Showing posts with label Methane. Show all posts

Monday, June 29, 2015

IndustrialHemp Methane Energy Yield Harvest Times

Article

Anaerobic digestion of industrial hemp–Effect of harvest time on methane energy yield per hectare

Biomass and Bioenergy (Impact Factor: 3.41). 02/2011; 35(2):893-900. DOI: 10.1016/j.biombioe.2010.11.005

ABSTRACT There is a worldwide emphasis to increase the share of renewable transportation fuels. When using agricultural land for production of renewable transportation fuels, the energy output per hectare for different crops and transportation fuels is a crucial factor. In this study, the gross methane energy yield per hectare from anaerobic digestion of industrial hemp (Cannabis sativa L.), was determined at four different harvest times between July and October in Southern Sweden, a cold climate region. The biomass yield was determined for three years and the methane yield was determined for two years through the biochemical methane potential test.

The highest biomass yield, 16 tonnes dry matter per hectare on an average, and the highest methane energy yield per hectare was achieved when the hemp was harvested in September or October, with an average gross methane energy yield of 136 ± 24 GJ per hectare.
There was no significant difference in the specific methane yield between the harvest times; the average being 234 ± 35 m3 per tonne volatile solids.
Biogas from hemp turned out to be a high yielding alternative to the currently dominating renewable transportation fuels produced from crops grown in Sweden: ethanol from wheat and biodiesel from rapeseed.

Anaerobic digestion of industrial hemp–Effect of harvest time on methane energy yield per hectare (PDF Download Available). Available from: http://www.researchgate.net/publication/251628713_Anaerobic_digestion_of_industrial_hempEffect_of_harvest_time_on_methane_energy_yield_per_hectare [accessed Jun 29, 2015].

Hemp Seed as Cattle and Ruminant Feed Page 12

Hemp seed-cake has been used for fattening cattle with gains reported at 6 pounds 9.2 ounces/3 kg/day & adult sheep 0.5 kg per day. The digestive system also works in a more balanced manner when feeding hemp seed cake compared to soybean meal which is shown by a higher faecal consistency and DM concentration and a smaller number of long particles in the faecal matter from the experiment with the steers (Reducing the Methane emissions).

https://t.co/Col9tcXpIR The digestive system also works in a more balanced manner when feeding hemp seed cake compared to soybean meal-higher faecal consistency, DM concentration, smaller number of long particles in the faecal matter (Reducing the Methane emissions).
— Scotty (@StLHandyMan) February 12, 2019

Hempseed cake is a suitable alternative to soybean meal as a protein feed for growing cattle because hempseed cake gives similar growth and carcass traits as soybean meal. From the results with calves, there is an indication that hempseed cake gives a higher feed intake, similar growth and lower feed conversion compared to calves given soybean meal. Hemp seed-cake has been used for fattening cattle with gains reported at 6 pounds 9.2 ounces/3 kg/day & adult sheep 0.5 kg per day. The digestive system also works in a more balanced manner when feeding hemp seed cake compared to soybean meal which is shown by a higher faecal consistency and DM concentration and a smaller number of long particles in the faecal matter from the experiment with the steers (Reducing the Methane emissions).

Article Sources: http://mohemp.blogspot.com/2015/06/hempseed-animal-food-nutritional.html

http://mohemp.blogspot.com/2015/06/conclusion-hempseed-cake-as-cattle-feed.html

Scotty @StLHandyMan

Milk from Industrial Hemp seed when fed to dairy cows declared safe by EU Food Safety Division http://www.thegrocer.co.uk/buying-and-supplying/food-safety/milk-from-cannabis-seed-fed-cows-declared-safe/520740.article …?