Performance evaluation of extractor cutting blade configuration in Inulin extraction process from Dahlia sp. L tuber

3rd International Conference on Chemical Engineering Sciences and Applications 2017

Sundari, E.^1 ; Praputri, E.^1 ; Marthiana, W.^1 ; Jaya, M.^1

Chemical Engineering Department, Bung Hatta University, Jl. Gajah Mada No. 19 Olo Nanggalo Padang, Sumatera Barat, Indonesia^1

关键词: Blade turbine;    Cutting blades;    Diffusion rate;    External surfaces;    Extraction process;    Liquid-solid extraction;    Performance evaluations;    Size reductions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/334/1/012063/pdf
DOI  :  10.1088/1757-899X/334/1/012063

来源: IOP

【 摘 要 】

Inulin, a polysaccharide plant-based nutrient, can be isolated from dahlia flower tubers by liquid-solid extraction processes and is generally carried out in an extractor tank equipped with an agitator. To accelerate the diffusion rate of solute from the solid phase (bulk phase) to the external surface (boundary layer) in order to increase yield of inulin, the size reduction of material is required. The purpose of this research was to design the cutting blade needed for dahlia tuber size reduction and investigate the effect of blade types, agitator speed (350, 700, 1050, and 1400 rpm), and configuration of cutting blade to material fineness at 90 minutes of contacting time. The results showed that higher cutting blade speed results in higher cut material fineness rate. The best conditions was achieved by the configuration of two four-blade turbine combined with one three-blade turbine with fineness rate more than 90% in 30 minutes of contacting time at every variation of agitator speed. The cutting blade designed in this study can be used for size reduction purpose of tubers other than dahlia tubers.