and depends not only
on the parameters shown in Fig. 5 but also on the investment
and maintenance cost of the machines.
This cost range from US$12 to US$18 per ton of straw.
Similarly, assuming that the collected straw is for anaerobic digestion (Nguyen et al., 2016), the value of biogas generated (390 m3 t−1 of straw) for about 160 Liters
of kerosene is about US$160.
It means that straw collection cost only accounts for 8–13% of the output value of processing.