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Optimization of a High Capacity Industrial Bar Press for Jatropha Curcas Oil Extraction
Moussa Abdoul-Aziz,
Sidibe Sadio Sayon,
Ouedraogo Abdoulaye,
Ouedraogo Emmanuel,
Ousmane Moctar,
Coulibaly Ousmane
Issue:
Volume 11, Issue 1, March 2023
Pages:
1-5
Received:
12 December 2022
Accepted:
30 December 2022
Published:
10 January 2023
Abstract: This study allowed us to achieve the optimal yield for the extraction of Jatropha Curcas oil from the main operating variables of an industrial press. We used an industrial bar press with a large extraction capacity to carry out this work. Two interesting and indicative parameters on the influence of the efficiency of the press have been analyzed, namely the number of steps of screw and the no-load temperature on the efficiency, the temperatures of the screw, oil and cake, the flow rate of the press, the power, the specific mechanical energy of the press. The best result of 31.09%, which corresponds to the maximum recovery rate of 76.92%, was obtained with the highest number of steps of screw and the highest no-load temperature. The influence of the no-load temperature of the screw on the stability of the press has also been highlighted. The screw, the oil and the cake temperatures stabilize when the no-load temperature is greater than or equal to 100°C. The study of operating variables shows their role on the specific mechanical energy. Indeed, the increase in the number of steps of screw from 4 to 6 results in a decrease in seed flow and increase in power leading to an increase in the specific mechanical energy from 34.01 to 49.83 Wh/kg.
Abstract: This study allowed us to achieve the optimal yield for the extraction of Jatropha Curcas oil from the main operating variables of an industrial press. We used an industrial bar press with a large extraction capacity to carry out this work. Two interesting and indicative parameters on the influence of the efficiency of the press have been analyzed, ...
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Targeting Factors of Ecotax Based on Cradle-to-Grave of Carbon Footprint for SELECT Criteria Mechanism of Decision Process Using Waste-to-Energy Technology
Issue:
Volume 11, Issue 1, March 2023
Pages:
6-20
Received:
19 December 2022
Accepted:
6 January 2023
Published:
30 January 2023
Abstract: Every drug product, with its apparent patent and trademark from European Patent Commission (EPC), must exhibit its safety utilization starting from its ecological cultivation up to its warranty disposal back to the environment termed as Life Cycle Assessment of drugs. Climate change may be influenced and worsened by several determinants in which pharmaceutical sector may play a big role to environmental pollution and may eventually lead to risks of developing health problems due to environmental toxicities. Therefore, there is a crucial need for remediating drug wastes into renewable energies as corporate responsibility of environmental taxation for the advocacy of Sustainable Development as promoted and regulated by Kyoto Protocol of United Nations Millennium Development Goals of economic prosperity and safety of the public. This paper aims to delineate the waste to energy technology functions for addressing its problems and concerns in carbon tax such as the quantity of renewable power percentage, the amount of greenhouse gases of climate change and its environmental pollutants from waste disposal of expired and used drugs, the prevalence of morbidity and mortality rates in relation to environmental exposure to hazardous substances, and its relative monetary progress and success. Kinetic modelling of equations and its MATLAB simulation code is important for application of waste to energy technology for Sustainable Development. Therefore, delineation of carbon tax in kinetic modelling is quite necessary in resolving issues in economy, society, and environment as exhibited in SELECT criteria mechanism of decision making.
Abstract: Every drug product, with its apparent patent and trademark from European Patent Commission (EPC), must exhibit its safety utilization starting from its ecological cultivation up to its warranty disposal back to the environment termed as Life Cycle Assessment of drugs. Climate change may be influenced and worsened by several determinants in which ph...
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Productivity, Bioconversion Capacity, Protein and Fat Contents of Black Soldier Fly Larvae (Hermetia illucens) Fed with Jatropha Curcas Pressed Cake
Nono Wandji Brice Leonel,
Tangka Julius Kewir,
Boris Merlain Djousse Kanouo,
Sogang Segning Harry Bertholt,
Tedongmo Gouana Jospin
Issue:
Volume 11, Issue 1, March 2023
Pages:
21-28
Received:
19 January 2023
Accepted:
10 February 2023
Published:
16 March 2023
Abstract: The use of black soldier flies (BSF) for biofuel production and fish feeding is nowadays presented as an ecological alternative. Several biomasses have been used to nurture BSF, however Jatropha curcas pressed cake obtained from biofuel production using jatropha seeds is a nutrient-rich biomass that has not yet been fully used as feed for BSF, probably due to its toxicity (not used in animal feeding). The aim of this study was to assess the bioconversion of this cake by black soldier flies (Hermetia illucens) following different detoxification treatments. The study was conducted in a greenhouse. Three detoxification treatments were applied on Jatropha curcas pressed cakes (whitch was obtained by cold pressing of Jatropha cusas seeds with a residual oil content of 24.64±0.05%): the treatments consisted of a control, thermal, biological and thermo-biological treatments. Resulting cake samples were used to feed 4 treatments of 550 BSF larvae in each. Each treatment had 4 repetitions, making a total of sixteen repetitions. The BSF larvae were four-day-old and were fed with 90 g of cakes every 4 days during 15 days. Assessed parameters included survival rate of larvae, meal reduction rate, bioconversion rate, organic matter, fats, crude protein, and ash contents of larvae. Results showed that the highest (p>0.05) larval survival rate (98,42±1,22%) was obtained with the biological treatment. The best bioconversion rate (37.1±60.68%) was recorded with the control treatment. No significant difference was observed between treatments with regard to organic matter (94.25±0.13%), fats (32.08±0.25%), crude protein (45.33±0.14%) and in ash (5.75±0.13%) contents. It was concluded that Jatropha curcas cakes, although toxic for monogastric, are appropriate feed material for black soldier fly larvae and can be used without any prior detoxification treatment.
Abstract: The use of black soldier flies (BSF) for biofuel production and fish feeding is nowadays presented as an ecological alternative. Several biomasses have been used to nurture BSF, however Jatropha curcas pressed cake obtained from biofuel production using jatropha seeds is a nutrient-rich biomass that has not yet been fully used as feed for BSF, prob...
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-- Select One --
Energy Balance and Thermal Evolution Analysis of Heat Transfer Fluids of Stirling Engine and Boiler at Focal Point of a Parabolic Solar Concentrator
Harouna Sani Dan Nomao,
Makinta Boukar*,
Saïdou Madougou
Issue:
Volume 11, Issue 1, March 2023
Pages:
29-37
Received:
13 February 2023
Accepted:
4 March 2023
Published:
16 March 2023
DOI:
10.11648/j.ajee.20231101.14
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Abstract: A solar concentrator is a technology that converts direct solar radiation into heat. The parabolic concentrator is the best technology for producing electricity from solar energy, because of its high electrical efficiency, about 41%. This technique is the least mature due to the difficulties related to the storage of produced energy. This work concerns a system of two heat receivers, placed at the focus of the parabolic reflector. These two receivers are a boiler and a Stirling engine. The boiler is intended to heat a thermal fluid that will be stored while Stirling engine will produce electricity directly. We studied the thermal balance and the evolution of the temperature of thermal fluids of Stirling engine and the boiler installed at focal point of reflector. The concentrator used is a parabola with surface of 12.6 m². The simulations were carried out in the vicinity of direct radiation measured at 1 pm o'clock local time. The temperature recorded at the focal point varies from 30°C to 900°C for a duration of 80 seconds; when the direct radiation is about 900W/m². This temperature increases from 30°C to 1050°C, for an operating time of 120s. The average temperature of the three fluids in the receiver (permanent fluid in the boiler, heat transfer fluid to be stored, and thermal fluid of Stirling engine) increases from 30°C to over 400°C in less than 1500s. These thermal fluids at this temperature make it possible to operate turbine through the thermal storage system and Stirling engine, to produce electricity.
Abstract: A solar concentrator is a technology that converts direct solar radiation into heat. The parabolic concentrator is the best technology for producing electricity from solar energy, because of its high electrical efficiency, about 41%. This technique is the least mature due to the difficulties related to the storage of produced energy. This work conc...
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