A Promising Process to Remove Nitrate from Solar Panel Production Wastewater and Meanwhile Generating Electricity

For traditional heterotrophic denitrification technology, organics are usually added as the electron donor for nitrate removal, which increases operation cost wastewater treatment. Solar panel production contains a large amount of nitrate. To decrease and reduce CO2 emissions, an iron anode microbial fuel cell (Fe-MFC) was constructed to treat solar by sequencing batch operation. The results showed that maximum removal efficiency reached 99.98% rate 0.049 kg·m−3·d−1. output voltages rose rapidly 560 ± 10 mV within 2 h then stabilized at 520 50 about 40 h. Combining detection coulombic efficiency, CV curve, q* value internal resistance; in electricity generation probably resulted from passivation aging cathode biofilm decrease. From analysis, Chryseobacterium, Thermomonas Thauera predominated end Fe-MFC Microorganisms cannot adapt autotrophic environment died out finally. Periodic replacement domestication bio-cathode were essential maintain efficiency. technology feasible be used remove generate wastewater. Without addition, cost-efficient environmentally friendly, endowing itself with broad prospect application.