"A black mound of Canadian oil waste is rising over Detroit."

NYT: “Assumption Park gives residents of this city lovely views of the Ambassador Bridge and the Detroit skyline. Lately they’ve been treated to another sight: a three-story pile of petroleum coke covering an entire city block on the other side of the Detroit River.
“Brian Masse, a member of the Canadian Parliament, wants a bilateral agency to investigate the pile accumulating in Detroit.
Detroit’s ever-growing black mountain is the unloved, unwanted and long overlooked byproduct of Canada’s oil sands boom.
And no one knows quite what to do about it, except Koch Carbon, which owns it.
The company is controlled by Charles and David Koch, wealthy industrialists who back a number of conservative and libertarian causes including activist groups that challenge the science behind climate change. The company sells the high-sulfur, high-carbon waste, usually overseas, where it is burned as fuel.
The coke comes from a refinery alongside the river owned by Marathon Petroleum, which has been there since 1930. But it began refining exports from the Canadian oil sands — and producing the waste that is sold to Koch — only in November.
“What is really, really disturbing to me is how some companies treat the city of Detroit as a dumping ground,” said Rashida Tlaib, the Michigan state representative for that part of Detroit. “Nobody knew this was going to happen.” Almost 56 percent of Canada’s oil production is from the petroleum-soaked oil sands of northern Alberta, some 2,000 miles away.
An initial refining process known as coking, which releases the oil from the tarlike bitumen in the oil sands, also leaves the petroleum coke, of which Canada has 79.8 million tons stockpiled. Some is dumped in open-pit oil sands mines and tailing ponds in Alberta. Much is just piled up there.
Detroit’s pile will not be the only one. Canada’s efforts to sell more products derived from oil sands to the United States, which include transporting it through the proposedKeystone XL pipeline, have pulled more coking south to American refineries, creating more waste product here.
Marathon Petroleum’s plant in Detroit processes 28,000 barrels a day of the oil sands bitumen.
….Coke, which is mainly carbon, is an essential ingredient in steelmaking as well as producing the electrical anodes used to make aluminum.
While there is high demand from both those industries, the small grains and high sulfur content of this petroleum coke make it largely unusable for those purposes, said Kerry Satterthwaite, a petroleum coke analyst at Roskill Information Services, a commodities analysis company based in London.
“It is worse than a byproduct,” Ms. Satterthwaite said.“It’s a waste byproduct that is costly and inconvenient to store, but effectively costs nothing to produce.”
Murray Gray, the scientific director for the Center for Oil Sands Innovation at the University of Alberta, said that about two years ago, Alberta backed away from plans to use the petroleum coke as a fuel source, partly over concerns about greenhouse-gas emissions. Some of it is burned there, however, to power coking plants.
The Keystone XL pipeline will provide Gulf Coast refineries with a steady supply of diluted bitumen from the oil sands. The plants on the coast, like the coking refineries concentrated in California to deal with that state’s heavy crude oil, are positioned to ship the waste to China or Mexico, where it is burned as a fuel. California exports about 128,000 barrels of petroleum coke a day, mainly to China.
And what about the leftover coke? The Environmental Protection Agency will no longer allow any new licenses permitting the burning of petroleum coke in the United States. But D. Mark Routt, a staff energy consultant at KBC Advanced Technologies in Houston, said that overseas companies saw it as a cheap alternative to low-grade coal. In China, it is used to generate electricity, adding to that country’s air-quality problems. There is also strong demand from India and Latin America for American petroleum coke, where it mainly fuels cement-making kilns.”