Identification of sensitive process parameter of rubber seed oil conversion to biodiesel using fluorite and calcined limestone as catalysts—Uncertainty error analysis

Lakshmi, Sai Bharadwaj Aryasomayajula Venkata Satya; Niju, Subramaniapillai; Begum, K.M. Meera Sheriffa; Anantharaman, N.

doi:10.1002/ep.13564

Cited by 6 publications

(3 citation statements)

References 18 publications

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“…Reduced yield at higher oil/methanol ratios occurs as a result of dissolved glycerol in the excess methanol inhibiting the reaction, leading to a negative equilibrium shift 41. This result conforms to previous observations by Bharadwaj et al 42 who, through uncertainty analysis, observed that for two different catalysts, the methanol/oil molar ratio was the most sensitive parameter for the conversion of rubber seed oil to biodiesel. They further noted a significant drop in conversion at molar ratios lower than the optimum values, which agrees with our observation.…”

Section: Resultssupporting

confidence: 90%

Effect of Hydrothermal Treatment on the Properties of Calcium Oxide from Eggshells Used as a Biodiesel Catalyst

et al. 2021

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The utilization of waste cooking oil (WCO) and bleached palm oil (BPO) for the production of biodiesel in the presence of hydrothermally treated calcium oxide (CaO) derived from waste chicken eggshells was investigated. Waste chicken eggshells were calcined at 850 °C and then hydrothermally treated at 120 and 140 °C to produce two sets of CaO catalysts. Hydrothermal treatment of the catalysts resulted in a decrease of the crystallite size from 47 to 30 and 28 nm at temperatures of 120 and 140 °C. The catalytic performance of the CaO catalysts was evaluated with WCO and BPO, respectively. WCO gave biodiesel yields of 82.7 and 83.1 % for CaO catalysts aged at 120 and 140 °C respectively. BPO gave 79.4 and 79.6 % yields, respectively, for the same set of catalysts.

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Section: Resultssupporting

confidence: 90%

Effect of Hydrothermal Treatment on the Properties of Calcium Oxide from Eggshells Used as a Biodiesel Catalyst

et al. 2021

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“…Uncertainty error analysis is related to the deviation of experimental output responses and can be resolved effectively. 41 The results have been given with uncertainty values in Table 7.…”

Section: Resultsmentioning

confidence: 99%

Inhibitory effect of thyme oil as an antioxidant for waste cooking oil biodiesel crystallization

Uğuz

2021

Energy & Environment

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The effects of thyme oil extract as an antioxidant on crystallization properties of waste cooking oil biodiesel were investigated. The inhibitory effect was determined for ASTM D7545 standard method for biodiesel added with 1000, 2000, and 3000 ppm of additives by using oxifast device and compared with the chemical antioxidant butylated hydroxytoluene (BHT). Inhibition time data were determined by converting the oxidation stability analysis results. The crystallization temperatures (Tcr) of the samples were determined by using a Differential Scanning Calorimetry (DSC) technique. Tcr values of samples with antioxidants were decreased compared to the non-antioxidant biodiesel sample (B100). The order of antioxidant power was B100<B100T1<B100T2 = B100BHT1<B100BHT2<B100T3<B100BHT3. The solid fat content (SFC %) values were determined with different antioxidant concentrations versus different times. The minimum SFC % was determined in B100T3 and B100BHT3 in 3000 ppm antioxidant concentrations in 720 min. DSC results show that the crystallization onset temperatures for B100, B100T3, and B100BHT3 were −51.83 °C, −53.59 °C, and −54.15 °C, respectively. The kinetics of crystallization was determined and k and n values were calculated. The addition of thyme oil extract as a natural antioxidant has a positive effect on biodiesel oxidative stability for all concentrations.

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“…When developing a SA, it is critical to understand the relationships between the unknown input parameters. 47 The goal of employing RSM as a sensitivity analysis method is to increase the analyst's awareness of the sensitivity between the model's output (response) and its related input parameters and then utilize this information to enhance the decision model. Multi-objective optimization Box-Behnken response surface methodology…”

Section: Discussionmentioning

confidence: 99%

Effect of α-aluminium oxide nano additives with Sal biodiesel blend as a potential alternative fuel for existing DI diesel engine

Sharma¹,

Pali

Kumar

et al. 2022

Energy & Environment

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The increasing demand, rapid consumption, price increase, limited reserves, and environmental concern due to pollution produced by conventional fossil fuel (diesel & gasoline) are a few reasons why biofuels need to be explored. The present paper employs a systematic methodology to examine the performance of a 20% volumetric blend of Sal biodiesel (S20) blended with diesel using α-aluminium oxide (α-Al2O3) nanoparticles (NP) as additives and is compared with a diesel under like circumstances. The central composite design, Box-Behnken design (BBD) based response surface methodology, and desirability tests are used in the organized experiments on a diesel engine configuration to facilitate calibration. The created multivariate regression model yields all of the best engine inputs. Interaction effects are used to determine the most influential element by observing the interaction of two distinct input factors on a single response. According to the desirability tests, the highest estimated desirability was 0.579; the optimal input parameters found are 21°bTDC injection timing (IT), 238 bar injection pressure (IOP), 17 compression ratio (CR), and 74 ppm concentration of α-Al2O3NP, estimated the optimized response of brake thermal efficiency (BHTE) 31.18%, brake specific fuel consumption (BSFC) 0.2975 kg/kWh, carbon monoxide (CO) 0.0887%, hydrocarbon (HC) 31 ppm, oxide of nitrogen (NOx) 677 ppm, and smoke level 54.92%. These predicted values were validated with experimental results, and errors were within the range. The nanoparticle combination sample offers improved brake thermal efficiency (BTHE) and lower BSFC rate than the S20 while testing for the optimal parametric condition. Graphical abstract [Formula: see text]

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Identification of sensitive process parameter of rubber seed oil conversion to biodiesel using fluorite and calcined limestone as catalysts—Uncertainty error analysis

Cited by 6 publications

References 18 publications

Effect of Hydrothermal Treatment on the Properties of Calcium Oxide from Eggshells Used as a Biodiesel Catalyst

Effect of Hydrothermal Treatment on the Properties of Calcium Oxide from Eggshells Used as a Biodiesel Catalyst

Inhibitory effect of thyme oil as an antioxidant for waste cooking oil biodiesel crystallization

Effect of α-aluminium oxide nano additives with Sal biodiesel blend as a potential alternative fuel for existing DI diesel engine

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