publication . Article . 2009

Ecotoxicity tests using the green algae chlorella vulgaris — a useful tool in hazardous effluents management

Sónia Figueiredo; Sónia Figueiredo; Sónia Figueiredo; Maria Aurora Soares da Silva; Maria Aurora Soares da Silva; Cristina Delerue-Matos; Cristina Delerue-Matos; Maria Goreti Ferreira Sales; Maria Goreti Ferreira Sales;
Open Access English
  • Published: 01 Jan 2009
  • Publisher: Elsevier
  • Country: Portugal
Abstract
The treatment efficiency of laboratory wastewaters was evaluated and ecotoxicity tests with Chlorella vulgaris were performed on them to assess the safety of their environmental discharge. For chemical oxygen demand wastewaters, chromium (VI), mercury (II) and silver were efficiently removed by chemical treatments. A reduction of ecotoxicity was achieved; nevertheless, an EC50 (effective concentration that causes a 50% inhibition in the algae growth) of 1.5% (v/v) indicated still high level of ecotoxicity. For chloride determination wastewaters, an efficient reduction of chromium and silver was achieved after treatment. Regarding the reduction of ecotoxicity obs...
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Subjects
free text keywords: Chlorella vulgaris, Ecotoxicity, Environmental management, Laboratory wastewaters, Environmental Engineering, Waste Management and Disposal, Pollution, Health, Toxicology and Mutagenesis, Environmental Chemistry, Wastewater, Mercury (element), chemistry.chemical_element, chemistry, Waste management, Chemical oxygen demand, Effluent, Sewage treatment, Chloride, medicine.drug, medicine
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