HAZARDOUS SUBSTANCES IN ATMOSPHERIC DISCHARGES OF PIPE FURNACES REFINING PLANTS

The article deals with atmospheric emissions from fuel combustion in tubular furnaces of oil refineries

Recycling Plastics from WEEE: A Review of the Environmental and Human Health Challenges Associated with Brominated Flame Retardants

Waste electrical and electronic equipment (WEEE) presents the dual characteristic of containing both hazardous substances and valuable recoverable materials. Mainly found in WEEE plastics, brominated flame retardants (BFRs) are a component of particular interest. Several actions have been taken worldwide to regulate their use and disposal, however, in countries where no regulation is in place, the recovery of highly valuable materials has promoted the development of informal treatment facilities, with serious consequences for the environment and the health of the workers and communities involved. Hence, in this review we examine a wide spectrum of aspects related to WEEE plastic management. A search of legislation and the literature was made to determine the current legal framework by region/country. Additionally, we focused on identifying the most relevant methods of existing industrial processes for determining BFRs and their challenges. BFR occurrence and substitution by novel BFRs (NBFRs) was reviewed. An emphasis was given to review the health and environmental impacts associated with BFR/NBFR presence in waste, consumer products, and WEEE recycling facilities. Knowledge and research gaps of this topic were highlighted. Finally, the discussion on current trends and proposals to attend to this relevant issue were outlined.

Method for predicting the dissemination of hazardous substances in the soil during long-term storage of galvanic waste

The problem of production waste storage in open areas of an enterprise with a galvanic shop for the production of chips and microchips has been investigated. The composition of the sludge obtained after sewage treatment of the production of the copper line was investigated. The aim of the article is to develop a mathematical model for predicting the distribution of compounds with heavy metals in the soil during long-term storage of galvanic sludge in open areas. Modeling the process of movement of salts from the earth's surface into the lower layers of the aeration zone occurs according to the laws of molecular diffusion. The method is developed on the basis of a mathematical model that makes it possible to estimate the spread over the depth of the ground and level of soil salinity over time using initial information about soil structure and its characteristics (molecular diffusion coefficient, volume humidity), annual volumes and conditions of sludge storage in the enterprise. Restrictions are set: the presence of harmful substances on the soil surface with a concentration that exceeds the permissible level; inadmissibility of harmful substances to aquifers. The practical use of the method made it possible to identify the main dangers during long-term storage of galvanic waste in open areas. The dynamics of soil salinity levels and the depth of penetration of heavy metals increase over twenty years of conservation has been determined, as well as the possibility of hazardous compounds entering groundwater has been assessed. Polyvinyl chloride packaging has a maximum life span of 15 years. Waste should not be stored in packages and in closed areas for more than 10 years. According to the prediction results, it can be stated that storage in landfills of galvanic waste for more than 15 years leads to significant salinization of the soil and creates conditions for an emergency situation, which is caused by harmful substances entering the water horizons. Recommendations for improving storage conditions are given and the need for recycling of industrial waste is substantiated

Spatiotemporal Evaluation of Water Quality and Hazardous Substances in Small Coastal Streams According to Watershed Characteristics

In this study, spatial and temporal changes of eight water quality indicators and 30 types of hazardous substances including volatile organic compounds (VOCs), semi-volatile organic compounds (SVOCs), pesticides, and inorganic matters for the small coastal streams along the West Coast of South Korea were investigated. In coastal streams with clear seasonal changes in water quality, larger watershed areas led to greater contamination by particulate matter (i.e., suspended solids, r = 0.89), and smaller watershed areas led to greater contamination by organic matter (i.e., BOD, r = −0.78). The concentration of VOCs and pesticides was higher in agricultural areas, and those of SVOCs and metals were often higher in urban areas. According to the principal component analysis (PCA), during the wet season, the fluctuation in the water quality of coastal streams was higher in urban areas than in agricultural areas. Furthermore, coastal streams in residential areas exhibited higher levels of SVOCs, and those in industrial areas exhibited higher levels of metallic substances. Based on these results, the spatial and temporal trends of water quality and hazardous substances were obtained according to watershed characteristics, thereby clarifying the pollution characteristics of small-scale coastal streams and the major influencing factors.

