scholarly journals Using seawater-based Na2CO3 medium for scrubbing the CO2 released from Bio-CNG plant for enhanced biomass production of Pseudanabaena limnetica

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Sagar Jayant Rambhiya ◽  
Chaitanya Sampat Magar ◽  
Manjushri Arun Deodhar
Keyword(s):  
Control System ◽  
Biomass Production ◽  
Carbon Capture ◽  
Carbon Capture And Storage ◽  
Environmental Safety ◽  
Algal Strain ◽  
Cell Factories ◽  
Mode Of Operation ◽  
And Storage

AbstractThe concentration of CO2, one of the most important greenhouse gases (GHG), has reached to 409.8 ± 0.1 ppm in 2019. Although there are many carbon capture and storage (CCS) methods, they are very costly and their long term use raises concern about environmental safety. Alternatively, bio-sequestration of CO2 using microalgal cell factories has emerged as a promising way of recycling CO2 into biomass via photosynthesis. In the present study, Indigenous algal strain Pseudanabaena limnetica was cultivated in pneumatically agitated 60-L flat-panel photobioreactor system. The gas was released from Bio-CNG plant as by-product into Na2CO3-rich medium and cultivated in semicontinuous mode of operation. It was observed that when CO2 was sparged in seawater-based 0.02 M Na2CO3 solution, maximum CO2 was dissolved in the system and was used for algal cultivation. Control system produced 0.64 ± 0.035 g/L of biomass at the end of 15 days, whereas CO2 sparged Na2CO3 medium produced 0.81 ± 0.046 g/L of biomass. When CO2 from Bio-CNG station was fed, it resulted in biomass production of 1.62 ± 0.070 g/L at the end of 18 days compared to 1.46 ± 0.066 g/L of biomass produced in control system which was not fed with gas released from Bio-CNG plant as by-product. Thus, feeding CO2 directly into Na2CO3 medium and operating the system semicontinuously would be efficient for scrubbing CO2 from commercial Bio-CNG plant. This study proves that feeding CO2 gas from Bio-CNG plant into Na2CO3-rich alkaline system can be used to feed algae for enhanced biomass production.

Burying Carbon under the Sea: An Initial Exploration of Public Opinions

2002 ◽  
Vol 13 (6) ◽  
pp. 883-900 ◽  
Author(s):  
Clair Gough ◽  
Ian Taylor ◽  
Simon Shackley
Keyword(s):  
Carbon Capture ◽  
Preliminary Investigation ◽  
Carbon Capture And Storage ◽  
The Public ◽  
Public Reaction ◽  
Ocean Sequestration ◽  
Storage Technologies ◽  
Policy Communities ◽  
And Storage

Geological and ocean sequestration of carbon dioxide is a potential climate change mitigation option that is currently receiving an increasing level of attention within business, academic and policy communities. This paper presents a preliminary investigation of possible public reaction to the technologies under consideration. Using a focus group approach, we consider the similarities between carbon storage technologies and analogous technologies that have generated strong reactions with the public. Initial results suggest that, in principle, carbon capture and storage may be seen as an acceptable approach as a bridging policy while other options are developed. However, concerns were raised regarding the safety of storage and trust in the ability of the various institutions to oversee the process in the long term. This analysis forms part of an on-going study which will continue to investigate the perceptions of a range of stakeholders.

scholarly journals An experimental study of the CO2 hydrates production for the long term storage

2021 ◽  
Vol 345 ◽  
pp. 00011
Author(s):  
Ondřej Bartoš ◽  
Matěj Hrnčíř
Keyword(s):  
Gas Hydrates ◽  
Carbon Capture ◽  
Transformation Efficiency ◽  
Carbon Capture And Storage ◽  
Electricity Production ◽  
Long Term Storage ◽  
Set Up ◽  
And Storage ◽  
Term Storage

An aim of the paper is to show recent data obtained from a new experimental set-up build for the production of the CO2 gas hydrates. The purpose of the experimental set-up is to analyse the practical aspects of the transformation gaseous CO2 to the hydrates. The deserving effort to decrease impacts of the global warming is containing the more questionable attempt to capture the CO2 produced within the electricity production and to avoid a releasing to the atmosphere. The storage in the form of the gas hydrates present an alternative way to more known technologies involved in the projects of CCS (Carbon Capture and Storage). The production of the gas hydrate is observed in the set-up with simultaneously acquired data of state condition close to the phase boundary. The presented work has two goals, first is the estimation of the transformation efficiency of the CO2 to the hydrates in compare with the theory and second goal is obtaining of the data for new CO2 hydrates production set-up with liquid circulation and possibility to separate pure hydrate. The experimental analysis of the gas hydrates production process can help to estimate the practical aspects of the hydrates production for a possibility of CO2 storage in this form.

scholarly journals The Economic Accessibility of CO2 Sequestration through Bioenergy with Carbon Capture and Storage (BECCS) in the US

Land ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 299 ◽  
Author(s):  
Matthew Langholtz ◽  
Ingrid Busch ◽  
Abishek Kasturi ◽  
Michael R. Hilliard ◽  
Joanna McFarlane ◽  
...  
Keyword(s):  
Power Generation ◽  
Co2 Sequestration ◽  
Carbon Capture ◽  
Carbon Capture And Storage ◽  
Power Sources ◽  
Sequestration Potential ◽  
The Us ◽  
Near Term ◽  
And Storage

