||Evaluation of Toxicity Test Procedure for Screening Treatability Potential of Waste in Soil.
Matthews, J. E. ;
Hastings, L. ;
||Robert S. Kerr Environmental Research Lab., Ada, OK. ;Utah Water Research Lab., Logan.
Loading rate ;
Organic wastes ;
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A toxicity procedure has been developed and proposed for use in establishing acceptable initial loading rates and detoxification potentials for hazardous industrial waste when combined with soil. Screening test results are used to establish a range of loading rates acceptable for use in subsequent treatability studies. Toxicity reduction experimental results are used to determine soil detoxification potentials over time. Experiments were conducted concurrently by two laboratories using aliquots from the same soil and waste samples. Comparability of results was reported to be a function of the similiarity of waste sample aliquots used. Toxicity screening results for uniform technical grade creosote aliquots were highly comparable between the two laboratories; results for highly variable creosote waste aliquots were much less comparable. Toxicity reducton experimental results for the creosote waste also indicated significant variation between laboratories for Day 0 samples; however, the same patterns of detoxification over time were observed by each laboratory with toxicity results for Day 42 being similar. (Copyright (c) 1987 John Wiley and Sons.)