Global emission

Recent legislation sets near-zero limits for evaporative emission globally (EURO 11, 111/2000, and GARB). 

USEPA] US Environmental Protection Agency. 2004b. URL http //www.epa.gov/mercury/ control emissions/global.htm, updated May 2005. 

Huang Y, Sass RL, Fisher FM. Methane emission from Texas rice paddy soils. 2. Seasonal contribution of rice biomass production to CH4 emission. Global Change Biol. 1997 3 491-500. 

Pichevin, L., Bard, E., Martinez, P., and BiUy, I. (2007). Evidence ofventilation changes in the Arabian Sea during the late Quaternary Implication for denitrification and nitrous oxide emission. Global Biochemical Cycles 21, doi 10.1029/2006GB002852. 

Approximately, 1.6 billion tons of Portland cements are produced worldwide annually with an estimated 5% generation of the C02 emission. Global cement and concrete additives (fiber and chemical additives) demand is forecast to grow 6.3% annually through 2006, driven by construction and by higher standards for concrete that require more additives per ton [4],... 

Smith, S. (2001) Global and regional anthropogenic sulfur dioxide emissions. Global and Planetary Change 29, 99-119... 

Global emissions = emissions from on-site utilities... 

Increased energy efficiency. Increasing energy efficiency and the introduction of cogeneration reduce CO2 emissions. Remember that emissions should be viewed on a global basis, as discussed in Chap. 10. 

Increase energy efficiency of the process. Increasing the energy efficiency decreases the fuel burnt and hence decreases SO, emissions at the source. Again, the emissions should be viewed on a global basis. 

Perhaps the biggest environmental challenge for ironmaking processes into the twenty-first century involves responding to the concerns about global warming. Ironmaking processes require the use of carbon-based reductants, and ultimately result in the emission of carbon dioxide. 

Global demand for electricity can be expected to eventually increase substantially over the levels of the mid-1990s. In that event, only a massive expansion in the use of biomass and other nonfossil fuel sources can slow the aimual increase in global CO2 emissions. 

Plant nutrient sulfur has been growing in importance worldwide as food production trends increase while overall incidental sulfur inputs diminish. Increasing crop production, reduced sulfur dioxide emissions, and shifts in fertilizer sources have led to a global increase of crop nutritional sulfur deficiencies. Despite the vital role of sulfur in crop nutrition, most of the growth in world fertilizer consumption has been in sulfiir-free nitrogen and phosphoms fertilizers (see Fertilizers). 

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