Search for any green Service

Find green products from around the world in one place

Pilot Energy puts blue hydrogen before green with “first-to-market” CCS technology

Pilot Energy puts blue hydrogen before green with “first-to-market” CCS technology

ASX-listed gas junior Pilot Energy says feasibility studies have confirmed “significant opportunity” to develop a large-scale hydrogen production project using gas and novel carbon capture and storage (CCS) technology first, and renewables later, in Western Australia’s mid-west region.

Pilot said in a statement on Monday that the studies, commenced last year, aimed to assess the economic and logistical feasibility of developing a large-scale “clean” – but certainly not green – production project using the company’s existing oil and gas production operations.

Broadly, the company said the results showed Pilot was “well positioned to play a significant role in the energy transition through harnessing the world-class CCS and renewable resources of the Mid West region of Western Australia.”

More specifically, the studies found that the existing Cliff Head Oil Field offshore facilities, wells and pipelines were already suitable for CCS to the tune of 6.4 million tonnes of CO2 at an injection rate of 500,000 tonnes of CO2 per annum.

Pilot holds a 21.25% interest in the Cliff Head Oil Field through its 50% ownership of Triangle Energy, the operator of the Cliff Head Oil Field. The CCS and blue hydrogen feasibility study is being jointly funded by Pilot, APA Group and Warrego Energy.

Pilot said that the feasibility studies also highlighted the Mid West region could produce “clean ammonia” on a globally competitive basis for export into emerging Asian clean energy markets.

 

The company said the next steps would be to progress into the permitting and approvals process and front-end engineering and design for a staged development of commercialising CCS and blue hydrogen leveraging technology from US cleantech firm 8 Rivers.

8 Rivers Capital has been working on development of gas plants in the US using the proprietary technology of a company called Net Power, of which it is a co-owner, that burns natural gas with pure oxygen instead of air, producing only CO2 and water as byproducts. Excess CO2 is captured, “pipeline-ready,” for underground storage.

This will no doubt please the federal Morrison government, which as Pilot notes has prioritised CCS in its Technology Investment Roadmap, in the hope that CO2 compression, transport and storage can meet a “stretch target” of under $20 per tonne.

But whether this counts as “clean hydrogen” production is highly questionable, particularly after factoring in the emissions along the gas exploration and production life cycle.

 

Increasingly, the true “colour” of hydrogen, particularly in the export market, will determine its competitiveness in the market, with a premium being placed on renewables derived green hydrogen as businesses and governments reach for ambitious climate targets.

Still, Pilot Energy chair Brad Lingo welcomed the results of the studies, saying they outlined a clear multi-stage development path, starting with CCS and “building off this platform,” to produce clean power and hydrogen for domestic use and for export, as low-cost “clean” ammonia.

“This staged development path is very much in the reach of the company in terms of financial capacity and technical delivery taking advantage of the existing Cliff Head Oil Field infrastructure and operations,” Lingo said.

“The Company is very focused on delivering a First-to-Market CCS Project in the Mid West to anchor the further development of a Clean Hydrogen/ Ammonia and Renewable Energy Project.

“We are very much focused on engaging with NOPTA and the other relevant regulators to secure the necessary approvals to implement this project with an aim of having the first stage of the development pathway operational by 2025 and generating positive cash flow from these operations as well as delivering a material impact on carbon emissions in the Mid West,” he said.

 


 

Source Renew Economy

Liquid marbles: how this tiny, emerging technology could solve carbon capture and storage problems

Liquid marbles: how this tiny, emerging technology could solve carbon capture and storage problems

Carbon capture and storage (CCS) has been touted, again and again, as one of the critical technologies that could help Australia reach its climate targets, and features heavily in the federal government’s plan for net-zero emissions by 2050.

CCS is generally when emissions are captured at the source, such as from a coal-fired power station, trucked to a remote location and stored underground.

