Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance upgrade on Thursday 4th of May 2017 from 8.00am to 9.00am (BST).

During this time our websites will be offline temporarily. If you have any questions please use the feedback button on this page. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 3, 2016
Previous Article Next Article

Energy efficient transfer of carbon dioxide from flue gases to microalgal systems

Author affiliations

Abstract

This article demonstrates a novel combination of solvent absorption, membrane desorption and microalgal cultivation to capture carbon dioxide and convert it to a lipid-rich biomass. In the system, carbon dioxide is absorbed into a potassium carbonate solvent and this gas is desorbed directly into the microalgal medium via a non-porous polydimethyl siloxane (PDMS) hollow fibre membrane. This single step approach provides a paradigm shift in the cost of carbon delivery to the microalgae, as the very large reboiler energy demand of standard carbon capture solvent regeneration is avoided, as is the energy associated with gas compression. Specifically, the use of a 20 wt% potassium carbonate solvent with 0.2, 0.5 and 0.7 CO2 loading was evaluated as a mechanism to deliver carbon dioxide to cultures of a salt tolerant Chlorella sp. microalgae. In all cases, accelerated growth of Chlorella sp. was observed, relative to a control. The use of carbonate solutions of 0.5 and 0.7 loading resulted in the highest volumetric productivity (0.38 g L−1 d−1) and biomass concentration (1.8 g L−1) by completely avoiding carbon limitation of the cultures. The system has demonstrated potential for the generation of biofuels that utilise carbon dioxide generated from power station flue gases with minimal parasitic energy demand.

Graphical abstract: Energy efficient transfer of carbon dioxide from flue gases to microalgal systems

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 30 Jun 2015, accepted on 06 Jan 2016 and first published on 06 Jan 2016


Article type: Paper
DOI: 10.1039/C5EE02005K
Citation: Energy Environ. Sci., 2016,9, 1074-1082
  •   Request permissions

    Energy efficient transfer of carbon dioxide from flue gases to microalgal systems

    Q. Zheng, G. J. O. Martin and S. E. Kentish, Energy Environ. Sci., 2016, 9, 1074
    DOI: 10.1039/C5EE02005K

Search articles by author