Bio-mitigation of CO(2), calcite formation and simultaneous biodiesel precursors production using Chlorella sp

Bioresour Technol. 2010 Nov;101(21):8473-6. doi: 10.1016/j.biortech.2010.06.012. Epub 2010 Jul 1.

Abstract

In this study, an attempt was made to use micro-algal system for the production of biodiesel precursors and simultaneous CO(2) mitigation. Chlorella sp. was found to have a higher growth rate as compared to the other algal species tested namely Chlamydomonas sp. and Synnecococcus sp. At different CO(2) concentrations (0.03%, 3%, 10% and 15%), the lipid productivity was 23.0, 20.0 and 27.3mg/L/d respectively. Calcite produced was characterized using FT-IR, SEM and XRD. The FAME in crude biofuel was analyzed by GC-FID that found to contain palmitic acid (C16:0), docosapentaenoic acid (C22:5) and docosahexaenoic acid (C22:6). The calorific value of Chlorella sp. was found to be 29kJ/g which is higher than values reported for fresh water microalgae making it a potential candidate to be used as an alternate fuel.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biofuels*
  • Biomass
  • Bioreactors / microbiology
  • Calcium Carbonate / metabolism*
  • Carbon Dioxide / pharmacology*
  • Chlorella / drug effects*
  • Chlorella / growth & development
  • Chlorella / metabolism*
  • Chlorella / radiation effects
  • Chromatography, Gas
  • Esters / analysis
  • Light
  • Lipid Metabolism / drug effects
  • Microscopy, Electron, Scanning
  • Spectroscopy, Fourier Transform Infrared
  • X-Ray Diffraction

Substances

  • Biofuels
  • Esters
  • Carbon Dioxide
  • Calcium Carbonate