But critics say investing in CCS means betting on technology that’s not yet proven to work at scale. Indeed, technology-wise, the design of effective carbon-capturing materials, both solid and liquid, has historically been a challenging task.

So could it ever be a viable solution to the fossil fuel industry’s carbon dioxide emissions?

Emerging overseas research shows “liquid marbles”—tiny droplets coated with nanoparticles—could possibly address current challenges in materials used to capture carbon. And our modelling research, published yesterday, brings us a big step closer to making this futuristic technology a reality.

 

Issues with carbon capture

Under its Technology Investment Roadmap, the Morrison government considers CCS a priority low-emissions technology, and is investing A$300 million over ten years to develop it.

But the efficacy and efficiency of CCS has long been controversial due to its high-operational costs and scaling-up issues for a wider application.

An ongoing problem, more specifically, is the effectiveness of materials used to capture the CO₂, such as absorbents. One example is called “amine scrubbing“, a method used since 1930 to separate, for instance, CO₂ from  and hydrogen.

The problems with amine scrubbing include its high costs, corrosion-related issues and high losses in materials and energy. Liquid marbles can overcome some of these challenges.

This technology can be almost invisible to the naked eye, with some marbles under 1 millimetre in diameter. The liquid it holds—most commonly water or alcohol—is on the scale of microlitres (a microlitre is one thousandth of a millilitre).

The marbles have an outer layer of nanoparticles that form a flexible and porous shell, preventing the liquid within from leaking out. Thanks to this armour, they can behave like flexible, stretchable and soft solids, with a liquid core.

 

What do marbles have to do with CCS?

Liquid marbles have many unique abilities: they can float, they roll smoothly, and they can be stacked on top of each other.

Other desirable properties include resistance to contamination, low-friction and flexible manipulation, making them appealing for applications such as gas capture, drug delivery and even as miniature bio-reactors.

In the context of CO₂ capture, their ability to selectively interact with gases, liquids and solids is most crucial. A key advantage of using liquid marbles is their size and shape, because thousands of spherical particles only millimetres in size can directly be installed in large reactors.

Gas from the reactor hits the marbles, where it clings to the nanoparticle outer shell (in a process called “adsorption”). The gas then reacts with the liquid within, separating the CO₂ and capturing it inside the marble. Later, we can take out this CO₂ and store it underground, and then recycle the liquid for future processing.

This process can be a more time and cost-efficient way of capturing CO₂ due to, for example, the liquid (and potentially solid) recycling, as well as the marbles’ high mechanical strength, reactivity, sorption rates and long-term stability.

 

So what’s stopping us?

Despite recent progress, many properties of liquid marbles remain elusive. What’s more, the only way to test liquid marbles is currently through physical experiments conducted in a laboratory.

Physical experiments have their limitations, such as the difficulty to measure the  and surface area, which are important indicators of the marble’s reactivity and stability.

In this context, our new computational modelling can improve our understanding of these properties, and can help overcome the use of costly and time-intensive experiment-only procedures.

Another challenge is developing practical, rigorous and large-scale approaches to manipulate liquid marble arrays within the reactor. Further computational modelling we’re currently working on will aim to analyse the three-dimensional changes in the shapes and dynamics of liquid marbles, with better convenience and accuracy.

This will open up new horizons for a myriad of engineering applications, including CO₂ capture.

 

Beyond carbon capture

Research on liquid marbles started off as just an inquisitive topic around 20 years ago and, since then, ongoing research has made it a sought-after platform with applications beyond .

This cutting-edge technology could not only change how we solve climate problems, but environmental and medical problems, too.

Magnetic liquid marbles, for example, have demonstrated their potential in biomedical procedures, such as , due to their ability to be opened and closed using magnets outside the body. Other applications of liquid marbles include gas sensing, acidity sensing and pollution detection.

With more modelling and experiments, the next logical step would be to scale up this  for mainstream use.

 


 

Source Phys.org