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Assessment of Environmental Risks from Pollution by Toxic Emissions in Heat Treatment Process of Electrode Production Cover

Assessment of Environmental Risks from Pollution by Toxic Emissions in Heat Treatment Process of Electrode Production

Open Access
|Jan 2025

Figures & Tables

Figure 1.

Design features of catalytic reactors arrangement with modified zeolite in the fire channels of the firing furnace
Design features of catalytic reactors arrangement with modified zeolite in the fire channels of the firing furnace

Figure 2.

Scheme of laying modified ceramic fiber in a metal frame on top of thermal insulation of the graphitization furnace
Scheme of laying modified ceramic fiber in a metal frame on top of thermal insulation of the graphitization furnace

Meteorological characteristics and coefficients determining the conditions of dispersion of pollutants in the atmosphere of the city of Zaporizhzhia

The name of the characteristicValue
Coefficient A, which depends on the temperature stratification of the atmosphere200
The average maximum outdoor air temperature of the coldest month of the year, °C-4.2
The average maximum outdoor air temperature of the hottest month of the year, °C+ 33.2
Mid-year wind rose, % NorthNorth-EastEastThe South-EastSouthSouth-WestWesternNorth-West17.214.011.712.512.010.411.211.0
Wind speed (w), the repeatability of which is exceeded by 5%, m/s10-11

Risks of developing carcinogenic effects

Residential Area BoundaryCarcinogenic Risk SF, mg/(kg·day)Single carcinogenic risk UR, mg/m3Average Annual Concentration Ci, mg/m3Critical Organs/SystemsIndividual Effect Development Risk ICRRisk Level
Benzo(a)pyrene
50-32-83.10.0022140.00000257-5.69-9Acceptable
Benzene
71-43-20.0271.93-50.00025415CM, K, CNS4.91-9Acceptable
Lead and its compounds in terms of lead
7439-92-10.0423.0-50.00000015CM, K, CNS4.50-12Acceptable
Chromium and its compounds in terms of chromium trioxide
18540-29-9420.030.00000101RO3.03-8Acceptable

Risks of developing non-carcinogenic effects

Boundary of Residential AreaReference (Safe) Concentration (RfCi), mg/m3Average Annual Concentration (Ci), mg/m3Critical Organs/SystemsHazard Quotient (HQ)Criteria for Non-carcinogenic Risk
Suspended substances
TSP0.10.05859362RO0.5859362<1Risk of adverse effects is extremely low
Mercury and its compounds in terms of mercury
7439-97-60.0033.712-10CNS1.24E-7<1Risk of adverse effects is extremely low
Ammonia
7664-41-70.10.00000003RO3.00E-7<1Risk of adverse effects is extremely low
Fluorine and its gaseous and vaporous compounds in terms of hydrogen fluoride
7664-39-30.030.00001477SS, RO0.00049233<1Risk of adverse effects is extremely low
Styrene
100-42-51.00.00017315CNS0.00017315<1Risk of adverse effects is extremely low
Phenol
108-95-20.0060,00046636CVS, L, K, CNS0.07772667<1Risk of adverse effects is extremely low
Nitrogen oxides (nitric oxide and nitrogen dioxide)
10102-44-00.040.00330166RO0.0825415<1Risk of adverse effects is extremely low
Carbon monoxide
630-08-03.00.01295109CNS, CVS, B0.00431703<1Risk of adverse effects is extremely low
Sulfur dioxide (sulfur dioxide and trioxide)
7446-09-50.080.07545244RO0.9431555<1Risk of adverse effects is extremely low
Manganese and its compounds in terms of manganese dioxide
7439-96-50.000050.00003778CNS0.7556<1Risk of adverse effects is extremely low
Hydrogen sulfide
-0.0080.00120000-0.15<1Risk of adverse effects is extremely low
Naphthalene
-0.0030.00171000-0.57<1Risk of adverse effects is extremely low
Acenaphthene
-0.070.01330000-0.19<1Risk of adverse effects is extremely low
Dibutyl phthalate
-0.10.00100000-0.01<1Risk of adverse effects is extremely low
Dimethyl sulfide
-0.080.00320000-0.04<1Risk of adverse effects is extremely low
Iron and its compounds in terms of iron
-0.040.00000100-0.000025<1Risk of adverse effects is extremely low

Classification of carcinogenic risk levels

Risk levelRisk during CRa lifetime
Unacceptable for professional contingents and the populationGreater than 10−3
Acceptable for professional contingents and unacceptable for the population10−3 – 10−4
Conditionally acceptable10−4 – 10−6
AcceptableLess than 10−6

Non-carcinogenic risk criteria

Risk characteristicsHazard ratio
The risk of harmful effects is considered insignificantly small<1
The limit value that does not require urgent measures, however, cannot be considered as quite acceptable1
The likelihood of developing harmful effects increases in proportion to the increase in HQ>1

