The Proof-of-the-Concept of Application of Pelletization for Mitigation of Volatile Organic Compounds Emissions from Carbonized Refuse-Derived Fuel
Abstract
:1. Introduction
2. Materials and Methods
2.1. CRDF Samples
- ground (loose powder);
- pelletized.
2.2. Qualitative and Quantitative Analyses of VOC Emitted from CRDF
2.3. Evaluation of VOC Emissions Mitigation Potential
2.4. The Simulation of VOC Concentration in the Air during the Four Day Storage of Ground or Pelletized CRDF
- The volume of CRDF fills 50% of the total volume of storage bin;
- The volume of the storage bin is 1 m3;
- The bulk density of ground CRDF is 424.4 kg·m−3 [1];
- The bulk density of pelletized CRDF is 625.0 kg·m−3 [44]—it has been assumed that CRDF pellets’ bulk density is equal to the average value from the most commonly found pellets’ bulk density range between 550 and 700 kg·m−3.
- HAC—The highest allowed concentration [45]—Polish standard;
- HAMC—The highest allowed momentary concentration [45]—Polish standard;
- IDLH—Immediately dangerous to life or health [46]—USA standard;
- STEL—Short term exposure limit [46]—USA standard;
- TWA NOISH—Time weighted average concentration based on National Institute for Occupational Safety and Health (NIOSH) REL for a 10 h workday —NIOSH REL (recommended exposure level) (this is ‘recommended’) time-weighted average (TWA), ‘up to 10 h exposure limit during a 40 h workweek’ [46]—USA standard,
- TWA OSHA—Time weighted average concentration or Occupational Safety and Health Administration (OSHA) PEL for 8 h TWA concentration) OSHA PEL (permissible exposure limits) (this is regulatory) TWA, 8 h exposure limit [46]—USA standard.
3. Results
- (A)
- alkyl derivatives of benzene or phenols (possible carcinogens) (32 compounds with an emission of 4196.92 μg/kg (ground) and 576.28 μg/kg (pelletized));
- (B)
- alkyl derivatives of two-ring aromatic hydrocarbon (16 compounds with an emmision of 1367 μg/kg (ground) and 178 μg/kg (pelletized));
- (C)
- derivatives of heterocyclic amines (7 compounds, with an emission of 170 μg/kg (ground) and 23 μg/kg (pelletized));
- (D)
- compounds that are generally considered as lower risk (e.g., present naturally in food) (22 compounds with an emission of 8097 μg/kg (ground) and 1113 μg/kg (pelletized));
- (E)
- belonging to other groups or with an unknown structure (7 compounds with an emission of 662 μg/kg (ground) and 95 μg/kg (pelletized).
4. Conclusions
- VOCs are emitted from CRDF during storage.
- Pelletization reduced the VOCs emissions potential during storage by ~86%, in comparison with ground CRDF.
- Due to pelletization, it was possible to reduce the emission of 10 highly toxic compounds, 50 highly flammable compounds, and 35 potentially explosive VOCs.
- CRDF pellets can be classified as a less hazardous material than bulky and powdery CRDF.
- CRDF pelletization reduces the risk of exceeding health standard threshold values for occupational inhalation exposure and influences on technical requirements of forced ventilation of CRDF storage bins or a production facility.
