Sydney — Australian researchers have built an electrical generator that consumes carbon dioxide, generates electricity and admits no exhausts. They say the technology could create a new industrial-scale carbon capture method.
Scientists say too much carbon dioxide, or CO2, in the atmosphere is main driver of warming temperatures.
Researchers at the University of Queensland have created a generator that consumes carbon dioxide and produces electricity.
The carbon-negative “nano-generator” has been built by the university’s Dow Centre for Sustainable Engineering Innovation.
The prototype device uses what is known as a poly amine gel to absorb carbon dioxide to create an electrical current.
The design team acknowledges the technology needs further development and refinement but believes it could help to significantly curb global CO2 emissions.
Zhuyuan Wang from the University of Queensland told the Australian Broadcasting Corp. the concept has great potential.
“We actually just finished the proof of concept that proves this can work but the current power density and efficiency is not high enough to compete with other energy sources, like solar panel[s], like the wind turbine,” he said.
The Queensland researchers hope their prototype could have industrial applications to help, for example, power plants reduce their emissions, as well as smaller units for use at home.
Carbon capture and storage techniques are used by the oil and gas sector to try to offset its emissions of greenhouse gases. Current methods involve harnessing CO2 produced by power companies, for example, and then burying it deep underground where it becomes trapped in rock formations. There are several large-scale CO2 burial sites in the United States.
However, the Climate Council, an Australian advocacy organization, claims that carbon capture and storage technology “has not been trialled and tested – anywhere in the world – at the scale required to tackle the climate crisis.”
Australia’s national science agency, the Commonwealth Scientific and Industrial Organisation, states that “emissions of CO2 from fossil fuels make the largest contribution to climate change.”
Australia is the world's 14th highest emitter, contributing just over 1% of global emissions. It has, however, some of the world’s highest per capita emissions. Coal and gas generate much of Australia’s electricity, but solar and wind are leading an energy transformation.
The Climate Council states that almost a third of Australia’s energy is renewable and will soon reach 50%.