Food Microbial Hazards, Safety, and Quality Control

Food is any material or substance eaten or drunk to provide energy and nutrients for the body's growth, development, and maintenance. Food can be considered safe if it is free from all hazardous substances that can affect consumer health. Food safety issues can place a high burden of responsibility on traders, government bodies, and international organizations. This chapter covers the hazards, their types, foodborne diseases, and strategies to ensure food safety and quality. Different food quality and safety assurance programs are discussed as well like quality management systems, HACCP certification, ISO 9000 family, good manufacturing practices (GMP)/good hygiene practices (GHP), total quality management (TQM), good working practices (GWP), good lab practices (GLP), etc. Moreover, the role of some novel processing technologies is also focused on in this regard.

Pengetahuan Ibu hamil tentang kebutuhan makanan sehat selama kehamilan di BPM T.H Pematangsiantar Tahun 2020

The proportion of malnutrition anemia among pregnant women in several private practices in Medan is 53.3%. The results of Dolok Saribu’s research in the village of maligas Tonga, Simalungun Regency in 2016 found that pregnant women had anemia with proportion of 57.4% Good nutrition for pregnant women is needed so that fetal growth runs rapidly and does not experience obstacles. The research objective was to describe the knowledge of pregnant women about healthy food consumption patterns in accordance with the growth and development of their pregnancy at BPM T.H. Pematangsiantar in 2020. This research is descriptive with a survey method and uses primary data that has been obtained directly from respondents, the population is 40 pregnant women’s. This data processing by editing, coding, tabulation, entry, cleaning data entry. Based on the results of the study it can be concluded that pregnant women who check their pregnancies at BPM T.H. Pematangsiantar most aged 20-35 years 34 respondents (85%), high school education 22 respondents (55%), housewives work 30 respondents (37.5%). Based on the knowledge of pregnant women about the notion of healthy food during pregnancy, 31 respondents (77.5%) were not good, knowledge of the need for healthy food consumption patterns during pregnancy was not god 20 respondents (50%), knowledge of the positive impact if the need for food consumption patterns 22 respondents (55%) were not well fulfilled and 27 respondents (67.5%) had bad knowledge of hazardous substances. Based on this study, it was found that knowledge of the respondents was not good enough, therefore it is recommended that respondents increase their knowledge about the importance of eating healthy food during pregnancy.

Retrovirus-derived acquired genes, RTL5 and RTL6, are novel constituents of the innate immune system in the eutherian brain.

Retrotransposon Gag-like 5 (RTL5, also known as sushi-ichi-related retrotransposon homolog 8 (SIRH8)) and RTL6 (aka SIRH3) are eutherian-specific genes presumably derived from a retrovirus and phylogenetically related to each other. RTL5 encodes a strongly acidic protein while RTL6 encodes an extremely basic protein, and the former is well conserved and the latter extremely well conserved among the eutherians, indicating their unique and critically important roles as acquired genes. Here we report that RTL5 and RTL6 are microglial genes playing roles in the front line of brain innate immune responses against distinct pathogens. Venus and mCherry knock-in mice exhibited expression of RTL5-mCherry and RTL6-Venus fusion proteins in microglia and as extracellular granules in the central nervus system (CNS), and displayed a rapid response to pathogens such as lipopolysaccharide (LPS), double-stranded (ds) RNA analog and non-methylated CpG DNA. These proteins trapped pathogens in microglia in a variety of RTL-pathogen complexes depending on the pathogens. These results demonstrate that RTL5 and RTL6 exert functional effects against different hazardous substances cooperatively and/or independently to protect the developing and/or mature brain. This provides the first evidence that retrovirus-derived genes play a role in the innate immune system of the eutherian brain.

