Toxicity test of landfill leachate using Sarotherodon mossambicus (freshwater fish)

Ming Hung WONG*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

39 Citations (Scopus)


Landfill leachate was collected in March and July, 1984, at the Gin Drinkers' Bay Landfill Site, and the properties of the two leachates were examined. The leachate collected in March contained higher contents of total solid, ammonia, and metals than that collected in July. The leachates were treated with EDTA (10-3 M) and Al2(SO4)3 (2 and 4 g/liter), alone and in combination. Addition of alum (2 g/liter) removed more than 60% of the phosphate content of the two leachates, and about 20 and 68% of total solid from leachates collected in March and July, respectively. Different concentrations of the leachates (untreated and alum-treated) were used to test the survival of tilapia, Sarotherodon mossambicus. The 96-hr LC50 for untreated leachates of March and July were 1.4 and 12%, respectively. The alum-treated leachates raised the 96-hr LC50 to 2.2 and 31.4%, accordingly.

Original languageEnglish
Pages (from-to)149-156
Number of pages8
JournalEcotoxicology and Environmental Safety
Issue number2
Publication statusPublished - Apr 1989

Scopus Subject Areas

  • Pollution
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis


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