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首页> 外文期刊>RSC Advances >Simultaneous nitrification and denitrification using a polypyrrole/microbial cellulose electrode in a membraneless bio-electrochemical system
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Simultaneous nitrification and denitrification using a polypyrrole/microbial cellulose electrode in a membraneless bio-electrochemical system

机译：在无膜生物电化学系统中使用聚吡咯/微生物纤维素电极同时硝化和反硝化

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摘要

In this study, the feasibility of ammonium and total nitrogen (TN) removal from aqueous solution using a simultaneous nitrification and denitrification process was studied in a membraneless (single chamber) bio-electrochemical system with a novel electrode. The main objectives were to synthesize a polypyrrole/microbial cellulose (PPy/MC) composite and utilize it as a novel electrode material. To determine the mechanical properties of PPy/MC, the tensile strength and Young's modulus were investigated. A biofilm was prepared using the fabricated electrode during the first few weeks. Effective parameters such as initial ammonium concentrations (NH4+ similar to 15-150 mg N L-1), HRT (6-72 h), carbon/ nitrogen ratio (C/N ratio similar to 0-4), current intensity (2-10 mA), and pH (6.5-8.5) were evaluated. The following optimum values were obtained: HRT, 24 h; C/N ratio, 2; electric current, 6 mA; and pH, 7-7.5 at a constant ammonium concentration of 77.77 mg N L-1. It can be concluded from the experimental data that under optimal conditions about 97.42 and 62.47% of ammonium and TN were removed successfully, respectively.
机译：在这项研究中，在具有新型电极的无膜（单室）生物电化学系统中，研究了使用同时硝化和反硝化工艺从水溶液中去除铵和总氮（TN）的可行性。主要目的是合成聚吡咯/微生物纤维素（PPy / MC）复合材料，并将其用作新型电极材料。为了确定PPy / MC的机械性能，研究了抗张强度和杨氏模量。在最初的几周内，使用制成的电极制备了生物膜。有效参数，例如初始铵浓度（NH4 +类似于15-150 mg N L-1），HRT（6-72小时），碳/氮比（C / N比类似于0-4），电流强度（2- 10 mA）和pH（6.5-8.5）进行了评估。获得以下最佳值：HRT，24小时; C / N比为2;电流6 mA;恒定铵浓度为77.77 mg N L-1时，pH为7-7.5。从实验数据可以得出结论，在最佳条件下，分别成功去除了约97.42％和62.47％的铵和TN。

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