ENGINEERING SOLUTIONS
Paper presents the results of research of a two-stage thermal conversion process of wood biomass into the synthesis gas. The process combines pyrolysis and a high-temperature cracking of volatiles. Two modules of a pilot plant with capacity of 1.7 and 6.0 kg of feedstock per hour were tested. The dependence of the chemical composition of the synthesis gas from the plant's capacity is shown. Synthesis gas obtained during the experiments contained no tars and contained not less than 90 % of a mixture of hydrogen (H2) and carbon monoxide (CO) with a ratio of H2:CO equal to 0.98 and 1.23 respectively. Such gas are suitable for use as fuel for autonomous power systems based on gas turbines or gas-engines. It is also suitable for the synthesis of methanol and dimethyl ether with a bilayer loading of methanol catalyst and γ-Al2O3.
As a result of experimental work there is concluded that waste materials (230 t of sand contaminated with polyvinyl alcohol, 8 t of various highstrength fibrous materials and about 8 t of waste binders) may be unified in various structures. Hot pressing in closed volume is considered to be the main recovery method. The received sand-polymer and fibrous composite materials of chaotic structure show satisfactory physicalmechanical properties. For test samples there are used wastes of manufacture. Preparation of sand-polymer mixture and samples molding are made manually, polymerization is carried out in a thermostat. Compression strength is considered as the most significant mechanical parameter, particularly, for such materials as traditional concrete, polymer concrete. There is revealed that the most feasible application of waste materials (during manufacturing process of polymer composite cases) lies in the sphere of housing and communal services, particularly for manufacture of paving tile, roof tile, speed bump, sewerage walls and covers for them.
There was considered the use of efficient design of storage container for transportation and storage of liquid materials on the basis of coating materials (CM). providing increased environmental safety of production. There was described the storage container design, specifications and storage conditions. There was presented calculation of avoided environmental damage as a result of tiered storage containers for transportation, storage and sale of recyclable waste of CM.
SCIENTIFIC DEVELOPMENTS
There was demonstrated that using that by heat treatment sapropel under air temperature 300 – 350 °C can be obtained bifunctional sorbent capable of removing organic substances and metal ions from aqueous solutions. Sorbent capacity for copper ions is 29,3 ± 2,1 mg/g, for petroleum derivatives – 33,1 ± 2,7 mg/g. There was found that modifying polyhexamethylenguanimidin and humic acids allows expanding possibilities and improving the sorption capacity characteristics of carbon-mineral sorbent.
There was considered the possibility of use the catalase activity as marker pattern and intensity of biological processes in soils in terms of oil pollution. There was showed that dependence of catalase activity on concentration of oil products is dual in nature, testifying the good information content of this indicator and its potential use in evaluating og oil-contaminated soils and environmental regulation. There was revealed a significant change in the activity of catalase (p<0.05) in spodozols with oil contamination level of 10 g/kg, in peat-spodozols humus-illuvial – 20 g/kg, the differences in the set values due to sorption properties of soils. When establishing the permissible content of oil products in spodozols applied non-linear regression model described by a logistic curve.
The literature data of the performance properties and ecological features of deep hydro treated diesel fuels of the last years have been analyzed. The main characteristics of the antioxidant and anti-wear additives to modern hydro treated diesel fuel with low and ultra-low sulfur content have been considered. The special attention is given to additives based on synthetic and natural high-molecular compounds for environmentally friendly diesel fuels that meet European norms and quality standards.
There were presented study findings of soil remediation of coal dump with the use of peat preparations. In a field experiment was investigated enzymatic activity of soil, examined processes of accumulation and transformation of organic matter on the surface of the coal dump for growing grass for 6 growing seasons. There was established that adding peat preparations into rock refuse soil leads to an increase of the biological component role in the process of technopedogenesis that enhances enzymatic activity. The result is activation of formation of labile organic matter, reflecting increasing processes of organic matter transformation plant residues, resulting in the accumulation of primary forms of humus.
ANALYSIS. METHODS. PROGNOSIS
Problem of negative impact on the environment over time does not lose its relevance, indicating that the lack of effective existing instruments of environmental monitoring and control. There is obvious need for simple tools not instrumental integrated methods for monitoring and control of impact on the environment and environmental change as a result of given impact, including the methods available for public organizations and associations. For the purpose of development of this area has been developed and tested the technique visualizing the degree of impact on the environment, which could be the basis for the organization and development of effective public monitoring and control in Russian Federation. In turn, the enterprises need arises in the self-assessment and/or an independent of the degree of the visualization of external party’s degree visualization of the impact on the environment and development programs of its reduction. Similar programs aimed at getting visual readily accessible to external stakeholders of enterprises the result of environmental performance. Methods of monitoring and control visualization effects on the environment can be considered as best available technology in the field of environment protection.
The paper presents an approach to the establishment of environmental zones, i.e. areas characterized by a certain quality of the natural environment, which allows to develop different types of activities and to differentiate their impact requirements. Environmental zoning allow to distribute territory, i.e. environmental zones between business entities and livelihoods subjects, while providing the necessary subjects for these state of the environment within the boundaries of each of the selected zone.
There are discusses the problems associated with the formation of the chemical composition and the formation of deposits in the hot-water systems of closed type in some areas of Krasnodar Kray. There is analyzed the relationship between the processed formation elemental and phase composition of deposits, corrosion of construction equipment materials to the composition of natural water and the methods of its treatment. There were identified the main phases included in the deposit, which are based on calcium carbonate represented by calcite, aragonite and vaterite, and a mixture of the iron oxides in the form of wustite, magnetite and hematite. There was demonstrated the possibility of corrosion prevention of system’s construction materials, reducing the discharge of concentrated salt solutions resulting from the regeneration of ion exchange resins.
ECOLOGICAL EDUCATION
Environmental education, in connection with the increasing pollution and degradation of environment, exhaustion of natural resources, the imbalance of the biosphere, climate change, deterioration of human health and limiting the possibility of further development is a priority. In the conditions of modern ecological crisis, overcoming of which can ensure the preservation of humanity on the planet, the basis of moral education of man is the development of sustainable relationship between man and nature. The need for ecological knowledge dictated by today's reality: to preserve nature, to preserve it for our descendants at least in the form in which we have the opportunity to see her now, should new environmental thinking. Environmental education in the development of the education system, taking into account the "green" economy is a priority. Under the "green" economy refers to the production of various types of cleaning equipment, utilization of secondary resources and waste, the provision of environmental services, etc. In this case, a green economy is only part of the "great" economy. Important features of this economy are: efficient use of natural resources; conservation and enhancement of natural capital; reducing pollution; low carbon emissions; prevention of the loss of ecosystem services and biodiversity. The problem of waste management in recent years has acquired a special relevance and is discussed at the state level, in business and, ultimately, affects us all. Only in the EU, the turnover of a new branch approached to 100 billion euros, and the number of jobs created is 3.5 million to Environmental education are designed to prepare a person for life in the biosphere. Unfortunately, we have to admit the poor state of environmental education and upbringing.
ISSN 2413-6042 (Online)