Effects of Different pH Control Strategies on Microalgae Cultivation and Nutrient Removal from Anaerobic Digestion Effluent.

ABSTRACT: This study investigated nutrient removal from anaerobic digestion effluent by cultivating mixed-culture microalgae enriched from anaerobic sludge under different pH conditions: R_UC (uncontrolled), R_7-8 (maintained at 7-8), and R_<8 (maintained below 8). Significant amounts of NH₄⁺-N were lost by volatilization in R_UC cultures due to increased pH values (≤8.6) during the early period of cultivation. The pH control strategies significantly affected the biological NH₄⁺-N removal (highest in R_7-8), microalgal growth (highest in R_7-8), biomass settleability (highest in R_<8), and microalgal growth relative to bacteria (highest in R_<8)

SUBMITTER: Yu H 

PROVIDER: S-EPMC8879683 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature