Recovery of ammonia and sulfate from waste streams and bioenergy production via bipolar bioelectrodialysis

Water Research
Yifeng Zhang, Irini Angelidaki

Abstract

Ammonia and sulfate, which are prevalent pollutants in agricultural and industrial wastewaters, can cause serious inhibition in several biological treatment processes, such as anaerobic digestion. In this study, a novel bioelectrochemical approach termed bipolar bioelectrodialysis was developed to recover ammonia and sulfate from waste streams and thereby counteracting their toxicity during anaerobic digestion. Furthermore, hydrogen production and wastewater treatment were also accomplished. At an applied voltage of 1.2 V, nitrogen and sulfate fluxes of 5.1 g NH4(+)-N/m(2)/d and 18.9 g SO4(2-)/m(2)/d were obtained, resulting in a Coulombic and current efficiencies of 23.6% and 77.4%, respectively. Meanwhile, H2 production of 0.29 L/L/d was achieved. Gas recirculation at the cathode increased the nitrogen and sulfate fluxes by 2.3 times. The applied voltage, initial (NH4)2SO4 concentrations and coexistence of other ions were affecting the system performance. The energy balance revealed that net energy (≥ 16.8 kWh/kg-N recovered or ≥ 4.8 kWh/kg-H2SO4 recovered) was produced at all the applied voltages (0.8-1.4 V). Furthermore, the applicability of bipolar bioelectrodialysis was successfully demonstrated with cattle manure. The re...Continue Reading

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Citations

Apr 5, 2017·Chemical Record : an Official Publication of the Chemical Society of Japan ... [et Al.]·Heyang Yuan, Zhen He
Mar 10, 2018·Applied Microbiology and Biotechnology·P KuntkeC J N Buisman
Aug 29, 2020·World Journal of Microbiology & Biotechnology·Shuyu XiangLeipeng Cao
Nov 22, 2018·Environmental Science & Technology·Changyong ZhangT David Waite
Jul 22, 2017·Environmental Science & Technology·Xiangdan JinIrini Angelidaki
Sep 12, 2019·Environmental Science & Technology·Nannan ZhaoYifeng Zhang

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