Supplementary Materials
Author Contributions
Funding
Conflicts of Interest
References
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Compound Name, International Union of Pure and Applied Chemistry (IUPAC) | Chemical Abstracts Service (CAS) Number | Emission (µg/kg) | Emission Mitigation rate (%) | IDLH [37] | Flash Point [37] | Lower Explosive Limit [37] | |
---|---|---|---|---|---|---|---|
Ground CRDF | Pelletized CRDF | Pelletized CRDF | mg·dm−3 | °C | % | ||
3-methylbutanoic acid (D) | 503-74-2 | 1.55 | 0 | 100 | nd | 21.1 | 1.5 |
4-ethylpyridine (C) | 536-75-4 | 4.65 | 0 | 100 | nd | 50.0 | nd |
5-methyl-1,2,3,4-tetrahydronaphthalene (B) | 2809-64-5 | 0.01 | 0 | 100 | nd | nd | nd |
1,2-xylene (A) | 95-47-6 | 43.41 | 0.9 | 97.9 | 3906 | 32.2 | 0.9 |
heptan-2-one (D) | 110-43-0 | 116.28 | 3.3 | 97.2 | 3736 | 32.9 | 1.1 |
1,3-diethylbenzene (A) | 141-93-5 | 119.38 | 4.79 | 96.0 | nd | 51.0 | 0.8 |
2,5-dimethylpyrazine (C) | 123-32-0 | 6.2 | 0.3 | 95.2 | nd | 64.0 | nd |
5-methyl-2,3-dihydro-1H-indene (B) | 874-35-1 | 89.92 | 5.39 | 94.0 | nd | nd | nd |
4-methyl-2,3-dihydro-1H-indene (B) | 824-22-6 | 122.48 | 7.49 | 93.9 | nd | nd | nd |
1,4-dimetylopirydyne (C) | 108-47-4 | 23.26 | 2.1 | 91.0 | nd | 50.0 | nd |
Hexylbenzene (A) | 1077-16-3 | 451.16 | 42.55 | 90.6 | nd | 83.0 | 0.7 |
pyridine (C) | 110-86-1 | 6.2 | 0.6 | 90.3 | 3240 | 20.0 | 1.8 |
1-(furan-2-yl)ethenone (E) | 1192-62-7 | 43.41 | 4.79 | 89.0 | nd | 71.0 | nd |
2-ethylpyrazine (C) | 13925-00-3 | 12.4 | 1.5 | 87.9 | nd | 23.0 | nd |
2,4-diethyl-1-methylbenzene (A) | 1758-85-6 | 12.4 | 1.5 | 87.9 | nd | nd | nd |
2-ethyl-1,4-dimethylbenzene (A) | 1758-88-9 | 55.81 | 6.89 | 87.7 | nd | 58.9 | nd |
acetic acid (D) | 64-19-7 | 148.84 | 18.58 | 87.5 | 123 | 39.4 | 4.0 |
2,3-dihydro-1H-indene (B) | 496-11-7 | 54.26 | 6.89 | 87.3 | nd | 50.0 | nd |
heptanal (D) | 111-71-7 | 1051.16 | 134.55 | 87.2 | nd | 35.0 | 1.1 |
decanal (D) | 112-31-2 | 458.91 | 58.74 | 87.2 | nd | 83.0 | 0.8 |
propanoic acid (D) | 79-09-4 | 13.95 | 1.8 | 87.1 | nd | 52.2 | 2.9 |
n-propylbenzene (A) | 103-65-1 | 27.91 | 3.6 | 87.1 | nd | 42.0 | 0.9 |
1,2-diethylbenzene (A) | 135-01-3 | 88.37 | 11.39 | 87.1 | nd | 55.0 | 0.8 |
octanal (D) | 124-13-0 | 1244.96 | 162.12 | 87.0 | nd | 52.0 | 1.0 |
an unknown isomer of ethyl-dimethyl benzene (A) | - | 85.27 | 11.09 | 87.0 | nd | nd | nd |
4-ethyl-1,2-dimethylbenzene (A) | 934-80-5 | 85.27 | 11.09 | 87.0 | nd | nd | nd |
1-methyl-1H-indene (B) | 767-59-9 | 200 | 26.07 | 87.0 | nd | 77.0 | nd |
1,3,5-trimethylbenzene (A) | 108-67-8 | 327.13 | 42.85 | 86.9 | nd | 50.0 | 0.9 |
1,3-xylene (A) | 108-38-3 | 93.02 | 12.29 | 86.8 | 3906 | 27.8 | 1.1 |
