Multi-objective Optimization of Process Parameters for Lignin Removal of Coir Using TOPSIS

ABSTRACT

This paper presents the use of Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) method to determine the optimum time, NaOH concentration, and temperature for reduction in lignin content, reduction in flexural rigidity, and tenacity of the coir yarns using box-behnken design. Optimum conditions for better properties are obtained from the ramp graphs. The results indicate that the TOPSIS method is appropriate for solving the multi-criteria optimization of the process parameters based on ranking system. The optimal value for time, concentration, and temperature are 3 h, 5% NaOH, and 80°C based on the defined criteria.

摘要

本文介绍了用TOPSIS法优选顺序的方法，采用box-behnken设计法，确定了降低椰子纱木质素含量、降低其弯曲刚度和韧性的最佳时间、NaOH浓度和温度. 从斜坡图中得到了性能更好的最佳条件. 结果表明，TOPSIS方法适合于求解基于排序系统的工艺参数多准则优化问题.

根据确定的标准，时间、浓度和温度的最佳值为3hr、5%NaOH和80°C。

KEYWORDS:

• Coir
• lignin
• flexural rigidity
• TOPSIS
• optimization

关键词:

• 科尔
• 木质素
• 抗弯刚度
• 优化