Abstract
There is not enough land for the current bioenergy production process because of its low annual yield per unit land. In the present paper, an integrated biomass production and conversion process for sustainable bioenergy is proposed and analyzed. The wastes from the biomass conversion process, including waste water, gas and solid are treated or utilized by the biomass production process in the integrated process. Analysis of the integrated process including the production of water hyacinth and digestion for methane in a tropical area demonstrates several major advantages of the integrated process. (1) The net annual yield of methane per unit land can reach 29.0 and 55.6 km3/h for the present and future (2040) respectively, which are mainly due to the high yield of water hyacinth, high biomethane yield and low energy input. The land demand for the proposed process accounts for about 1% of the world’s land to meet the current global automobile fuels or electricity consumption; (2) A closed cycle of nutrients provides the fertilizer for biomass production and waste treatment, and thus reduces the energy input; (3) The proposed process can be applied in agriculturally marginal land, which will not compete with food production. Therefore, it may be a good alternative energy technology for the future.
Highlights
Energy security and emission of massive quantity of CO2 associated with the greenhouse effect of present energy infrastructure have raised attention to the bioenergy [1,2]
There is no net CO2 emission if the proposed process is applied to produce electricity or methane, because carbon dioxide is utilized for photosynthesis in the biomass production and recycled for plant growth, it offset the generation of carbon dioxide from the burning of the methane for power generation or as biofuel of automobiles
CO2 can be used to promote the yield of the biomass, it will reduce the land requirement and emission of the greenhouse gas in the present process as the carbon dioxide produced in the bioconversion process is recycled to the greenhouse for biomass production
Summary
Energy security and emission of massive quantity of CO2 associated with the greenhouse effect of present energy infrastructure have raised attention to the bioenergy [1,2]. Biofuel based on agriculturally degraded lands to produce grass or wood [7] has low biomass yield [8] Conversion of these lignocellulosic biomass to bioethanol or synthesis fuel [9] has low efficiency and high energy input [10]. Both of them result in the low net annual biofuel yield per unit land, such as. To overcome the environmental challenges and land limitation associated with bioenergy, we propose to integrate the biomass production and conversion process to obtain high bioenergy yield so. We estimate the net energy of the processes produced in a unit land over a year
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
