A study on the growth response of green algae Chlorella vulgaris in both indoor and outdoor conditions using continuous externally- illuminated vertical-column draft-tube photobioreactor

Date

10-2010

Degree

Bachelor of Science in Chemical Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

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Abstract

Continuous propagation of green algae Chlorella vulgaris using an externally-illuminated vertical-column draft-tube photobioreactor designed and fabricated by Redondo (2009) was undertaken. The continuous system of the photobioreactor was improved by installing a more efficient storage container for the sterilized media that can regulate low feed rate. A linear relationship between optical density of the microalgal culture at 425nm and cell dry weight generated by Jao (2010)was used for the experiment. Chemostat cultivation was utilized to study steady-state culture characteristics of Chlorella vulgaris for both indoor and outdoor propagation. During indoor propagation, biomass concentrations were expected to stabilize at 0.962535g/L, 1.286406g/L and 2.5721g/L for dilution rates of 0.2709 day⁻¹, 0.2027 day⁻¹ and 0.1014 dat ⁻¹, respectively. However, concentrations of Chlorella vulgaris in the harvest point were set off on the average of 1.1945468g/L for 2.86mL/min feed rate and 1.602834375g/L for 2.14mL/min feed rate. For outdoor propagation, an approximate steady state biomass concentration of 2.2439g/L was attained using a single feed rate of 2.14mL/min.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993.5 2010 E62 M67

Document Type

Thesis

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