The corn stover should be stored under the conditions of keeping its normal amount of moisture against rain and soaking from the ground, avoiding decay and ensuring protection against fire. The selection of a storage type will depend on location and local conditions. The corn stover can be stored in open storage, tarped storage, permanent structure storage or anaerobic storage. Several factors should be considered when selecting appropriate storage systems: feedstock stability during storage, cost of storage infrastructure, accessibility of feedstock during the entire storage duration, integration of storage platform with processing plant.
The storage of biomass in permanent structures offers...Read more
The economic feasibility of corn residues harvesting depends on capital (key element) and operating costs.
Capital expenditure is the cost of purchasing equipment. Operating costs are the costs of fuel, amortization, maintenance and repair, materials and labor. Operating costs considerably depends on machinery productivity and the distance of transportation of bales from the field to the central storage facility.
According to the corn stover harvesting cost estimation results, the net cost of collected biomass on the storage facility can be from 22.3 EUR/t d.m. Following storage and densification in briquettes or pellets will increase the added value of the corn stovers.
Prepared by:...Read more
In addition to the technologies for harvesting corn residues in bales described in the previous article, this biomass can be also:
pressed into rolls using a roll baler instead of a baler of rectangular bales;
collected in a crushed form as a mixture of different fractions of plant residues;
collected in a crushed form in a separate fraction of plant residues, such as rods.
Prepared by: Semen Drahniev – Member of the Expert Council of the Bioenergy Association of Ukraine for the platform of sustainable agribusiness SAF Ukraine.
Technologies for harvesting corn and corn residues (in bales). Semen Drahniev. The platform of sustainable agribusiness SAF Ukraine. October 15th, 2019.
The Bioenergy...Read more
There are several technological schemes for harvesting grain corn. Currently, the main method for harvesting commercial corn is combine threshing of ears in the field, shredding and spreading of the cut biomass with the use of combine harvesters equipped with corn reapers. This method of harvesting grain corn is the most economically feasible. In comparison with harvesting ears, the method provides 1.8-2 times decrease in labor costs and 20-25% reduction in fuel consumption. Only a few agricultural enterprises (seed factories) collect corn as non-threshed ears with the following stationary threshing, which makes it possible to collect cobs. The seed factories...Read more