Permodelan Ekstraksi Lignin Mentah dari Black Liquor dengan Metode Asidifikasi pada pH Rendah

Pasca Giffari Jusuf, Suryo Purwono, Ahmad Tawfiequrahman


Black liquor is a by-product from the cooking process in the paper and pulp industry which consist of an organic polymer lignin. Lignin has abounding uses as a raw material for rife chemical product, including adhesive, surfactant, rubber filler and other products. Acidification is one of the method use to break down lignin from black liquor. In accordance with other studies, it is essential to develop a math modelling precipitation of lignin from black liquor. The objective of this study is creating mathematical modeling to depicting change of liquid level within lean crude lignin and rich crude lignin to depicting change of liquid level within lean crude lignin and rich crude lignin and to find out does lignin concentration play a role in lignin precipitation time (lignin settling velocity).


Crude Lignin, Acid precipitation, Black Liquor, Modelling, Mass transfer


Biermann CJ. Handbook of pulping and paper making. Oregon: Academic Press. 1996: 15-18.

Gavrilescu D, Puitel, Adrian, Dutuc, Gheorghe, Craciun dan Grigore. Environmental impact of pulp and paper mills. Environmental Engineering and Management Journal. 2012; 11(1): 81-86.

Jinjing L. Isolation of lignin from wood. Saimaa University of Applied Sciences, Imatra, Bachelor’s thesis, 2011.

Kemenperin. 2017.,-Produksi-Pulp-RI-Capai-8,75-Juta-Ton (diakses 10 Juni 2018).

Nie NG SU A. Characterization of recovered black liquor and isolated lignin from oil palm empty fruit bunch soda pulping for semi chemical and chemical Pulp. University Sains Malaysia, Georgetown, Master Degree thesis, 2008.

Niemelä K. dan Alén R. Analytical methods in wood chemistry, pulp and paper making: Characterization of pulping liquor. Springer Series in Wood Science. 1999: 193-232.

Özdenkçi K., De Blasio C., Sarwar G., Järvinen M. dan Oinas P. Feasibility study for supercritical water gasification of black liquor. Sixth international symposium on energy from biomass and waste. 2016.

Petterson F. Separation of lignin from craft black liquor using the Sun Membrane process: An investigation on the precipitation and filtration parameters. Lund University. Sweden. 2014.

Pye E. K. Industrial lignin production and applications. Biorefineries – industrial processes and products 2006. 2008: 165-199.

Uloth V. C dan Wearing J. T. Kraft lignin recovery: acid precipitation versus ultrafiltration. Part 1. Laboratory test result. Pulp Pap. Can. 1989; 90: 67-71.

Wallmo H. dan Richard. An investigation of process parameters during lignin precipitation from craft black liquors: A step towards an optimized precipitation operation. Nord Pulp Paper ResJ. 2009; 24(2): 158-164.

Zhu W. dan Theliander H. Equlibrium of lignin precipitation. 16th international symposium on wood, fiber and pulping chemistry-proceedings. 2013; (1): 195-199.


  • There are currently no refbacks.