| 1. |
- Van Dijk, H. A. J., et al.
(författare)
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Cost Effective CO2 Reduction in the Iron & Steel Industry by Means of the SEWGS Technology : STEPWISE Project
- 2017
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Ingår i: Energy Procedia. - : Elsevier BV. - 1876-6102. ; , s. 6256-6265
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Konferensbidrag (refereegranskat)abstract
- In the STEPWISE project, the Sorption Enhanced Water-Gas Shift (SEWGS) technology for CO2 capture is brought to TRL6 by means of design, construction, operation and modelling a pilot installation in the Iron and Steel industry using Blast Furnace Gas (BFG). This advanced CO2 removal technology makes use of regenerative solid adsorbents. The STEPWISE project represents the essential demonstration step within the research, development and demonstration trajectory of the SEWGS technology. This project will further reduce the risks associated with scaling up the process.
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| 3. |
- Watson, C.A., et al.
(författare)
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A review of farm-scale nutrient budgets for organic farms as a tool for management of soil fertility
- 2002
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Ingår i: Soil use and management. - 0266-0032 .- 1475-2743. ; 18:SUPPL., s. 264-273
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Tidskriftsartikel (refereegranskat)abstract
- On organic farms, where the importation of materials to build/maintain soil fertility is restricted, it is important that a balance between inputs and outputs of nutrients is achieved to ensure both short-term productivity and long-term sustainability. This paper considers different approaches to nutrient budgeting on organic farms and evaluates the sources of bias in the measurements and/or estimates of the nutrient inputs and outputs. The paper collates 88 nutrient budgets compiled at the farm scale in nine temperate countries. All the nitrogen (N) budgets showed an N surplus (average 83.2 kg N ha-1 yr-1). The efficiency of N use, defined as outputs/inputs, was highest (0.9) and lowest (0.2) in arable and beef systems respectively. The phosphorus (P) and potassium (K) budgets showed both surpluses and deficits (average 3.6 kg P ha-1 yr-1, 14.2 kg K ha-1 yr-1) with horticultural systems showing large surpluses resulting from purchased manure. The estimation of N fixation and quantities of nutrients in purchased manures may introduce significant errors in nutrient budgets. Overall, the data illustrate the diversity of management systems in place on organic farms, and suggest that used together with soil analysis, nutrient budgets are a useful tool for improving the long-term sustainability of organic systems.
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