The focus of this work was to determine what conditions should be used to maximise water purification through algae growth. In addition, this study determined the effect of changing the process parameters on algae growth, investigated what impurities there were before and after water purification and provided an optimum solution for water treatment by algae purification. The experiments were carried out as two separate tests, Test 1 and Test 2, to determine the process parameters, temperature and carbon dioxide concentration, to see the effects they have on the nutrient uptake of algae for water purification. Ion Chromatography (IC) and Chemical Oxygen Demand (COD) are employed to analyse the samples. The findings from this indicates that algae can significantly purify wastewater through nutrient uptake. The rate of phosphate, chloride and sulfate removal, as well as COD reduction, were all affected when the temperature and carbon dioxide flow rates were varied. The values for temperature and percentage of flow that produced an optimum solution for water purification by algal growth were 30°C and 100%, respectively. These parameters can be used to design an optimum water purification process using algal growth as an alternative to other water treatment options, returns.
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DOI: 10.1201/9781003538646-6
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