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Lanka can use municipal solid waste to produce 10 tonnes of hydrogen daily – Engineering expert

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Eng. Ruwan Nagahawatte

By Rathindra Kuruwita

Hydrogen an important clean energy source of the future, Sri Lanka can produce 10 tonnes of it a day from municipal solid waste, Eng. Ruwan Nagahawatte, head of the mechanical engineering sectional committee of the Institution of Engineers Sri Lanka (IESL) said.

Nagahawatte said hydrogen is a clean alternative to methane, also known as natural gas. Hydrogen is the most abundant chemical element, estimated to contribute 75% of the mass of the universe. According to a 2023 McKinsey analysis, hydrogen could contribute to more than 20 percent of annual global emissions reductions by 2050.

As of mid-2023, over 1,000 large-scale hydrogen projects have been announced worldwide, totaling $320 billion in direct investments. In Europe alone, $117 billion has been invested in hydrogen projects so far. According to McKinsey, hydrogen is expected to play a crucial role in achieving decarbonization targets in the region.

Hydrogen can be produced from a variety of resources, such as natural gas, nuclear power, biogas and renewable power like solar and wind. The challenge is harnessing hydrogen as a gas on a large scale to fuel our homes and businesses, he said.

Hydrogen can also be produced through methane that can be generated by solid waste. Western province alone generates 300 tonnes of biodegradable municipal solid waste a day and this can be used to produce 7.2 tonnes of methane per day.

“This in turn can be used to produce two tonnes of hydrogen a day. We are talking about the western province alone. With efficient collection of biodegradable waste, Sri Lanka can produce 10 tonnes of hydrogen a day. Sri Lanka can generate over 3,000 tonnes of hydrogen per annum while providing a solution for municipal solid waste disposal. The project needs an investment of 11 million U.S. dollars but the annual revenue generation is expected to be 4.5 million dollars,” he said.

Eng. Nagahawatte, however, pointed out that there are some engineering challenges in the production of hydrogen. The production of hydrogen needs ultra-pure water, a high-grade water that’s free from impurities like microbes, minerals, and dissolved gases through high levels of purification.

“Generating this water is more difficult than producing hydrogen,” he said.

The Head of the Mechanical Engineering Sectional Committee added that hydrogen also needs to be stored below minus (-) 253 centigrade in insulated tanks to maintain this temperature and minimize evaporation. These temperatures are called cryogenic temperatures, i.e., the temperature at which molecular motion comes as close as theoretically possible to ceasing completely.

Eng. Nagahawatte added that hydrogen must be stored at high pressure (350-700 bars) but the technology is improving and that the cost of capital is decreasing rapidly, making it affordable.

“Despite all challenges, the world is very much enthusiastic about hydrogen. This is because of high value as well as environmental considerations. We can start small. We can actually start producing methane first and sell it to consumers. Methane is natural gas, the only difference between this and what we have in cylinders is that this is not liquefied,” he said.



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The Colombo Plan celebrates its 75th Anniversary

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The 75th Anniversary Celebration of the Colombo Plan was held on Friday 03 July at the Galle Face Hotel in Colombo under the patronage of Prime Minister Dr. Harini Amarasuriya.

Delivering the keynote address, the Prime Minister stated that the Colombo Plan was established 75 years ago at a time when many Asian nations were embarking on the path to independence while confronting challenges of post-war reconstruction and economic development.

She noted that it is a matter of great pride for Sri Lanka that the organization bears the name ​“Colombo” and that the country continues to serve as its host.

The Prime Minister further noted that, as Sri Lanka pursues digital transformation, sustainable transport systems, and resilient supply chains, the Colombo Plan’s early investments in the country’s energy, agriculture, irrigation, and transport sectors continue to form an important part of the nation’s development foundation.

The Prime Minister also highlighted the significant contribution of the Colombo Plan’s Drug Advisory Programme in addressing the global drug menace, which has a profound impact on youth, public health, and social stability. The Prime Minister emphasized that, under the leadership of the President, the Government of Sri Lanka has accorded high priority to combating the drug menace and expressed appreciation for the continued support extended by the Colombo Plan towards these efforts.

The Prime Minister further stated that today’s world is far more complex than it was in 1951, with rapid technological transformation, climate challenges, and evolving geopolitical dynamics. In this context, the Prime Minister stressed that regional organizations such as the Colombo Plan must continue to evolve, becoming more adaptive and responsive to contemporary challenges. The Prime Minister also underscored the importance of strengthening cooperation in education and human capital development, while fostering greater awareness among younger generations of the value of international cooperation.

During the ceremony, a special tribute was paid to Dr. Benjamin P. Reyes in recognition of his distinguished service as Secretary-General of the Colombo Plan over the past four years. The newly appointed Secretary-General, Chulamee Chartsuwan, was also welcomed.

To commemorate the 75th anniversary, a special commemorative postage stamp and the publication titled ​“Colombo Plan 75 Years – 75 Stories” were officially launched.

The event was attended by Deputy Minister of Foreign Affairs and Foreign Employment Arun Hemachandra, Ambassador of Vietnam to Sri Lanka and Chairperson of the Colombo Plan Council  Trinh Thi Tam, along with many distinguished guests.

 


Prime Minister’s Media Division

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Out-of-control dengue epidemic spreads across Sri Lanka

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Dengue hyper-epidemic not yet under control, PHI Union warns

The Public Health Inspectors’ (PHI) Union of Sri Lanka on Friday said the country’s dengue hyper-epidemic situation has still not been brought under control, warning of a fresh rise in cases amid changing weather conditions.

Acting President of the PHI Union Upul Rohana said that although the situation has shown some improvement in areas where outbreaks were first reported, new clusters of infection are now emerging in other parts of the country.

He urged the public to maintain, and not reduce, current dengue prevention activities under any circumstances.

Rohana noted that light showers had begun in several areas under prevailing weather conditions, increasing the risk of mosquito breeding as vector density is already high.

He also identified unoccupied properties as a major challenge in dengue control, pointing out that houses belonging to persons working abroad, as well as newly purchased but uninhabited properties in urban areas, were contributing significantly to mosquito breeding sites.

Meanwhile, the National Dengue Control Unit (NDCU) said on Friday that dengue cases reported so far this year have exceeded 57,000, with 57,668 infections and 35 deaths recorded countrywide.

The NDCU said 1,253 new cases were reported within the past 24 hours alone.District-wise, Colombo has recorded 11,811 cases so far this year, while Gampaha has reported 11,443 cases, making them the two most affected districts.

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Yoshitha loses appeal in ‘Menik Malla’ case

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The Court of Appeal on Friday dismissed a revision application filed by Yoshitha Rajapaksa in connection with the money laundering case popularly known as the “Menik Malla” case.

The application challenged a ruling of the Colombo High Court, which had earlier rejected a preliminary objection raised by the defence during trial proceedings.

The judgment was delivered by a bench comprising Justices Amal Ranaraja and Sumudu Premachandra.

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