- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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Spectroscopy approach to methanol detection in waste fat methyl esters
摘要： Second-generation biodiesel manufactured from waste cooking oils (WCO) and inedible animal fats (AF) are one of the alternatives to the first generation (1G) vegetable oil-based biodiesel. In this study, a quality control method is proposed to evaluate methanol content in waste fat methyl esters and is based on near infrared spectroscopy (NIR) combined with multivariate analysis. More specifically, calibration models are constructed using partial least squares regression (PLS) for the prediction of methanol content in rapeseed oil methyl ester (ROME), waste cooking oil methyl ester (WCOME), chicken fat methyl ester (CFME) and pork fat methyl ester (PFME) by Vis-NIR spectrometer. The calibration models are based on the absorbance spectra and computed data from five wavelength regions of 400–2170 nm, 780–2170 nm, 1400–2170 nm, 1400–1600 nm and 1970–2170 nm. For the cases with the highest prediction ability obtained in this study, the coefficient of determination of the model's goodness-of-fit for methanol concentrations range 0–5% (v/v) was R2 N 0.990, and for concentrations 0–1% (v/v) was R2 N 0.994, indicating the spectroscopic approach effectiveness in methanol content detection relevant to the biofuel quality assessment. A pseudo-univariate limits of detection (LODpu) and quantification (LOQpu) as well as ratio of performance to deviation (RPD) were used to confirm the validity and to evaluate the practical applicability of developed models. In addition, the obtained results indicate the possibility of developing a transmission sensor for online monitoring of the production process and the quality of biofuel.
关键词： PLS calibration models,Waste cooking oil,Animal fat biofuel,Vis-NIR spectroscopy
更新于2025-09-23 15:21:21
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[IEEE 2019 International Conference on Electrical Engineering and Computer Science (ICECOS) - Batam Island, Indonesia (2019.10.2-2019.10.3)] 2019 International Conference on Electrical Engineering and Computer Science (ICECOS) - Hybrid Energy Utilization of Photovoltaic with Jatropha Curcas Oil-Based Biofuel for Supporting Electrification on Sumba Island
摘要： Jatropha curcas L. (Jatropha) is a plantation which growth well in tropical countries, such as Indonesia. According to the recent studies, Jatropha seeds can yield oil, however raw Jatropha oil needs transesterification process, results in Jatropha Methyl Ester (JME), in order to reach suitable properties as biofuel and substitute diesel fuel for generating electricity, especially for area that is lack in electricity or low of electrification ratio. Meanwhile, Sumba is one of thousand islands in Indonesia that is still lack of electricity access but rich of solar energy potential, hence suitable for photovoltaic (PV) energy development. This study aimed to explore the potential hybridization of PV system with JME based biofuel. In order to reach this milestone, author analyzed properties of JME in comparison to those of diesel fuel and unveil several benefits of Jatropha, particularly related to the utilization for energy alternative. Analysis of the hybrid system was carried out by applying HOMER simulation. In addition, literature study of recent observations was also used for this study. According to NASA Surface meteorology and Solar Energy database, annual average of solar Global Horizontal Irradiance (GHI) in the Sumba island is 5,84 kWh/m2/day which is potential for PV utilization. On the other hand, Jatropha seeds can produce biofuel for generator. Subsequently, combination of PV and Jatropha based fuel generator yields NPC and COE of US$ 46,283 and US$ 0.248 respectively, which is much lower in cost than single feed diesel generator. This hybrid system will also potentially reduce gas emission of hydrocarbon fuel. Finally, combination of both PV system and Jatropha oil-based biofuel shows bright prospect of energy alternative as well as support electrification access for Indonesian society.
关键词： hybrid,COE,NPC,Jatropha Curcas,biofuel,HOMER
更新于2025-09-23 15:21:01