한빛사논문
- 조회346
Hyeonjung Yu a,1, Dayoung Ko a, Changsoo Lee a,b
aDepartment of Urban & Environmental Engineering, UNIST, Ulsan 44919, Republic of Korea
bGraduate School of Carbon Neutrality, UNIST, Ulsan 44919, Republic of Korea
1Current affiliation: Geologic Environment Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Republic of Korea.
Corresponding author : Changsoo Lee
Abstract
This study examined continuous mixed-culture microalgae cultivation for nutrient removal from anaerobic digestion (AD) effluents in photobioreactors, while altering the NH4+-N loading rate (NLR) by adjusting either the hydraulic retention time (HRT) (reactor set RH) or the influent NH4+-N concentration (reactor set RS). Both RH and RS demonstrated efficient nutrient removal and microalgae cultivation at NLRs of 4-10 mg NH4+-N/L∙d, reaching peak performance at 10 mg NH4+-N/L∙d. Within this range, RH obtained greater biomass yield and productivity, while RS maintained higher microalgal concentrations. The cultivated biomasses obtained from RH and RS had good settleability and suitable fatty acid compositions as a biodiesel feedstock, although their organic composition varied considerably with NLR and HRT. Parachlorella overwhelmingly dominated the reactors' microalgal communities throughout the experiment, co-existing with various microalgae-associated bacteria. Changes in NLR significantly influenced the bacterial community structures, underscoring its critical role in determining reactor performance and microalgal-bacterial community behavior.
논문정보
- Research article
- 2023년 08월 (BRIC 등록일 2023-11-09)
- 국내 연구진
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