Anaerobic digestion (AD) is a biological process in which biodegradable organic matters are broken-down by microorganisms in the absence of oxygen into biogas, which consists of methane (CH4), carbon dioxide (CO2), and trace amount of other gases. AD typically converts the organic waste into biogas at an increasing rate for the first two weeks where the rate of conversion is constant until the organic source is consumed. AD is widely used to treat wastewater sludge and organic waste. Some of the advantages of applying AD are it s a renewable source of energy, reduces the emission of landfill gases and the nutrient rich solids left after digestion can be used as an organic soil amendment. AD is increasingly used as a technology that can deal with mixed organic waste streams (e.g. animal slurry, sewage, BMW, food processing wastes). The fibrous component of the digestate can be used as a soil improver or further composted to achieve a compost material suitable for horticultural, land reclamation and agricultural applications.
High Quality Content by WIKIPEDIA articles! AORA's Solar Flower Tower is a hybrid power generator that utilizes solar and alternative fuels, including diesel fuel, natural gas, liquefied natural gas, biogas, and other biofuels, to provide a constant green power source targeted for community-sized production. A module, dubbed the Solar Flower Tower due to the fact that it looks like a golden yellow tulip creates about 100 kW of electricity. The basis of the design is to use solar heated compressed air to spin a micro turbine. What makes the micro turbine unique is the efficiency of smaller power blocks, which allows small-scale construction, meaning simpler operation and less land needed.
Durch staatliche Regulationen finden in ländlichen Regionen einschneidende Veränderungen statt. Ein Beispiel dafür sind die Entwicklungen im Feld der Energieerzeugung aus Biomasse, die den Umbau konventioneller Agrarwirtschaft hin zu Energiewirtschaft vorantreibt. Es handelt sich nicht nur um eine wirtschaftliche, sondern auch um eine kulturelle Transformation. Was passiert, wenn sich Quantität oder Qualität der Energieflüsse ändern, und mit ihr die sozialen Arrangements und kulturellen Verständnisse, die sich durch ein bestimmtes Energie-Regime entwickelt haben? Diese Studie verdeutlicht, wie vielfältig die Chancen und das Scheitern einer Strategie der erneuerbaren Energie aussehen und wie deren langfristige Konzepte in kurzfristige, lokale Umsetzungsprozesse entflochten werden müssen.
Current global energy needs and the effort to substitute fossil fuels have led to extensive production of biomass in agricultural systems for purposes of renewable energy generation. At the same time, energy cropping poses new threats to the sustainability of land use systems. Large-scale industrialized farming in general and intensive energy crop production in particular are increasingly drawing criticism from various stakeholders for their negative external effects.Organic farming systems alleviate the environmental burden of agricultural production by minimizing negative this food-energy-climate nexus a large-scale conversion of agricultural area to organic management seems infeasible. Against this backdrop, this dissertation examined interrelations and connections of organic agriculture and biomass energy systems in regard to three dimensions: (i) Scientific interest and publication structure, (ii) research topics and contents, and (iii) systemic implications of integrated bioenergy and organic farming systems in the case of farm biogas production in Germany.
Our modern society s high dependence on fossil fuels is problematic because of climate change, energy security and depletion of finite energy resources. There is currently a strong demand to develop biofuels as a sustainable alternative. However, food and biofuel production may compete for the same crop land. Thus, the focus should be on second generation biofuels which are produced from non-food biomass. In this regard cultivation of seaweeds as an energy crop has a great potential. This book shows how bioethanol and biogas can be produced from brown seaweeds using fermentation and anaerobic degradation processes. The potential of large scale cultivation of macroalgae for biofuel production is discussed, and ideas for future research are presented. The book also has an epilogue where the transition away from fossil fuels is analysed using Ken Wilber s integral framework. This book is the definite reference for everybody interested in utilising seaweeds for bioenergy production.
The development of renewable sources of energy has recently generated considerable interest due to the energy crisis and global warming that it does not create competition for land used for food production. Sugarcane biomass is one of the worldwide food industry by-products which needs to be pretreated to explore energy recovery (biogas, biomethane, biohydrogen) in terms of biorefinery processing. Hydrothermolysis has proved to be one of the best thermal pretreatment which can be intensified a lot in terms of process regulation in the reactor before biogas technology. However, optimization of the pretreatment is necessary to monitor and regulate biodegradation of sugarcane bagasse during hydrothermolysis to reduce inhibition in anaerobic digestion.