Production of biodiesel by a naturally isolated strain of Chlorella vulgaris in bubble-column photobioreactor

2010 ◽  
Vol 150 ◽  
pp. 371-371 ◽  
Author(s):  
Nima Montazeri Najafabady ◽  
Sara Rasoul-Amini ◽  
Younes Ghasemi
Keyword(s):  
Chlorella Vulgaris ◽  
Bubble Column ◽  
Bubble Column Photobioreactor

Influence of Carbon Dioxide Concentration on Microalgal Growth in a Bubble Column Photobioreactor

2012 ◽  
Vol 599 ◽  
pp. 137-140 ◽  
Author(s):  
Shu Wen Li ◽  
Sheng Jun Luo ◽  
Rong Bo Guo
Keyword(s):  
Carbon Dioxide ◽  
Global Warming ◽  
Chlorella Vulgaris ◽  
Co2 Sequestration ◽  
High Efficiency ◽  
Bubble Column ◽  
Carbon Dioxide Concentration ◽  
Co2 Concentration ◽  
Dry Biomass ◽  
Bubble Column Photobioreactor

The CO2 sequestration by microalgae is thought to be one of the most sustainable strategies to relieve global warming. To produce 1 ton of microalgal dry biomass, 2 ton of CO2 is required. However, insufficient supply of CO2 will limit microalgal growth, and excessive CO2 both means wasting and inhibits microalgal growth. In the present study, the dissolved CO2 concentration in culture limiting and inhibiting microalgal growth (Chlorella vulgaris) in a bubble column photobioreactor was studied. The experimental results showed that the dissolved CO2 concentration ranging from 107μmol/L to 1500 μmol/L could meet microalgal growth’s need, which provides the guidance for microalgal CO2 biofixation with high efficiency.

scholarly journals Peningkatan produksi biomassa Chlorella vuldaris melalui perlakuan teknik pemerangkapan sel dalam aliran sirkulasi media kultur

2018 ◽  
Vol 8 (3) ◽  
pp. 87
Author(s):  
D Dianursanti ◽  
Rachma Nuzulliany ◽  
Anondho Wijanarko ◽  
M Nasikin
Keyword(s):  
Chlorella Vulgaris ◽  
Bubble Column ◽  
Dry Weight ◽  
Food Supplement ◽  
Continuous Illumination ◽  
Lighting Condition ◽  
Lighting Intensity ◽  
Cultivation Process ◽  
Bubble Column Photobioreactor ◽  
Filtration Technique

Recently, Chlorella vulgaris is widely studied by experts for its ability as a food supplement and health.  Cultivation of Chlorella vulgaris can be used as a tool to reduce global warming. Chlorella vulgaris can efficiently reduce CO2 because they can grow quickly and easily adapted into the photobioreactor system engineering. This research uses continuous illumination of 5000 lux. However, this lighting condition has limitations because of the intensity given is always constant while the number of Chlorella vulgaris in culture increased. Therefore, one solution to solve it is by using the entrapment of cell or filtration process. Chlorella vulgaris cultivation process carried out in bubble column photobioreactor medium flowed by air containing 5% CO2 with a flow rate of 15.66 m / hr. The process of Chlorella vulgaris cultivation with filtration technique has successfully increased production of biomass up to 1.03 times compared with continuous lighting without filtration with the same amount of inoculum. The final result of dry weight biomass obtained was 0.00756 g/dm3 with shorter cultivation period, 200 hours.  Keywords: filtration, Chlorella vulgaris., constant lighting intensity, bubble column photobioreactor, CO2 fixation.AbstrakBelakangan ini, Chlorella vulgaris diminati oleh para ahli untuk diteliti karena kemampuannya sebagai penghasil biomassa yang bermanfaat sebagai suplemen makanan dan kesehatan. Dalam proses pembudidayaannya, Chlorella vulgaris ini dapat dimanfaatkan sebagai pereduksi pemanasan global. Chlorella vulgaris dapat dengan efisien mereduksi CO2 karena mereka dapat tumbuh dengan cepat dan mudah diadaptasikan ke dalam rekayasa sistem fotobioreaktor. Pencahayaan yang diberlakukan pada penelitian ini adalah pencahayaan kontinu dengan intensitas 5000 lux. Namun, pencahayaan ini memiliki keterbatasan karena intensitas yang diberikan selalu konstan padahal jumlah Chlorella vulgaris dalam kultur semakin meningkat. Oleh sebab itu, salah satu upaya yang dapat dilakukan untuk mengatasinya adalah dengan menggunakan proses pemerangkapan sel atau  filtrasi. Proses Kultivasi Chlorella vulgaris dilakukan dalam fotobioreaktor kolom gelembung skala menengah yang dialiri oleh udara yang mengandung 5% CO2 dengan laju alir sebesar 15,66 m/jam. Proses filtrasi untuk kultivasi Chlorella vulgaris berhasil meningkatkan produksi biomassanya hingga 1,03 kali lipat dibandingkan dengan pencahayaan kontinu tanpa filtrasi dengan jumlah inokulum yang sama. Hasil akhir produksi biomassa adalah 0,00756 g/dm3 dengan masa kultivasi yang lebih singkat yaitu selama 200 jam.Keywords: filtrasi, Chlorella vulgaris., pencahayaan kontinu, fotobioreaktor kolom gelembung, fiksasi CO2.

