Enhancing Algal Growth by Stimulation with LED Lighting and Ultrasound

Hsia, Shao‐Yi; Yang, Shiuh‐Kuang

doi:10.1155/2015/531352

Cited by 18 publications

(6 citation statements)

References 11 publications

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“…There have been quite a few studies conducted to highlight the influence of the US on algal growth [ 25 ]. Our research illustrated that an ultrasonic glass probe with a large diameter (26 mm) was used to stress the algal biomass.…”

Section: Resultsmentioning

confidence: 99%

The Influence of Ultrasound on the Growth of Nannochloris sp. in Modified Growth Medium

Vintilă

Vînătoru

Galan

et al. 2023

Life

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The influence of ultrasound irradiation on the algal biomass productivity as well as its oil content and fatty acids profile, grown in a modified Zarrouk medium, i.e., deproteinized whey waste solution, was investigated. The algal samples (Nannochloris sp. 424-1 microalgae) were grown for 7 days in a thermostated incubator at 28 °C, shaken under continuous light. During this period, the algal biomass was subjected to induced stress by ultrasonic irradiation at different powers and sonication time. The obtained results demonstrate that ultrasound stressing of algae biomass has a positive effect on both the quantity of biomass and the oil obtained, also causing a shift in fatty acid composition by increasing the proportion of C16 and C18 polyunsaturated fatty acids. A low dosage level of exposure to the ultrasound led to algal biomass increase as well as lipid accumulation. For both types of irradiation modes which were investigated, daily and only initial irradiation, the beneficial effect of the ultrasound decreases as the exposure time increases and the excessive sonication becomes detrimental to microalgae growth.

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Section: Resultsmentioning

confidence: 99%

The Influence of Ultrasound on the Growth of Nannochloris sp. in Modified Growth Medium

Vintilă

Vînătoru

Galan

et al. 2023

Life

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“…This microorganism is the major microalga found in the northern part of the Persian Gulf, Bushehr province (28.9234° N, 50.8203° E), Iran. The high photosynthetic efficiency of Chlorella and its rich oil content justify the research and development of the mass production and commercialization of this strain as a valuable source for biofuel production, especially biodiesel ( 35 , 36 ).…”

Section: Methodsmentioning

confidence: 99%

Performance Assessment of a Novel Pyramid Photobioreactor for Cultivation of Microalgae Using External and Internal Light Sources

Khoobkar

Shariati

Safekordi

et al. 2019

Food technol. biotechnol. (Online)

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The cultivation of Chlorella sp., the most abundant microalga in the Persian Gulf, took place in a novel pyramid photobioreactor (PBR), a modified version of plate PBR, consisting of four completely separate equal-volume chambers. In this study we used two light sources incident in each chamber: light-emitting diode (LED) at various wavelengths (red, white and blue) of 108 µmol/(m2·s) photosynthetic photon flux density as internal lighting, and the same photon flux density for external white lighting. PBR served to study the effects of light sources on chlorophyll a production, maximum specific growth rate (µmax), biomass productivity rate (rp) and photon performance. The results showed that the highest chlorophyll a production was obtained under red LED illumination. The highest values for rp, µmax and photon performance were obtained under white light.

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“…The microalgal growth media in this study was Bold's Basal Medium (BBM). Bold's Basal Medium contained nutrients, both macronutrients and micronutrients, which are needed by Chlorella DPK-01 to grow and to synthesize chemical compounds, such as lipid [9]. About 5,700 mL BBM was used to fill each PBR, 630 mL each.…”

Section: Preparation Of Growth Media and Cultivation Of The Microalgaementioning

confidence: 99%

Difference in Time of Audible Sound Exposure to Chlorella DPK-01 in Tubular Photobioreactors: A Strategy to Improve Photobioreactor System

Tambunan

Santoso

Soekirno

et al. 2021

ARFMTS

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The cultivation of Chlorella DPK-01 in tubular photobioreactors (PBRs) with difference in time of audible sound exposure was done. The study aims to evaluate the effect of difference in time of audible sound exposure in tubular PBRs to the growth and lipid percentage of microalgae Chlorella DPK-01. This study was using three groups of Chlorella DPK-01 PBRs. One group was control group and not exposed to any sound (Control-PBR), one group was exposed to audible sound in the light (PBR-A), and another group was exposed to audible sound in the dark (PBR-B). Each group consists of three units of PBR. The audible sound (279.9 Hz sine wave) was played in the light for PBR-A and in the dark for PBR-B. The observation period was 14 days. The growth rate of Chlorella DPK-01 was 47.6% per day (Control-PBR), 0.44 per day (PBR-A), and 0.55 per day (PBR-B) respectively. Meanwhile, the lipid percentage of Chlorella DPK-01 was 16% (Control-PBR), 31% (PBR-A), and 11% (PBR-B) respectively. Therefore, exposing audible sound in the light and in the dark may differently affect the growth and lipid production of Chlorella DPK-01.

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Enhancing Algal Growth by Stimulation with LED Lighting and Ultrasound

Cited by 18 publications

References 11 publications

The Influence of Ultrasound on the Growth of Nannochloris sp. in Modified Growth Medium

The Influence of Ultrasound on the Growth of Nannochloris sp. in Modified Growth Medium

Performance Assessment of a Novel Pyramid Photobioreactor for Cultivation of Microalgae Using External and Internal Light Sources

Difference in Time of Audible Sound Exposure to Chlorella DPK-01 in Tubular Photobioreactors: A Strategy to Improve Photobioreactor System

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