Bacterial community structure in a biofilter used as a pretreatment for seawater desalination
- Bacterial community structure in a biofilter used as a pretreatment for seawater desalination
- Sanghyun Jeong; 배효관; Gayathri Naidu; 정다운; 이석헌; Saravanamuthu Vigneswarana
- Bacterial community; Biofilter; PCA; Pretreatment; Seawater; T-RFLP
- Issue Date
- Ecological engineering
- VOL 60, 370-381
- In this study, two biofilters with different media, anthracite and granular activated carbon (GAC), wereused to pre-treat seawater for desalination. Both biofilters had the same operating conditions that lastedfor 75 days. The bacterial community structures in the filter media were studied during the biofilters’operation using terminal restriction fragment length polymorphism (T-RFLP) combined with principalcomponent analysis (PCA), clustering of samples and sequencing based on the 16S rRNA gene. Bacterialcommunity structure analyzed from T-RFLP patterns showed a dynamic shift at the top parts of the biofil-ters, while relatively stable bacterial community structures were observed in the middle and bottom partsof biofilters. The GAC biofilter consisted of diverse heterotrophs while the anthracite biofilter was mainlycomposed of sulfur-oxidizing and reducing bacteria, and alkalitrophic heterotrophs. This is associatedwith sulfur being a present impurity in the anthracite medium.
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