Effects of light illumination alteration on Chlorella vulgaris Buitenzorg's CO2 fixation in bubble column photobioreactor

2006 ◽  
Vol 8 (1) ◽  
pp. 53-60 ◽  
Author(s):  
Anondho Wijanarko ◽  
Dianursanti ◽  
Heidi ◽  
Roekmijati Widaningroem Soemantojo ◽  
Kazuhisa Ohtaguchi
Keyword(s):  
Chlorella Vulgaris ◽  
Co2 Fixation ◽  
Bubble Column ◽  
Light Illumination ◽  
Bubble Column Photobioreactor

scholarly journals Combined Production of Astaxanthin and β-Carotene in a New Strain of the Microalga Bracteacoccus aggregatus BM5/15 (IPPAS C-2045) Cultivated in Photobioreactor

Biology ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 643
Author(s):  
Konstantin Chekanov ◽  
Daniil Litvinov ◽  
Tatiana Fedorenko ◽  
Olga Chivkunova ◽  
Elena Lobakova
Keyword(s):  
Bubble Column ◽  
Biomass Accumulation ◽  
Natural Antioxidants ◽  
Gas Chromatography Mass Spectrometry ◽  
Stage Scheme ◽  
Green Microalga ◽  
Animal Feeding ◽  
Carotenoid Synthesis ◽  
Bubble Column Photobioreactor ◽  
Β Carotene

Carotenoids astaxanthin and β-carotene are widely used natural antioxidants. They are key components of functional food, cosmetics, drugs and animal feeding. They hold leader positions on the world carotenoid market. In current work, we characterize the new strain of the green microalga Bracteacoccus aggregatus BM5/15 and propose the method of its culturing in a bubble-column photobioreactor for simultaneous production of astaxanthin and β-carotene. Culture was monitored by light microscopy and pigment kinetics. Fatty acid profile was evaluated by tandem gas-chromatography–mass spectrometry. Pigments were obtained by the classical two-stage scheme of autotrophic cultivation. At the first, vegetative, stage biomass accumulation occurred. Maximum specific growth rate and culture productivity at this stage were 100–200 mg∙L−1∙day−1, and 0.33 day−1, respectively. At the second, inductive, stage carotenoid synthesis was promoted. Maximal carotenoid fraction in the biomass was 2.2–2.4%. Based on chromatography data, astaxanthin and β-carotene constituted 48 and 13% of total carotenoid mass, respectively. Possible pathways of astaxanthin synthesis are proposed based on carotenoid composition. Collectively, a new strain B. aggregatus BM5/15 is a potential biotechnological source of two natural antioxidants, astaxanthin and β-carotene. The results give the rise for further works on optimization of B. aggregatus cultivation on an industrial scale.

High efficiency production of astaxanthin by autotrophic cultivation of Haematococcus pluvialis in a bubble column photobioreactor

2008 ◽  
Vol 39 (3) ◽  
pp. 575-580 ◽  
Author(s):  
Reza Ranjbar ◽  
Ryota Inoue ◽  
Hironori Shiraishi ◽  
Tomohisa Katsuda ◽  
Shigeo Katoh
Keyword(s):  
High Efficiency ◽  
Haematococcus Pluvialis ◽  
Bubble Column ◽  
Bubble Column Photobioreactor
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