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Solving the Global Water Crisis

CSEF · 2019 Chemistry

Jason Yang · Carden School of Fresno, Fresno, Fresno County

Overview

Objectives The purpose of my experiment is to test what the most effective way to purify water is. I compared Photocatalysis, Reverse Osmosis, Graphene, and Activated Carbon water treatment methods. Methods A Reverse Osmosis system, graphene, activated carbon, and titanium dioxide. I performed the experiment by running water through the filters and measuring the TDS (Total Dissolved Solids) using an electrical conductivity meter. Results The change in TDS (Total Dissolved Solids) levels were compared after passing through each filter. The performance of the Reverse Osmosis was shown to be the most effective at a 22.52% decrease in TDS (Total Dissolved Solids). Conclusions Repeated trials with multiple filters revealed that Reverse Osmosis is the best at filtering contaminants from water. It is concluded that Reverse Osmosis is the most effective filter out of Photocatalysis, Graphene, Reverse Osmosis, and Activated Carbon.

Summary statement

I tested various filters and found that Reverse Osmosis is the most effective.

Help received

None. I designed and carried out the experiment and built the filters myself.

Competition history

  • CSEF 2019 Chemistry · Entry J0631

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