Cultivation of Chlorella sp. GD using piggery wastewater for biomass and lipid production

Kuo, Chiu Mei; Chen, Tsai-Yu; Lin, Tsung-Hsien; Kao, Chien Ya; Lai, Jinn Tsyy; Chang, Jo Shu; Lin, Chih Sheng

doi:10.1016/j.biortech.2015.07.026

Cited by 115 publications

(49 citation statements)

References 32 publications

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“…In this study, obtained biomass productivity data evidenced that Chlorella emersonii is one of the promising candidates for the polishing of the secondary effluent of a livestock wastewater treatment plant. Our statistical results also confirm that it can be applicable to wide range of TN concentrations since the growth kinetics do not significantly depend on nitrogen concentration [14,16,21].…”

Section: Discussionsupporting

confidence: 72%

Photoautotrophic Microalgae Screening for Tertiary Treatment of Livestock Wastewater and Bioresource Recovery

Kim

2017

Water

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Photoautotrophic microalgae offer high promise for a tertiary treatment of livestock wastewater owing to their rapid growth and nutrient uptake. To screen better microalga for the tertiary treatment, batch photobioreactor tests were conducted using Chlorella emersonii, Chlorella sorokiniana, and Botryococcus braunii. This study evaluated their specific growth rates, CO 2 utilization rates, and nutrient removal rates to provide appropriate selection guidelines. Based on statistical comparisons, results indicate that selecting the right microalgae was the key to success in the tertiary treatment since each microalga responded differently, even under the same light, temperature, and nutrient conditions. Among the tested species, Chlorella emersonii was found to present the fastest photoautotrophic growth, total inorganic carbon (TIC) utilization, and nutrient removal for livestock wastewater treatment. Regression results identified that its specific growth and total nitrogen removal rates were as high as 0.51 day −1 and 0.18 day −1 , respectively. Estimated TIC utilization over the supplied TIC was much higher (~34%) than those of others (11%-18%). This systemic evaluation of rate-limiting factors provides a quantitative understanding of the kinetic-based selection strategy of microalgae to polish livestock wastewater with better effluent quality.

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Section: Discussionsupporting

confidence: 72%

Photoautotrophic Microalgae Screening for Tertiary Treatment of Livestock Wastewater and Bioresource Recovery

Kim

2017

Water

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“…Several similar studies only consider the model for the cultivation of biomass and leave out the preparation of the preculture that is necessary for feeding the raceway pond. In this study, it was established that the preculture was performed in a tubular photobioreactor, achieving a final biomass concentration of 1.5 g/L [65], which is then mixed with the culture medium and fed to the raceway pond. It has been reported that the cultivation of biomass in photobioreactors is more efficient in biomass production, but the energy consumption is higher in these systems [66][67][68].…”

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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“…However, at this level of N addition, biomass yield decreased to 3.64 g•L −1 (Figure 4). A similar study was carried out in 100% piggery wastewater reported that the maximum specific growth rate and biomass productivity of microalga obtained were 0.839 d −1 and 0.681 g•L −1 •d −1 , respectively [21]. Another study showed that in a semi-continuous cultivation of microalgae, the specific growth rate and biomass of Chlorella sp.…”

Section: Effect Of Different Levels Of Nitrogen On Growth and Biomassmentioning

confidence: 64%

Assessment of Biomass Productivities of <i>Chlorella vulgaris</i> and <i>Scenedesmus obliquus</i> in Defined Media and Municipal Wastewater at Varying Concentration of Nitrogen

Fadeyi¹,

Dzantor²,

Adeleke³

2016

JWARP

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Microalgae are emerging as one of the most promising long-term sustainable sources of renewable energy. Studies were conducted on two freshwater Chlorophytes, Chlorella vulgaris and Scenedesmus obliquus to evaluate heterotrophic growth rate and biomass productivity in filter-sterilized defined medium (BG 11) and municipal wastewater, both with varying concentrations of nitrogen (N). For each isolate, cultures were separately incubated in triplicate at room temperature with constant agitation on a shaker at 150 rpm for 9 days. In 0.25 mg N/L BG11 medium, the growth rate and biomass productivity of C. vulgaris were 0.28 day −1 and 3.5 g•L −1 , respectively. In wastewater, the same amount of N addition resulted in a higher growth rate 0.44 day −1 and associated biomass productivity of 4.96 g•L −1. Increasing N levels to 0.5 mg N/L in BG11 caused an increase in growth rate (0.37 day −1) and biomass productivity (4.28 g•L −1), while the increase in N in wastewater caused growth to decline to 0.32 day −1 with decreased biomass productivity of 2.19 g•L −1. A further increase in N to 1.0 mg N/L in BG11 caused an increase in the growth rate (0.43 day −1) and a decrease in biomass productivity (3.64 g•L −1), while in wastewater, growth rate and productivity of C. vulgaris were 0.32 day −1 and 2.31 g•L −1 , respectively. Overall, C. vulgaris grew faster and produced greater biomass than S. obliquus under comparable conditions. Based on high growth rate and biomass productivity of C. vulgaris, it could be a potential candidate for further consideration for simultaneous wastewater treatment and biofuel production.

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Cultivation of Chlorella sp. GD using piggery wastewater for biomass and lipid production

Cited by 115 publications

References 32 publications

Photoautotrophic Microalgae Screening for Tertiary Treatment of Livestock Wastewater and Bioresource Recovery

Photoautotrophic Microalgae Screening for Tertiary Treatment of Livestock Wastewater and Bioresource Recovery

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

Assessment of Biomass Productivities of <i>Chlorella vulgaris</i> and <i>Scenedesmus obliquus</i> in Defined Media and Municipal Wastewater at Varying Concentration of Nitrogen

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Cultivation of Chlorella sp. GD using piggery wastewater for biomass and lipid production

Cited by 115 publications

References 32 publications

Photoautotrophic Microalgae Screening for Tertiary Treatment of Livestock Wastewater and Bioresource Recovery

Photoautotrophic Microalgae Screening for Tertiary Treatment of Livestock Wastewater and Bioresource Recovery

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

Assessment of Biomass Productivities of &lt;i&gt;Chlorella vulgaris&lt;/i&gt; and &lt;i&gt;Scenedesmus obliquus&lt;/i&gt; in Defined Media and Municipal Wastewater at Varying Concentration of Nitrogen

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Assessment of Biomass Productivities of <i>Chlorella vulgaris</i> and <i>Scenedesmus obliquus</i> in Defined Media and Municipal Wastewater at Varying Concentration of Nitrogen