Role of nitrogen transport for efficient energy conversion potential in low carbon and high nitrogen/phosphorus wastewater by microalgal-bacterial system

Xue Li, Chaofan Zhang, Wenying Qu, Peng Xie, Youping Xie, Jo Shu Chang, Shih Hsin Ho

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

Microalgal-bacterial system (MBS) is potential biotechnology in wastewater treatment because it can remedy defects of conventional processes (e.g., insufficient carbon source and imbalanced elements ratio). However, the mechanisms of nitrogen (N) transport and removal in MBS are still unclear. In this study, it was discovered that MBS was conducive to adsorb NH4+-N and NO3-N through electrical neutralization, while extracellular polymeric substances (EPS) could provide binding sites (e.g., –OH and –CH3) for enhancing N transport and removal. The microalgae-bacteria interaction could accelerate N transport and removal from aqueous solution to cell. More importantly, the microalgal starch biosynthetic metabolism exhibited demonstrating the energy production potential could be boosted via MBS. Overall, the NO3-N and NH4+-N removal efficiencies, and energy yield were 82.28%, 94.15%, and 86.81 kJ/L, respectively, which are better than other relevant studies. Altogether, it is meaningful for revealing the applicability of MBS for treating wastewater and producing energy.

原文English
文章編號127019
期刊Bioresource technology
351
DOIs
出版狀態Published - 2022 5月

All Science Journal Classification (ASJC) codes

  • 生物工程
  • 環境工程
  • 可再生能源、永續發展與環境
  • 廢物管理和處置

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