Listar por autor "Rivera, Christian"

Itaconic acid is a metabolite produced from biotechnological pathway using the microorganism Aspergillus terreus. It is used in a wide number of sectors such as industry, agriculture and health. Based on its chemical ...

Phycocyanin is a high-value chromo-protein used in various industries. In this research, a simulation study of kinetics is carried out to identify different light spectra effects on microbial growth and phycocyanin ...

Economic Assessment of Itaconic Acid Production from Aspergillus Terreus using Superpro Designer
...
Rivera, Christian | 2020-09-13

Itaconic acid is a metabolite produced from biotechnological pathway using the microorganism Aspergillus terreus. It is used in a wide number of sectors such as industry, agriculture and health. Based on its chemical properties, itaconic acid is a great interest for replacing polymers and resins derived from petroleum. However, its production is still expensive and this latter hinders large scale studies regarding itaconic acid production. Nowadays, simulation is a great alternative to overcome this problem. It allows researchers to make a more effective evaluation and self-assessment, reducing costs and avoiding losses at large scale operation. For that reason, the purpose of this research is performing an Itaconic acid production simulation on industrial scale using SuperPro Designer software. Costs reduction improvement is also analyzed. 90g/L of glycerol, 1g/L of NH4NO3 and 1.25 of KH2PO4 are set up on simulation as media composition reported from references. Results regarding itaconic acid crystals showed a productivity of 171 kg/h and an operating cost closed to 42.0 USD/kg. Interestingly, a 17 % productivity increase is reached by proposing a stream recycling based on itaconic acid recovering from downstream centrifugation processing. The latter based on a higher productivity estimated (200 kg/h). Also average costs are reduced at 12 % since 38.1 USD/kg is found using improvements mentioned. Results found here demonstrate the potential usage of simulators for estimating costs and production which allows predicting the bioprocess feasibility

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Modeling of phycocyanin production from Spirulina platensis using different light-emitting diodes
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Niño, Lilibeth | 2017-07

Phycocyanin is a high-value chromo-protein used in various industries. In this research, a simulation study of kinetics is carried out to identify different light spectra effects on microbial growth and phycocyanin production from the cyanobacteria Spirulina platensis. The results are compared with experimental data obtained from previous studies, and an acceptable accuracy is achieved in all the evaluated light spectra. Particular emphasis was placed on determining axial kinetic velocities simulated at different spectra regarding the latency, exponential and stationary microbial growth phases. According to the results obtained, cells grown in exponential phase lighted with red spectrum tend to resist the photo-limitation to a greater degree than cell exposure to white, green and yellow light. The latter is because phycocyanin allows a more excellent wavelength absorption from the red light. Contrarily, the light intensity for all spectra is reduced by around 80% at the inner bioreactor area regarding the intensity reached on the equipment surface during the stationary phase. Also, cell growth and phycocyanin production kinetic rates tend to be close to zero for all spectra, considering more than 50% of the inner bioreactor zone. This finding found in this research may be a key factor for the design of new photobioreactors so that these dark areas could be overcome by installing rotating internal lighting systems to guarantee the photosynthesis process of cyanobacteria in all regions of the bioreactor and thus avoid the phenomenon of photo-limitation due to low light intensities.

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Listar por autor "Rivera, Christian"

Economic Assessment of Itaconic Acid Production from Aspergillus Terreus using Superpro Designer

Modeling of phycocyanin production from Spirulina platensis using different light-emitting diodes

Envíos recientes

Economic Assessment of Itaconic Acid Production from Aspergillus Terreus using Superpro Designer

Modeling of phycocyanin production from Spirulina platensis using different light-emitting diodes

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Listar por autor "Rivera, Christian"

Economic Assessment of Itaconic Acid Production from Aspergillus Terreus using Superpro Designer ﻿

Modeling of phycocyanin production from Spirulina platensis using different light-emitting diodes ﻿

Envíos recientes

Economic Assessment of Itaconic Acid Production from Aspergillus Terreus using Superpro Designer

Modeling of phycocyanin production from Spirulina platensis using different light-emitting diodes

Portales Institucionales

Economic Assessment of Itaconic Acid Production from Aspergillus Terreus using Superpro Designer

Modeling of phycocyanin production from Spirulina platensis using different light-emitting diodes