Nutrient Absorption and Biomass Production by the Marine Diatom Chaetoceros muelleri: Effects of Temperature, Salinity, Photoperiod, and Light Intensity

Minggat, Elizerberth; Roseli, Wardina; Tanaka, Yasuaki

doi:10.12911/22998993/129253

Cited by 12 publications

(14 citation statements)

References 29 publications

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“…Such stock solutions were then diluted to obtain antibiotic concentrations. Chaetoceros muelleri was obtained from the photobioreactor in our laboratory, which operated at room temperature (25 • C) with light:dark cycles of 12:12 h (light was set around 60 to 70 µmol photons m −2 s −1 ) [25] under an aeration rate of 0.4 L/min [2]. This study had two stages: the removal of antibiotics and ecotoxicology effects of antibiotics on algae (Figure 1).…”

Section: Methodsmentioning

confidence: 99%

The Potential of Chaetoceros muelleri in Bioremediation of Antibiotics: Performance and Optimization

Mojiri

Baharlooeian

Zahed

2021

IJERPH

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Antibiotics are frequently applied to treat bacterial infections in humans and animals. However, most consumed antibiotics are excreted into wastewater as metabolites or in their original form. Therefore, removal of antibiotics from aquatic environments is of high research interest. In this study, we investigated the removal of sulfamethoxazole (SMX) and ofloxacin (OFX) with Chaetoceros muelleri, a marine diatom. The optimization process was conducted using response surface methodology (RSM) with two independent parameters, i.e., the initial concentration of antibiotics and contact time. The optimum removal of SMX and OFX were 39.8% (0.19 mg L−1) and 42.5% (0.21 mg L−1) at the initial concentration (0.5 mg L−1) and contact time (6.3 days). Apart from that, the toxicity effect of antibiotics on the diatom was monitored in different SMX and OFX concentrations (0 to 50 mg L−1). The protein (mg L−1) and carotenoid (μg L−1) content increased when the antibiotic concentration increased up to 20 mg L−1, while cell viability was not significantly affected up to 20 mg L−1 of antibiotic concentration. Protein content, carotenoid, and cell viability decreased during high antibiotic concentrations (more than 20 to 30 mg L−1). This study revealed that the use of Chaetoceros muelleri is an appealing solution to remove certain antibiotics from wastewater.

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Section: Methodsmentioning

confidence: 99%

The Potential of Chaetoceros muelleri in Bioremediation of Antibiotics: Performance and Optimization

Mojiri

Baharlooeian

Zahed

2021

IJERPH

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“…nutrient uptake and growth of algae (Litchman et al, 2004;Shi et al, 2015;Minggat et al, 2021). Previous studies on phytoplankton growth mostly focused on the exponential phase while the lag growth phase was not fully considered.…”

Section: Spm Effects On Algae Growthmentioning

confidence: 99%

“…This can be attributed to (1) the presence of SPM attenuates the light, which is the energy source of photosynthesis, through scattering and absorbing processes (Kirk, 1985;Pierson et al, 2003;Bowers et al, 2009;Peng et al, 2009;Niimura et al, 2010;Liu et al, 2013a). (2) The uptake of nutrient was relatively lower in low light environments (Shi et al, 2015;Minggat et al, 2021), and nitrate reductase and nitrite reductase activities may also decrease under light stress (Li et al, 2004). (3) Some algae showed a physiological adaptation to light attenuation which involves increase in photosynthetic pigments and the changes in the macromolecular composition and ultrastructure of photosynthetic apparatus (Gilbes et al, 1996;MacIntyre et al, 2002;Kim et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

The Effects of Suspended Particulate Matter, Nutrient, and Salinity on the Growth of Amphidinium carterae Under Estuary Environmental Conditions

Jiang

Tong

et al. 2021

Front. Mar. Sci.

