Effect of solvent volume ratio and time extraction of glycerol purification

TALENTA - Conference on Engineering, Science and Technology 2017

工业技术;自然科学

Sinaga, M.S.^1 ; Rico, G.^1 ; Nababan, A.N.^1 ; Manullang, T.A.^1

Department of Chemical Engineering, Faculty of Engineering, Universitas Sumatera Utara, Padang Bulan, Medan

20155, Indonesia^1

关键词: Acid addition;    Biodiesel production;    Effect of solvents;    Extraction time;    Free fatty acid;    Glycerol concentration;    Purification process;    Test volume;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/309/1/012123/pdf
DOI  :  10.1088/1757-899X/309/1/012123

来源: IOP

【 摘 要 】

Glycerol as a byproduct of biodiesel production about 10% of the biodiesel weight. Impurities which contained in the glycerol such as catalyst, soap, methanol, water, salt, and matter organic nonglycerol (MONG) on have a significant effect on the glycerol concentration. So, it is necessary to treat the impurities. The purpose of this study is to know the effect of ethylene glycol to glycerol purification process with acidification method using phosphoric acid aspretreatment process. This research was begun with an acid addition to the glycerol to neutralize the base content and to split the soap content into free fatty acid and salt, which easier separated from glycerol. Then the process was continued with extraction by the solvent ethylene glycol using the variable of test volume ratio (v/v) (1:0,5, 1:1, 1:1,5) and the extraction time (20, 40, and 60 minutes). The results showed that the more volume of solvent used, gave less extraction time to produce high purity of glycerol. The highest purity produced in this study amounted to 90.646% is obtained at the ratio of the volume solvent (v/v) 1:1 with extraction time 60 minutes.