2-ethyl-1,4-dimethylbenzene (A) | 1758-88-9 | 113.18 | 14.98 | 86.8 | nd | 58.9 | nd |
Phenol (A) | 108-95-2 | 65.12 | 8.69 | 86.7 | 962 | 79.4 | 1.8 |
2-methyl-5-propan-2-ylphenol (B) | 499-75-2 | 114.73 | 15.28 | 86.7 | nd | nd | nd |
2-methylpyrazine (C) | 109-08-0 | 31.01 | 4.2 | 86.5 | nd | 50.0 | nd |
unknown compound (E) | - | 51.16 | 6.89 | 86.5 | nd | nd | nd |
1,2,3,5-tetramethylbenzene (A) | 527-53-7 | 97.67 | 13.19 | 86.5 | nd | 63.0 | 0.8 |
6-methyl-1,2,3,4-tetrahydronaphthalene (B) | 1680-51-9 | 57.36 | 7.79 | 86.4 | nd | 259.7 | nd |
dec-3-yn-1-ol (E) | 51721-39-2 | 63.57 | 8.69 | 86.3 | nd | 107.0 | nd |
2-ethyl-1,3-dimethylbenzene (A) | 2870-04-4 | 220.16 | 30.27 | 86.3 | nd | nd | nd |
nonanal (D) | 124-19-6 | 2443.41 | 338.93 | 86.1 | nd | 64.0 | 0.8 |
Pentylbenzene (A) | 538-68-1 | 66.67 | 9.29 | 86.1 | nd | 66.0 | 0.7 |
furan-2-carbaldehyde (D) | 98-01-1 | 96.12 | 13.49 | 86.0 | 393 | 60.0 | 2.1 |
1-ethyl-3,5-dimethylbenzene (A) | 934-74-7 | 212.4 | 29.67 | 86.0 | nd | 57.3 | nd |
1-undecyne (E) | 2243-98-3 | 330.23 | 46.15 | 86.0 | nd | 65.0 | 0.7 |
Undecane (E) | 1120-21-4 | 117.83 | 16.48 | 86.0 | nd | 60.0 | 0.7 |
2-oxopropyl acetate (E) | 592-20-1 | 68.22 | 9.59 | 85.9 | nd | nd | nd |
1-methyl-4-prop-1-en-2-ylcyclohexene (D) | 138-86-3 | 737.98 | 105.78 | 85.7 | nd | nd | nd |
1,2,3,4-tetrahydronaphthalene (B) | 119-64-2 | 91.47 | 13.19 | 85.6 | nd | 71.0 | 0.8 |
4,6,6-trimethylbicyclo[3.1.1]hept-3-ene (D) | 80-56-8 | 365.89 | 53.04 | 85.5 | nd | nd | nd |
5,6-dimethyl-1,2,3,4-tetrahydronaphthalene (B) | 21693-54-9 | 12.4 | 1.8 | 85.5 | nd | nd | nd |
2-ethyl-2,3-dihydro-1H-indene (B) | 56147-63-8 | 272.87 | 40.16 | 85.3 | nd | nd | nd |
1,4-xylene (A) | 106-42-3 | 178.29 | 26.37 | 85.2 | 3960 | 27.2 | 1.1 |
4,7-dimethyl-2,3-dihydro-1H-indene (B) | 6682-71-9 | 212.4 | 31.47 | 85.2 | nd | nd | nd |
1,5-dimethyl-1,2,3,4-tetrahydronaphthalene (B) | 21564-91-0 | 26.36 | 3.9 | 85.2 | nd | 106.1 | nd |
1-ethenyl-2,4-dimethylbenzene (A) | 2234-20-0 | 100.78 | 15.28 | 84.8 | nd | nd | nd |
Butylbenzene (A) | 104-51-8 | 903.88 | 138.45 | 84.7 | nd | 59.0 | 0.8 |
1,3-dimethyl-2,3-dihydro-1H-indene (B) | 4175-53-5 | 103.88 | 15.88 | 84.7 | nd | nd | nd |
toluene (A) | 108-88-3 | 448.06 | 68.92 | 84.6 | 1885 | 4.4 | 1.1 |
hexanal (D) | 66-25-1 | 652.71 | 100.69 | 84.6 | nd | 25.0 | 1.3 |
1-phenylethanone (A) | 98-86-2 | 234.11 | 36.26 | 84.5 | nd | 77.0 | nd |
azulene (B) | 275-51-4 | 15.5 | 2.4 | 84.5 | nd | nd | 0.9 |
1,3-diethyl-5-methylbenzene (A) | 2050-24-0 | 32.56 | 5.09 | 84.4 | nd | nd | nd |
Benzaldehyde (D) | 100-52-7 | 548.84 | 87.8 | 84.0 | nd | 64.0 | 1.4 |
4-methyl-1-propan-2-ylcyclohexene (E) | 500-00-5 | 88.37 | 14.38 | 83.7 | nd | nd | nd |
