scholarly journals Monitoringof the sanitary-ecological situation in a sewer network

2020 ◽  
Vol 17 (5) ◽  
pp. 173-180
Author(s):  
A. M. Teliatnikova ◽  
◽  
S. V. Fedorov ◽  
M. I. Alekseev ◽  
◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Air Pollution ◽  
Urban Environment ◽  
Measuring Equipment ◽  
Negative Impact ◽  
Common Type ◽  
Ecological Situation ◽  
Gas Concentration ◽  
Sewer Network ◽  
Observation Wells

The article deals with the problem of the negative impact of sewage gases on the sanitary and environmental conditions of the urban environment. There was performed monitoring of gases at a section of the sewer network with three observation wells as the most common type of structures. To control gas concentration, measuring equipment was installed in the wells for twenty four hours. According to the results of the survey, there was established the presence of methane and an increased content of carbon dioxide in the system. Also, a one-shot measurement of gas concentration in the environment near the wells was carried out. Based on the monitoring results at the observation wells, a low potential of the air pollution has been identified.

MODELING DISPERSI EMISI BAU GAS SO2 DARI CEROBONG INDUSTRI TEKSTIL

2018 ◽  
Vol 4 (3) ◽  
Author(s):  
Teguh Prayudi
Keyword(s):  
Air Pollution ◽  
Textile Industry ◽  
Negative Impact ◽  
Exhaust Gas ◽  
Gas Emission ◽  
Gas Dispersion ◽  
Gas Concentration ◽  
Exhaust Gas Emission ◽  
So2 Concentration ◽  
So2 Gas

Textile Industry gives economic and fi nancial contribution to society, however it has negative impact to the environment, i.e. air pollution, bad smell and noise. For that reason, a study to evaluate exhaust gas emission of some industry textile was carried out from the stack. The aim of the study is to abtain SO2 gas concentration, which is emited from the stack A gas dispersion anlysis, it was indicated that SO2 gas concentration from the stack is still below the standard (1200 mg/m3). Thehighest SO2 concentration was 18 mg/m3 at about 200 meter away from the stack. It meant that SO2 concentration and SO2 odor from the textile industry did not give any impact to the environmentKey words: emission, textile industry,

scholarly journals REVIEW ON ASPECTS OF AIR POLLUTION AND ATOPIC DERMATITIS

2021 ◽  
Vol 5 (04) ◽  
Author(s):  
DIPASHRI BORSE Deep ◽  
Santosh Chavhan
Keyword(s):  
Air Pollution ◽  
Atopic Dermatitis ◽  
Particulate Matter ◽  
Negative Impact ◽  
Common Type ◽  
Outdoor Air ◽  
Toxic Pollutants ◽  
Car Exhaust ◽  
Industrial Gases ◽  
Indoor And Outdoor

Air pollution, which reaches an all-new level almost every day, has a negative impact on skin. The toxic pollutants present in both indoor and outdoor air are absorbed into skin, which leads to a number of skin problems. The pollution that affects  skin has a combination of smog and particulate matter, which come from car exhaust, metal smelting, smoking, industrial gases. .The polluted air makes it hard for the skin to breathe, leaving it irritated, dehydrated, and worsening existing conditions such as redness; rosacea and eczema. Atopic dermatitis (AD) is the most common type of eczema.

scholarly journals Efektivitas Ekstraksi Tanaman Lidah Mertua dan Sereh Dalam Mereduksi Kadar Co Dalam Ruangan

2021 ◽  
Vol 20 (2) ◽  
pp. 128-136
Author(s):  
Rizky Rahadian Wicaksono ◽  
Eko Sulistiono
Keyword(s):  
Carbon Dioxide ◽  
Air Pollution ◽  
Urban Environment ◽  
Experimental Research ◽  
Ornamental Plant ◽  
The Other ◽  
Toxic Substances ◽  
Pollution Levels ◽  
Lemon Grass ◽  
Post Test