PRODUCTION OF THE SORPTION SHEET FROM COMPOSITE MATERIALS AS A LIQUIDATION AGENT FOR SPILL RESPONSE OF HAZARDOUS MATERIALS ON TRANSPORT

The article raises the issues of rail transport in many countries, including the European Union and Ukraine, transportation of various classes of dangerous goods, ensuring safety during their transportation, strengthening technical standards and environmental requirements for safety of dangerous goods transportation by all modes of transport and the problem of localization and liquidation of accidents during transportation of various classes of dangerous goods by rail is raised. Methods and methods of localization and elimination of spills of dangerous goods are discussed, the sorption method is described as the chosen method to solve the problem, a brief description of sorbents is given, various variants and modifications of materials for carbon sorbents are presented, materials will be used for universal sorption web, method of obtaining a universal sorption web, demonstrated a special installation for carbonization (Carbonizer), which was slightly modernized and made by the authors according to the design of the Engels University. The method of conducting experiments is described. The characteristics of the universal sorption web, its sorption properties are given, and also the technique of using the universal sorption web as a means for localization and / or liquidation of liquid hazardous substances of 3, 5, 8 hazard classes is proposed.

EXPERIMENTAL METHODS FOR STUDYING THE RESOURCE VALUE OF DUMP BLAST FURNACE SLAGS

The study of the properties of blast-furnace slags requires an integrated approach, including various research methods. The purpose of the work is to substantiate the resource value of the Zaporizhstal dump blast furnace slag. The research methods were used: X-ray phase, petrographic, gamma-spectrometric analysis and electron probe microanalysis. The slag is dispersed into fractions, since the slag minerals have different hardness. Fractions (mm) were investigated in the work: >20 2.5–5, <0.63. X-ray phase analysis made it possible to reveal in the crystalline part of blast-furnace slag minerals that are technically valuable in the production of binders: 3CaO∙2SiO2, SiO2, 2CaO∙Al2O3∙SiO2, α-2CaO∙SiO2, 2CaO∙MgO∙2SiO2, α-CaO∙SiO2. Minerals akermanite, bredigite, pseudo-wollastonite have hydraulic activity. It is shown that the mass fraction of the amorphous component is half the mass of the blast furnace slag. The high content of substances in the amorphous state confirms the possibility of sorption of extraneous ions and compounds. The found elements Potassium, Sodium, Sulfur, Chlorine, Cuprum and Titanium are not part of the minerals. Slag contains less than 1% of the total amount of Fe, Ti and Cu, belonging to the 3rd class of hazardous substances. The maximum content of Potassium, Sodium and Titanium is typical for the fraction 2.5–5 mm. The most basic is the fraction <0.63 mm (pH 9.7), for the 2.5–5 mm fraction pH 9.1, the most acidic fraction >20 (pH 8.2). By the value of the toxicity index (4.3–5.4) and the III hazard class, dump blast furnace slag «Zaporizhstal» as a moderately hazardous waste can be used as a secondary raw material in the construction industry. The database on the content of natural radionuclides in technogenic raw materials has been updated. It has been proven that slag and its individual fractions contain natural radionuclides 40К, 226Ra, 232Th. The main contribution to the value of Сef is made by the 226Ra radionuclide, then by 232Th. The excess of specific activity is expressed for the 2.5–5 mm fraction. The I class of radiation hazard is defined, which allows the use of slag in construction without restrictions. Dump blast furnace slag «Zaporizhstal can be recommended in the production of inorganic binders « by the totality of chemical indicators.

Heavy Metals in Sapropel of Lakes in Suburban Territories of Vilnius (Lithuania): Reflections of Paleoenvironmental Conditions and Anthropogenic Influence

Geochemical and lithological parameters of sapropel in lakes, combined with pollen data and radiocarbon 14C dating, contain a wide spectrum of environmental information. This includes records of fluctuations of water level and changes of conditions of sedimentation, accumulation of organic matter and chemical elements due to climate change, human impacts and other environmental changes. Rising concentrations of hazardous substances in the natural sediments are likely to be a high risk to the natural environment. At the same time, they can greatly reduce opportunities for environmental engineering of lakes. Four lakes with different trophic states and anthropogenic pressures were chosen for this study in Lithuania. Higher concentrations of elements like Cr, Cu and Zn were not only detected in the top most layers of sapropel but also in deeper layers and are attributed to lithogenic association of trace elements in such deep layers. Concentrations of Pb were detected only in upper layers of sapropel which indicates the impact of anthropogenic activity. The main source of heavy metals was multidimensional anthropogenic pollution leading to a biogenic–anthropogenic association of elements. Sapropel with low concentrations of heavy metals exhibits a different inter-association matrix because most of the elements tend to form lithogenic–clastogenic associations.