Ick-factor: London fatberg goes from sewer to museum

LONDON — London's newest museum attraction is greasy, smelly — and a glimpse at the hidden underside of urban life.

The Museum of London on Thursday unveiled its latest display, a chunk of a 130-metric-ton (143-U.S.-ton) fatberg that but was blasted out of a city sewer last year.

It took sewage workers with jet hoses nine weeks to dislodge the 250-meter (820-foot) -long mass of oil, fat, diapers and baby wipes from beneath Whitechapel in the city's East End.

The museum has lovingly preserved a chunk the size of a shoe-box, whose mottled consistency a curator likens to parmesan crossed with moon rock. Close examination reveals the presence of tiny flies. Three nested transparent boxes protect visitors from potentially deadly bacteria, and from the fatberg's noxious smell.

Curator Vyki Sparkes says the lump started out smelling like a used diaper "that maybe you'd forgotten about and found a few weeks later." The pong has now mellowed to "damp Victorian basement."

"It's disgusting and fascinating," she said of the fatberg. "And that's what's been great to work with — it has this impact on people."

The museum is so confident of the item's ick-appeal that the exhibition — titled Fatberg! with an exclamation point — comes with a selection of merchandise including T-shirts and fatberg fudge.

Sparkes considers the fatberg a natural for the museum, which charts the city's ancient and modern history. The word itself, a hybrid of "fat" and "iceberg," is one of London's gifts to the world: It was coined by the city's sewer workers and entered the Oxford English Dictionary in 2015.

Fatbergs are a growing menace for cities around the world, but they remain mysterious.

"Fatbergs aren't really that well understood — how they form, how quickly they form and what they are," said Sparkes.

She said museum curators struggled to figure out how to preserve their volatile sample of the mass of detritus mixed with cooking fat, palm oil and oils found in products like hair conditioner and body lotion.

They debated pickling, but "decided no, it would probably dissolve and turn into toxic sludge." Freezing was also rejected. In the end, the sample was air dried. The first chunk to undergo the process crumbled, but a second attempt succeeded.

The exhibition is a sobering look at the effects of daily waste, but it does contain some good news. Most of the Whitechapel fatberg was delivered to Argent Energy, a company that turns waste into biofuel. Some of the sludge that once choked the sewer system is now fueling London's red double-decker buses.

"There is an upside," said Argent spokesman Dickon Posnett. "(But) it would be nicer for us if we could collect the fat before it even goes into the sewers. It would be nicer for the people of London, as well. So there is a way to go."

The fatberg is on display from Friday until July 1. Admission is free.

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Follow Jill Lawless on Twitter at http://Twitter.com/JillLawless

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