title: Environmental hazard assessment of cheese manufacturing effluent treated for hydrogen production.
abstract: Toxicity of effluents after treatment in an anaerobic fermentation system for hydrogen production is evaluated with three biotests: The zebrafish Danio rerio embryo test, the Thamnotoxkit F and the Daphtoxkit F(TM) magna. Samples were classified from "very" to "extremely toxic". Average toxicity values for zebrafish were 1.55% (24 h) and 0.75% (48 h), for Thamnocephalus 0.69% (24 h) and for Daphnia 2.51% (24 h) and 1.82% (48 h). Statistical analysis between physicochemical parameters and LC(50) values revealed that PO(4)(-3), SO(4)(-2), NH(3)N and NO(3)(-) have the major contribution to toxicity. Based on results, this treatment is considered an environmentally ineffective way of managing the specific wastes.
authors.affiliation: Department of Biology, Section of Animal Biology, Unit of Environmental Management, Pollution and Ecotoxicology, University of Patras, Rio, Patras, 26500, Greece.
authors.forename: Constantina
authors.initials: C
authors.lastname: Karadima
authors.forename: Chris
authors.initials: C
authors.lastname: Theodoropoulos
authors.forename: Joan
authors.initials: J
authors.lastname: Iliopoulou-Georgudaki