Characterization of preconcentrated domestic wastewater toward efficient bioenergy recovery: Applying size fractionation, chemical composition and biomethane potential assay

Yuan Yang, Yisong Hu, Ao Duan, Xiaochang C. Wang, Huu Hao Ngo, Yu You Li

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Domestic wastewater (DWW) can be preconcentrated to facilitate energy recovery via anaerobic digestion (AD), following the concept of “carbon capture–anaerobic conversion–bioenergy utilization.” Herein, real DWW and preconcentrated domestic wastewater (PDWW) were both subject to particle size fractionation (0.45–2000 μm). DWW is a type of low-strength wastewater (average COD of 440.26 mg/L), wherein 60% of the COD is attributed to the substances with particle size greater than 0.45 μm. Proteins, polysaccharides, and lipids are the major DWW components. PDWW with a high COD concentration of 2125.89 ± 273.71 mg/L was obtained by the dynamic membrane filtration (DMF) process. PDWW shows larger proportions of settleable and suspended fractions, and accounted for 63.4% and 33.8% of the particle size distribution, and 52.4% and 32.2% of the COD, respectively. The acceptable biomethane potential of 262.52 ± 11.86 mL CH4/g COD of PDWW indicates bioenergy recovery is feasible based on DWW preconcentration and AD.

Original languageEnglish
Article number124144
JournalBioresource Technology
Volume319
DOIs
Publication statusPublished - 2021 Jan

Keywords

  • Bioenergy production
  • Biomethane production potential
  • Carbon capture
  • Domestic wastewater preconcentration
  • Resource recovery

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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