Determination of phytotoxicity of wastes of mechanical processing of polymer mixtures with their mechanical activation
- 15 February 2021
- journal article
- Published by National University of Life and Environmental Sciences of Ukraine in Biological Systems: Theory and Innovation
Abstract
Biotesting to assess the complex relationships between soil, contaminants and living organisms and to determine the impact on ecosystems of pollutants whose concentrations may be beyond the sensitivity of the methods of determination and the composition of which cannot be determined. The aim is to establish the level of phytoxicity of wastes of mechanical processing of polymer mixtures, which are extracted from solid household waste with the help of indicator plants. Methods. Evaluation of phytotoxic effects was performed by vegetation methods according to ISO: 17402-2008, 17126-2005a, 11269-1: 2012a, 11269-2: 2012b. Contamination levels of the test samples were assessed according to ISO 16198.Objects of research: watercress seeds, mustard, wheat, corn, soybeans, barley and sludge from the processing of polymer mixtures composed of polymer particles of different composition and quantity, along with the remnants of paper labels. Studies of the content of heavy metals (Pb, Cu, Cd, Zn, Ni) were performed by atomic absorption method on a spectrophotometer type CAS-120.1 in accordance with generally accepted methods. Results. The studied sludge does not negatively affect the process of germination of watercress, mustard, corn. The level of phytotoxic effect of sludge on the germination of soybeans and barley was within acceptable limits and did not exceed 3.33%. The study of migration of heavy metals present in the sludge and their accumulation during the growth and development of plants showed their insignificant content regardless of the sludge content. Only the lead content was higher than in the control 2.13 times and 1.83 times higher than in "relatively clean soil". Conclusions. Determination of phytotoxicity of this type of sludge on the process of germination and vegetation changes of plants should be carried out on the most sensitive crops - watercress and mustard. A study of the migration of heavy metals present in the sludge and their accumulation during plant growth showed the presence of bound forms of heavy metals copper, nickel, cadmium and zinc - the migration of which has not been established. However, mobile forms of lead that migrate from the sludge and accumulate in plants have been identified.Keywords
This publication has 6 references indexed in Scilit:
- Persistent organic and inorganic pollutants in the effluents from the textile dyeing industries: Ecotoxicology appraisal via a battery of biotestsEnvironmental Research, 2021
- The Toxicological Testing and Thermal
Decomposition of Drive and Transport Belts Made
of Thermoplastic Multilayer Polymer MaterialsPolymers, 2020
- Polymers Used in US Household Cleaning Products: Assessment of Data Availability for Ecological Risk AssessmentIntegrated Environmental Assessment and Management, 2019
- A critical review of the application of polymer of low concern and regulatory criteria to fluoropolymersIntegrated Environmental Assessment and Management, 2018
- Toxicology - New Aspects to This Scientific ConundrumPublished by IntechOpen ,2016
- Toxic Combustion Product Yields as a Function of Equivalence Ratio and Flame Retardants in Under-Ventilated Fires: Bench-Large-Scale ComparisonsPolymers, 2016