Effect of Cooking Liquor Ratio on Lignin Reduction in Pulping Process from Cogongrass and Lemongrassleaves using Soda Process

Rosdanelli Hasibuan, Leonardo Ginting, Sasro Arif Purba

2018

Abstract

Pulp is the raw material for paper making. The quality of pulp is determined by the content of cellulose and the remaining lignin contained in the pulp. Alpha cellulose is a parameter used to determine the amount of cellulose contained in the pulp. The alpha cellulose content in the pulp is affected by the concentration of the cooking liquor. The level of lignin in the pulp shows the residual lignin left from incomplete hydrolysis. This study aims to reduce the amount of lignin in the pulping process from cogongrass and lemongrass leaves using soda process. The liquor that is used for cooking process is sodium hydroxide (NaOH) and sodium carbonate (Na2CO3) with a cooking time of 120 minutes, at a temperature of 110 oC, with ratios of cooking liquor and raw materials variation such as 1:1, 2:1, 3:1, and 4:1. The results of this investigation shows thatthe best cooking conditionwas obtained in the ratio of cooking liquor and raw material 4:1 with alphacellulose content 83.11%, 56.31% ofyield, 0.78% ofash content, and Kappa number which is a method to determine the amount of lignin remaining in pulp of 13.17, while the highest yield of 78.33% was obtained in the ratio of cooking solution 2: 1. In spite of that, almost all produced pulp in this study has pulp quality in accordance with SNI 7274 and the Center of Pulp (alpha cellulose content > 40%, ash content <3%, and Kappa number 13.5).

Paper Citation

in Harvard Style

Hasibuan R., Ginting L. and Purba S. (2018). Effect of Cooking Liquor Ratio on Lignin Reduction in Pulping Process from Cogongrass and Lemongrassleaves using Soda Process.In Proceedings of the International Conference of Science, Technology, Engineering, Environmental and Ramification Researches - Volume 1: ICOSTEERR, ISBN 978-989-758-449-7, pages 378-383. DOI: 10.5220/0010100603780383

in Bibtex Style

@conference{icosteerr18,
author={Rosdanelli Hasibuan and Leonardo Ginting and Sasro Arif Purba},
title={Effect of Cooking Liquor Ratio on Lignin Reduction in Pulping Process from Cogongrass and Lemongrassleaves using Soda Process},
booktitle={Proceedings of the International Conference of Science, Technology, Engineering, Environmental and Ramification Researches - Volume 1: ICOSTEERR,},
year={2018},
pages={378-383},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0010100603780383},
isbn={978-989-758-449-7},
}

in EndNote Style

TY - CONF

JO - Proceedings of the International Conference of Science, Technology, Engineering, Environmental and Ramification Researches - Volume 1: ICOSTEERR,
TI - Effect of Cooking Liquor Ratio on Lignin Reduction in Pulping Process from Cogongrass and Lemongrassleaves using Soda Process
SN - 978-989-758-449-7
AU - Hasibuan R.
AU - Ginting L.
AU - Purba S.
PY - 2018
SP - 378
EP - 383
DO - 10.5220/0010100603780383