RRC ID 72692
著者 Wang Q, Yang Y, Shen Q, Chen X, Li F, Wang J, Zhang Z, Lei Z, Yuan T, Shimizu K.
タイトル Energy saving and rapid establishment of granular microalgae system from tiny microalgae cells: Effect of decrease in upflow air velocity under intermittent aeration condition.
ジャーナル Bioresour Technol
Abstract The novel type of microalgae granules (MGs) derived from tiny microalgae cells has received extensive attention due to its great potential for nutrient remediation and resource recovery in wastewater treatment whereas the long start-up time with increased labor expenses remains a bottleneck. In this study, an operation strategy at reduced upflow air velocity (UAV = 0.49 cm/s in RA) under intermittent aeration mode was proposed and compared with RB at a higher UAV (0.98 cm/s) in terms of MGs formation, maintenance, and energy consumption. Although the formation of MGs in RA was delayed for 12 days compared to RB, 40.78 % increase in chlorophyll-a content was detected in MGs in RA along with more cost-effective carbon, nitrogen, and phosphorus removals due to efficient microalgae assimilation and energy reduction. Results from this study provide new insight into minimizing energy input for rapid establishment and stable operation of MG systems towards environmentally sustainable wastewater management.
巻・号 363
ページ 127860
公開日 2022-11-1
DOI 10.1016/j.biortech.2022.127860
PII S0960-8524(22)01190-7
PMID 36041681
MeSH Biomass Carbon Chlorophyll Microalgae* Nitrogen Phosphorus Wastewater
IF 7.539
リソース情報
藻類 NIES-2195