International
Chilean scientist plans to clean up mining with ‘metal eating’ bacteria
AFP
Starving microorganisms capable of surviving in extreme conditions have already managed to “eat” a nail in just three days.
In Chile, a scientist is testing “metal-eating” bacteria she hopes could help clean up the country’s highly-polluting mining industry.
In her laboratory in Antofagasta, an industrial town 1,100-kilometers north of Santiago, 33-year-old biotechnologist Nadac Reales has been carrying out tests with extremophiles — organisms that live in extreme environments.
Reales came up with her idea while still at university as she was conducting tests at a mining plant using microorganisms to improve the extraction of copper.
“I realized there were various needs in the mining industry, for example what happened with the metallic waste,” she told AFP.
Some metals can be recycled in smelting plants but others, such as HGV truck hoppers that can hold 50 tons of rock, cannot and are often discarded in Chile’s Atacama desert, home to the majority of the country’s mining industry.
Chile is the world’s largest producer of copper, which accounts for up to 15 percent of the country’s GDP, resulting in a lot of mining waste that pollutes the environment.
In her research, Reales, who now runs her own company Rudanac Biotec, concentrated on iron-oxidizing bacteria called Leptospirillum.
She extracted the bacteria from the Tatio geysers located 4,200 meters above sea level, some 350 kilometers from Antofagasta.
The bacteria “live in an acidic environment that is practically unaffected by relatively high concentrations of most metals,” she said.
“At first the bacteria took two months to disintegrate a nail.”
But when starved, they had to adapt and find a way of feeding themselves.
After two years of trials, the result was a marked increase in the speed at which the bacteria “ate,” devouring a nail in just three days.
– Surprising benefit –
Reales says “chemical and microbiological tests” have proved the bacteria are not harmful to humans or the environment.
“We’ve always seen a lot of potential in this project that has already passed an important test in the laboratory,” said Drina Vejar, a microbiologist who is part of a four-person team working with Reales.
“It’s really necessary at this time when we have to plan for a more sustainable development, especially in all these cities with so many polluting industries.”
Mining companies have shown interest in the research but while Rudanac Biotec previously benefitted from a state fund for start-ups, the company needs investment to move on to its next stage of trials.
Reales says she needs money to see if her method will “eat a medium sized beam or a hopper.”
When the disintegration process is complete, what remains is a reddish liquid residue, a solution known as a lixiviant that itself possesses a surprising quality.
“After biodisintegration the product generated (the liquid) can improve the recovery of copper in a process called hydrometallurgy,” said Reales.
Essentially, the liquid residue can be used to extract copper from rock in a more sustainable manner than the current use of chemicals in leaching.
Reales says it means green mining is “totally feasible.”
That is of great interest to mining companies that could use it to improve their large scale extraction of copper or other minerals, while also reducing their pollution, something they are required to do by law.
Reales recently submitted a request for an international patent for her technology, but more importantly she hopes it will help reduce metal waste blotting the landscape in the mining regions of her country.
International
Claudia Sheinbaum: Operation Against ‘El Mencho’ Was Based on Pending Arrest Warrants
Mexico’s President Claudia Sheinbaum on Wednesday rejected claims that the military operation that resulted in the death of Nemesio Oseguera Cervantes, known as “El Mencho,” leader of the Jalisco New Generation Cartel (CJNG), was carried out under pressure from the United States government.
Sheinbaum explained that the deployment of federal forces was aimed at executing outstanding arrest warrants against Oseguera Cervantes, who was considered one of the most wanted criminals in both Mexico and the United States.
“That was not the objective (to ease pressure from the United States). It is very important, and I want to repeat it. This individual had an arrest warrant, or several,” Sheinbaum said, referring to the operation conducted on February 22.
According to the president, the initial goal was to capture Oseguera Cervantes, but military forces responded after coming under attack during the intervention.
“The operation was to detain him. The problem is that they were attacked — the Secretariat of National Defense — and they responded at that moment,” she said.
The president insisted that the action was not carried out in response to external demands, although she acknowledged intelligence cooperation with the United States.
“It was not done in any way because of pressure from the United States, not at all. Of course, there was intelligence information from the United States that was used specifically,” she concluded.
International
Spain Denies Any Agreement to Cooperate with U.S. Military in Iran Operations
Spain’s Foreign Minister José Manuel Albares on Wednesday firmly denied that Madrid has agreed to cooperate with the U.S. military in operations against Iran, contradicting statements made minutes earlier by White House Press Secretary Karoline Leavitt.
