The process. (IMAGE)
Caption
The finely ground contents of a car battery cell are added to and dissolved in oxalic acid. By fine-tuning the temperature, concentration and time, the researchers have come up with an excellent new recipe for using oxalic acid – an environmentally friendly reactant ingredient found in plants such as rhubarb and spinach.
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Chalmers University of Technology | Anna-Lena Lundqvist
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