Effect of iron and magnesium addition for ethanol production from the conversion of palm oil mill effluent by anaerobic processes

4th International Seminar on Sustainable Urban Development

地球科学;经济学

Handajani, M.^1 ; Gumilar, A.^1 ; Syafila, M.^1

Environmental Engineering Department, Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung, Bandung, Indonesia^1

关键词: Anaerobic process;    Concentration of fe;    Ethanol concentrations;    Ethanol production;    Magnesium addition;    Metabolic pathways;    Metal addition;    Palm oil mill effluents;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/106/1/012111/pdf
DOI  :  10.1088/1755-1315/106/1/012111

来源: IOP

【 摘 要 】

Nowadays, crisis of the energy is the main problem in the world. Currently, most the energy resource derived from the fossil material that cannot be refurbished. Ethanol is an alternative fuel that content as a fossil fuels. Wastewater with the high concentration of the organic can be used for the ethanol production to replace foodstuff as a raw material. In this study, palm oil mill effluent (POME) with the concentration of COD is 24,500 mg/L has been used as a substrate. The purpose of this study was to determine the effect of the metal addition in the substrate metabolic pathways. Circulating batch reactor (CBR) is used with the flushing N2 1L/min for 24 hours and continued operates for 72 hours by internal biogas. The additional variation concentration of Fe(II) ion are 0.5; 1.0 and 2.5 mg/L, and Mg(II) are 0.5 and 1.5 mg/L were added by combination. The results showed that the combination of Fe (II) 2.5 mg/L and Mg(II) 1.5 mg/L produced the highest ethanol concentration is 715.8 mg/L and degree of acidification (DA) 0.284-0.357. Another combination of Fe(II) and Mg(II) provide results for the ethanol production 463.7-689.7 mg/L with the rate of ethanol production is 1.09-26.5 mg/L/hour.