Operational Strategies for Lab scale Horizontal Tubular Photobioreactor for Mitigation of CO2 Using an Indigenous Thermophilic Microalgal Strain Geitlerinema sulphureum

Kenekar, Anuja A.

doi:10.4172/2157-7463.1000176

Cited by 4 publications

(2 citation statements)

References 10 publications

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“…This too may be compensated for by supplying higher CO 2 concentrations. Decreasing the rate at which CO 2 is injected can also be used to increase its residence time [53]. In our experiments, CO 2 was injected at the bottom of the PBR at a relatively high rate (200 L h −1 ) in order to overcome the isostatic pressure due to the height of the growth medium.…”

Section: Discussionmentioning

confidence: 99%

Effects of Temperature and Other Operational Parameters on Chlorella vulgaris Mass Cultivation in a Simple and Low-Cost Column Photobioreactor

Bamba

Lozano

Adjé

et al. 2015

Appl Biochem Biotechnol

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Mass production of microalgae worldwide, and even more so in developing countries, is strongly contingent upon the availability of economical and efficient photobioreactors (PBRs) that are amenable for use in resource-limited environments. Such options are limited. This work assesses the effects of temperature, CO2 enrichment, and mixing by air + CO2 bubbling on Chlorella vulgaris biomass production in a simple, low-cost 84-L column PBR. Cultivation at 25, 30, and 35 °C in a batch process showed that biomass production was negatively affected above 30 °C. Specific growth rates at each temperature were 0.75, 0.76, and 0.63 day(-1), respectively, with batch productivities of 70.50, 81.67, and 35.83 mg L(-1) day(-1). While a relatively low CO2/air ratio (1 %) seemed beneficial during the early stages of cultivation, higher concentrations were required to maintain growth rate and achieve higher biomass concentrations around 1000 mg L(-1). Cultivation with air + CO2 bubbling rates of 100, 200, and 400 L h(-1) led to specific growth rates (and batch productivities) of 0.64 day(-1) (59.58 mg L(-1) day(-1)), 0.74 day(-1) (81.67 mg L(-1) day(-1)), and 0.80 day(-1) (86.67 mg L(-1) day(-1)), respectively. The results indicate that high biomass productivities of C. vulgaris can be obtained up to 30 °C with moderate (2 %) to high (10 %) CO2 in a fairly simple PBR.

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Section: Discussionmentioning

confidence: 99%

Effects of Temperature and Other Operational Parameters on Chlorella vulgaris Mass Cultivation in a Simple and Low-Cost Column Photobioreactor

Bamba

Lozano

Adjé

et al. 2015

Appl Biochem Biotechnol

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“…Kenekar et al [28], have studied the effect of inoculum size on a growth of Geitlerinema sulphureum in 25 L capacity tubular photobioreactor. In this PBR when the lower inoculum (0.25 g/L) was utilized the culture was found to be stuck to the wall of the tube after overnight light exposure.…”

Section: Optimization Of Culture Inoculum Sizementioning

confidence: 99%

Operational Strategies for Cost Effective Mass Cultivation of Halophilic Microalgal Strain Pseudanabaena limnetica in 1000 L Flat Panel Photobioreactor

Sampat¹,

Arun²

2018

J Pet Environ Biotechnol

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Worldwide microalgae have been known for their wide industrial applications since many centuries, but large scale cultivation of algae in photo bioreactors is still having many constraints with regards to construction cost, system dimensions, culture sustainability and productivity. Algal feedstock production is impended by failure of translation of laboratory studies to field scale ups. The present research work deals with the construction of the low cost flat panel photobioreactor system and optimization of operational strategies. The microalgal strain selected for mass cultivation is an indigenous halophilic Pseudanabaena limnetica species, which sustains at high temperature and light intensity of summer season and it could be grown in marine water. Therefore, actual seawater has been utilized for cost effective biomass production. Flat panel photobioreactor was scaled up from 8 L to 250 L. Three airlift panels with dimensions of: length × height × breadth as 25 cm × 38 cm × 10 cm (8 L), 50 cm × 70 cm × 20 cm (60 L) and 100 cm × 110 cm × 28 cm (250 L) have been developed. The optimization of air flow rate and sparger pore size was conducted. Physical parameters like, Sparger velocity (ν) m/s along with change in Reynolds number (Re), superficial velocity of gas (Usg), gas holdup (ɛ) were studied for their efficiency to support algal growth. Also optimization of other important parameters like light intensity, inoculum size was carried out in laboratory condition and correlated with the biomass production. After optimization each PBR was operated in outdoor conditions. Electric power consumption, its cost estimation, total biomass productivity and operational feasibility of the developed photobioreactor system were also discussed. After optimization of operational strategy for working of photo bioreactors in laboratory and outdoor conditions, 60 L flat panel photobioreactor was found to be most suitable for large scale cultivation of P. Limnetica. Therefore attempts have been initiated to construct and assemble the 1000 L photobioreactor system.

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Application note—A novel, low-cost pH-controlled solenoid-based CO2 dosing device for microalgal and cyanobacterial cultivation systems

Khan,

Das,

Thaher

et al. 2024

Smart Agricultural Technology

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Operational Strategies for Lab scale Horizontal Tubular Photobioreactor for Mitigation of CO2 Using an Indigenous Thermophilic Microalgal Strain Geitlerinema sulphureum

Cited by 4 publications

References 10 publications

Effects of Temperature and Other Operational Parameters on Chlorella vulgaris Mass Cultivation in a Simple and Low-Cost Column Photobioreactor

Effects of Temperature and Other Operational Parameters on Chlorella vulgaris Mass Cultivation in a Simple and Low-Cost Column Photobioreactor

Operational Strategies for Cost Effective Mass Cultivation of Halophilic Microalgal Strain Pseudanabaena limnetica in 1000 L Flat Panel Photobioreactor

Application note—A novel, low-cost pH-controlled solenoid-based CO2 dosing device for microalgal and cyanobacterial cultivation systems

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