Scientists pioneer novel model to turn sunlight into fuel
London, Sep 4 : In a breakthrough move, British scientists have used natural sunlight to convert water into hydrogen and oxygen by mixing biological components and man-made technologies.
The team led by academics at the University of Cambridge, used semi-artificial photosynthesis to explore new ways to produce and store solar energy, a finding that could now be used to revolutionise the systems used for renewable energy production.
Their method also managed to absorb more solar light than natural photosynthesis.
"Natural photosynthesis is not efficient because it has evolved merely to survive so it makes the bare minimum amount of energy needed -- around 1-2 per cent of what it could potentially convert and store," said lead author Katarzyna Soko, doctoral student at the University's St. John's College.
Artificial photosynthesis has been around for decades but it has not yet been successfully used to create renewable energy because it relies on the use of catalysts, which are often expensive and toxic. This means it cannot yet be used to scale up findings to an industrial level.
The new model, detailed in the journal Nature Energy, is the first to successfully use hydrogenase and photosystem II to create semi-artificial photosynthesis driven purely by solar power.
The team not only improved on the amount of energy produced and stored, they managed to reactivate a process in the algae that has been dormant for millennia.
"Hydrogenase is an enzyme present in algae that is capable of reducing protons into hydrogen. During evolution this process has been deactivated because it wasn't necessary for survival but we successfully managed to bypass the inactivity to achieve the reaction we wanted -- splitting water into hydrogen and oxygen," Soko explained.
Soko hopes the findings will enable new innovative model systems for solar energy conversion to be developed.
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Karnataka Assembly passes bill on Palace Grounds amid opposition protest
Bengaluru, Mar 6 (PTI): The Karnataka Assembly on Thursday passed the Bangalore Palace (Utilisation and Regulation of Land) Bill, reaffirming state ownership over 472 acres and 16 guntas of land here, amid protests by the opposition BJP.
During the discussion, Karnataka Law and Parliamentary Affairs Minister H K Patil said the state government would have to provide Rs 200 crore worth of Transfer of Development Rights (TDR) for each acre of land, which means that for 15 acres, Rs 3,000 crore worth of TDR would be issued.
“If we accept it, then this 2-km stretch of road will become the costliest road in the world. If we accept it then how are we going to develop the city in later stages? How will you carry out development works?” asked Patil.
He also pointed out that this question was raised not only under the Congress government but also during the previous BJP regime.
However, the BJP-led cabinet has opposed the project.
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“Suppose we agree to it then, what will be the valuation of the 472 acres? It will be lakhs and lakhs of crores of rupees. Can we accept?” Patil wondered.
The Minister said the government had previously exercised its executive powers to issue an ordinance, which was approved by the Governor. Now the government is bringing a bill with two amendments.
“In this bill, we have made provisions either to develop or drop the road development work,” Patil explained.
However, BJP state president B Y Vijayendra and BJP MLA Arvind Bellad opposed the move, alleging that the government was targetting Yaduveer Krishna Datta Chamaraja Wadiyar, the scion of the Mysuru royal family, and the BJP MP from Mysuru-Kodagu constituency out of political vendetta.
“We talk of 472 acres of Mysuru Maharaja but here there are many Maharajas who too own 400 acres, 500 acres and thousands of acres of land, which is known to everyone,” Bellad said.
He slammed the Congress government, saying political power should not be misused for personal vendetta.
“Why (the then Deputy Chief Minister) Siddaramaiah brought the law in 1996 pertaining to the Bangalore Palace? Why are you setting eyes on the Bangalore Palace?” he asked.
Vijayendra charged that Wadiyar won the election on BJP ticket so the state government realised that it should acquire it.
“This bill has been brought for political vengeance. We are not discussing whether Rs 3,000 crore is exorbitant or not but the moment Yaduveer became MP, the state government woke up. You should be ashamed. This house should not be used for political vendetta,” he said.
Intervening, Minister Priyank Kharge said Vijayendra should not have raised it because the intention behind building the road was noble.
According to him, the BJP too had the same plan when it was in power.
He sought to know whether thousands of crores of rupees be spent on a road which should have cost significantly less.
In response, BJP MLA B A Basavaraj (Byrathi) said issuing TDR will not be a burden on the state government and appealed to the ruling Congress to reconsider its stance.
Minister Ramalinga Reddy too explained that the Karnataka government acquired the entire land way back in 1996.
The Mysuru royal family went to the High Court, which gave ruling in favour of the state government. The royal family then approached the Supreme Court, where the case is still going on, the Minister pointed out.
“The final judgment is pending in the SC to decide whether the acquisition was right or wrong. If the SC says it’s the royal family’s property then let it be so. If the order is in the state government’s favour then we can take a decision. The bill is only about it,” Reddy explained.
Speaker U T Khader then called for a voice vote and the bill was passed by the Assembly amidst opposition BJP’s discontent.
