Table 2. Summary of NH3 and VOC Emission Factor Data for Composting Raw Materials and Digestate.
| NH3 emission factors (kg NH3/kg of wet feedstock) |
VOC
emission factors (kg VOC/kg of wet feedstock) |
|||||
|---|---|---|---|---|---|---|
| feedstock | mean | median | sample size | mean | median | sample size |
| manure | 2.04 × 10–3 | 1.64 × 10–3 | 44 | 6.06 × 10–5 | 6.06 × 10–5 | 2 |
| OFMSW | 1.03 × 10–3 | 2.79 × 10–4 | 29 | 1.71 × 10–3 | 3.60 × 10–4 | 13 |
| sludge | 7.70 × 10–4 | 3.27 × 10–4 | 13 | 1.77 × 10–4 | 1.80 × 10–4 | 3 |
| yard waste | 8.91 × 10–5 | 2.50 × 10–5 | 5 | 5.23 × 10–4 | 4.62 × 10–4 | 4 |
| digestate | 5.50 × 10–4 | 6.22 × 10–5 | 25 | 1.16 × 10–4 | 3.72 × 10–5 | 11 |