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Iron and Aluminum Compounds for Removing Phosphorus and Turbidity from Pond Waters. Claude E. Boyd, Puan Pengseng and Suthira Soongsawang Department of Fisheries and Allied Aquacultures Auburn University, Alabama 36849 USA. Al 3+ Al 3+. Turbidity Removal. .
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Iron and Aluminum Compounds for Removing Phosphorus and Turbidity from Pond Waters Claude E. Boyd, Puan Pengseng and Suthira Soongsawang Department of Fisheries and Allied Aquacultures Auburn University, Alabama 36849 USA
Al3+ Al3+ Turbidity Removal Al3+ _ Soil colloids + Al3+(Fe3+) _ Soil colloids The neutral particles will flocculate and settle from the water.
Phosphorus Removal AL3+ + H2PO4- + 2H2O AlPO42H2O + 2H+ Fe3+ + H2PO4- + 2H2O FePO42H2O + 2H+
Effect on Total Alkalinity Al3+ + 3H2O = Al(OH)3 + 3H+ CaCO3 + 2H+ = CO2 + H2O + Ca2+ 1 mg/L Al3+ = 5.6 mg/L CaCO3 Same reaction for iron, but 1 mg/L Fe3+ = 2.7 mg/L CaCO3