Pendahuluan: Lidah mertua (Sansevieria trifasciata) dan sereh (Cymbopogon citrates)  merupakan tanaman yang memiliki banyak manfaat. Banyak orang telah memanfaatkan tanaman ini sebagai tanaman hias di rumah. Disisi lain, tanaman ini memberikan manfaat yang luar biasa dalam mengurangi kadar polusi udara. Zat beracun karbondioksida, benzene, formaldehyde, trichloroethylene, mampu di serap oleh tanaman ini. Lingkungan perkotaan kaya sekali akan zat pencemar, sehingga penelitian ini dilakuan. Adapun tujuan dari penelitian ini adalah untuk mengetahui kemampuan tanaman lidah mertua dan sereh dalam menyerap kadar CO asap rokok ruangan.Metode: Metode yang digunakan dalam penelitian ini merupakan true eksperimental dengan desain pretest dan postest. Penelitian ini dilakukan dengan prosedur pengeringan tanaman mengunakan oven pengering selama 24 jam dan 48 jam dengan suhu 60 oC. Dilakukan dengan dua kali pengulangan 2,5 dan 5 gram. Data dianalisis secara deskriptif kuantitatif.Hasil: Ekstrak tanaman lidah mertua (Sansevieria trifasciata) dan sereh (Cymbopogon citrates) dengan pengovenan 48 jam lebih baik dalam penyerapan CO ruangan yang disebabkan oleh asap rokok dibandingkan dengan pengovenan selama 24 jamSimpulan: Penelitian ini menghasilkan bahwa ekstraksi lidah mertua dan sereh dapat menyerap kadar CO ruangan secara maksimal pada pengeringan 48 jam. ABSTRACT Tittle: The efectifity extraction of Sansevieria trifasciata and Cymbopogon citrates to reduce in door CO levelIntroduction: Snake plant (Sansevieria trifasciata) and lemon grass (Cymbopogon citrates have many benefits. Many people have used this plant as an ornamental plant inside home. On the other hand, this plant provides tremendous benefits in reducing air pollution levels. Toxic substances carbon dioxide, benzene, formaldehyde, trichlorethylene, can be absorbed by this plant. The urban environment is very rich in pollutants, so this research was carried out. The purpose of this study was to determine the ability of the in-laws and lemongrass tongue plants to absorb CO levels in indoor cigarette smoke.Methods: The method used in this research was the experimental research with pre-test and post-test designs. This research was conducted by drying the plants using a drying oven for 24 hours and 48 hours with a temperature of 60 oC. Performed in two repetitions of 2.5 and 5 grams.Results: The results of the extraction were exposed in a room treated with cigarette smoke with repetitions of 5, 10, 15, 20, 25 and 30 minutes. Room CO levels were measured using a CO meter.Conclusion: This study shows that the snake plants and lemon grass extract can absorb room CO levels maximally at 48 hours of drying.

INFLUENCE OF ECOLOGICAL SITUATION ON INDUSTRIAL ENTERPRISES IN THE TASHKENT REGION

2019 ◽  
Vol 21 (2) ◽  
pp. 72-77
Author(s):  
Gulchehra Rakhimova ◽  
Keyword(s):  
Public Health ◽  
Air Pollution ◽  
Soil Water ◽  
Environmental Changes ◽  
Negative Impact ◽  
The State ◽  
Organic Fertilizers ◽  
Oil Refining ◽  
Ecological Situation ◽  
Industrial Enterprises

The article describes the state of chemical, nitrogen and organic fertilizers, agriculture,oil refining, metalworking, metalworking, built in the 1940-80s in the Tashkent region.The causes of the environmental changes in these industrial enterprises in the Tashkent region were studied, the negative impact on public health , as well as the effect of soil,water and air pollution on the environment of the region

scholarly journals ASSESSMENT OF THE LEVEL OF MEDICAL AND ECOLOGICAL WELFARE OF THE TERRITORY OF IZHEVSK

2019 ◽  
Vol 29 (3) ◽  
pp. 374-382
Author(s):  
S.A. Gagarin ◽  
I.L. Malkova ◽  
A.V. Semakina
Keyword(s):  
Air Pollution ◽  
Urban Environment ◽  
Noise Pollution ◽  
Well Being ◽  
Motor Vehicles ◽  
Ecological Situation ◽  
Main Indicator ◽  
High Level ◽  
The City ◽  
Statistical Indicators

The article presents the results of zoning of the territory of Izhevsk by the level of medical and ecological well-being using the statistical method of weighted points. The level of morbidity of the child population (per 1000 children up to 15 years old) in the context of 170 pediatric sites was used as the main indicator of the ecological comfort of the urban environment. Among the factors that determine the territorial heterogeneity of medical and statistical indicators, a complex index of air pollution, noise pollution from motor vehicles, and area of gardening were considered. As a result, micro-districts of the city were divided into three groups according to the level of medical and ecological comfort: disadvantaged (20 %), satisfactory (62 %) and comfortable (18 %). The most tense situation is typical for the residential districts Center, Bummash and Nagorny with a consistently high level of morbidity among children. Micro-districts with the most comfortable medical and ecological situation are concentrated in Pervomaisky district.

