Environmental impacts of biofuels


Sahin Y.

ENERGY EDUCATION SCIENCE AND TECHNOLOGY PART A-ENERGY SCIENCE AND RESEARCH, cilt.26, ss.129-142, 2011 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 26 Konu: 2
  • Basım Tarihi: 2011
  • Doi Numarası: 10.3155/1047-3289.61.3.285
  • Dergi Adı: ENERGY EDUCATION SCIENCE AND TECHNOLOGY PART A-ENERGY SCIENCE AND RESEARCH
  • Sayfa Sayıları: ss.129-142

Özet

Today world is facing three critical problems: (1) high fuel prices, (2) climatic changes, (3) air pollution. There are several reasons for biofuels to be considered as relevant technologies by both developing and industrialized countries. They include energy security reasons, environmental concerns, foreign exchange savings, and socioeconomic issues related to the rural sectors of all countries in the world. The main advantages of using biomass and biomass derivatives in energy production are low sulfur, nitrogen and metal content and neutral CO2. Most traditional biofuels, such as ethanol from corn, wheat, or sugar beets, and biodiesel from oil seeds, are produced from classic agricultural food crops that require high-quality agricultural land for growth. Land use impacts were related to the area of land used, physical land use. Biofuels are oxygenated compounds. The oxygenated compounds such as ethanol, methanol and biodiesel provide more efficient combustion, and cleaner emissions. Most traditional biofuels, such as ethanol from corn, wheat, or sugar beets, and biodiesel from oil seeds, are produced from classic agricultural food crops that require high-quality agricultural land for growth. Aspect of impact category land use is an important parameter for biomass energy. This impact category describes the environmental impact resulting from land use for human activities. Results indicate that the transformations of biofuels are greater than those of fossil fuels, thus showing that a larger amount of resources is required to get the environmental friendly product. Ethanol made from biomass provides unique environmental, economic strategic benefits and can be considered as a safe arid cleanest liquid fuel alternative to fossil fuels Neat biodiesel and biodiesel blends reduce particulate matter (PM), hydrocarbons (HC) and carbon monoxide (CO) emissions and increase nitrogen oxides (NO) emissions compared with diesel fuel used in an unmodified diesel engine.