Performance and microbial community structure of a polar Arctic Circle aerobic granular sludge system operating at low temperature

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

  • Alejandro Gonzalez-Martinez
  • Barbara Muñoz-Palazon
  • Paula Maza-Márquez
  • Alejandro Rodriguez-Sanchez
  • Jesus Gonzalez-Lopez
  • Riku Vahala

Organisaatiot

  • University of Granada

Kuvaus

The aim of this work was to study the performance and microbial community structure of a polar Arctic Circle aerobic granular sludge (AGS) system operating at low temperature. Thus, an AGS bioreactor was operated at 7, 5 and 3 °C of temperature using a cold-adapted sludge from Lapland. At 5 °C, it yielded acceptable conversion rates, in terms of nitrogen, phosphorous, and organic matter. However, under 3 °C a negligible nitrogen and phosphorous removal performance was observed. Below 5 °C, scanning electron microscopy studies showed a wispy, non-dense and irregular granular structure with a strong outgrowth of filamentous. Moreover, Illumina next-generation sequencing showed a heterogeneous microbial population where SM1K20 (Archaea), Trichosporon domesticum (Fungus), and Zooglea, Arcobacter and Acinetobacter (Bacteria) were the dominant phylotypes. Our study suggests that AGS technologies inoculated with North Pole sludge could be operated, in cold regions for a period longer than 3 months (winter season) under 5 °C of water temperature.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut22-29
Sivumäärä8
JulkaisuBioresource Technology
Vuosikerta256
TilaJulkaistu - 1 toukokuuta 2018
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 17668966