Research of acoustic discomfort and pollution environment by increased flow motor transportation in the south district of Belgorod

2021 ◽  
Vol 91 ◽  
pp. 85-94
Author(s):  
A. S. Edamenko ◽  
◽  
A. V. Yastrebinskaya ◽  
A. Yu. Semeykin ◽  
◽  
...  
Keyword(s):  
Air Pollution ◽  
Urban Environment ◽  
Noise Level ◽  
Negative Impact ◽  
Rapid Development ◽  
Noise Pollution ◽  
Motor Vehicles ◽  
Traffic Flows ◽  
Harmful Substances ◽  
Emissions Of Harmful Substances

Introduction. The present time is characterized by the rapid development of cities and, as a consequence, the aggravation of a whole set of problems. Cities provide a fairly high standard of living for the population, satisfy their needs, but at the same time, they are the center of the significant environmental problems. All this is due to the excessive concentration of transport and economic facilities in relatively small areas. Goals and objectives. The aim of the work is to assess the level of impact of vehicles in terms of noise pollution and air pollution in Belgorod Construction of noise maps of individual microdistricts of Belgorod and calculation of emissions of the main pollutants into the air from traffic flows, which will make it possible to predict and identify areas of the urban environment where the established sanitary and hygienic standards are exceeded. Methodology. The study of the noise situation in certain areas of the city was carried out in accordance with the requirements of GOST 20444-2014 and GOST 53187-2008. The main characteristic was the equivalent sound level of traffic flows, calculated from the results of instrumental measurements of the noise level. To assess air pollution, calculations were carried out according to the methodology for calculating emissions of pollutants into the atmosphere by vehicles on city highways. Field observations to study traffic flows were carried out in the daytime. Results and its discussion. The obtained data on the noise level on the territory of the studied microdistrict were used to compile a noise map, which makes it possible to identify areas of the urban environment that do not meet sanitary and hygienic requirements for the noise factor. Calculation data for emissions of harmful substances from vehicles can be used to create environmental passports and are useful in making decisions to reduce the negative impact of transport on the environmental situation of industrial cities. Conclusion. The study of noise pollution and atmospheric air pollution, the source of which is motor vehicles, in an urban environment, makes it possible to develop a complex of health-improving, environmental, urban planning measures and a number of architectural and planning solutions aimed at reducing the level of noise pollution and air pollution in these areas. Keywords: urbanized areas, vehicles, noise pollution, emissions of harmful substances

ANALISIS PENGUKURAN KONSENTRASI KARBONMONOKSIDA (CO) PADA BREATHING ZONE PETUGAS PARKIR BASEMENT MALL KOTA BANDUNG

2019 ◽  
Author(s):  
Gede H Cahyana
Keyword(s):  
Air Pollution ◽  
Indoor Air ◽  
Indoor Air Pollution ◽  
Sampling Method ◽  
Breathing Zone ◽  
Gas Concentration ◽  
Average Value ◽  
Co Concentration ◽  
Personal Dosimeter ◽  
Co Gas

Indoor air pollution in closed room is one of the air pollution that gives serious threats to human health. One of them come from vehicle gas emissions in closed parking area. This research identifies and analyses CO concentration measured in Mall X parking man’s breathing zone with closed parking area and in Mall Y semi-opened parking area. CO measurement carried out by passive sampling method using Personal Dosimeter Tubes. Measurement result of CO gas concentration to parking man’s breathing zone in Mall X was 25 – 81,25 ppm with average value in 50 ± 26,15 ppm. Meanwhile CO gas concentration in Mall Y gave result 3,13 – 12,5 ppm with average value in 7,88 ± 4,36 ppm. Correlation value between CO concentration and its intake in Mall X area was 0,9983, meanwhile correlation value between CO concentration and its intake in Mall Y area was 0,9903. It was concluded that CO gas concentration measured in parking man’s breathing zone influenced the differences of CO intake value in significance value.

VALORIZATION OF THE URBAN ENVIRONMENT OF SOUTH SERBIA FROM THE AIR QUALITY ASPECT

2018 ◽  
Vol 28 (4) ◽  
pp. 1329-1333
Author(s):  
Miodrag Šmelcerović
Keyword(s):  
Air Pollution ◽  
Air Quality ◽  
Urban Environment ◽  
Pollution Sources ◽  
Anthropogenic Sources ◽  
Anthropogenic Factors ◽  
Limit Values ◽  
Cause And Effect ◽  
Sources Of Pollution

