A Battery of Toxicity Tests as Indicators of Decontamination in Composting Oily Waste

Juvonen, Risto O.; Martikainen, Esko; Schultz, Eija; Joutti, Anneli; Ahtiainen, Jukka; Lehtokari, Markku

doi:10.1006/eesa.2000.1943

Cited by 100 publications

(37 citation statements)

References 33 publications

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“…However, more and more reports have shown that physicochemical analysis alone cannot sufficiently and effectively evaluate the safety of environmental water samples, because it is impossible to account for all of the chemicals, and to reflect the synergistic or antagonistic interactive effects of multiple chemicals co-existing in environmental elements Juvonen et al, 2000). Fortunately, biological toxicity tests, which are useful tools for integrating the effects of all the bioavailable contaminants and of their interactions, are widely used not only to evaluate the safety of single and multiple chemicals, but also of environmental samples (Hernando et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Toxicity-based assessment of the treatment performance of wastewater treatment and reclamation processes

Wei

Tan

2012

Journal of Environmental Sciences

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The reclamation and reuse of wastewater is one of the possible ways to relieve the serious fresh water resource crisis in China. Efficient reclamation treatment technologies ensure the safe reuse of reclaimed water. In order to screen out and evaluate technologies appropriate for reclamation treatment, a great deal of efforts have been brought to bear. In the present study, a toxicity-based method including a Photobacterium phosphoreum test for acute toxicity and SOS/umu test for genotoxicity, accompanied by the traditional physicochemical parameters DOC (dissolved organic carbon) and UV 254 (absorbance at 254 nm), was used to measure the treatment performance of different reclamation processes, including the anaerobic-anoxic-oxic biological process (A 2 O) and subsequent physical/chemical reclamation processes (ultrafiltration, ozonation, chlorination). It was found that for the secondary effluent after the A 2 O process, both the toxicity and physicochemical indices had greatly decreased compared with those of the influent. However, chemical reclamation processes such as ozonation and chlorination could possibly raise toxicity levels again. Fortunately, the toxicity elevation could be avoided by optimizing the ozone dosage and using activated carbon after ozonation. It was noted that by increasing the ozone dosage to 10 mg/L and employing activated carbon with more than 10 min hydraulic retention time, toxicity elevation was controlled. Furthermore, it was shown that pre-ozonation before activated carbon and chlorination played an important role in removing organic compounds and reducing the toxicity formation potential. The toxicity test could serve as a valuable tool to evaluate the performance of reclamation processes.

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Section: Introductionmentioning

confidence: 99%

Toxicity-based assessment of the treatment performance of wastewater treatment and reclamation processes

Wei

Tan

2012

Journal of Environmental Sciences

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“…They contain cryptobiotic forms of bioindicators from the standard culture. They can be stored for a long time and, if necessary, in a short time prepared for the test allowing for determining their total toxicity of all hazardous substances, and in many cases acting synergistically [97]. In the case of bioindication, the essence is to assess the general toxicity of the tested system, no matter which compound is toxic.…”

Section: Methods Of Effectiveness Evaluation Of the Bioremediation Prmentioning

confidence: 99%

The ways to increase efficiency of soil bioremediation

Wołejko

Wydro

Loboda

2016

Ecological Chemistry and Engineering S

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Abstract:The aim of this paper was to present possibilities of using different substrates to assist the bioremediation of soils contaminated with heavy metals, pesticides and other substances. Today's bioengineering offers many solutions that enable the effective conduct of biological remediation, including both biostimulation and bioaugmentation. For this purpose, they are used to enrich various organic substances, sorbents, microbiological and enzymatic preparations, chemical substances of natural origin or nanoparticles. The use of genetic engineering as a tool to obtain microorganisms and plants capable of efficient degradation of pollutants may cause the risks that entails the introduction of transgenic plants and microorganisms into the environment. In order to determine the efficacy and possible effects of the various bioremediation techniques, it is required to conduct many studies and projects on a larger scale than only in the laboratory. Furthermore, it should be emphasized that bioremediation involves interdisciplinary issues and therefore, there is a need to combine knowledge from different disciplines, such as: microbiology, biochemistry, ecology, environmental engineering and process engineering.

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“…Since the concentration limits involved in water quality criteria cannot cover all chemicals in ambient water matrix, the concentration analysis alone cannot sufficiently evaluate the safety of water sample. Moreover, synergistic or antagonistic interactive effects among the co-existing multiple chemicals in ambient water could not be ignored (Juvonen et al, 2000). Therefore, to some extent, it is insufficient to guarantee water quality using conventional water quality criteria.…”

Section: Introductionmentioning

confidence: 99%

A toxicity-based method for evaluating safety of reclaimed water for environmental reuses

Zhao

Wei

et al. 2014

Journal of Environmental Sciences

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A Battery of Toxicity Tests as Indicators of Decontamination in Composting Oily Waste

Cited by 100 publications

References 33 publications

Toxicity-based assessment of the treatment performance of wastewater treatment and reclamation processes

Toxicity-based assessment of the treatment performance of wastewater treatment and reclamation processes

The ways to increase efficiency of soil bioremediation

A toxicity-based method for evaluating safety of reclaimed water for environmental reuses

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