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AguaClara / humic_acid

Investigate the optimal coagulant dosage at different humic acid concentrations
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Spectrophotometer Test-Clay +Water (Oct.1-Oct.15) #28

Closed VanessaQi closed 5 years ago

VanessaQi commented 6 years ago

Continue to test clay+water and compare the graphical differences between HA+water and clay+water

Carolynwamg commented 5 years ago

Found linear relationship between clay turbidity and absorbance. The relationship was obtained: y = 0.0199x + 0.0554 . By measuring the turbidity of clay in an effluent stream, the clay's absorbance can be calculated from the relationship derived in the graph. This value can then be subtracted from the overall absorbance to find the absorbance of humic acid.

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VanessaQi commented 5 years ago

We only ran experiments for clay influent w/ different turbidities and measured the corresponding absorbances. The linear relationship helps us approximate clay absorbance based on turbidity.

mlee1721 commented 5 years ago

We used the old experimental apparatus. Water was pumped through the system with water pump. Clay concentrations added through clay pump (used feedback control system ProCoDA to maintain desired clay concentration). System then fed through floc tube into spectrophotometer and effluent turbidity meter