Biogas-past, present and future perspectives
Biogas production process is a well-established technology primarily for the production of renewable energy.The biogas process has been known since ancient times and was widely applied at domestic households for hundreds of years.Nowadays,the biogas process is not only exploited for energy purposes but also because of its environmental advantages.Waste and wastewater treatment has become a political priority in many countries.Biowastes,i.e.manures,agricultural or industrial organic wastes,as well as contaminated soils etc.,have traditionally been deposited in landfills or even worst dumped into the environment.Environmental awareness has however introduced strict legislations preventing these practices.For example,in European Union it is not permitted to dispose biodegradable organic matter to landfills.Treatment ofbiowastes by anaerobic digestion processes is in many cases the optimal way to convert organic waste into useful products such as energy (in the form of biogas) and soil conditioner (fertilizer).This practically means that after the extraction of the energy potential of the biowastes,the remaining inorganic matter,can be returned to the agricultural soils for providing all the necessary beneficial nutrients and maintaining humus and structure in soils.Traditionally,biogas has been used either directly for heat,cooking etc.or after combusting in a gas engine for combined heat and power production.Recent trends open new horizons for exploitation of biogas expanding its potential applications.For example,there is an increasing interest in biogas upgrading resulting in the generation of biomethane,which gives possibility for direct utilisation as transport fuel or injection to natural gas grid.Moreover,it is envisioned that a more advanced monitoring and control of the process is going to provide better utilisation of the treated biomasses.Finally,microbiology is going to play a more important role for tailoring the biogas process for specific feedstocks.
Anaerobic digestion biogas biowastes solid waste slurries manure industrial waste biomethane
Irini Angelidaki Panagiotis G.Kougias
Department of Environmental Engineering, Technical University of Denmark, Kgs.Lyngby, DK-2800, Denmark
国际会议
The 15th IWA World Conference on Anaerobic Digestion( 第15届IWA世界厌氧大会)
北京
英文
20-26
2017-10-17（万方平台首次上网日期，不代表论文的发表时间）