TAILIEUCHUNG - Encyclopedia of Global Resources part 15

Encyclopedia of Global Resources part 15 provides a wide variety of perspectives on both traditional and more recent views of Earth's resources. It serves as a bridge connecting the domains of resource exploitation, environmentalism, geology, and biology, and it explains their interrelationships in terms that students and other nonspecialists can understand. The articles in this set are extremely diverse, with articles covering soil, fisheries, forests, aluminum, the Industrial Revolution, the . Department of the Interior, the hydrologic cycle, glass, and placer mineral deposits. . | 110 Biofuels Global Resources exists. The most attractive for industrial applications is H2 production by photosynthetic microbes. These microorganisms such as microscopic algae cyanobacteria and photosynthetic bacteria use sunlight as an energy source and water to generate hydrogen. Butanol can be produced by the fermentation of sugars similar to the ethanol production. The most well-known pathway of butanol generation is fermentation by bacterium Clostridium acetobutylicum. Substrates utilized for butanol production starch molasses cheese whey and lignocellulosic materials are exactly the same as for ethanol fermenta- This Volvo car runs on bioethanol a biofuel manufactured from common household trash. AP Wide World Photos tion. The biological production by fermentation is not economically attractive because of low levels of product concentrations and high cost of product recover y compared to the chemical process. Uses of Biofuels With increasing energy demands and oil prices ethanol has become a valuable option as an alternative transportation fuel. The Energy Policy Act of 2005 included a requirement to increase the production of ethanol from 15 to 28 billion liters by 2012. Beginning in 2008 a majority of fuel stations in the United States were selling gasoline with 10 percent ethanol in it. Nearly all cars can use E10 fuel that is 10 percent ethanol. Blending ethanol with gasoline oxygenates the fuel mixture which burns more completely and produces fewer harmful CO emissions. Another environmental benefit of ethanol is that it degrades in the soil whereas petroleum-based fuels are more resistant to degradation and have many damaging effects when accidentally discharged into the environment. However a liter of ethanol has significantly less energy content than a liter of gasoline so vehicles must be refueled more often. Ethanol is also more expensive than gasoline although rising prices of gasoline could cancel that disadvantage. In addition carcinogenic .

TỪ KHÓA LIÊN QUAN
TÀI LIỆU MỚI ĐĂNG
TAILIEUCHUNG - Chia sẻ tài liệu không giới hạn
Địa chỉ : 444 Hoang Hoa Tham, Hanoi, Viet Nam
Website : tailieuchung.com
Email : tailieuchung20@gmail.com
Tailieuchung.com là thư viện tài liệu trực tuyến, nơi chia sẽ trao đổi hàng triệu tài liệu như luận văn đồ án, sách, giáo trình, đề thi.
Chúng tôi không chịu trách nhiệm liên quan đến các vấn đề bản quyền nội dung tài liệu được thành viên tự nguyện đăng tải lên, nếu phát hiện thấy tài liệu xấu hoặc tài liệu có bản quyền xin hãy email cho chúng tôi.
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.