Biophysical model and techno-economic assessment of carbon sequestration by microalgal ponds in Indian coal based power plants

Behera, Bunushree; Aly, Nazimdhine; Balasubramanian, P.

doi:10.1016/j.jclepro.2019.02.263

Cited by 34 publications

(4 citation statements)

References 31 publications

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“…Manickam et al report that approximately a 40 ha algal pond is required for mitigating the CO 2 emitted from 1 MW coal based power unit, at 50% capture efficiency [62]. Behera et al reported the requirements of 279 ha algal ponds to capture the flue gas from the 240 MW power Plant in Odisa [63]. The established area also depends on the total emissions of each power plant, and not all of them emit the same amounts of CO 2 , since these depend on the fuel and technology used for energy production.…”

Section: Techno-economic Analysismentioning

confidence: 99%

Techno-Economic Study of CO2 Capture of a Thermoelectric Plant Using Microalgae (Chlorella vulgaris) for Production of Feedstock for Bioenergy

et al. 2020

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A current concern is the increase in greenhouse gas emissions, mainly CO2, with anthropogenic sources being the main contributors. Microalgae have greater capacity than terrestrial plants to capture CO2, with this being an attraction for using them as capture systems. This study aims at the techno-economic evaluation of microalgae biomass production, while only considering technologies with industrial scaling potential. Energy consumption and operating costs are considered as parameters for the evaluation. In addition, the capture of CO2 from a thermoelectric plant is analyzed, as a carbon source for the cultivation of microalgae. 24 scenarios were evaluated while using process simulation tools (SuperPro Designer), being generated by the combination of cultivations in raceway pond, primary harvest with three types of flocculants, secondary harvest with centrifugation and three filtering technologies, and finally the drying evaluated with Spray and Drum Dryer. Low biomass productivity, 12.7 g/m2/day, was considered, achieving a capture of 102.13 tons of CO2/year in 1 ha for the cultivation area. The scenarios that included centrifugation and vacuum filtration are the ones with the highest energy consumption. The operating costs range from US $ 4.75–6.55/kg of dry biomass. The choice of the best scenario depends on the final use of biomass.

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Section: Techno-economic Analysismentioning

confidence: 99%

Techno-Economic Study of CO2 Capture of a Thermoelectric Plant Using Microalgae (Chlorella vulgaris) for Production of Feedstock for Bioenergy

et al. 2020

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“…For example, the cosmopolitan diatom Skeletonema costatum, whose lipid composition is adequate for biodiesel production [22], has been associated with winter bloom events [38] and could thus be cultivated during cold months. Predictive mathematical models provide comprehensive knowledge of the likely behaviour of microalgal cultures at the field scale and economic assessments to be carried out, as indicated by Bahera et al [17,39,40].…”

Section: Effect Of Temperature and Salinity On H Coffeaeformis Growth Ratementioning

confidence: 99%

“…Climate is another important source of environmental variations in terms of the quality and quantity of solar radiation, temperature (maximum, minimum and fluctuations), precipitation, evaporation and frequency and intensity of winds [15], though its effect is more unpredictable. Predictive biophysical models are therefore useful to evaluate the influence of meteorological data on microalgal performance in open ponds for biodiesel production [16,17]. Moreover, real experimental data from microalgae cultures (e.g.…”

Section: Introductionmentioning

confidence: 99%

Temperature and Salinity Effect on Tolerance and Lipid Accumulation in Halamphora coffeaeformis: an Approach for Outdoor Bioenergy Cultures

et al. 2021

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Biodiesel production from the microalgal oil of the estuarine diatom Halamphora coffeaeformis has proven to be technically viable. However, a fuller understanding of the environmental factors that regulate its tolerance and neutral lipid accumulation is required for improved mass cultivation in seawater-based outdoor raceway ponds. Meteorological conditions and evaporation processes can significantly influence factors such as the salt levels, water temperature and nutrient and light availability in these systems. Laboratory experiments with H. coffeaeformis growing in f/2 medium were therefore carried out in order to evaluate the effect of temperature and salinity on its growth and tolerance ranges and the effect of salinity on its total lipid and lipid fraction content and fatty acid methyl ester profile. Results indicate that the temperature and salinity ranges of the species were 5 °C to 30 °C and 5‰ to 95‰, respectively. The optimum temperature was between 20 and 25 °C, and the optimum salinity was 20‰. Neutral lipid accumulation increased in cells adapted at 45‰ with respect to those growing at 20‰. Total lipid composition at 45 ‰ was characterized by 85.5% neutral lipids, 2.5% phospholipids and a high percentage of C16.1 (36.4% of total fatty acids). These properties are important for an adequate quality of biodiesel. The eurytolerant behaviour of H. coffeaeformis and the effect of salinity stress on its growth and neutral lipid accumulation are demonstrated. The findings indicate the beneficial attributes of this strain for the development and feasibility of seawater-based outdoor raceway ponds for biodiesel production.

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“…Premalatha et al report that an approximately 40 ha algal pond is required for mitigating the CO 2 emitted from 1 MW coal based power unit, at 50% capture efficiency [17]. Behera et al reported the requirements of 279 ha algal ponds to capture the flue gas from the 240 MW power plant in Odisa [18]. CO 2 capture depends on the selected microalgae species, biomass productivity, and capture efficiency.…”

Section: Introductionmentioning

confidence: 99%

Technoeconomic Evaluation of Microalgae Oil Production: Effect of Cell Disruption Method

et al. 2022

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Microalgae have a high capacity to capture CO2. Additionally, biomass contains lipids that can be used to produce biofuels, biolubricants, and other compounds of commercial interest. This study analyzed various scenarios for microalgae lipid production by simulation. These scenarios include cultivation in raceway ponds, primary harvest with three flocculants, secondary harvest with pressure filter (and drying if necessary), and three different technologies for the cell disruption step, which facilitates lipid extraction. The impact on energy consumption and production cost was analyzed. Both energy consumption and operating cost are higher in the scenarios that consider bead milling (8.79–8.88 kWh/kg and USD 41.06–41.41/kg), followed by those that consider high-pressure homogenization (HPH, 5.39–5.46 kWh/kg and USD 34.26–34.71/kg). For the scenarios that consider pressing, the energy consumption is 5.80–5.88 kWh/kg and the operating cost is USD 27.27–27.88/kg. The consumption of CO2 in scenarios that consider pressing have a greater capture (11.23 kg of CO2/kg of lipids). Meanwhile, scenarios that consider HPH are the lowest consumers of fresh water (5.3 m3 of water/kg of lipids). This study allowed us to develop a base of multiple comparative scenarios, evaluate different aspects involved in Chlorella vulgaris lipid production, and determine the impact of various technologies in the cell disruption stage.

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Biophysical model and techno-economic assessment of carbon sequestration by microalgal ponds in Indian coal based power plants

Cited by 34 publications

References 31 publications

Techno-Economic Study of CO2 Capture of a Thermoelectric Plant Using Microalgae (Chlorella vulgaris) for Production of Feedstock for Bioenergy

Techno-Economic Study of CO2 Capture of a Thermoelectric Plant Using Microalgae (Chlorella vulgaris) for Production of Feedstock for Bioenergy

Temperature and Salinity Effect on Tolerance and Lipid Accumulation in Halamphora coffeaeformis: an Approach for Outdoor Bioenergy Cultures

Technoeconomic Evaluation of Microalgae Oil Production: Effect of Cell Disruption Method

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