Contaminated Plastic Pellets Wash Ashore on Sri Lanka Beaches
Authorities in Sri Lanka say they have largely contained a fire on board a cargo ship off the island’s west coast, but now face the task of cleaning up the tons of plastic granules it was carrying that have washed up along a wide swath of the coast.
Compounding the scale of the environmental hazard is the possibility that the pellets, known as nurdles, are contaminated with chemicals from the ship, the Singapore-flagged X-Press Pearl.
The ship, newly commissioned in March this year, caught fire on May 21 shortly after leaving western India bound for Singapore. The fire broke out as it was anchored off Colombo, awaiting permission to unload Sri Lanka-bound cargo, but was brought under significant control by May 30 with help from India, authorities said.
Darshani Lahandapura, chair of Sri Lanka’s Marine Environment Protection Authority (MEPA), told Mongabay that while it was too soon to pin down the cause of the fire, “we believe it was due to a chemical reaction due to leakage of nitric acid.” The ship was carrying 25 metric tons of nitric acid (HNO3), generally used in manufacturing fertilizers as well as explosives. The ship was also carrying three containers of plastic pellets, each weighing 26 metric tons; some of the 25-kilogram (55-pound) bags from the containers fell overboard, and the beads have now carpeted beaches all the way down to the south coast of Sri Lanka.
“We swiftly mobilized our staff and together with military personnel to start removing nurdles from long expanses of our western coast,” Lahandapura told Mongabay. “Particular instructions were given to prevent pellets from getting washed back to the sea as that could make cleaning operations much harder.” She added that the recovered nurdles would be dumped in the MEPA’s hazardous waste yard until they are analyzed and the legal process is concluded, after which the nurdles will be destroyed.
Authorities have also warned people not to touch the plastic pellets, which may be contaminated with chemicals as beaches are awash with black-coated tiny plastic pellets.
Nurdles are the raw material used in creating other plastic items. They’re also a chief source of the microplastic pollution in the oceans. Due to their small, round shape, they’re often mistaken for food by marine species, which either die from ingesting the pellets, or pass the plastic up the food chain. Nurdles can also absorb other chemicals over time, and once swallowed, can contaminate the food chain with high concentrations of these chemicals. In Sri Lanka, where fish is the main source of protein, this problem poses an immediate health concern for humans.
The MEPA has set up an expert committee comprising officials from various government agencies and experts to assess the damage. Authorities have already banned fishing in affected areas, and while no mass deaths of marine species have been recorded so far, the National Aquatic Resources Research and Development Agency (NARA) has taken samples of dead fish and turtles found along the western coast for study.
The collection and cleanup of the grain-sized pellets will prove a serious challenge, said Muditha Katuwawala, coordinator of the Pearl Protectors, a local NGO focusing on Sri Lanka’s marine environment.
The group regularly sends out volunteers to clean beaches and address environmental impacts caused by oil spills and other pollutants. But it hasn’t been able to mobilize a similar response to the X-Press Pearl nurdle spill because of a strict nationwide lockdown in effect across Sri Lanka to deal with the latest wave of COVID-19 infections.
“We foresee that the cleaning process will be a lengthy operation, so we started creating tools that can assist the cleaning operations and to create awareness around beach pollution of such magnitude,” Katuwawala told Mongabay.
‘SAD AND FRUSTRATING’
With the onset of the southwestern monsoons, the western seas off Sri Lanka are rough at the moment, which means the nurdles can quickly be distributed across a much larger area, said Charitha Pattiaratchi, a professor of coastal oceanography at the University of Western Australia who studies wave patterns around Sri Lanka. The currents are shifting south, which means more accumulation of debris toward Colombo and other areas along the southern coastline can be expected, Pattiaratchi told Mongabay.
A similar accident in 2012 in Hong Kong resulted in container-loads of plastic pellets washing out to sea. Analyzing the 2012 images, Gary Stokes, director of operations at Oceans Asia, says the Sri Lankan situation is similar to the Hong Kong incident.
“It took about 7000 volunteers to clean up Hong Kong beaches, but our pellets were not contaminated with chemicals and there were no COVID-19 restricting gathering of the people,” Stokes told Mongabay, adding that the situation would be more challenging in Sri Lanka.
After the Hong Kong spill, Oceans Asia lobbied for the introduction of more robust material to pack the plastic pellets, as the 25-kilo poly sacks currently used are easily torn, even in minor incidents. Stokes said metal containers would be more durable and able to withstand a fire.
“It is both sad and frustrating that the manufacturing companies haven’t heeded this warning, creating the space for similar disasters to happen,” Stokes said.
INCREASE IN MARITIME ACCIDENTS
Sri Lanka sits along a busy international shipping lane, which makes it critically important that the country is prepared for contingencies like the X-Press Pearl fire, said Dan Malika Gunasekera, a maritime lawyer and scholar with the International Max Planck Research School for Maritime Affairs. He said the country has an obligation to provide assistance to any ship in distress, so it’s important that Sri Lanka strengthens the Indian Ocean Memorandum of Understanding on Port State Control to ensure quicker actions.
In a recent report of maritime incidents in Sri Lankan waters since 1994, the Pearl Protectors identified 20 major incidents. More than half of them occurred in the last five years, indicating an increase in maritime activities around the island. Of the 20 major incidents, 12 involved an oil spill of some sort, underscoring Sri Lanka’s vulnerability to extensive marine pollution.
In September last year, the MV New Diamond, carrying 270,000 tons of crude oil, caught fire off eastern Sri Lanka. A joint fire-fighting operation by the Sri Lankan and Indian navies managed to put out the fire and limit the scale of the disaster. Sri Lanka lodged a claim of $2.3 million in damages, which the ship’s owner paid in full.
This story was originally published in Mongabay on May 31, 2021. NowThis has published this story with permission.