Influence of Light Emitting Diode (Led) on Microalgae

Al‐Amshawee, Sajjad Khudhur Abbas; Yunus, Mohd Yusri Bin Mohd

doi:10.15282/jceib.v5i2.3771

Cited by 3 publications

(3 citation statements)

References 32 publications

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“…LED light with a longer exposure time still resulted in significantly higher biomass and astaxanthin productivities per mole photons compared to high-pressure sodium light with a shorter light/dark cycle [6,12]. This explains why the production costs of astaxanthin when using LED light sources are always lower than with other artificial light sources [15,[25][26][27].…”

Section: Discussionmentioning

confidence: 99%

“…Bioengineering 2023, 10, x FOR PEER REVIEW 13 of 1 light/dark cycle [6,12]. This explains why the production costs of astaxanthin when usin LED light sources are always lower than with other artificial light sources [15,[25][26][27]. In suspension cultivation, the addition of NaHCO3 induced phase transition an astaxanthin accumulation of H. pluvialis [23,28].…”

Section: Discussionmentioning

confidence: 99%

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Effect of LED Illumination Cycle and Carbon Sources on Biofilms of Haematococcus pluvialis in Pilot-Scale Angled Twin-Layer Porous Substrate Photobioreactors

Do,

Quach-Van,

Nguyen

et al. 2023

Bioengineering

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Light-emitting diodes are increasingly used as artificial light sources in Haematococcus pluvialis cultivation due to the fact of their energy advantages. The immobilized cultivation of H. pluvialis in pilot-scale angled twin-layer porous substrate photobioreactors (TL-PSBRs) was initially performed with a 14/10 h light/dark cycle and showed relatively low biomass growth and astaxanthin accumulation. In this study, the illumination time with red and blue LEDs at a light intensity of 120 µmol photons m−2 s−1 was increased to 16–24 h per day. With a light/dark cycle of 22/2 h, the biomass productivity of the algae was 7.5 g m−2 day−1, 2.4 times higher than in the 14/10 h cycle. The percentage of astaxanthin in the dry biomass was 2%, and the total amount of astaxanthin was 1.7 g m−2. Along with the increase in light duration, adding 10 or 20 mM NaHCO3 to the BG11-H culture medium over ten days of cultivation in angled TL-PSBRs did not increase the total amount of astaxanthin compared with only CO2 addition at a flow rate of 3.6 mg min−1 to the culture medium. Adding NaHCO3 with a 30–80 mM concentration inhibited algal growth and astaxanthin accumulation. However, adding 10–40 mM NaHCO3 caused algal cells to accumulate astaxanthin at a high percentage in dry weight after the first four days in TL-PSBRs.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Effect of LED Illumination Cycle and Carbon Sources on Biofilms of Haematococcus pluvialis in Pilot-Scale Angled Twin-Layer Porous Substrate Photobioreactors

Do,

Quach-Van,

Nguyen

et al. 2023

Bioengineering

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“…Discharge and dumping of chemically contaminated wastewater, including dyes, pesticides, solvents, and heavy metals threats our freshwater [1]. Scientific understanding of the wastewater impact has evolved with good credibility to prove several a number of severe damages triggered by contaminated water.…”

Section: Introductionmentioning

confidence: 99%

A review of wastewater bacterial bio oxidation: mechanisms, reactions, and behaviors

Al‐Amshawee

Yunus

2021

JCEIB

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The most overlooked biological process is the oxidation process, due to the poor technical understanding of bioremediation and the many unexplained biological mechanisms. As a matter of fact, wastewater companies favor the physical and chemical approaches over the biological means to ensure process performance. Biological oxidation provides environmentally friendly treatment with limited operational requirements. It has a tremendous ability to metabolize ammonia, H2S, phosphate, and ferrous iron under the right conditions. Bacterial communities attack these wastewater components through using oxygen as a strong electron acceptor, resulting in simplified forms of wastewater components (e.g., ammonia to nitrogen gas). This manuscript reviews in details the mechanisms of wastewater bacteria against various pollutants, with the possible reactions and behaviors. It also presents the benefits of utilizing wastewater microorganisms against different pollutants.

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Biocarriers for biofilm immobilization in wastewater treatments: a review

Al‐Amshawee

Yunus

et al. 2020

Environ Chem Lett

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Influence of Light Emitting Diode (Led) on Microalgae

Cited by 3 publications

References 32 publications

Effect of LED Illumination Cycle and Carbon Sources on Biofilms of Haematococcus pluvialis in Pilot-Scale Angled Twin-Layer Porous Substrate Photobioreactors

Effect of LED Illumination Cycle and Carbon Sources on Biofilms of Haematococcus pluvialis in Pilot-Scale Angled Twin-Layer Porous Substrate Photobioreactors

A review of wastewater bacterial bio oxidation: mechanisms, reactions, and behaviors

Biocarriers for biofilm immobilization in wastewater treatments: a review

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