біодеструкція

ОСОБЛИВОСТІ ОДЕРЖАННЯ І ВЛАСТИВОСТІ БІНАРНИХ СУМІШІВ ПОЛІЛАКТИДІВ. ОГЛЯД

Розглянуто  технологічні  особливості  одержання  біодеградабельних  бінарних  сумішей полілактиду  з  полігідроксибутиратом,  полікапролактоном,  термопластичним  крохмалем, полібутиленадипат-котерефталатом,  полібутиленсукцинатом,  полібутиленсукцинат-коаді- патом.  Виявлено  вплив  полімерних  додатків  на  фізико-механічні,  теплофізичні,  техноло- гічні  властивості  та  здатність  до  біодеградації  і  біосумсності  отриманих  матеріалів.

THEORETICAL SUBSTANTIATION OF THE PETROLEUM HYDROCARBONS DESTRUCTION BY SPECIFIC MICROFLORA USING ANAEROBIC DIGESTATE

Implementation of the proposed approach to bioremediation of oil-contaminated soils provides an intensification of the hydrocarbons degradation process biologically using a digestate as a bio-stimulant, contributes to the production of an ecologically safe substrate, and excludes its toxicity to living organisms due to the degradation of petroleum hydrocarbons.

Фотодеградація композиту на основі полістирол-TiO2/SiO2 під дією сонячного світла

Одержано і охарактеризовано фотодеградабельний каталізатор-композит ПС-TiO2/SiO2 та вивчено його деградацію під дією сонячного світла. Встановлено аморфну структуру TiO2/SiO2 з розміром частинок від 16,6 до 30,1 нм. Розраховано енергетичну зону каталізатора. Дослідження деградації проводили протягом 288 годин на двох зразках: суміші ПС з каталізатором (STD) і комбінації ПС-каталізатора з міськими відходами (MWR). Деградацію визначено в темряві та під дією сонячного світла. Встановлено, що відсоткова деградація зразків MWR є вищою у порівнянні з STD зразками.

SYSTEM APPROACH TO THE ASSESSMENT OF ANTHROPOGENIC IMPACT ON MARINE ECOSYSTEMS DURING OIL PRODUCTION ACTIVITIES

The system of quality categories, integrated and single indicators was created for the marine ecosystem under the impact of oil production. On the basis of the integral differential approach, a significant and moderate degree of influence has been substantiated for the stages of drilling the well and extracting oil, as well as an insignificant impact for seismic exploration and decommissioning.

Biodegradation of oil products in polluted soil by using the mixture of the polymer complex [chotisan–lactoserum protein]–active silt

Biodegradation processes of oil products in the polluted soil were studied by using the mixture of the polymer complex [chitosan – lactoserum protein]–active silt. It is shown that all these processes take place due to the synergism of the components which form part of the mixture; the use of the developed biomixture ensures the effective biodegradation of compound oil hydrocarbons, a high degree of cleaning soil from pollutions, except the possible secondary pollution of environment.

Biodegradable Polymers for Food Packing – Factors Influencing their Degradation and Certification Types – a Comprehensive Review

In this paper an overview of novel biodegradable polymers for food packaging is presented. The aim was to present factors influencing polymer degradation and biodegradation in various environments. It was noted that biodegradable polymers are an imperfect alternative for classical polymers and their decomposition strongly depends on degradation environment. It was also shown that there are various approaches in different countries to certification of biodegradable polymer materials, which rather complicates its application than promotes it.

The Characterization of Novel Biodegradable Blends Based on Polyhydroxybutyrate

the water transport and morphology (TEM data) shows the impact of polymer component ratio on the regulating water flux in a hydrophobic matrix. To elucidate the role of hydrophilicity of the second component presented in the PHB blends, we studied the PHB/PA blends where PA is the polyamide resin composed of statistical copolymer of hexamethyleneadipinate and ε-caprolactam in the ratio of 1:1. The complex of techniques including DCS and FTIR-imaging (for T-scale) demonstrates the interaction between PHB and PA in the temperature ranges of crystallization and melting.

Biodegradation of Polymeric Material and Adhesive Properties of Cells of Microorganisms

The chemical composition of cell membranes of microscopic fungi destroying polymeric materials is analyzed. The concentrations of the major chemical components – phospholipids, glycans, and amines – in nine types of fungi are estimated. The measured ratios of these components provide an estimate of the hydrophobic properties of conidia, controlling microorganism adhesion to polymer surface and subsequent degradation of polymeric materials.

Stabilization of Polymers from the Influence of Biological Media. Kinetic Method of Biocide Efficiency Estimation

In this paper the contributors show the value of application of kinetic methods for the estimation of biocide activity. The authors have developed methods of quantitative estimation of biocide efficiency independent of its solubility in water. It is found that inhibited kinetics of microscopic fungal growth on nutriments with biocides is described by a logistic equation. They suggest parameters for the characterization of biocide efficiency.