methyl benzoate (D) | 93-58-3 | 49.61 | 8.09 | 83.7 | nd | 83.0 | 1.2 |
pentan-1-ol (D) | 71-41-0 | 20.16 | 3.3 | 83.6 | nd | 49.0 | 1.2 |
1,2,4-trimethylbenzene (A) | 95-63-6 | 10.85 | 1.8 | 83.4 | nd | 44.4 | 0.9 |
pyrimidine (C) | 289-95-2 | 86.82 | 14.68 | 83.1 | nd | 34.0 | nd |
an unknown isomer of diethyl methylbenzene (A) | - | 17.05 | 3 | 82.4 | nd | nd | nd |
1,2,4,5-tetramethylbenzene (A) | 95-93-2 | 82.17 | 14.98 | 81.8 | nd | 74.0 | 0.8 |
1-methyl-4-propan-2-yl-2-[(E)-prop-1-enyl]benzene (A) | 97664-18-1 | 20.16 | 3.9 | 80.7 | nd | nd | nd |
cumene (A) | 98-82-8 | 1.55 | 0.3 | 80.6 | 4428 | 35.6 | 0.9 |
5-methylfuran-2-carbaldehyde (D) | 620-02-0 | 6.2 | 1.2 | 80.6 | nd | 72.0 | nd |
2-methoxyphenol | 90-05-1 | 6.2 | 1.2 | 80.6 | nd | 82.0 | 1.3 |
unknown compound (E) | - | 3.1 | 0.6 | 80.6 | nd | nd | nd |
1-methylnaphtalene (B) | 90-12-0 | 1.55 | 0.3 | 80.6 | nd | 82.0 | nd |
3,3-dimethyl-2H-inden-1-one (B) | 26465-81-6 | 1.55 | 0.3 | 80.6 | nd | nd | nd |
unknown compound (E) | - | 27.91 | 7.19 | 74.2 | nd | nd | nd |
1-methyl-2-propylbenzene (A) | 1074-17-5 | 3.1 | 0.9 | 71.0 | nd | nd | nd |
2-methylpropanoic acid (D) | 79-31-2 | 1.55 | 0.6 | 61.3 | nd | 55.0 | nd |
undecan-2-one (internal standard) (E) | 112-12-9 | 1000.00 | 1000.00 | 0.0 | nd | nd | nd |
pentanoic acid (D) | 109-52-4 | 1.55 | 9.29 | −499.4 | nd | 96.0 | 1.6 |
1,4-diethyl-2-methylbenzene (A) | 13632-94-5 | 0.01 | 0.3 | −2900.0 | nd | nd | nd |
hexa-2,4-diene, (E,E)- (D) | 592-46-1 | 0.01 | 1.5 | −14,900.0 | nd | nd | nd |
1-methyl-4-propan-2-ylbenzene (A) | 99-87-6 | 0.01 | 2.1 | −20,900.0 | nd | 47.0 | nd |
Styrene (A) | 100-42-5 | 0.01 | 3.6 | −35,900.0 | 2982 | 31.1 | 0.9 |
Total | - | 14,503.88 | 1996.70 | 86.2 |
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Białowiec, A.; Micuda, M.; Szumny, A.; Łyczko, J.; Koziel, J.A. The Proof-of-the-Concept of Application of Pelletization for Mitigation of Volatile Organic Compounds Emissions from Carbonized Refuse-Derived Fuel. Materials 2019, 12, 1692. https://doi.org/10.3390/ma12101692
Białowiec A, Micuda M, Szumny A, Łyczko J, Koziel JA. The Proof-of-the-Concept of Application of Pelletization for Mitigation of Volatile Organic Compounds Emissions from Carbonized Refuse-Derived Fuel. Materials. 2019; 12(10):1692. https://doi.org/10.3390/ma12101692
Chicago/Turabian StyleBiałowiec, Andrzej, Monika Micuda, Antoni Szumny, Jacek Łyczko, and Jacek A. Koziel. 2019. "The Proof-of-the-Concept of Application of Pelletization for Mitigation of Volatile Organic Compounds Emissions from Carbonized Refuse-Derived Fuel" Materials 12, no. 10: 1692. https://doi.org/10.3390/ma12101692