“I categorically deny it,” Albares said in a radio interview cited by EFE. “The position of the Spanish government regarding the war in the Middle East, the bombings in Iran, and the use of our bases has not changed by a single comma.”
Earlier in the day, Leavitt told reporters that Spain had “agreed to cooperate with the United States military in recent hours,” following President Donald Trump’s threat to impose a trade embargo on Madrid. Trump had warned of economic measures after Spain reportedly refused to allow the Pentagon to use facilities at Spanish bases for operations related to Iran.
“I have no idea what that could be referring to or where it could be coming from,” Albares said, insisting that Spain’s position “has not changed at all” and therefore “remains absolutely unchanged.” He added that he had “no desire” and “almost no time” to speculate about the White House spokesperson’s remarks.
Albares reiterated Spain’s “No to war” stance, which he said had been clearly and forcefully expressed by Prime Minister Pedro Sánchez in an institutional address. According to the foreign minister, that position has been supported by “many European colleagues.”
International
White House Says Spain Agrees to Cooperate with U.S. Military After Trump Threatens Trade Embargo
White House Press Secretary Karoline Leavitt said Wednesday that Spain has agreed “in recent hours” to cooperate with the U.S. military, following President Donald Trump’s threat to impose a trade embargo on Madrid.
Trump had warned of potential commercial measures after Spain reportedly refused to allow the Pentagon to use facilities at Spanish military bases for operations related to Iran.
“With respect to Spain, I think you heard the president’s message yesterday loud and clear, and I understand that in recent hours they have agreed to cooperate with the United States military,” Leavitt said during a press briefing.
She added that the U.S. military is currently coordinating with its counterparts in Spain. However, the president expects broader support.
“The president expects that all of Europe, all of our European allies, of course, will cooperate in this important mission — not only for the United States, but also for Europe,” Leavitt said.
Her remarks came in response to questions about Spain’s position and its role as a U.S. ally amid rising tensions surrounding operations involving Iran.
Claudia Sheinbaum: Operation Against ‘El Mencho’ Was Based on Pending Arrest Warrants
Nicaragua Held Responsible for Harassment of Opposition Prosecutor and His Family
Spain Denies Any Agreement to Cooperate with U.S. Military in Iran Operations
Tec de Monterrey honors one of its students for his contribution to nanotechnology in medicine
Defense Minister commends salvadoran soldier for Central American Cross Country victory
Extension of the state of emergency approved in southern Chile
-
International4 days agoIran Reports 201 Dead, 747 Injured After U.S. and Israeli Strikes
-
International2 days agoBrazil’s Supreme Court Rejects Bolsonaro’s Bid for House Arrest
-
International4 days agoPope Leo XIV Urges End to ‘Spiral of Violence’ in Middle East
-
International4 days agoSecurity Council to Hold Emergency Meeting on Middle East Crisis
-
Sin categoría4 days agoTrump: ‘We Think It’s True’ Amid Claims Iran’s Supreme Leader Was Killed
-
International2 days agoAnti-ICE Billboard Campaign Targets Immigration Spending in 31 U.S. Cities
-
International1 day agoSpain’s Prime Minister to Address Nation Amid Trump’s Trade Threats
-
International2 days agoTrump Warns of ‘Major Wave’ of Attacks as Iran Conflict Escalates
-
International2 days agoMexico Calls for Immediate Probe After National Dies in ICE Custody
-
International2 days agoBolivia Orders Three Investigations Into Deadly Military Plane Crash
-
International1 day agoNew York Announces First 2,000 Seats in Universal 2-K Program
-
Central America2 days agoPanama Canal Monitoring Trade as Middle East Conflict Disrupts Shipping
-
International9 hours ago
White House Says Spain Agrees to Cooperate with U.S. Military After Trump Threatens Trade Embargo
-
International9 hours ago
Spain Denies Any Agreement to Cooperate with U.S. Military in Iran Operations
-
Central America1 day agoGuatemala’s Attorney General Fails in Bid for Top Court Seat Amid Corruption Allegations
-
International1 day agoWarner Bros. Developing First ‘Game of Thrones’ Movie With ‘Andor’ Writer
-
Central America9 hours agoNicaragua Held Responsible for Harassment of Opposition Prosecutor and His Family
-
International9 hours agoClaudia Sheinbaum: Operation Against ‘El Mencho’ Was Based on Pending Arrest Warrants