scholarly journals Biotechnology Carbon Capture and Storage by Microalgae to Enhance CO2 Removal Efficiency in Closed-System Photobioreactor

10.5772/62915 ◽  
2016 ◽  
Author(s):  
Astri Rinanti
Keyword(s):  
Removal Efficiency ◽  
Closed System ◽  
Carbon Capture ◽  
Carbon Capture And Storage ◽  
Co2 Removal ◽  
Co2 Removal Efficiency ◽  
And Storage

Biotechnology Carbon Capture and Storage (CCS) by Mix-culture Green Microalgae to Enhancing Carbon Uptake Rate and Carbon Dioxide Removal Efficiency with Variation Aeration Rates in Closed System Photobioreactor

2014 ◽  
Vol 69 (6) ◽  
Author(s):  
Astri Rinanti ◽  
Kania Dewi ◽  
Edwan Kardena ◽  
Dea Indriani Astuti
Keyword(s):  
Removal Efficiency ◽  
Uptake Rate ◽  
Carbon Capture ◽  
Carbon Capture And Storage ◽  
Aeration Rate ◽  
Carbon Uptake ◽  
Co2 Removal ◽  
Green Microalgae ◽  
Co2 Removal Efficiency ◽  
And Storage

Carbon dioxide (CO2) sequestration by green microalgae is receiving increased attention in alleviating the impact of increasing CO2 in the atmosphere. The goal of this study was to explore the capacity of mixed culture green microalgae Chlorella sp, Scenedesmus obliquus, and Ankistrodesmus sp. as carbon capture and storage agent to enhance CO2 uptake rate and CO2 removal efficiency which was observed at elevated CO2 aeration rates of 2, 5, and 8 L min-1 supplied to vertical photobioreactor continuously in batch system culture. The operation condition of this research were 6.5-7.5 pH, temperature of 300C, light intensity  of 4000 lux with 16 hours light period and 8 hours dark period, and high pure CO2 elevated level of 5 to 18 (concentration in %; v/v in the aeration gas) as inorganic carbon. The maximum CO2 removal efficiency of the mix culture was 59.80% when the biomass was obtained at 4.90 gL-1 and CO2 flow rate (Lmin-1) of 5 vvm in a vertical photobioreactor. The value of CO2 removal efficiency improved by almost 200% and 120% as compared to that in the low and high aeration rate (2 Lmin-1 and 8 Lmin-1) respectively. The CO2 up take rate of a mixed culture reach 979.62 mg carbon L-1day-1, which was enhancing by 3-fold in high aeration rate (8 Lmin-1). The results showed that the CO2 removal efficiency and carbon uptake rate was related to biomass concentration and aeration rate of CO2 supplied.

scholarly journals A Review on CO2 Capture Technologies with Focus on CO2-Enhanced Methane Recovery from Hydrates

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 387
Author(s):  
Salvatore F. Cannone ◽  
Andrea Lanzini ◽  
Massimo Santarelli
Keyword(s):  
Natural Gas ◽  
Carbon Capture ◽  
Power Plants ◽  
Large Scale ◽  
Carbon Capture And Storage ◽  
Co2 Removal ◽  
Methane Recovery ◽  
The World ◽  
Co2 Transportation ◽  
And Storage

Natural gas is considered a helpful transition fuel in order to reduce the greenhouse gas emissions of other conventional power plants burning coal or liquid fossil fuels. Natural Gas Hydrates (NGHs) constitute the largest reservoir of natural gas in the world. Methane contained within the crystalline structure can be replaced by carbon dioxide to enhance gas recovery from hydrates. This technical review presents a techno-economic analysis of the full pathway, which begins with the capture of CO2 from power and process industries and ends with its transportation to a geological sequestration site consisting of clathrate hydrates. Since extracted methane is still rich in CO2, on-site separation is required. Focus is thus placed on membrane-based gas separation technologies widely used for gas purification and CO2 removal from raw natural gas and exhaust gas. Nevertheless, the other carbon capture processes (i.e., oxy-fuel combustion, pre-combustion and post-combustion) are briefly discussed and their carbon capture costs are compared with membrane separation technology. Since a large-scale Carbon Capture and Storage (CCS) facility requires CO2 transportation and storage infrastructure, a technical, cost and safety assessment of CO2 transportation over long distances is carried out. Finally, this paper provides an overview of the storage solutions developed around the world, principally studying the geological NGH formation for CO2 sinks.

Sign in / Sign up

Export Citation Format

Share Document