Ferrofluid-assisted rapid and directional harvesting of marine microalgal Chlorella sp. used for biodiesel production

Shih Hsin Ho*, Sheng Yi Chiu, Chien Ya Kao, Tsai Yu Chen, Yu Bin Chang, Jo Shu Chang, Chih-Sheng Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

In this work, a novel harvesting strategy using ferrofluids coupled with flocculation as a magnetic directional harvesting system was developed, providing a fast and easy way to effectively collect microalgae with no further modifications made to the ferrofluids. With a ferrofluid dosage of 25 mg L−1, a high harvesting efficiency of 95–100% was achieved within 1 min. In addition, we successfully performed a wastewater recycling strategy coupled with a microalgal ferrofluid-harvesting dynamic flow-through system to harvest biomass of Chlorella sp. MTF-7 which could achieve over 80% of the maximum level after three repeated recycling cultivations. This work demonstrated the use of an integrated microalgal ferrofluid-harvesting dynamic flow-through system to develop a simple and effective strategy to enhance microalgal harvesting efficiency, along with wastewater recycling, in a marine microalgal Chlorella sp. MTF-7.

Original languageEnglish
Pages (from-to)1337-1340
Number of pages4
JournalBioresource Technology
Volume244
DOIs
StatePublished - 1 Jan 2017

Keywords

  • Chlorella sp.
  • Ferrofluids
  • Flow-through system
  • Microalgal harvesting
  • Wastewater recycling

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