A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Overestimated role of inoculation bacteria‐algae ratio in wastewater treatment
Microalgae‐bacteria systems present a promising approach for CO2 reduction in wastewater treatment. The effect of inoculation bacteria‐algae ratio on performance was investigated in this study. Different inoculation ratios (bacteria: algae 1:2, 1:1, 1:0.5, 1:0.25, 1:0.125, w/w) obtained comparable nutrients removal (p > 0.05). Over time, the bacteria‐algae ratios converged into two groups (3:1 and 4:1), demonstrating self‐adaption between bacteria and microalgae. Furthermore, principal component analysis (PCA) distinguished the performance of reactors into two groups, one group consisting of 1:2, 1:1, and 1:0.5 ratios and the other group consisting of 1:0.25 and 1:0.125 ratios, confirming their convergence in terms of nutrient removal and photosynthetic properties. The performance differed merely in sludge volume index (SVI) and nitrite accumulation, with 1:2 and 1:0.125 being the most prone to accumulate nitrite. This study implies that photobioreactor performance was not sensitive to inoculation ratio, whose role was overestimated, since microalgae and bacteria self‐assemble to form niches. Effect of inoculation bacteria‐algae ratio on performance was overestimated Photosynthesis and nutrients removal were grouped at different inoculation ratios Different ratio showed similar nutrients removal efficiency Self‐adaption made ratios of 1:2, 1:1, 1:0.5 converge into 3:1
Overestimated role of inoculation bacteria‐algae ratio in wastewater treatment
Microalgae‐bacteria systems present a promising approach for CO2 reduction in wastewater treatment. The effect of inoculation bacteria‐algae ratio on performance was investigated in this study. Different inoculation ratios (bacteria: algae 1:2, 1:1, 1:0.5, 1:0.25, 1:0.125, w/w) obtained comparable nutrients removal (p > 0.05). Over time, the bacteria‐algae ratios converged into two groups (3:1 and 4:1), demonstrating self‐adaption between bacteria and microalgae. Furthermore, principal component analysis (PCA) distinguished the performance of reactors into two groups, one group consisting of 1:2, 1:1, and 1:0.5 ratios and the other group consisting of 1:0.25 and 1:0.125 ratios, confirming their convergence in terms of nutrient removal and photosynthetic properties. The performance differed merely in sludge volume index (SVI) and nitrite accumulation, with 1:2 and 1:0.125 being the most prone to accumulate nitrite. This study implies that photobioreactor performance was not sensitive to inoculation ratio, whose role was overestimated, since microalgae and bacteria self‐assemble to form niches. Effect of inoculation bacteria‐algae ratio on performance was overestimated Photosynthesis and nutrients removal were grouped at different inoculation ratios Different ratio showed similar nutrients removal efficiency Self‐adaption made ratios of 1:2, 1:1, 1:0.5 converge into 3:1
Overestimated role of inoculation bacteria‐algae ratio in wastewater treatment
Zhao, Huangbo (author) / Zhong, Xin (author) / Yao, Zexin (author) / Yang, Zihua (author) / Fan, Jie (author)
2025-01-01
10 pages
Article (Journal)
Electronic Resource
English