List of priority chemical substances emitted by stationary sources of PJSC “Ukrgrafit”

CASCodeSubstance NameRfC, mg/m3SFi, (mg/kg-day)−1MPCm.v., mg/m3MPCs.p., mg/m3Impact on Organs and Systems
1TSP2902Substances in the form of suspended solid particles0.1-0.50.15RO
210102-44-0301Nitrogen oxides (nitric oxide and nitrogen dioxide)0.04-0.2-RO
3630-08-0337Carbon monoxide5.0-5.03.0CNS, CVS
47446-09-5330Sulfur dioxide (sulfur dioxide and trioxide)0.08-0.50.05RO
57439-96-5143Manganese and its compounds in terms of manganese dioxide0.00005-0.01-CNS
67439-92-1184Lead and its compounds in terms of lead0.000150.0420.001-CNS, CVS, K, CM
718540-29-9203Chromium and its compounds in terms of chromium trioxide0.0001420.002-RO
850-32-8703Benzo(a)pyrene-3.1-0.00001-
97439-97-6183Mercury and its compounds in terms of mercury0.003--0.0003CNS
107664-41-7303Ammonia0.1-0.2-RO
117664-39-3342Fluorine and its gaseous and vaporous compounds in terms of hydrogen fluoride0.03-0.02-SS, RO
1271-43-2602Benzene0.060.0271.5-CM, K, CNS
13100-42-5620Styrene1.0-0.04-CNS
14108-95-21071Phenol0.006-0.01-CVS, K, CNS, L
15 333Hydrogen sulfide--0.008--
16 410Methane--50 Tentative Safe Level of Impact--
17 708Naphthalene--0.003--
18 714Acenaphthene--0.07--
19 1215Dibutyl phthalate--0.1--
20 1707Dimethyl sulfide--0.08--
21 2735Mineral oil--0.05 Tentative Safe Level of Impact--
22 2754Hydrocarbon homologues C12-C19--1.0--
23 123Iron and its compounds in terms of iron---0.04-

General list of emissions of polluting substances at the enterprise after reconstruction

NOSubstance NameCodeMPCm.v. Tentative Safe Level of Impact, mg/m3Hazard ClassEmission Power of Pollutants
g/stons/year
1Iron and its compounds calculated as iron1230.04 (s.d.)33.062
2Manganese and its compounds calculated as manganese dioxide1430.0120.02902
3Mercury and its compounds calculated as mercury1830.00003 (s.d.)10.0000043
4Lead and its compounds calculated as lead1840.00110.0000024
5Chromium and its compounds calculated as chromium trioxide2030.00210.0000035
6Nitrogen oxides (nitric oxide and nitrogen dioxide) are calculated as nitrogen dioxide3010.0237.6461106
7Ammonia3030.0240.00000047
8Sulfur dioxide (dioxide and trioxide) is calculated as sulfur dioxide3300.05316.76398
9Hydrogen sulfide3330.008221.408209
10Carbon monoxide3375041.99122610
11Fluorine and its vapor and gas compounds calculated as hydrogen fluoride3420.0220.000060011
12Methane41050 Tentative Safe Level of Impact-0.005850012
13Benzene6021.520.14693213
14Styrene6200.00420.19989814
15Benzo(a)pyrene7030.01 μg per 100 m3 (s.d.)10.00138315
16Naphthalene7080.00342.3533416
17Acenaphthene7140.007-2.80200117
18Phenol10710.00122.7486218
19Dibutyl phthalate12150,1-0.1701124.84293
20Dimethyl sulfide17070,0840.63346019.20096
21Mineral petroleum oil27350.05 Tentative Safe Level of Impact-0.000010.00018
22Hydrocarbon homologues C12-C1927541.040.005240.05394
23Substances in the form of suspended solid particles undifferentiated by composition29020.538.44289111.11265
24Nitrogen (I) oxide [N2O] No MPC-0.028710.38667
25Carbon dioxide11811No MPC-5,107.23198,942.758
In total 5,164.727100,793.00
Excluding greenhouse gases 57.467841,849.8609
DOI: https://doi.org/10.2478/acee-2024-0024 | Journal eISSN: 2720-6947 | Journal ISSN: 1899-0142
Language: English
Page range: 97 - 106
Submitted on: Jun 3, 2024
Accepted on: Aug 19, 2024
Published on: Jan 9, 2025
Published by: Silesian University of Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2025 Olena IVANENKO, Andrii VAHIN, Tetyana SHABLIY, Oksana TERESHCHENKO, Denis SHVACHKO, Sergii PLASHYKHIN, Nonna PAVLIUK, published by Silesian University of Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.