Metal removal studied by a laboratory scale immobilized microalgal reactor

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)474-478
Journal / PublicationJournal of Environmental Sciences
Volume10
Issue number4
Publication statusPublished - Dec 1998

Abstract

A laboratory scale algal column reactor packed with 75 ml alginate-algal beads was used to treat 30 mg/L Cu and Ni with a HRT of 30 minutes. At the end of loading 4L metal solution, over 97% of Cu and 91% of Ni were removed from the wastewater with a final residual of 1.76 mg/L Cu and 8.8 mg/L Ni. Up-flow was preferred to down-flow in maintaining a constant flow rate and hence HRT. Amount of metal recovered during regeneration depended on concentration and nature of regenerant used. Dilute acid was a better regenerant than calcium in terms of metal recovered (90%) and volume needed for regeneration. The consistency in the metal removal performance by the algal column over 10 metal treatment and regeneration cycles suggested that the algal beads can treat Cu or Ni bearing wastewater over 400 times its own volume.

Research Area(s)

  • Immobilized microalgal reactor, Industrial wastewater treatment, Metal

Citation Format(s)

Metal removal studied by a laboratory scale immobilized microalgal reactor. / Arthur, Lau; Yuk-Shan, Wong; Zhang, Tong; Tam, Nora F. Y.

In: Journal of Environmental Sciences, Vol. 10, No. 4, 12.1998, p. 474-478.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal