Wastewater inorganic N and P removal by immobilized Chlorella vulgaris

N. F.Y. Tam, P. S. Lau, Y. S. Wong

Research output: Contribution to journalConference articlepeer-review

59 Citations (Scopus)


The green alga, Chlorella vulgaris was immobilized in Ca-alginate beads at two stocking cell densities and grew in primarily treated domestic effluents. It was found that the cellular metabolic activities of this alga were retained after immobilization. The growth (in terms of cell counts) and photosynthetic rates of cells immobilized in beads of low stocking density were greater than those in beads of high density. Significant reduction of wastewater NH4 +-N and PO4 3--P was recorded especially in reactors containing algal beads of high density. These results suggested that immobilized Chlorella cells can be used as secondary treatment process for domestic sewage.

Original languageEnglish
Pages (from-to)369-374
Number of pages6
JournalWater Science and Technology
Issue number6
Publication statusPublished - 1994
Externally publishedYes
EventProceedings of the 17th Biennial Conference of the International Association on Water Quality. Part 1 - Budapest, Hung
Duration: 24 Jul 199430 Jul 1994


  • Alginate beads
  • Chlorella
  • Immobilized algae
  • Nitrogen
  • Phosphorus
  • Wastewater


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