Xem 1-20 trên 51 kết quả Energy crop
  • Reasons for Market Development: High standards on technical development. Different standardized types of digesters and plant technologies. Consolidation of Dry Fermentation Technology. Automatisation of system control and operation. Enabling environment & economic incentives. Fixed Feed in Tarrifs guaranteed for 20 years, Energy Crop Bonus. Regulated grid access at reasonable cost.

    pdf18p nguyenngocsonctu 30-11-2010 41 8   Download

  • With shortages of fossil energy and heavy biomass energy use occurring in both developed and developing countries, a major focus has developed worldwide on renewable energy systems. Currently, a heavy focus is on biofuels made from crops, crop residues and wood. Though it may seem beneficial to use renewable plant materials for biofuel, their use raises many concerns about major environmental problems, including food shortages and serious destruction of vital soil resources.

    pdf513p chipmoon 19-07-2012 137 54   Download

  • The global annual potential bioethanol production from the major crops, corn, barley, oat, rice, wheat, sorghum, and sugar cane, is estimated. To avoid con/icts between human food use and industrial use of crops, only the wasted crop, which is de0ned as crop lost in distribution, is considered as feedstock. Lignocellulosic biomass such as crop residues and sugar cane bagasse are included in feedstock for producing bioethanol as well. There are about 73:9 Tg ofdry wasted crops in the world that could potentially produce 49:1 GL year−1 ofbioethanol.

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  • Landfill gas from a source of green energy, clean, renewable and can be used to create electricity, or used in the energy industry. This paper reviews the potential energy recovery landfill gas from municipal solid waste, to reducing methane emissions in particular, and reduced greenhouse gas emissions in general. In addition, this paper provides an assessment using the model of methane generated from landfill municipal solid waste and generate energy potential of gas recovered. In particular, this paper uses a life cycle assessment methods ......

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  • Metabolizable energy (ME) energy is used to denote the energy value of feed for poultry. ME can be expressed as values ​​of apparent metabolizable energy (AME). AME is used to determine the exchange energy food for birds. Vietnam Nehring methods used to estimate the AME value of the raw material fed to chickens. This method is usually the error is large and ...

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  • Although production costs of organic specialty crops can be higher than conventional production, some organic commodity crops have lower costs of production than the same conventional crops. A recent study of corn and soybean production in Iowa found that organic farms had lower fertilizer and pesticide costs, but higher seed and machinery costs. On the average, the total cost of organic production was slightly lower than that of conventional production.

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  • This book aspires to be a comprehensive summary of current biofuels issues and thereby contribute to the understanding of this important topic. Readers will find themes including biofuels development efforts, their implications for the food industry, current and future biofuels crops, the successful Brazilian ethanol program, insights of the first, second, third and fourth biofuel generations, advanced biofuel production techniques, related waste treatment, emissions and environmental impacts, water consumption, produced allergens and toxins....

    pdf0p ktcn_1 10-07-2012 94 20   Download

  • he goal is to provide tools for leaders to improve both the environmental performance and overall competiveness by reducing materials, energy and water utilization. Section 5 are papers related to sustainable environment: all aspects of ecosystem for sustainable development, ecological assessment and sustainability for the environment.

    pdf288p samsungwifi 09-04-2012 41 12   Download

  • Biofuels such as bioethanol are becoming a viable alternative to fossil fuels. Utilizing agricultural biomass for the production of biofuel has drawn much interest in many science and engineering disciplines. As one of the major crops, maize offers promise in this regard. Compared to other crops with biofuel potential, maize can provide both starch (seed) and cellulosic (stover) material for bioethanol production.

    pdf7p nguyenngocsonctu 30-11-2010 49 11   Download

  • The sustainability and prosperity of the ancient civilizations of China, Egypt, Babylonia, Phoenicia, Persia and Roma were based on the extensive use of water for human consumption, crop irrigation, canal navigation and energy generation. Today, the worldwide scarcity of water and clean energy constitutes a central and critical problem for the whole humankind. This situation is aggravated as industrial, agricultural and municipal effl uents reach the water bodies, or the coastal seawater that is used as feed for desalination plants.

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  • IN BOTH NATURAL AND AGRICULTURAL CONDITIONS, plants are frequently exposed to environmental stresses. Some environmental factors, such as air temperature, can become stressful in just a few minutes; others, such as soil water content, may take days to weeks, and factors such as soil mineral deficiencies can take months to become stressful. It has been estimated that because of stress resulting from climatic and soil conditions (abiotic factors) that are suboptimal, the yield of field-grown crops in the United States is only 22% of the genetic potential yield (Boyer 1982).

