Bioethanol REsearch : Bioethanol of Cassava More Superior

' Machine so it feels lighter , " said Dr. Agus Eko Tjahjono , motorists bioethanol . Since 2 years ago Agus who also heads the Center for Technology Pati use B15 bio-ethanol mixture . That is, the total capacity of 80 liter tank of his car , filled with 68 liters of petrol that is mixed 12 liters of ethanol from cassava . According to an alumnus of Hiroshima University , Japan , with increased ethanol power so that the pull of the engine lubrication lighter .
That 's just one of the advantages oplosan gasohol and gasoline - ethanol blends , red , ' said Prawoto , head of Institute of Thermodynamics , Motor , and Propulsion ( TMP ) , BPPT , Serpong . The effectiveness of fuel from fermented cassava has been proved in a room measuring 15 mx 10 m at the Laboratory of TMP BPPT .
Not only the rate of bio -fuel engines oplosan tested , but also the comparison with fossil fuels . Oil that is pure gasoline , oil, oil mixed with gasoline ethanol 3 , 10 , 20 % , ( hereinafter referred to as E3 , E10 , and E20 ) . Research using a vehicle that runs on the (idle ) and direct application on the road .

When idle , the test involves two things: the testing of performance such as traction force , power , speed and fuel consumption and exhaust emission testing as carbon monoxide , hydrocarbons , and nitrogen oxides . Prior to counting , environmental conditions must be at a temperature of 25oC and a pressure of 100 kPa . After a full step on the gas pedal , the speed increases until it reaches 30 km / h , the condition is stabilized for 5 seconds for data retrieval . Speed ​​is then increased to 40 , 50 , 70 , and 80 km / h .

According to Dr Prawoto , head of the testing of bioethanol and petrol , the addition of ethanol to gasoline has been known to be effective as a material forming or oxygenated fuels with carbon- hydrogen - oxygen . Usually lead, aromatics , olefins / diolefins and butane into mixing chemicals used . Unfortunately , the impact is more visible ; proven to reduce children's intelligence lead , benzene causes cancer . It is therefore very important replacing chemicals with environmentally friendly materials . Hall lab test results BPPT TMP , ethanol proved to have better characteristics . Here are some test parameters .
Carbon monoxide ( CO )
CO emission bio-ethanol fueled cars E3 1.35 % ppm; E10 , 1.38 %, and E20 , 0.76 % . That means that CO emissions will decrease with the addition of ethanol . The addition of 10 % ethanol can reduce emissions of CO emissions by 70 % . Because the exhaust emissions of CO gas value reached 4.51 % . The lack of waste compounds that can trigger cancer cells that may improve the quality of fresh air . Excessive inhalation of carbon dioxide can bind to hemoglobin in the blood that interfere with concentration .

Nitrogen oxides ( NOx )

Unfortunately , the decline in the amount of CO emission is not accompanied by a decrease in the value of nitrogen oxides ( NOx ) . Effluent nitrogen oxide triggers global warming on higher ethanol reached at E3 1272 ppm , 1078 ppm on the E10 , the E20 and 1870 ppm . Whereas gasoline contains only 953 ppm NOx .
The high emissions of NOx can be overcome because , 'Engines of vehicles are now equipped catalytic converter , " said Soni Sulistia Wirawan , BPPT researchers . Catalytic converter is egg -shaped ceramic clad steel or platinum . Function decreases the amount of nitrogen oxide emissions . Molecule that touches NOx reduction catalyst bound catalyst then converted to nitrogen dioxide . While O2 is released into the air .

Hydrocarbons

By E20 , the hydrocarbon exhaust emissions 1 % lower than pure gasoline . Double impact of low hydrocarbon emissions . Positive impact on human health . Hydrocarbons trigger danger of intelligence , reproductive health , and symptoms of headache in humans . As for engine durability.