERING GENERAL SESSION -AND- CHARACTERIZATION OF ELECTROCHEMICAL REACTORS: FLUID DYNAMICS AND CURRENT DISTRIBUTION | 2018年 / 86卷 / 04期

关键词：

PRECIPITATION;

D O I：

10.1149/08604.0003ecst

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Pulp and paper industry requires developing more sustainable production and improve technologies on biorefinery and bioproduct market areas. Based on these areas, the isolation of lignin from black liquor, obtained by Eucalyptus Globulus, is an important objective. The present study demonstrates that it is possible to recover lignin by electrolysis of the Kraft black liquor in a simple and economic way. This novel black liquor electrolyzer leads to lignin recovery by anodic electrodeposition and cathodic production of hydrogen. Physicochemical characterization of black liquor is made, with the determined values of pH, density, dry solids content and ash content being 13.0, 1111 g cm(-3), 16.7 wt.%, and 8.0 wt.% (wet basis) and 40.8 wt.% (dry basis), respectively. The electrolysis experiments are conducted at room temperature on a small-scale laboratory black liquor electrolyzer using Ni plates. ATR-FTIR analysis of the obtained lignin samples is compared with previous literature reports.

引用

页码：3 / 9

页数：7

共 28 条

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