Biogas production from catch crops: Increased yield by combined harvest of catch crops and straw and preservation by ensiling |
| |
| Affiliation: | 1. Section for Sustainable Biotechnology, Aalborg University Copenhagen, A C Meyers Vænge 15, 2450 Copenhagen, Denmark;2. Center for Bioproducts and Bioenergy, Washington State University, 2710 Crimson Way, Richland, WA 99354, USA;3. Agrotech – Institute for Agri Technology and Food Innovation, Agro Food Park 15, DK-8200 Aarhus N, Denmark;1. Department of Animal Science, Universidade Federal da Grande Dourados, Rodovia Dourados-Itahum, km 12, Zip Code: 79804-970, Dourados, MS, Brazil;2. Department of Biology, Universidade Federal da Grande Dourados, Rodovia Dourados-Itahum, km 12, Zip Code: 79804-970, Dourados, MS, Brazil;3. Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo (USP), Av. Duque de Caxias Norte, 225-Campus da USP, Zip Code: 13635-900, Pirassununga, SP, Brazil;4. Department of Animal Sciences, UNESP ? Universidade Estadual Paulista “Júlio de Mesquita Filho”/Campus Jaboticabal, Rod. Prof. Paulo Donato Castellane km 5, Rural, Zip Code: 14884-900, Jaboticabal, SP, Brazil;1. College of Engineering (Key Laboratory for Clean Renewable Energy Utilization Technology, Ministry of Agriculture), China Agricultural University, Beijing 100083, PR China;2. Yantai Institute, China Agricultural University, Yantai 264032, Shandong, PR China;1. Guangzhou Institute of Energy Conversion, CAS Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, PR China;2. Collaborative Innovation Centre of Biomass Energy, Henan Province, Zhengzhou 450002, PR China;3. University of Chinese Academy of Sciences, Beijing 100049, PR China;4. Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, PR China;1. Institute of Crop Science, University of Hohenheim, Fruwirthstrasse 23, 70599 Stuttgart, Germany;2. State Institute of Agricultural Engineering and Bioenergy, University of Hohenheim, Garbenstrasse 9, 70599 Stuttgart, Germany;1. Department of Energy Technologies, Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Via Anguillarese 301, 00123 Rome, Italy;2. Department of Sustainable Territorial and Production Systems, Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Via Anguillarese 301, 00123 Rome, Italy;1. Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China;2. CAS Key Laboratory of Renewable Energy, Guangzhou 510640, China;3. Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China;4. University of Chinese Academy of Sciences, Beijing 100049, China;5. Collaborative Innovation Centre of Biomass Energy, Zhengzhou 450000, China;6. MaREI Centre, Environmental Research Institute, University College Cork, Cork, Ireland |
| |
| Abstract: | The combination of catch crop cultivation with its use for biogas production would increase renewable energy production in the form of methane, without interfering with the production of food and fodder crops. The low biomass yield of catch crops has been shown as the main limiting factor for using these crops as co-substrate in biogas plants, since the profit obtained from the sale of methane barely compensates the harvest costs. Therefore, a new agricultural strategy to harvest catch crops together with the residual straw of the main crop was investigated, in order to increase the biomass and the methane yield per hectare. Seven catch crops harvested together with stubble from the previous main crop were evaluated. The effects of stubble height, harvest time and ensiling as a storage method for the different catch crops/straw blends were studied. Biomass yields as TS ranged between 3.2 and 3.6 t ha?1 y?1of which the catch crop constituted around 10% of the total biomass yield. Leaving the straw on the field until harvest of the catch crop in the autumn could benefit methane production from the straw both due to increased biomass yield and an increased organic matter bioavailability of the straw taking place on the field during the autumn months. Ensiling as a storage method could be feasible in terms of energy storage and guaranteeing the feedstock availability for the whole year. This new agricultural strategy may be a good alternative for economically feasible supply of catch crops and straw for biogas production. |
| |
| Keywords: | Catch crops Silage |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
