Hydrogen production and ammonium recovery from urine by a Microbial Electrolysis Cell

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• 作者：P. Kuntke^a ; ^{philipp.kuntke@wetsus.nl" class="auth_mail} ; ^{philipp.kuntke@arcor.de" class="auth_mail} ; T.H.J.A. Sleutels^a ; M. Saakes^a ; C.J.N. Buisman^a ; ^b
• 关键词：Ammonia removal ; Microbial Electrolysis Cell ; Urine treatment
• 刊名：International Journal of Hydrogen Energy
• 出版年：26 March, 2014
• 年：2014
• 卷：39
• 期：10
• 页码：4771-4778
• 全文大小：462 K

文摘

We investigated the use of a Microbial Electrolysis Cell (MEC) for the ammonium removal, COD removal and hydrogen production from five times diluted urine. During operation with a batch cathode, a current density of 23.07聽卤聽1.15聽A聽m^鈭? was achieved corresponding to a hydrogen production rate of 48.6聽卤聽7.47聽m³聽H₂聽m^鈭?聽MEC聽d^鈭?, an ammonium removal rate of 173.4聽卤聽18.1聽g聽N聽m^鈭?聽d^鈭? and a COD removal rate of 171.0聽卤聽16.9聽g聽COD聽m^鈭?聽d^鈭?. Ammonia stripping was not possible in the applied MEC and ammonia diffusion from cathode to anode compartment led to a relatively short stable operation period. The stable operation period was prolonged by addition of new cathode media (HRT 6聽h), but this resulted in a lower current density (14.64聽卤聽1.65聽A聽m^鈭?), hydrogen production rate (32.0聽卤聽0.89聽m³聽H₂聽m^鈭?聽MEC聽d^鈭?), ammonium removal rate (162.18聽卤聽10.37聽g聽N聽m^鈭?聽d^鈭?) and COD removal rate (130.56聽卤聽4.45聽g聽COD聽m^鈭?聽d^鈭?).