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The environmental conditions in estuaries display distinct variability along the river-ocean mixing continuum from turbid, eutrophic freshwater to clear, oligotrophic offshore oceanic water. In order to understand the effects of suspended particulate matter (SPM), nutrient, and salinity on phytoplankton growth, this study investigated the response of a harmful dinoflagellate (Amphidinium carterae Hulburt) to the ecological gradients in estuary environments. Rapid nutrient uptake and growth of A. carterae were detected in the nutrient-rich clear water, while nutrient concentration had little impact on the cellular chlorophyll a (Chl-a) content at the stationary phase. Light attenuation caused by SPM not only inhibited the specific growth rate of A. carterae but also prolonged its adaption period in turbid water, resulting in a delayed and weakened growth response. The elevated cellular Chl-a content under high SPM conditions resulting from photo-acclimation led to the decoupling of cell density and Chl-a concentration, indicating that Chl-a is not a reliable indicator for phytoplankton abundance in turbid environments. The combined effect of SPM and nutrient on specific growth rate of A. carterae can be explained by the comparative effect model, while the multiplicative effect model better predicted their interactive effect on the growth inhibitory rate (GIR). There is a transit of dominant limiting factor for phytoplankton growth along the salinity gradient in estuary environments. Salinity (for marine phytoplankton cannot survive under low salinity condition) and SPM are the dominant limiting factors at low salinities in nearshore turbid environments, while nutrient depletion exerts the dominant inhibitory effect in high salinity offshore water. Depending on the balance between enhancing nutrient limitation and reducing light limitation with increasing salinity, blooms most likely occur in the “optimal growth region” at intermediate salinities where light and nutrient are both suitable for phytoplankton growth.

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“…Freundlich isotherm factors were obtained by plotting log (x/m) against log (C e ). The liner equation for the calculation parameters of the Freundlich isotherm is provided in Equation (17). Based on the Freundlich isotherm, the maximum adsorption capacities (K f , mg g −1 ) were 0.39 (CBZ), 0.31 (SMT) and 0.26 (TRA), and the R 2 values were 0.921, 0.913 and 0.931, respectively.…”

Section: Adsorption Isotherm Study For the Removal Of Pharmaceuticals And Personal Care Products By Biocharmentioning

confidence: 99%

“…Meanwhile, the capability of the marine diatom Chaetoceros muelleri to remove PPCPs has not been thoroughly explored in previous studies. Minggat et al [ 17 ] stated that Chaetoceros muelleri is frequently used in aquacultural feed and is well known for its fast growth and easy maintenance. Wang et al [ 18 ] stated that Chaetoceros muelleri is one of the suitable microalgae for large-scale biomass and lipid production.…”

Section: Introductionmentioning

confidence: 99%

Removal of Pharmaceutical Micropollutants with Integrated Biochar and Marine Microalgae

et al. 2020

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Using microalgae to remove pharmaceuticals and personal care products (PPCPs) micropollutants (MPs) have attracted considerable interest. However, high concentrations of persistent PPCPs can reduce the performance of microalgae in remediating PPCPs. Three persistent PPCPs, namely, carbamazepine (CBZ), sulfamethazine (SMT) and tramadol (TRA), were treated with a combination of Chaetoceros muelleri and biochar in a photobioreactor during this study. Two reactors were run. The first reactor comprised Chaetoceros muelleri, as the control, and the second reactor comprised Chaetoceros muelleri and biochar. The second reactor showed a better performance in removing PPCPs. Through the response surface methodology, 68.9% (0.330 mg L−1) of CBZ, 64.8% (0.311 mg L−1) of SMT and 69.3% (0.332 mg L−1) of TRA were removed at the initial concentrations of MPs (0.48 mg L−1) and contact time of 8.1 days. An artificial neural network was used in optimising elimination efficiency for each MP. The rational mean squared errors and high R2 values showed that the removal of PPCPs was optimised. Moreover, the effects of PPCPs concentration (0–100 mg L−1) on Chaetoceros muelleri were studied. Low PPCP concentrations (<40 mg L−1) increased the amounts of chlorophyll and proteins in the microalgae. However, cell viability, chlorophyll and protein contents dramatically decreased with increasing PPCPs concentrations (>40 mg L−1).

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Nutrient Absorption and Biomass Production by the Marine Diatom Chaetoceros muelleri: Effects of Temperature, Salinity, Photoperiod, and Light Intensity

Cited by 12 publications

References 29 publications

The Potential of Chaetoceros muelleri in Bioremediation of Antibiotics: Performance and Optimization

The Potential of Chaetoceros muelleri in Bioremediation of Antibiotics: Performance and Optimization

The Effects of Suspended Particulate Matter, Nutrient, and Salinity on the Growth of Amphidinium carterae Under Estuary Environmental Conditions

Removal of Pharmaceutical Micropollutants with Integrated Biochar and Marine Microalgae

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