1 Ocak 2022 Dergi makalesi Açık Erişim

Demirkaya, Esma; Ciftcioglu, Bengisu; Ozyildiz, Goksin; Zengin, Gulsum Emel; Pala-Ozkok, Ilke; Cokgor, Emine; Tas, Didem Okutman

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{
  "DOI": "10.1016/j.bej.2021.108233", 
  "abstract": "The present study investigated the disregarded impact of microbial community composition, diversity and abundance of the starter biomass on lab-scale bioreactor performance, steady-state long time operation, biodegradation outcome and microbial kinetics. Standard lab-scale experiments are usually initiated with inoculum taken from wastewater treatment plants (WWTPs) without considering microbial community composition. Two identical sequencing batch bioreactors (SBR-1, SBR-2) were operated with inocula obtained from two domestic WWTPs to assess the role of inoculum composition on reactor performance and treatment efficacy. Filamentous microorganisms were dominated in SBR-1 (SVI: 265 mL/g), whereas their supremacy was diminished in SBR-2 (SVI: 160 mL/g). Next generation sequencing analyses verified high abundance of Candidatus Microthrix (14%) and Kouleothrix spp. (3%) in SBR-1. Although Chloroflexi C10-SB1A metagenome accounted for 16% of WWTP-2 community, SBR-2 was operated at steady-state for longer period without deterioration. Statistical indicators based on molecular studies showed that WWTP-2 has higher diversity than WWTP-1. Higher biodiversity in WWTP-2 community supported the stable process performance. Modelling studies denoted an increase in half saturation coefficients (K-s) in filamentous microorganisms dominated reactor. The results of this study provide insight on how the filamentous organisms typically found in WWTPs become a fundamental constituent during the bioreactor operation.", 
  "author": [
    {
      "family": "Demirkaya", 
      "given": " Esma"
    }, 
    {
      "family": "Ciftcioglu", 
      "given": " Bengisu"
    }, 
    {
      "family": "Ozyildiz", 
      "given": " Goksin"
    }, 
    {
      "family": "Zengin", 
      "given": " Gulsum Emel"
    }, 
    {
      "family": "Pala-Ozkok", 
      "given": " Ilke"
    }, 
    {
      "family": "Cokgor", 
      "given": " Emine"
    }, 
    {
      "family": "Tas", 
      "given": " Didem Okutman"
    }
  ], 
  "container_title": "BIOCHEMICAL ENGINEERING JOURNAL", 
  "id": "236366", 
  "issued": {
    "date-parts": [
      [
        2022, 
        1, 
        1
      ]
    ]
  }, 
  "title": "Comprehensive evaluation of starter culture impact on the bioreactor performance and microbial kinetics", 
  "type": "article-journal", 
  "volume": "177"
}