Assessment of the impact of salinity and irradiance on the combined carbon dioxide sequestration and carotenoids production by <i>Dunaliella salina</i>: A mathematical model

Araújo, O.Q.F.; Gobbi, Clarice Neffa; Chaloub, Ricardo M.; Coelho, Maria Alice Zarur

doi:10.1002/bit.22079

Cited by 17 publications

(13 citation statements)

References 40 publications

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“…Different reactor systems and the cultivation of a wide range of microalgal strains with pure CO 2 have already been examined (Araújo et al 2009;Hanagata et al 1992;Zeiler et al 1995;Yoshihara et al 1996;Murakami and Ikenouchi 1997;Usui and Ikenouchi 1997;Ono and Cuello 2004;Lee et al 2005). De Morais and Costa (2007a, b) tried to maximise daily CO 2 biofixation of Chlorella, Scenedesmus and Spirulina strains in tubular photobioreactors and reported specific growth rates of about 0.1-0.4 h −1 .…”

Section: Discussionmentioning

confidence: 97%

Cultivation of Chlorella emersonii with flue gas derived from a cement plant

et al. 2010

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The present study reviews the options of cultivating the green alga, Chlorella emersonii, under photoautotrophic conditions with flue gas derived from a cement plant. It was conducted in the Lafarge Perlmooser plant in Retznei, Austria, where stone coal and various surrogate fuels such as used tyres, plastics and meat-and-bone meal are incinerated for heating limestone. During 30 days of cultivation, flue gas had no visible adverse effects compared to the controls grown with pure CO 2 . The semi-continuous cultivation with media recycling was performed in 5.5-L pH-stat photobioreactors. The essay using CO 2 from flue gas yielded a total of 2.00 g L −1 microalgal dry mass and a CO 2 fixation of 3.25 g L −1 . In the control, a total of 2.06 g L −1 dry mass was produced and 3.38 g L −1 CO 2 was fixed. Mean growth rates were between 0.10 day −1 (control) and 0.13 day −1 (flue gas). No accumulation of flue gas residues was detected in the culture medium. At the end of the experiment, however, the concentration of lead was three times higher in algal biomass compared to the control, indicating that cultures aerated with this type of flue gas should not be used as food supplements or animal feed.

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Section: Discussionmentioning

confidence: 97%

Cultivation of Chlorella emersonii with flue gas derived from a cement plant

et al. 2010

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“…Extensive and precise energy, material flow, and financial quantification is required when assessing new technologies that designed to operate at the industrial scale. As an example, on a volume-toarea ratio of 60 L m -2 , a microalgae culture (Dunaliella salina) productivity of 50.3 gm -2 day -1 (dry), and a carbon fraction (%) of 54.5 per unit of biomass, would sequester around 100 gCO 2 m −2 day -1 , equivalent to 1 tCO 2 ha -1 day -1 (Araujo et al 2008). Based these productivities, a 400 MW e combined cycle natural gas power plant would require around 350 ha of ponds to sequester 10% of the plants CO 2 emissions, at a cost of USD150 per tCO 2 (Araujo et al 2008) -an expensive option.…”

Section: Industrial Microalgae Biofuel Efficiency Challengesmentioning

confidence: 99%

“…As an example, on a volume-toarea ratio of 60 L m -2 , a microalgae culture (Dunaliella salina) productivity of 50.3 gm -2 day -1 (dry), and a carbon fraction (%) of 54.5 per unit of biomass, would sequester around 100 gCO 2 m −2 day -1 , equivalent to 1 tCO 2 ha -1 day -1 (Araujo et al 2008). Based these productivities, a 400 MW e combined cycle natural gas power plant would require around 350 ha of ponds to sequester 10% of the plants CO 2 emissions, at a cost of USD150 per tCO 2 (Araujo et al 2008) -an expensive option. Furthermore, an economic analysis undertaken by Chisti (2007) calculated operating costs of industrial-scale (80 ha) open microalgae ponds.…”

Section: Industrial Microalgae Biofuel Efficiency Challengesmentioning

confidence: 99%

Hybrid microalgal biofuel, desalination, and solution mining systems: increased industrial waste energy, carbon, and water use efficiencies

McHenry

2012

Mitig Adapt Strateg Glob Change

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McHenry, M.P. (2013) Hybrid microalgal biofuel, desalination AbstractThis work reviews retrofitting new waste energy, carbon and water intensive technologies into existing industrial facilities (including electricity generators) to increase net energy, carbon, and water use efficiencies. The three applications reviewed are microalgal ponds consuming flue gasses and providing thermal power station cooling services, thermally driven membrane distillation desalination, and hydrometallurgical solution mining processes to indirectly remove water contaminants, and additional power station cooling. The aim of this work is to explore the unique challenge of site-specificity of retrofitting any or all of the reviewed technologies within existing facilities for commercial operations. The theoretical basis behind higher aggregated efficiencies is essentially vertical integration of infrastructure, energy, and material flows, reducing total costs, net waste, and associated potential environmental contamination. Whilst solution mining and some thermal desalination technologies are not necessarily new in isolation, new technical developments enable these technologies to use waste heat and waste water by operating in parallel with industrial facilities, and effectively subsidise microalgae biofuel water pumping and dewatering. This research determines three fundamental developments are required to enable wide-scale industrial co-located vertical integration efficiencies: (1) fundamental engineering, (2) monitoring system innovation, and (3) technology/knowledge transfer.

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“…Available data: data from Chisti (2007) and Araújo et al (2008); (b) biomass gasification: biomass is oxidized by O 2 and H 2 O at atmospheric pressure in a gasifier at 1000°C to generate syngas with a CO:H 2 ratio = 1:2. In order to achieve this composition specification (to improve the yield of upstream processes), the mass feed ratio of H 2 O (steam) to biomass was optimized and adopted as 50%.…”

Section: Structurementioning

confidence: 99%

Pareto Optimization of an Industrial Ecosystem: Sustainability Maximization

Monteiro¹,

Silva²,

Araújo³

et al. 2009

Computer Aided Chemical Engineering

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-This work investigates a procedure to design an Industrial Ecosystem for sequestrating CO 2 and consuming glycerol in a Chemical Complex with 15 integrated processes. The Complex is responsible for the production of methanol, ethylene oxide, ammonia, urea, dimethyl carbonate, ethylene glycol, glycerol carbonate, β-carotene, 1,2-propanediol and olefins, and is simulated using UNISIM Design (Honeywell). The process environmental impact (EI) is calculated using the Waste Reduction Algorithm, while Profit (P) is estimated using classic cost correlations. MATLAB (The Mathworks Inc) is connected to UNISIM to enable optimization. The objective is granting maximum process sustainability, which involves finding a compromise between high profitability and low environmental impact. Sustainability maximization is therefore understood as a multi-criteria optimization problem, addressed by means of the Pareto optimization methodology for trading off P vs. EI.

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Assessment of the impact of salinity and irradiance on the combined carbon dioxide sequestration and carotenoids production by Dunaliella salina: A mathematical model

Cited by 17 publications

References 40 publications

Cultivation of Chlorella emersonii with flue gas derived from a cement plant

Cultivation of Chlorella emersonii with flue gas derived from a cement plant

Hybrid microalgal biofuel, desalination, and solution mining systems: increased industrial waste energy, carbon, and water use efficiencies

Pareto Optimization of an Industrial Ecosystem: Sustainability Maximization

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