Development of large-scale and economic pH control system for outdoor cultivation of microalgae Haematococcus pluvialis using industrial flue gas

Yoon Young Choi, Jae Min Joun, Jeewon Lee, Min Eui Hong, Hoang Minh Pham, Won Seok Chang, Sang Jun Sim

Research output: Contribution to journalArticlepeer-review

80 Citations (Scopus)

Abstract

The aim of this study was to develop the economic and effective buffer system for microalgae mass cultivation using industrial flue gas. Due to the continuous flue gas supplement, culture media acidified, therefore cell growth inhibited. Although buffering agent was added, this result increase in cost for overall culture process. Therefore combined buffer system of bicarbonate and phosphate (BP) for large-scale use was investigated. The bicarbonate buffer system generated from CO2 dissolution, additionally phosphate buffer system improves the buffer performance under the continuous CO2 supplementation from flue gas. The microalgae Haematococcus pluvialis was cultivated under autotrophic outdoor conditions using these buffer solutions. As a result, the autotrophic BP buffer system enhanced the biomass and astaxanthin productivity of H. pluvialis to 105% and 103%, respectively. The results confirm that the BP buffer system reduces the cost of microalgal CO2 conversion process, particularly for the outdoor mass cultivation.

Original languageEnglish
Pages (from-to)1235-1244
Number of pages10
JournalBioresource technology
Volume244
DOIs
Publication statusPublished - 2017

Bibliographical note

Funding Information:
This work was supported by the Korea Institute of Energy Technology Evaluation and Planning and Ministry of Trade, Industry and Energy as part of the “ Energy Efficiency and Resources Technology R&D ” project Korea [grant number 20152010201900 ]; the National Research Foundation of Korea (NRF) [grant number NRF- 2016R1A2A1A05005465/2010-0027955/2015R1A2A1A05001861 ]; and the Korea CCS R&D Center of the NRF funded by the Ministry of Science, ICT , and Future Planning of Korea grant [grant number 2014M1A8A1049278 ].

Keywords

  • Astaxanthin
  • Autotrophic buffer system
  • Flue gas
  • Haematococcus pluvialis
  • Polymeric thin-film photobioreactor

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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