Gallery: China’s Largest Algae Bloom Covers the Coast of Qingdao in Tho...

Image ©eutrophication&hypoxia

The coast of Qingdao, China is usually known for its beaches – but recently the nation's largest algae bloom blanketed the shores with thousands of tons of sea lettuce. A bloom the size of Connecticut has invaded the Yellow Sea surrounding the coastal town, suffocating its waters with layer upon layer of green algae. The sea lettuce may be harmless to humans, but it poses a danger to the marine ecosystem as it spreads and eventually begins to rot, emitting hydrogen sulphide into the water.

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  1. Grant Simpson July 9, 2013 at 11:37 pm

    H Mike and others interested, harvesting the algae requires being set up with barges and nets and or conveyors and a rotary drying drum on board. It could be done with big ramp trawlers hauling up net loads of it, some of them can pull 100tons of fish in at a time, so how about algae, in a purse seine style of netting perhaps then have a bob cat loading a conveyor on the deck that puts it on to a barge with a rotary sieve and drying drum installed along side the trawler, then it could be hauled off on other barges to be processed in to bio oil, animal feed or even fertilizer pellets. Some could be made in to bio oil on the barge to fuel the machinery and winches. It’s a risk some people have to take to set up for this the season before it occurs and it may only last a couple of months so would have to be around the clock operation to make it worth while for their investment. I know bulk Palm kernal animal feed sells for about US$250 dollars a ton here in Zealand. Surely this Ulva Prolifera Algae is worth more than that for its nutritional value? Here are some people doing Bio Oil Conversion of this algae.

  2. Mike Schroder July 6, 2013 at 11:18 am

    where are the algae harvesting companies that could be collecting this for free? Its a huge feedtock for continuous hydrous pyrolysis for oil and gas energy at the least.

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