Thesis
Effect of pH on Nitrate Removal in Simulated Wastewater by Electrochemically-Generated NZVI Coupled with Breakpoint Chlorination
Nitrate reduction at different pHs by electrochemically generated nZVI (nano zero valent iron)
coupled with breakpoint chlorination was investigated. The availability of H+ affected the rate and
extent of iron ion reduction, impacting how nZVI particles developed. Additionally, pH also
significantly impacts the rate of nZVI corrosion. Through the electrolysis process, the precursor
chemical, FeCl2
, was given extra electric energy to decompose into Fe2+
and Cl2, which is the source
for the remediation agents (Fe0 and Cl2
respectively). Hypothetically, the Fe0 would reduce nitrate to ammonia, while the chlorine would continue to reduce the ammonia to harmless nitrogen gas.
However, in this complex system, parameter measurement problems hinder the conclusion decision.
Thus, this report was written to recite the pre-treatments necessary for the samples before readings.
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