Associate Professor Praveen Linga (left) and Dr Gaurav Bhattacharjee (right) holding solidified natural gas pellets. Behind them is a prototype of the machine they used in their patented conversion process. This work was conducted in the Linga Lab @ NUS.
Natural gas is the cleanest of all fossil fuels, but storing it safely and affordably remains a challenge. Now, engineers from NUS have devised a method to convert natural gas into a non-explosive solid that can be easily stored and transported. Using a novel, low-toxicity additive mixture they formulated, the conversion can be completed in just 15 minutes – the fastest time so far.
Fast, safe and portable way to store natural gas
The NUS team worked on a process of converting natural gas into a solid form known as gas hydrates, or combustible ice, which consists of molecules of natural gas trapped in “cages” formed by water molecules. In fact, nature stores natural gas this way, but the process is extremely slow. Other researchers have previously managed to speed it up artificially, but they resorted to using highly toxic additives which are unsafe for both the environment and personnel involved.
The new additive mixture formulated by the NUS researchers contains L-tryptophan, well known as an essential amino acid in people’s diet. This muscle-building amino acid can also greatly speed up the caging of natural gas into solid hydrate. The NUS formulation produces the fastest reaction rate to date – more than twice as fast as existing standards – while being less toxic and safer to handle.
Research Fellow Dr Gaurav Bhattacharjee, who worked on the project, said, “Our breakthrough can really be put into perspective when you consider that it takes millions and millions of years for gas hydrates to form in nature, yet with our correct addition of secret ingredients to the system in small quantities, the same process can be effected in the laboratory in a matter of minutes.”
Moreover, the end-product is very stable and can be stored at -5 degree Celsius and atmospheric pressure, similar to the conditions of a home freezer. This is impressive considering that the natural gas is reduced in volume by close to 90 times. Alternative ways to store natural gas include liquefying it at about -160 degree Celsius or compressing it to almost 250 times atmospheric pressure. These approaches do not work at a large scale because either they are expensive or not so safe to store for long periods.
Scaling up for industrial use
The NUS researchers are now aiming to convert larger volumes of gas into smaller volumes of solid at a pilot-scale of 100 kilogrammes per day. If successful, this will enable the commercial adoption of the solidified natural gas technology and create a solid that is stable to store at atmospheric pressure. They hope to eventually scale it up for industrial use.
Assoc Prof Linga said, “This is especially relevant to natural gas importing countries like Singapore, where 95 per cent of electricity is generated using natural gas. The development of such gas storage technologies would help enhance the country’s energy security.”
This research was funded in part under the Energy Innovation Research Programme (ERIP), which is administrated by the Energy Market Authority (EMA) and funded by the National Research Foundation (NRF).
Notably, Assoc Prof Linga’s work was highlighted in the recently released Research Fronts 2020, a joint report by Clarivate and the Chinese Academy of Sciences to identify the top 100 research fronts for the period 2014 to 2019. According to the report, Assoc Prof Linga and his team have published the top three papers with the highest citations in the research front related to gas hydrates for “research progress on gas hydrate accumulation and mining technology”. These papers focused on the latest progress in creating natural gas hydrates, both in the laboratory environment and in mining field experiments, the limitations of the state-of-art natural gas exploration methods, and the challenges of large-scale exploration.
The Latest Updates from Bing News & Google News
Go deeper with Bing News on:
Solidified natural gas pellets
- Arlington delegation joins Legislature in passing climate change billon January 12, 2021 at 7:26 am
The Massachusetts Legislature passed climate legislation to overhaul the state’s climate laws and make other changes.
- Some tips for heating a home with firewoodon January 12, 2021 at 6:17 am
During the 1800s, the burning of wood for home heat was a common occurrence throughout the United States. As wood for heat gradually gave way to coal during the early ...
- Post-Brexit UK – like other gas-producing nations – betting on uncommercial, unproven carbon capture and hydrogenon January 11, 2021 at 3:43 pm
The United Kingdom, the originator of the Industrial Revolution that kicked off climate change, is forging ahead with R&D projects to reduce the carbon impacts of dirty industries, with the central ...
- New Mexico governor supports tapping endowment for educationon January 11, 2021 at 2:46 pm
With the Legislature shifting to the left and the pandemic exacerbating educational inequities, New Mexico Democrats say they're on the cusp of finishing a decades-long ...
- St. Lawrence County lawmaker wants to reduce home heating costson January 7, 2021 at 1:22 pm
In St. Lawrence County you pay sales tax on wood pellets and on natural gas, fuel oil, and other home heating fuels. The new chairman of the county legislature thinks that should change. “I think home ...
Go deeper with Google Headlines on:
Solidified natural gas pellets
Go deeper with Bing News on:
Natural gas hydrate
- North America Offshore Pipeline Market Forecast to 2027 - COVID-19 Impact and Regional Analysis by Diameter, Line Type, and Producton January 12, 2021 at 3:33 am
Reportlinker.com announces the release of the report "North America Offshore Pipeline Market Forecast to 2027 - COVID-19 ...
- Gas Hydrates Market Driving Factors, Industry Analysis, Investment Feasibility and Trends, Outlook -2023on January 11, 2021 at 2:20 pm
Based on type, the global gas hydrates market has been segmented into onshore gas hydrates and offshore/ marine gas hydrates. The onshore gas hydrates segment account for the largest market share in ...
- Happy Cappy Introduces New Eczema Cream for Kids of All Ages!on January 5, 2021 at 7:01 am
Clinically tested to hydrate and protect skin all day without ... It is also made with natural ingredients like Licorice Root Extract to soothe redness and reinforce the protective skin barrier ...
- Optimizing dehydration unit critical to gas lifton January 3, 2021 at 4:01 pm
If not conditioned properly, the gas hydrates may form in any part of the lift gas where ... The most common process for dehydrating natural gas is to intermingle the gas with a hygroscopic liquid ...
- Hydrates may commercialize stranded gason January 3, 2021 at 4:01 pm
One solution is to transport it as natural gas hydrates (NGH). NGH technology has the potential in some cases to drive the cost of natural gas transport down to a level comparable to the cost of ...