NUTRIENT RECOVERY FROM LANDFILL LEACHATE THROUGH STRUVITE CRYSTALLIZATION METHOD USING AIR-CATHODE ELECTROCOAGULATION (ACEC) TECHNOLOGY
The presence of excess phosphorus and nitrogen in water bodies can cause environmental problems. The wastewater treatment method that is being developed to overcome this problem by recovery ammonium and phosphorus into struvite or struvite crystallization using AirCathode Electrocoagulation techno...
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| Format: | Final Project |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/81077 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | The presence of excess phosphorus and nitrogen in water bodies can cause environmental
problems. The wastewater treatment method that is being developed to overcome this problem
by recovery ammonium and phosphorus into struvite or struvite crystallization using AirCathode Electrocoagulation technology. This method uses electrochemical principles,
oxidation of the Mg anode plate from Mg0
to Mg2+ and O2 reduction from ambient air to OH-.
One of the factors that affect struvite crystallization process is flow rate which influences
nutrient removal and struvite formation. This research used four variations of flowrate value,
1 mL/minute, 2 mL/minute, 3 mL/minute, and 4 mL/minute. The research was conducted by
measuring the efficiency of nutrient removal and analyzing the characteristics of precipitates
using SEM-EDS method. Polarization tests and electricity production analysis were also
conducted to determine the characteristics of the ACEC reactor. The results showed that there
was an optimum flowrate value, 2 mL/minute, with highest nutrient removal efficiency and
struvite formation. Using flowrate values <2 mL/minute or >2 mL/minute reduces nutrient
removal efficiency and inhibiting precipitate formation. Based on the polarization curve, a
maximum power density of 293.8 mW/cm2
is obtained and there is an overpotential loss of
1650 mV. Electricity production at all four flowrate variations decreases during reactor operation |
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