The protection of the environment and people’s health from negative influences of the pollution of air as a medium of the environment requires constant observing of the air quality in accordance with international standards, the analysis of emission and imission of polluting matters in the air, and their connection with the sources of pollution. Having in mind the series of laws and delegated legislations which define the field of air pollution, it is necessary to closely observe these long-term processes, discovering cause-and-effect relationships between the activities of anthropogenic sources of emission of polluting matters and the level of air degradation. The relevant evaluation of the air quality of a certain area can be conducted if the level of concentration of polluting matters characteristic for the pollution sources of this area is observed in a longer period of time. The data obtained by the observation of the air pollution are the basis for creation of the recovery program of a certain area. Vranje is a town in South Serbia where there is a bigger number of anthropogenic pollution sources that can significantly diminish the air quality. The cause-and-effect relationship of the anthropogenic sources of pollution is conducted related to the analysis of systematized data which are in the relevant data base of the authorized institution The Institute of Public Health Vranje, for the time period between the year of 2012. and 2017. By the analysis of data of imission concentrations of typical polluting matters, the dominant polluting matters were determined on the territory of the town of Vranje, the ones that are the causers of the biggest air pollution and the risk for people’s health. Analysis of the concentration of soot, sulfur dioxide and nitrogen oxides indicates their presence in the air of Vranje town area in concentrations that do not exceed the permitted limit values annually. The greatest pollution is caused by the soot content in the air, especially in the winter period when the highest number of days with the values above the limit was registered. By perceiving the influence of natural and anthropogenic factors, it is clear that the concentration of polluting matters can be decreased only by establishing control over anthropogenic sources of pollution, and thus it can be contributed to the improvement of the air quality of this urban environment.

Organic chemical devulcanization of rubber vulcanizates in supercritical carbon dioxide and associated less eco-unfriendly approaches: A review

2021 ◽  
pp. 0734242X2110085
Author(s):  
Jabulani I Gumede ◽  
Buyiswa G Hlangothi ◽  
Chris D Woolard ◽  
Shanganyane P Hlangothi
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Negative Impact ◽  
Raw Materials ◽  
Chemical Components ◽  
Organic Chemical ◽  
Attractive Alternative ◽  
Special Focus ◽  
Waste Tyres ◽  
Supercritical Carbon

There is a growing need to recover raw materials from waste due to increasing environmental concerns and the widely adopted transition to circular economy. For waste tyres, it is necessary to continuously develop methods and processes that can devulcanize rubber vulcanizates into rubber products with qualities and properties that can closely match those of the virgin rubber. Currently, the most common, due to its efficiency and perceived eco-friendliness in recovering raw rubber from waste rubbers, such as tyres, is devulcanization in supercritical carbon dioxide (scCO2) using commercial and typical devulcanizing agents. The scCO2 has been generally accepted as an attractive alternative to the traditional liquid-based devulcanization media because of the resultant devulcanized rubber has relatively better quality than other processes. For instance, when scCO2 is employed to recover rubber from waste tyres (e.g. truck tyres) and the recovered rubber is blended with virgin natural rubber (NR) in various compositions, the curing and mechanical properties of the blends closely match those of virgin NR. The atmospheric toxicity and cost of the commonly used devulcanization materials like chemical agents, oils and solvents have enabled a shift towards utilization of greener (mainly organic) and readily available devulcanization chemical components. This literature review paper discusses the approaches, which have less negative impact on the environment, in chemical devulcanization of rubber vulcanizates. A special focus has been on thermo-chemical devulcanization of waste tyres in scCO2 using common organic devulcanizing agents.

scholarly journals The Influence of Urban Sprawl on Air Pollution and the Mediating Effect of Vehicle Ownership

Processes ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 1261
Author(s):  
Aiping Tao ◽  
Qun Liang ◽  
Peng Kuai ◽  
Tao Ding
Keyword(s):  
Air Pollution ◽  
Urban Sprawl ◽  
Negative Impact ◽  
Empirical Support ◽  
Mediating Effect ◽  
Vehicle Ownership ◽  
Mediating Role ◽  
Effect Model ◽  
Significant Negative Impact ◽  
The Impact

Based on the panel data of 224 prefecture-level and above cities in China from 2003 to 2016, this paper empirically studies the impact of urban sprawl on air pollution and introduces a mediating effect model to test the mediating role of vehicle ownership concerning the impact of urban sprawl on air pollution. The research in this paper arrives at three conclusions. First, urban sprawl has a significant positive effect on air pollution, and this conclusion is still valid after solving the endogeneity problem and conducting a robustness test. Second, the results of mediating effect test show that urban sprawl indirectly affects air pollution through the partial mediating effect of vehicle ownership. By removing the mediating effect, urban sprawl has a significant negative impact on air pollution, indicating that the mediating effect of vehicle ownership is higher concerning the impact of urban sprawl on air pollution. Third, further panel quantile regression results show that the higher the level of air pollution, the weaker the mediating effect of vehicle ownership and the stronger the direct effect of urban sprawl on air pollution. These conclusions can provide some empirical support for solving the air pollution problems caused by urban sprawl in China.

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