We measured the highest net specific oxygen production rate (opr net) as 5.73 · 10 −3 mol O2 g −1 h −1 at the lowest oxygen uptake rate (OUR) of 1.00 · 10 −4 mol O2 L −1 h −1. Due to higher cell densities, we also demonstrated the increasing shading effect by a decrease of opr net, reaching the lowest value of 1.25 10 −5 mol O2 g −1 h −1.

1988年11月1日 · Oxygen for the aerobic treatment of wastewater in High Rate Algal Pond (HRAP) systems arises from biogenic production by microalgae during photosynthesis and from absorption of atmospheric oxygen through the air/water interphase. The total quantity of available oxygen per m and day determines the permissible BOD loading rate of a HRAP.

2019年5月1日 · During phototrophic growth, microalgae consume carbon dioxide (CO 2) and produce oxygen (O 2). The evolved oxygen can easily build up to high concentrations in geometries like closed photobioreactors (PBRs), and this can have a negative effect on biomass productivity by inhibiting growth of the microalga cells.

2022年7月20日 · A new empirical model for the net oxygen production rate of an alkaliphilic microalgae consortium (AMC) with prominent members of Picochlorum and Pseudoanabaena was developed as a function of sulfide at concentrations up to 1.50 mM. The kinetic model consists of a non-continuous function with two domains for sulfide concentration, which ...

2020年5月20日 · We demonstrate that the hypoxic environment in tumors is markedly improved by in situ–generated oxygen through microalgae-mediated photosynthesis, resulting in notably radiotherapeutic efficacy. Furthermore, the chlorophyll from microalgae produces reactive oxygen species during laser irradiation, further augmenting the photosensitizing ...

The paper aims to represent the combined effect of light, oxygen concentration and temperature on microalgae growth to account for the oxidative stress affecting the cultures. The model was validated with experimental data for several species and it shows a strong impact of oxygen concentration on productivity, depending on temperature. The ...

We measured the highest net specific oxygen production rate (oprnet) as 5.73 10−3 molO2 g−1h−1 at the lowest oxygen uptake rate (OUR) of 1.00. · 10−4 molO2 L−1 h−1. Due to higher cell densities, we also demonstrated the increasing shading effect by a decrease of oprnet, reaching the lowest value of 1.25 10−5 molO2 g−1 h−1.

2016年9月8日 · We measured the highest net specific oxygen production rate (opr net) as 5.73 · 10-3 mol O2 g-1 h-1 at the lowest oxygen uptake rate (OUR) of 1.00 · 10-4 mol O2 L-1 h-1. Due to higher cell densities, we also demonstrated the increasing shading effect by a decrease of opr net, reaching the lowest value of 1.25 10-5 mol O2 g-1 h-1. Nevertheless ...

2024年3月1日 · The minimization of the volume of the microalgae culture has a twofold important implication: i) self-shading effects during the measurements are minimized for an unbiased determination of photosynthetic parameters and ii) changes in the rate of oxygen evolution per volume of culture are relatively small, enabling to run even longer-time ...

2021年3月9日 · Here we propose a new model to represent the combined effect of light, oxygen concentration and temperature (LOT-model) on microalgae growth. The LOT-model introduces oxygen concentration in order to represent the oxidative stress affecting the cultures, adding a toxicity term in the expression of the net growth rate.