Removal of carbon and nitrogen in wastewater from a poultry processing plant in a photobioreactor cultivated with the microalga <i>Chlorella vulgaris</i>

Gutiérrez-Casiano, Nayeli; Hernández-Aguilar, Eduardo; Alvarado-Lassman, Alejandro; Méndez-Contreras, Juan Manuel

doi:10.1080/10934529.2022.2096986

Cited by 8 publications

(5 citation statements)

References 55 publications

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“…Herschel-Bulkley fluids are also found in various environmental systems, such as wastewater treatment, sediment transport in rivers, and the flow of mudslides. In these scenarios, the flow behavior in flexible channels play a vital role in understanding and managing environmental processes [29,30,31,32].…”

Section: Introductionmentioning

confidence: 99%

Yield-stress shear thinning and shear thickening fluid flows in deformable channels

Garg,

Prasad

2023

Preprint

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Yield stress shear thinning/thickening fluids flow through flexible channels, tubes are widespread in the natural world with many technological applications [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]. In this paper, we have derived analytical formulae for the velocity profiles and flow rate using the Herschel-Bulkley rheological model in the rigid and deformable shallow channels under lubrication approximation. To represent deformable walls, we have utilized small displacement structural mechanics and perturbation theory presented by Gervais et al. [12] and Christov et al. [13], respectively. The newly derived formulae also facilitate the flow dynamics of Newtonian fluids, power-law fluids, and Bingham fluids as its limiting cases, which have been previously derived in the literature [12, 13, 14, 15]. We find that the deformability increases the effective channel height and the flow rate in the channel. We find many scalings for the flow rate under different regimes of applied pressure and the deformability parameter. We also find that increasing the yield stress leads to a decrease in the velocity in the plug flow as well as in the non-plug flow regions. Increasing yield stress also leads to increasing the yield surface height and the solid plug in the central region due to which decreasing in the flow rate. We also find that the shear thinning/thickening index does not affect the plug height, although as the index increases, the flow rate starts to decrease due to the corresponding increase in shear thickening of the material.

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Section: Introductionmentioning

confidence: 99%

Yield-stress shear thinning and shear thickening fluid flows in deformable channels

Garg,

Prasad

2023

Preprint

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“…and Spirulina maxima present a metal absorption percentage greater than 90% [54], which causes these chemical species to not be detected in the process effluent by atomic absorption spectrometry. In a previous study by Gutierrez-Casiano et al [44] this effect was demonstrated.…”

Section: Spirulina Maximamentioning

confidence: 73%

“…The graph shows the three steps of the process: photobioreactors containing only wastewater, the stage in which microalgae are added for wastewater treatment, and finally, the addition of micronutrients to the algal cultures, where the greatest removal of organic matter is achieved. It is important to mention that microalgae do not carry out the COD removal process in waste, but the aerobic bacteria present in the effluent generate CO2, which is subsequently used for photosynthesis by the microalgae [44]. The response surface shown in Figure 4b shows a decrease in this parameter throughout the treatment at all three doses, which indicates that any dose is suitable for improving the COD removal efficiency.…”

Section: Chlorella Sppmentioning

confidence: 94%

Kinetics of Obtaining Microalgal Biomass and Removal of Organic Contaminants in Photobioreactors Operated with Microalgae—Study Case: Treatment of Wastewater from a Poultry Slaughterhouse

Pérez-Guzmán,

Hernández-Aguilar,

Alvarado-Lassman

et al. 2024

Water

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Increases in poultry industry production have resulted in the generation of more hazardous effluents with high nitrogen and chemical oxygen demand (COD) concentrations. It is necessary to develop more efficient technologies in terms of water purification without the need to increase the volumes of commonly used reactors. This work analyzed the addition of micronutrients (Mo, Zn, Cu, and Mn) for the cultivation of the microalgae Chlorella spp. and Spirulina maxima in poultry wastewater. The effects of micronutrients on the production of biomass and algal cells were also assessed. For the Chlorella species, removal efficiencies of up to 99.14% for COD and 99.33% for nitrogen were achieved; for the Spirulina strain, these efficiencies were 98% for COD and 99% for nitrogen. The modified Gompertz equation was used to analyze the kinetic parameters. For both microalgae, the R2 values were greater than 98%. The results indicated that the dose with the highest algal cell generation rate was dose 2 for Chlorella spp., at 4.35 days, and dose 1 for Spirulina maxima, at 6.26 days. Microalgae are biological alternatives suitable for wastewater treatment, and their pollutant removal efficiency can increase with the addition of micronutrients, which has additional benefits for the production of valuable biomasses for industrial applications.

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“…However, with 15%, the greatest growth occurred on day 6 (from 1.92 x10 7 to 5.84 x10 7 cells/mL) and with 20%, the greatest growth occurred on day 15 (from 2.64 x10 7 to 5.44 x10 7 cells/mL). These results are due to the fact that wastewater has a complex physicochemical composition and the nutrients that microalgae need for growth may be limited or excessive depending on the inoculum-substrate relationship (Gutiérrez-Casiano et al, 2022).…”

Section: Resultsmentioning

confidence: 99%

“…In PM, a decrease was observed in 2 of the 3 concentrations analyzed. High COD concentrations directly affect turbidity, making it difficult for algae to receive the light intensity necessary for their growth (Gutiérrez-Casiano et al, 2022). Another important factor is the presence of microorganisms that can inhibit the growth of the species.…”

Section: Resultsmentioning

confidence: 99%

Removal of organic matter during adaptation of Nannochloropsis oculata in livestock waste

Sales-Pérez,

Sales-Chávez,

Romero-Mota

et al. 2023

Renew. energ. biomass sustain

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Microalgae, like plants, contribute significantly to the development of the oxygen biogeochemical cycle due to their high photosynthetic efficiency. In addition, they provide high yields of polyunsaturated fatty acids, sterols, proteins, terpenoids, and pigments, among others. Therefore, different species of microalgae have been studied and used on a laboratory scale to carry out processes such as wastewater treatment or aerobic bioconversion, which are presented as sustainable and viable alternatives for the treatment and recovery of organic waste (OW), usually rich in carbohydrates, lipids and proteins. In the present investigation, the removal of organic matter was evaluated during the adaptation of Nannochloropsis oculata in residues of poultry wastewater and swine origin, obtained from technical and semi-technical plants, respectively, located in the high mountain zone of the state of Veracruz, Mexico. The experiment was carried out in 250 mL discontinuous photobioreactors with a working volume of 200 mL, where 3 inoculum-substrate ratios were studied for each organic residue: 10, 15 and 20% inoculum in poultry wastewater (PWW) and 30, 50 and 70% inoculum in pig manure (PM). In addition, the conditions of temperature (20 ± 2 °C), illumination (2000 lx), photoperiod of 12/12 (light/dark) and continuous aeration were controlled. It was shown that N. oculata can tolerate alkaline conditions of pH ≥ 10 and contributes to the reduction of soluble organic matter in OW. PWW and PM were found to be viable media for the survival of N. oculata. Finally, regarding the inoculum concentrations studied, the most appropriate were 10% for PWW and 70% for PM.

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Removal of carbon and nitrogen in wastewater from a poultry processing plant in a photobioreactor cultivated with the microalga Chlorella vulgaris

Cited by 8 publications

References 55 publications

Yield-stress shear thinning and shear thickening fluid flows in deformable channels

Yield-stress shear thinning and shear thickening fluid flows in deformable channels

Kinetics of Obtaining Microalgal Biomass and Removal of Organic Contaminants in Photobioreactors Operated with Microalgae—Study Case: Treatment of Wastewater from a Poultry Slaughterhouse

Removal of organic matter during adaptation of Nannochloropsis oculata in livestock waste

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