Toxicity test of effluents using algae, bacteria and fish bioassays: A review paper

College

Gokongwei College of Engineering

Department/Unit

Chemical Engineering

Document Type

Conference Proceeding

Source Title

ARRPET-DLSU 2nd National Workshop 2005

First Page

59

Last Page

71

Publication Date

2-18-2025

Abstract

Toxicity testing is a vital tool for assessing the ecological impact of effluent on receiving waters. In the absence of data on chemical composition or the insufficiency thereof, toxicity testing in the form of bioassays fills the knowledge gap on effluent toxicity. This paper reviews the various bioassays that have been developed and used to quantify the effect of toxicants) specifically in water matrices (aquatic media). Traditionally, aquatic toxicity testing had been done on several species of fish. The emphasis on most toxicity studies on effluents is now on the low-level food chain species such as bacteria and algae, the latter being primary producers in the food web. Requiring less amount of effluent, and hence generating less waste, these types of bioassays also circumvent ethical issues inherent to mammalian bioassays. One application of toxicity testing is on the assessment of the toxicity of the effluent coming from the UV-Peroxidation treatment of PCB-water mixtures. The success of treating the PCBs present in water media depends on whether subsequent by-products are less toxic than the parent pollutants or not.

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Disciplines

Environmental Sciences

Keywords

Toxicity testing; Polychlorinated biphenyls

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