The effect of current and filtration on hydrogen production in seawater electrolysis

Project Information

Title: The effect of current and filtration on hydrogen production in seawater electrolysis

Subject: Chemistry

Grade level: Middle School - Grades 7-9

Academic Level: Ordinary

Project Type: Experimental

Cost: Low

Awards: 1st Place, Canada Wide Virtual Science Fair ($400)

Affiliation: Canada Wide Virtual Science Fair

Year: 2013

Materials, Techniques and Concepts: Hoffman apparatus and 2 platinum electrodes, electronic balance, DC power supply, electrolytes

Description: This project researches if different voltages / amperages and electrolytes affect the volume of hydrogen produced using water electrolysis and if preliminary filtration methods increase hydrogen production in seawater electrolysis? The first step is to prepare equal concentration electrolyte solutions; then by using a Hoffman apparatus and a DC power supply the amount of hydrogen and oxygen accumulated by the electrodes is measured at different voltages and at different electrolyte concentrations. The same is repeated by testing filtered seawater.

Link: www.virtualsciencefair.org...

Background

The dependence of current on the concentration of sodium chloride in the electrolyte

Source: Wikipedia (All text is available under the terms of the Creative Commons Attribution-ShareAlike License)

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