Saturday, August 24

Green energy solution from the mix of sea and soft drinks

Green energy solution from the mix of sea and soft drinks

From cheap, easy-to-earn materials are sea water and mixed fresh water can create new batteries of high durability.

Scientists published an article, published on the website of the American Chemical Society ACS Omega, describing new electric batteries with the proposal to use this energy source for coastal wastewater treatment plants.

Green Energy is a tremendous and unprecedented source of renewable energy, co-author of Research, Mr. Kristian Dubrawski, PhD in civil engineering and environmental technology at Stanford said: “Our electric batteries are an important step toward collecting the To gather this energy, without the need for osmotic membranes, moving parts or energy sources. “

Dubrawski conducts research in the laboratory of co-author Craig Criddle, professor of civil engineering and the environment, renowned for its interdisciplinary projects on energy-saving technologies. The idea of developing a type of battery tapping uses the salinity of sea salts derived from the Yi Cui Research co-author, professor of materials science and engineering and Mauro Pasta, PhD in materials science and engineering during the research process.

When fresh water from the coastal sewage treatment plants is discharged to the salty sea water, an electrochemical reaction causes energy to be born. This energy can be used, to charge the battery reserve power and reuse it for the plant.

Researchers have experimented with a battery prototype, monitoring the energy production process of the electric kettle while continuously draining hourly wastewater from the water quality control plant Palo Alto, mixed into seawater from Half Moon Bay. In 180 water discharge, the battery material maintains 97% efficiency in collecting the energy from the salinity of seawater.

This technology is able to operate wherever there is fresh water and saltwater interlaced.

Electricity and water

Each cubic meter of fresh water with seawater will generate approximately 0.65 kW electric – enough to provide energy to a home by American average income for about 30 minutes. Globally, renewable energy can theoretically be from coastal wastewater treatment plants around 18 gigawatt-enough to provide more than 1,700 homes in one year.

The battery of the Stanford team is not the first technology to succeed in green energy collection, but is the first technology to use battery electrochemical instead of pressure or membrane osmosis. If deployed at a large scale, this technology provides a simpler, more cost-free, power-saving solution.

The first process when fresh water discharges into will release the sodium and chloride ions from the electrodes of the battery in the solution, creating the current. Then, when the salty water enters will take place the rapid exchange between sweet sewage, the electrodes absorb the sodium and chloride ions, taking the process of charging the batteries.

Although laboratory tests show a low power output per electrode area, the potential increase in battery capacity is considered more feasible than all previous renewable electrical technologies due to the volume of the small battery , simplified construction, continuous energy generation, no need for osmotic membranes, electrical charge and voltage control devices.

The electrodes were built in Prussian blue (the Fe ₇ formula (CN) ₁ ₈), and Polypyrrole. The design materials for the relatively solid salt power battery, the coating of polyvinyl alcohol and sulfosuccinic acid have the effect of protecting the electrodes from corrosion. If developed, optimized and powered by the power supply process, this technology can provide adequate voltage and current for any coastal wastewater treatment plant. Excess power can be transferred to an industrial plant nearby.