نهاية المشروع الحضاري..السودان أكبر مصدر للعرقي البكر !!

Quote: It's clear that each time you fill up with ethanol, you're making an impact on the environment. Use this easy calculator to see how filling up with a tank of ethanol-enriched fuel can be beneficial by decreasing greenhouse gases. Fill up with ethanol, and we can all breathe a little easier. يلاحظ ان مادة MTBE المضافة للجازولين لتسهيل إحتراقه- لها مشاكل بيئية لانها سهلة الذوبان في الماء وتتسرب الي قاع المياه الجوفية من خزانات الوقود المدفونة (ما يحدث في طلمبات البنزين)! وهنا التركيب الكيميائي لمادة MTBE : Common Synonyms MTBE; 2-Methoxy- 2-methyl-propane U.S. EPA 1993a Molecular Formula C5H12O Chemical Structure CH3 | CH3-O-C-CH3 | CH3 ويبدو يا زكي ان شركات عملاقة في منتجات النفط وجيش من الكيميائيين يعالجون مشاكل المواد الملوثة المضافة للوقود البترولي مما يصعب معه التحول لميزات الايثانول النسبية,لكن الضارة من ناحية تأثيرها علي أسعار الغذاء ! What makes ethanol-enriched fuel better for the environment? Truth is, choosing ethanol-enriched fuel at the pump is one of the easiest ways you can help reduce pollution and help us all breathe a little easier! And unlike other alternatives that are being talked about and studied, fuel enriched with ethanol is available right now in many areas of the country. So you can do your part for the environment today. Better for the Air Ethanol is an oxygenate - meaning it contains oxygen - which helps regular gasoline burn more cleanly. That's why gasoline enriched with ethanol burns cleaner, more completely and more efficiently with lower carbon monoxide (CO) and harmful tailpipe emissions. Think of it! When you choose ethanol-enriched fuel, you'll improve the air we all breathe because ethanol: Reduces harmful tailpipe emissions of carbon monoxide (CO) by as much as 30%. Reduces particulate matter emissions by more than 25%. Reduces oxides of nitrogen. Reduces toxic emissions by 30%. Reduces exhaust volatile organic compounds (VOC) emissions by 12%. Reduces ozone-forming pollutants. That's why many cities with air-pollution problems require the use of oxygenated fuels like ethanol. The facts are clear: 10% ethanol-enriched fuel reduces carbon monoxide (CO) better than any other reformulated gasoline - by as much as 30%. Choosing even a 10% ethanol-enriched fuel results in a 35 - 46% reduction in greenhouse gas emissions. E85 has the highest oxygen content of any fuel available, making it burn more cleanly and more completely than any other fuel. Better for the Groundwater You may have heard about MTBE (Methyl Tertiary Butyl Ether) - a fuel oxygenate derived from petroleum - which used to be one of the best-selling oxygenates in the world. Today, MTBE is banned in many states because it has been shown to contaminate groundwater, and it is listed as a possible carcinogen. But don't worry. Ethanol is a great alternative because it's highly biodegradable and nontoxic

(عدل بواسطة عبداللطيف حسن علي on 07-03-2008, 07:16 PM)