Bioenergy with carbon capture and storage (BECCS) is one strategy to remove CO2 from the atmosphere. To assess the potential scale and cost of CO2 sequestration from BECCS in the US, this analysis models carbon sequestration net of supply chain emissions and costs of biomass production, delivery, power generation, and CO2 capture and sequestration in saline formations. The analysis includes two biomass supply scenarios (near-term and long-term), two biomass logistics scenarios (conventional and pelletized), and two generation technologies (pulverized combustion and integrated gasification combined cycle). Results show marginal cost per tonne CO2 (accounting for costs of electricity and CO2 emissions of reference power generation scenarios) as a function of CO2 sequestered (simulating capture of up to 90% of total CO2 sequestration potential) and associated spatial distribution of resources and generation locations for the array of scenario options. Under a near-term scenario using up to 206 million tonnes per year of biomass, up to 181 million tonnes CO2 can be sequestered annually at scenario-average costs ranging from $62 to $137 per tonne CO2; under a long-term scenario using up to 740 million tonnes per year of biomass, up to 737 million tonnes CO2 can be sequestered annually at scenario-average costs ranging from $42 to $92 per tonne CO2. These estimates of CO2 sequestration potential may be reduced if future competing demand reduces resource availability or may be increased if displaced emissions from conventional power sources are included. Results suggest there are large-scale opportunities to implement BECCS at moderate cost in the US, particularly in the Midwest, Plains States, and Texas.

Demonstrating geosequestration in Australia: the CO2CRC Otway Project

2009 ◽  
Vol 49 (2) ◽  
pp. 601
Author(s):  
Sandeep Sharma ◽  
Peter Cook ◽  
Charles Jenkins
Keyword(s):  
Carbon Capture ◽  
Carbon Capture And Storage ◽  
Regulatory Regime ◽  
Atmospheric Conditions ◽  
Gas Field ◽  
Near Surface ◽  
Long Term Storage ◽  
And Storage ◽  
Baseline State

The CO2CRC has a demonstration storage project underway in the Otway Basin of southwest Victoria. The aim of the project is to demonstrate that carbon capture and storage (CCS) can be performed under Australian conditions. The project involves extracting CO2 rich gas from an existing field and injecting it into a nearby depleted natural gas field for long-term storage. Injection commenced in April 2008, and approximately 100,000 tonnes of CO2 are planned to be injected through a new injection well drilled in 2007. A multi-disciplinary monitoring and verification (M&V) program has been in place from late 2005 and a baseline state of the subsurface, near surface and atmospheric conditions has been comprehensively defined prior to the commencement of injection. The project has also been instrumental in unravelling the legislative overlaps between jurisdictions and has helped shape the regulatory regime being developed by the Victorian Government. At the present time over 35,000 tonnes of CO2 has been injected and a variety of monitoring data collected. This paper aims to provide an update on the holistic project and how some of the findings may lead to expediting commercial uptake of CCS in Australia.

General Equilibrium Analysis of Developing Clean and Low-Carbonized Coal-Fired Power Technologies in China

2011 ◽  
Vol 347-353 ◽  
pp. 1127-1131
Author(s):  
Ai Jun Li ◽  
Zheng Li
Keyword(s):  
Carbon Capture ◽  
Carbon Capture And Storage ◽  
Power Industry ◽  
Equilibrium Analysis ◽  
Cge Model ◽  
High Efficient ◽  
Removal Technology ◽  
Calculation Results ◽  
And Storage

This paper analyzes the effects of clean and low-carbonized development of coal-fired power industry in China by a hybrid CGE model, which links the engineering sub-model with an energy CGE model and an energy balance sub-model. According to the calculation results, the current environmental protection target of coal-fired power industry of China should center on developing and spreading high-efficient denitrifization technology, mercury removal technology should be gradually combined with desulfurization and denitrifization technology in mid-long term, and carbon capture and storage technology should be introduced in long-term.

Low-carbon aims need a new set of energy technologies

2020 ◽  
Keyword(s):  
Carbon Capture ◽  
New Technologies ◽  
Carbon Capture And Storage ◽  
Low Carbon ◽  
Power Sector ◽  
Content Type ◽  
Energy Technologies ◽  
Natural Gas Demand ◽  
And Storage

Significance This will have significant impact on the greening of the power sector and for new technologies dependent on affordable electricity including electric vehicles and the production of bioenergy and hydrogen. Yet in some cases, progress depends on a breakthrough in carbon capture and storage (CCS). Impacts Renewable energy sectors look likely to emerge from COVID-19 impacts stronger than before. Long-term natural gas demand is at risk if CCS development is delayed or unrealised. Electrification technologies, boosted by cheaper power, may receive enhanced regulatory support.

scholarly journals Qatar’s effort for the deployment of Carbon Capture and Storage

2017 ◽  
Vol 19 (3) ◽  
pp. 453-457 ◽  
Keyword(s):  
Co2 Emissions ◽  
Carbon Capture ◽  
Negative Impact ◽  
Carbon Capture And Storage ◽  
Advanced Technology ◽  
Negative Effects ◽  
Technical Potential ◽  
Major Shift ◽  
And Storage

Carbon Capture and Storage (CCS) is an advanced technology that has the technical potential to provide dual advantages: (1) it helps countries maintain their hydrocarbon – driven economic advancement, such as Gulf Corporation Council countries (GCC) and (2) mitigating the negative effects of increasing CO2 emissions. A full system of CCS consists of CO2 separation, compression, transportation, injection into underground reservoirs and long-term monitoring. Qatar is very well aware of the adverse consequences of the rise of CO2 emissions and therefore started investing heavily in carbon capture and Storage and took major steps to mitigate the negative impact of CO2. It is believed that CCS would provide a major shift in mitigation the CO2 emissions. This paper will analyze the potential of deployment of CCS in Qatar as well as the efforts expended so far in that regard.

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