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Articles 1 - 11 of 11
Full-Text Articles in Environmental Sciences
Energetyczne Wykorzystanie Stałych Paliw Wtórnych Z Odpadów (Srf) Na Przykładzie Instalacji Współspalania Paliw W Cementowni Chełm, Magdalena Kasietczuk, Robert Oleniacz
Energetyczne Wykorzystanie Stałych Paliw Wtórnych Z Odpadów (Srf) Na Przykładzie Instalacji Współspalania Paliw W Cementowni Chełm, Magdalena Kasietczuk, Robert Oleniacz
Robert Oleniacz
The paper presents the use of Solid Recovered Fuels (SRF) in Chelm Cement Plant (Poland). These types of fuels are produced from non-hazardous waste and can be used for energy recovery in waste co-combustion plants. They are much cheaper compared to primary fuels, so their use in the process of cement clinker burning brings evident economic benefits. Chelm cement plant owned by the CEMEX company is a leader in the use of alternative fuels in Poland. In the years 2005-2011 the amount of co-combustion of alternative fuels in the cement had risen from 107 to 318 thousand tons, and their …
Environmental Impacts Of Stover Removal In The Corn Belt, Alicia English, Wallace E. Tyner, Juan Sesmero, Phillip Owens, David J. Muth Jr.
Environmental Impacts Of Stover Removal In The Corn Belt, Alicia English, Wallace E. Tyner, Juan Sesmero, Phillip Owens, David J. Muth Jr.
David J. Muth
When considering the market for biomass from corn stover resources erosion and soil quality issues are important to consider. Removal of stover can be beneficial in some areas, especially when coordinated with other conservation practices, such as vegetative barrier strips and cover crops. However, benefits are highly dependent on several factors, namely if farmers see costs and benefits associated with erosion and the tradeoffs with the removal of biomass. This paper uses results from an integrated RUSLE2/WEPS model to incorporate six different regime choices, covering management, harvest and conservation, into a simple profit maximization model to show these tradeoffs.
Back To The Future Of Green Powered Economies, Juan B. Moreno-Cruz, M. Scott Taylor
Back To The Future Of Green Powered Economies, Juan B. Moreno-Cruz, M. Scott Taylor
Juan B. Moreno-Cruz
The purpose of this paper is to introduce the concept of power density [Watts/m2] into economics. By introducing an explicit spatial structure into a simple general equilibrium model we are able to show how the power density of available energy resources determines the extent of energy exploitation, the density of urban agglomerations, and the peak level of income per capita. Using a simple Malthusian model to sort population across geographic space we demonstrate how the density of available energy supplies creates density in energy demands by agglomerating economic activity. We label this result the density-creates-density hypothesis and evaluate it using …
Stimulating Learning-By-Doing In Advanced Biofuels: Effectiveness Of Alternative Policies, Xiaoguang Chen, Madhu Khanna, Sonia Yeh
Stimulating Learning-By-Doing In Advanced Biofuels: Effectiveness Of Alternative Policies, Xiaoguang Chen, Madhu Khanna, Sonia Yeh
Xiaoguang Chen
No abstract provided.
Explaining The Reductions In Us Corn Ethanol Processing Costs: Testing Competing Hypotheses, Xiaoguang Chen, Madhu Khanna
Explaining The Reductions In Us Corn Ethanol Processing Costs: Testing Competing Hypotheses, Xiaoguang Chen, Madhu Khanna
Xiaoguang Chen
No abstract provided.
Meeting The Mandate For Biofuels: Implications For Land Use, Food, And Fuel Prices, Xiaoguang Chen, Madhu Khanna, Haixiao Huang, Hayri Önal
Meeting The Mandate For Biofuels: Implications For Land Use, Food, And Fuel Prices, Xiaoguang Chen, Madhu Khanna, Haixiao Huang, Hayri Önal
Xiaoguang Chen
No abstract provided.
The Market-Mediated Effects Of Low Carbon Fuel Policies, Xiaoguang Chen, Madhu Khanna
The Market-Mediated Effects Of Low Carbon Fuel Policies, Xiaoguang Chen, Madhu Khanna
Xiaoguang Chen
No abstract provided.
Improving Biomass Logistics Cost Within Agronomic Sustainability Constratints And Biomass Quality Targets, Kevin L. Kenney, J. Richard Hess, William A. Smith, David J. Muth Jr.
Improving Biomass Logistics Cost Within Agronomic Sustainability Constratints And Biomass Quality Targets, Kevin L. Kenney, J. Richard Hess, William A. Smith, David J. Muth Jr.
David J. Muth
Equipment manufacturers have made rapid improvements in biomass harvesting and handling equipment. These improvements have increased transportation and handling efficiencies due to higher biomass densities and reduced losses. Improvements in grinder efficiencies and capacity have reduced biomass grinding costs. Biomass collection efficiencies (the ratio of biomass collected to the amount available in the field) as high as 75% for crop residues and greater than 90% for perennial energy crops have also been demonstrated. However, as collection rates increase, the fraction of entrained soil in the biomass increases, and high biomass residue removal rates can violate agronomic sustainability limits. Advancements in …
Economics Of Residue Harvest: Regional Partnership Evaluation, David W. Archer, David J. Muth Jr., Jacob J. Jacobson, Douglas L. Karlen
Economics Of Residue Harvest: Regional Partnership Evaluation, David W. Archer, David J. Muth Jr., Jacob J. Jacobson, Douglas L. Karlen
David J. Muth
Economic analyses on the viability of corn (Zea mays, L.) stover harvest for bioenergy production have largely been based on simulation modeling. While some studies have utilized field research data, most field-based analyses have included a limited number of sites and a narrow geographic distribution. An Iowa case study is developed illustrating the use of data extracted from a database of geographically distributed field studies for a region-specific economic analysis. The analysis utilizes grain and residue yield and associated management information from two Iowa field research sites that are Sun Grant Regional Partnership locations associated with the Corn Stover Regional …
Ogólnotechniczne Podstawy Biotechnologii Z Elementami Grafiki Inżynierskiej Ćw., Wojciech M. Budzianowski
Ogólnotechniczne Podstawy Biotechnologii Z Elementami Grafiki Inżynierskiej Ćw., Wojciech M. Budzianowski
Wojciech Budzianowski
No abstract provided.
Materiały Odstresowujące, Wojciech M. Budzianowski
Materiały Odstresowujące, Wojciech M. Budzianowski
Wojciech Budzianowski
No abstract provided.