how they're fighting the oil spill - oil spill absorbent materials
Oil whirlpool in the Gulf of Mexico-
Broken by dispersion, stirred by wind and water
The United States has become an elusive giant and is increasingly difficult to clean up, but if it reaches the shore, it will pose a smaller, more scattered threat. S.
Coast Guard commander Adm
Alan said Friday.
Alan, President Obama's top commander in charge of the oil spill, said: "The oil spill is changing its nature . ".
"I no longer believe we have a massive overall leak.
He said about 60-mile-long, 100-mile-
The wide oil slide is divided into several pieces of oil with water in the middle.
"There is good news and bad news," Allen said . ".
"The bad news is that oil is very widely distributed and it is difficult to manage the surrounding areas.
But on the other hand, if there is a shore effect, it will go ashore in a smaller amount, which is basically a subset of possible larger leaks.
"Given the changing nature of 3-week-
The old Leak, who is working to evaluate the clean-up strategy, answers the question more accurately: "What have we done between burning, mechanical skimming, and decentralized applications? " Allen said.
On Friday, the oil slick bypassed the coast of the state of Luis Anna and the Chandel islands.
Thunderstorms and strong winds are expected to hinder the clean-up work this weekend.
So far, scientists have expressed different views on the adequacy of the work.
"Overall, the clean-up work will certainly be different, although the exact extent of oil recovery is difficult to quantify," said Julie julius lanlinnai, an honorary retired professor of petroleum engineering at Luanna State University.
"In addition, a large part of the oil is evaporation.
"It's not like the Exxon Valdez disaster in Alaska, where the water is cold and the spilled oil is heavy," he said . ".
"The water here is warm and the type of oil is light.
As it evaporates, its heavier parts fall to the bottom of the ocean like asphalt.
"On December, Dolan, the oil spill consultant who worked for Exxon in the 1989 Exxon Valdez oil spill, was not optimistic.
Oil may have bottomed out, he said.
Even when the weather is good, most of the oil on the top can avoid some boom and the oil.
"If you can accommodate and recycle 20% of this oil, you will achieve the maximum efficiency of the boom and the oil purifier," Doran said . " Doran has handled more than 2,000 leaks.
However, some experts say at this point that the clean-up work is almost futile.
"You can have the best plans in the world, but no matter how hard you work, most toxic shocks will happen," Rick Steiner said . " A marine protection consultant in Alaska is working on an emergency response to the Exxon Valdez spill.
As the response team in the Gulf region is in a state of war, about 500 more ships have already exceeded 3.
6 million gallons of oil.
More than 200 miles of boom has been deployed, spraying about 517,000 gallons of dispersing agent from military cargo planes.
About 378,000 gallons of oil are stored and burned at sea.
The cleaning personnel attacked the oil slick with various weapons: fire, oil purifier, cleaner, boom, sponge and sandbag: Fire: The most effective way to destroy the spilled oil is to control the combustion.
Basically, the strategy uses special U-
The shape towed by the vessel is "Fire Bar", encircling a portion of the oil and transferring it to a safe burning place.
But the rising wind and 4-
Swollen feet make it difficult to control burns.
According to BP spokesman Rebecca Bernhard, authorities have only conducted five times since April 20.
Oiler: these are containers that use a variety of methods to sweep the oil off the surface, including a "conveyor belt" that absorbs water, ropes that attract oil and reject water, and giant spools that rotate the disc.
Like burning, windy and choppy waters limit skimming.
Oily water collected from the oil purifier is squeezed out from the collection device and flows into the tanker.
Oil is refined and processed into fuel, but about 90% of the material transported by the ship is water.
Dispersing agent: Detergent-
Just like the oil dispersing agent dropped on the plane, help to break down the floating oil into droplets and make it degrade faster.
BP said it had carried out 192 missions as of Friday, covering more than 250 acres per mission.
Elsewhere, the dispersing agent has been used for smaller spills, but has never been so serious in the United States. S.
The federal authorities say the waters.
Environmental activists are concerned that releasing such a large number of fish into the bay could have a toxic effect, as the Bay has important breeding sites for fish, including bluefin tuna.
But federal officials believe the dispersion agent is much less toxic than oil and is considered a necessary trade-off to protect the coastal environment.
On Friday, federal regulators approved an experimental plan to inject chemical cleaners into the oil spewing from an underwater 5,000 feet wellhead.
• Boom and sponge: on their own ship, the locally hired crew is putting the sponge down --
Just like putting the material in the water and soaking the oil up.
The sponge is packed in garbage bags and then returned to land.
But this method is slow.
Fishermen and others are also trying to lay hard boom rings made of durable PVC material to prevent oil from Flushing on shore.
But because the oil is sprayed with a dispersing agent, it is mixed with water and can drift under the boom.
Big waves and strong winds also hit the boom under water or rushed them ashore.
Built a fence on the beach
The size of the oil ball washed off by the parish of prakming, Los Angeles. , on Wednesday.
Local governments complain about the lack of economic prosperity;
BP ordered materials from far away Brazil, Norway and Alaska.
Sandbags: in order to make up for the shortage of prosperity, the parish of lovelash in the state of Luis Anna, in cooperation with the National Guard, has reduced more than 200 sandbags
The beaches are eroded and rivulets extend inland to tons of sandbags in coastal areas.
But the big waves and tides knocked the sandbags over, leaving the sandbags dead.
Sandbags were abandoned Thursday.
Time and nature are also influencing the behavior of oil, which scientists say is driven and pulled by water flow and dissipated by evaporation.
"The more severe the weathering, the more broken the oil, the more likely the impact on the coast is to be dispersed," said Doug Helton, National Oceanic and Atmospheric Administration accident action coordinator.
"The smaller the oil block, the more biodegradable it will be.
"Eric Trier, director of the Center for Coastal Observation research and development at the Scripps Marine Research Institute, who helped track the leak, said it did not grow like a large, swollen cloud.
On the contrary, it is carried under the surface, and it is difficult to absorb and recover oil when it spreads in water.
Trier said he is confident that oil will enter the circulation, a strong flow that will take oil to the Florida Keys and the East Coast.
"It's just a matter of time," he said . "raja.
Abdulrahim @ latimes. com alana. Semuels @ latimes. com louis. Sahagon @ latimes.