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  • At the same time, by comparing over time, case studies document that well-executed investments can provide benefits. These accrue through four main channels, namely (i) social infrastructure, often supported by community development funds using land compensation; (ii) employment and jobs; (iii) access to markets and technology for local producers; and (iv) local or national tax revenue. In all cases, economic viability of investment is a necessary condition for positive social outcomes to materialize, including food security.

    pdf484p thieubaotrang 23-04-2013 38 7   Download

  • Theimpactonthenaturalhabitatisofgreatconcernatpresent.Increasingdemandcouldforce thedestructionofnaturalhabitats,breedinggrounds,removalofwintercover,shelterbedsfor somespecies.Mechanizationofagriculturesawthedestructionofnests,burrows,etc.Similar impactbutwithgreaterintensitycanbeexpectedtoresultfromenergycropplantations. Extendingenergycropfarmingintounusable,nonagriculturallandcanhaveanegativeimpact on that particular eco system.

    pdf33p loixinloi 08-05-2013 31 5   Download

  • Dams and particle separation is important in the process of harvesting rice (rice; wheat) and energy intensive. There have been many studies on various parts of the dam to improve your drum beats combine harvesters were introduced in recent years. Research division beating drums beating two types of tangential to the direction tangential feed was made in 2007 with the aim of: increasing particle separation distribution of the dam, the dam reduced energy costs, reduce the impact split ...

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  • Revenue insurance accounts for more than half of all crop insurance policies (Figure 2). It began in 1997 as a buy-up option on a pilot basis for major crops. By 2003, acreage under revenue- based insurance exceeded acreage covered by APH policies. Revenue insurance combines the production guarantee component of crop insurance with a price guarantee to create a target revenue guarantee. Under revenue insurance programs, participating producers are assigned a target level of revenue based on market prices for the commodity and the producer’s yield history.

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  • The Commission stresses the need for a differentiated and calibrated approach which is adapted and proportionate to the size and characteristics of both the audited company and its auditor and will seek, in the case of any potential proposal that may emerge as a result of this Green Paper, to modulate any such proposals to take this into account. What may be necessary for large systemic institutions may not be appropriate for other listed companies or for SMEs or SMPs. Any measures which the Commission would propose as a follow-up to the present consultation would be subject to ...

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  • Sources of organic matter include leaves, twigs and other plant residues. A constant replenishmentoforganicmatterisessentialtomaintainahealthysoil.Bioenergycropscanbe animportantsourceoforganicmatter.Husksandpresscakesofmanynontoxicenergycrops canbeusedasasourceoforiginmattertomaintainaconstantcycleofreplenishment. Soilacidity/alkalinity,moisturecontentandotherfactors influencethechemicalqualityofthe soil.

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  • Some energy crop species are rich in toxic chemicals (such as allelochemicals in Jatropha). These toxic oilseed crops can enter the food chain inmanyways. Research studies on the toxicity have highlighted the potential negative impacts on the ecosystem, including other plantsthatmightgrowinthevicinity. Pesticidesimpacttheenvironmentatseverallevels(fromproductionoffertilizerstocultivation ofenergycrops).Studiesshow that theenvironmental footprint iscomparatively largerduring the cultivation process.

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  • Replacing agricultural land for energy crop plantations, as the former lack proper structure (becauseoffollowingmonoagriculturalpattern)cannotbejustifiedbyanypossibleterms.The biodiversitythatenergycropssupportcanhaveapositiveimpactononetypeofspecieswhere acompletelyharmfulimpactonanother. Plantingnonindigenouscrops for thesake for increasingproductionandprofitmayharm the localbiodiversityevenfurther.Oftennonindigenouscropsdestroythenatural landscapeand may lead to fragmentationof theecologicaldiversity.

    pdf86p loixinloi 08-05-2013 16 4   Download

  • We also believe that high quality design should play akey role in minimising any adverse effects of projects,whether this is directed at the disposition of windturbines and energy crops in the landscape or thepositioning of photo-voltaic cells on historic buildings.Fundamental to achieving high quality design will be asound understanding of the character and importanceof the historic asset involved,whether at the scale ofindividual buildings and sites or more extensive historicareas and landscapes.

    pdf388p yeurauxanh88 01-10-2012 26 3   Download

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