Figure 1.
![Municipal waste management in the EU in 2016 [3]](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/64706ed383f1392090d69738/j_acee-2018-062_fig_001.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20251206%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20251206T150319Z&X-Amz-Expires=3600&X-Amz-Signature=69aaf85d2d053bb8940b8e2ad36621472210c9b91c3cc80fefc3e526a6da3519&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Figure 2.
![The share of substitution of conventional fuels with alternative fuels from the waste in the cement industry [4]](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/64706ed383f1392090d69738/j_acee-2018-062_fig_002.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20251206%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20251206T150319Z&X-Amz-Expires=3600&X-Amz-Signature=0f2ec09c1955e5c1d1f800739745936f7ef64b6c9cb15baee9273d85544e5791&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Figure 3.
![The morphological composition of alternative fuels used in the cement industry, data from 2014 [17]](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/64706ed383f1392090d69738/j_acee-2018-062_fig_003.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20251206%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20251206T150319Z&X-Amz-Expires=3600&X-Amz-Signature=0d68ff8c4027ed3c8aa9b75233f2a277eca589e0848c563f400e499870da940f&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Preferred parameters of an alternative fuel [9]
| Parameter | Unit | Value |
|---|---|---|
| Moisture content | % | <20 |
| Calorific value | MJ/kg | >15 |
| Sulphur content | % | <1 |
Requirements for the quality of the alternative fuel dosed to the calciner and the main burner in the selected cement plant [6]
| Requirements | Unit | Cement plants status for 2017 |
|---|---|---|
| Arsenic | ppm | < 10 |
| Cadmium | ppm | < 20 |
| Tal | ppm | <10 |
| Antymony | ppm | < 50 |
| Cobalt | ppm | < 50 |
| Nickel | ppm | < 50 |
| Fluoride | ppm | <100 |
| Lead | ppm | < 250 |
| Chromium | ppm | < 250 |
| Copper | ppm | < 250 |
| Manganese | ppm | < 250 |
| Vanadium | ppm | < 250 |
| Scrap content | % | up 0.5% |
Exemplary requirements set by cement plants for alternative fuels [6]
| Requirements | Unit | Cement plants status for 2008 | Cement plants status for 2015 | Cement plants status for 2017 |
|---|---|---|---|---|
| Bulk density | [kg/m3] | - | - | 150-200 |
| Moisture content | [%]mas. | ≤15 | ≤18 | ≤20 |
| Ash | [%]mas. | ≤20 | - | <20 |
| The calorific value of the fuel going to the calciner | [MJ/kg] | ≥18 | ≥18.5 | ≥16 |
| The calorific value of the fuel going to the main burner | [MJ/kg] | ≥21 | ≥21 | ≥21 |
| Chlorine | [%]mas. | ≤0.8 | < 0.7 | ≤0.8 |
| Sulfur | [%]mas. | ≤0.5 | < 0.5 | <0.5 |
| Mercury | [mg/kgsm] | <5 | < 2 | <0.5 |
| Metal content: Sb+As+Pb+ | ||||
| Cr+Co+Cu+Mn+Ni+V | [mg/kgsm] | <2500 | <2500 | <1000 |
| Metal content: Cd+Th+Hg | [mg/kgsm] | - | <10 | - |
| Metal content: Cd + Tl | [mg/kgsm] | < 50 | - | <30 |
Metals content in selected wood wastes
| Value | Unit | Floor panels | Door leaf |
|---|---|---|---|
| Arsenic | ppm | 0.05 | 0.03 |
| Cadmium | ppm | 0.15 | 0.17 |
| Tal | ppm | - | - |
| Antimony | ppm | - | - |
| Cobalt | ppm | 1.40 | 0.67 |
| Nickel | ppm | 0.62 | 0.79 |
| Lead | ppm | 1.07 | 0.61 |
| Chrome | ppm | 1.74 | 1.53 |
| Copper | ppm | 2.24 | 2.84 |
| Manganese | ppm | 88.92 | 97.45 |
| Vanadium | ppm | - | - |
| Mercury | ppm | <0.1 | <0.1 |
Values of classification parameters for the solid derived fuels according to CEN [1, 12]
| Classification Property | Designation | Unit | Classes | ||||
|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | |||
| Net calorific value | NCV | MJ/kg ar | 25 | 20 | 15 | 10 | 3 |
| Chlorine | Cl | % d mean | 0.2 | 0.6 | 1.0 | 1.5 | 3.0 |
| Mercury | Hg | median mg/MJ ar | 0.02 | 0.03 | 0.08 | 0.15 | 0.50 |
| 80th percentile mg/MJ ar | 0.04 | 0.06 | 0.16 | 0.30 | 1.00 | ||
Physicochemical properties of selected post-consumer wood waste
| Floor woodwork | ||||||
|---|---|---|---|---|---|---|
| Parameter | Unit | Floor panels | Silencing panels | Waterproof panles | Natural bamboo floor | Parquet floor |
| Carbon | % | 48.64 | 34.02 | 65.90 | 49.68 | 60.00 |
| Hydrogen | % | 4.18 | 1.51 | 3.10 | 4.99 | 4.41 |
| Oxygen | % | 28.05 | 46.54 | 21.59 | 36.85 | 27.36 |
| Nitrogen | % | 12.56 | 6.95 | 0.06 | 0.04 | 0.15 |
| Sulphur | % | 0.18 | 0.03 | 0.40 | 0.55 | 0.17 |
| Chlorine | % | 0.34 | 0.76 | 0.36 | 0.73 | p.o. |
| Moisture content | % | 5.08 | 3.55 | 3.11 | 5.97 | 7.90 |
| Ash content | % | 0.97 | 6.64 | 5.48 | 1.49 | 0.10 |
| Valatile parts | % | 75.02 | 66.63 | 87.28 | 72.81 | 69.70 |
| Heat of combustion | MJ/kg | 19.10 | 18.61 | 27.76 | 16.46 | 20.23 |
| Calorific value | MJ/kg | 18.04 | 18.18 | 26.90 | 15.18 | 19.16 |