Biomass Production and Synthesis of Biodiesel from Microalgae Synechococcus HS-9 (Cyanobacteria) Cultivated Using Bubble Column Photobioreactors

The generation of syngas via gasification is accompanied by greenhouse gas emissions and certain impurities like tar. This is the major problem that makes the technology unattractive for commercialisation. Tar content present in the syngas limits its application as it causes damage to engines, while the CO2 that accompanies it adds to the climate issues when released to the atmosphere. In this short review, an overview of techniques used for tar abatement, CO2 capturing, and potential areas of CO2 utilisation were discussed.

Section: Biomass Gasificationmentioning

confidence: 99%

An Outlook on Tar Abatement, Carbon Capture and its Utilization for a Clean Gasification Process

Umar¹,

Sulaiman²,

Majid³

et al. 2021

“…A recent study showed that Synechococcus had been harvested in a tubular photobioreactor showing potential for biomass product because of it relatively rapid growth 7) . Moreover in 2020, Arif has found a high saturated fatty acids content in Synechococcus HS-9 8) . Inside microalgae photobioreactors, microalgae will do photosynthesis as in the microalgae habitat.…”

Section: Introductionmentioning

confidence: 99%

Effect of Bubble Size on the Growth of Synechococcus HS-9 Microalgae with Double Loop Fluid Oscillator

Rizaldi¹,

Rahman²,

Prihantini³

et al. 2021

Self Cite

The capacity of fossil fuel production is decreasing through the years. Energy diversification is needed to solve this problem. Microalgae is one type of microorganism that has the potential as an alternative fuel. Large scale microalgae cultivation utilizes photobioreactors with aeration of microbubbles. One method to produce smaller bubbles uses a fluid oscillator. This study aims to analyze if there is any effect of the bubble size difference on Synechococcus HS-9 growth. Bubble formation utilizes a double loop fluid oscillator and continuous flow. Bubble size data is taken using a high-speed camera at 6 lpm and 10 µm micro porous shafts and processed through image processing using imageJ application. Synechococcus HS-9 growth data is taken daily optical density by using spectrophotometer. The result showed double loop fluid oscillator produces smaller bubbles than the conventional bubble aeration, thus affects a higher growth of Synechoccus HS-9. Synechococcus HS-9 growth is higher in oscillating flow conditions than in continuous flow.

“…This is because they can produce lipids properly. Examples of potential cyanobacteria are genus Synechococcus 4) and the genus Leptolyngbia 5) .…”

Section: Introductionmentioning

confidence: 99%

Analysis of Carbon Dioxide Solubility Increasement Caused by Baffle Diameter Variation in Airlift Photobioreactor to Growth Rate of Synechococcus HS-9 Biomass

Ardiansyah¹,

Nasruddin²,

Sjamsuridzal³

et al. 2021

Photobioreactor (PBR) have been one of the most popular system that used for multiplying microalgal biomass. Many researches have been conducted to develop photobioreactor that suit the most with prominent microalgae strains. Carbon dioxide supply is one of many sectors that play an important role for growing microalgae. Carbon dioxide are used by the microalgal cells to produce many chemical compounds that support growth. In many cases, carbon dioxide must be solved into growth media to be utilized by the cells. This research focused on analyzing the effect of carbon dioxide solubility increasement caused by variation of baffle in airlift photobioreactor (APBR) to growth rate of Synechococcus HS-9 biomass. Twenty-one day of experiment resulting that there are growth rate differences occurs. The highest growth rate occurs in APBR-A, APBR-B, and control PBR are 0.515, 0.463, and 0.738 respectively. Despite of the maximum growth rate occurred, there are fluctuation of growth rate happen during experiment. Carbon dioxide solubility test then conducted to see effect of baffle variation. The best carbon dioxide solubility occurred in APBR-B with 23 mg/L, then followed by APBR-A with 22 mg/L, and control PBR with 20 mg/L after 24 hours of treatment. Further analysis resulting that there is no strong correlation between carbon dioxide solubility increasement to growth rate of Synechococcus HS-9 biomass. This occurred due degression of acidity value (pH) caused by excess of carbonic acid formed by carbon dioxides who diluted into growth media.