+ Publier publicitaire GRATUIT !
Stats d'annonce: Dernier 24h - 42, actuel - 951, total - 80050

Emissions from ethanol production may be way worse than we thought

22 Septembre 2016 - Autoblog

Ethanol production

Volkswagen may not be alone when it comes to underestimating or underreporting nitrogen-oxide (NOx) emissions levels.

US ethanol producers are likely using outdated methods to measure NOx levels, according to trade publication Ethanol Producer. The result is that production of ethanol, which as a fuel has been a source of debate over its environmental friendliness when compared to conventional gasoline, may be more harmful to the environment than previously thought.

The issue stems from the Clean Air Act and the way it measures nitrogen dioxide (NO2) as a "surrogate" for NOx. Four decades ago, NO2 was thought to account for between five and 20 percent of NOx emissions. Because of inaccuracies in calibration methods, however, that assumption is incorrect, and NO2 may account for more than 80 percent of NOx's emissions. In short, ethanol factories and the resulting NOx levels may be creating ozone and causing problems such as acid rain at a faster rate than was previously estimated.

Such findings mark yet another argument against the assumption that ethanol and other biofuels may be better for the environment than gasoline. Late last month, the University of Michigan said in a study that US regulators have incorrectly been assuming that biofuels' tailpipe emissions were negligible because its carbon dioxide was offset by the growth of the corn and other plant matter being used for the fuel. It should be noted that the report was funded by the American Petroleum Institute, but report author and University of Michigan Energy Institute research professor John DeCicco said the study was peer-reviewed.

Additionally, the Environmental Protection Agency's (EPA) Office of the Inspector General said last month that the regulator hasn't filed a report on the environmental impact of biofuels in five years, further muddying the issue.

Nouvelles par Tags

2011 models2012 models3D printing458 italia6-series coupeA1A2abc motorsabu dhabiaccidentaccidentsaccordACIMacuraadvertisingafricaairbagairbagsairbusairportalcotestalfaalfa romeoalgeriaalpineamazonamphibiousandroidAnil Bachooappappleappointmentsappsarabiaargentinaarnold schwarzeneggerArtashok leylandasiaastonaston martinauctionaudiaustraliaaustriaautoauto shanghaiauto showautonomous carautonomus carAutopilotaventadorawardsAxessBagatellebahrain grand prixBAIBaie-du-TombeaubajajBangkok International Motor ShowBangkok Motor ShowBangladeshbatmobilebatterybattlebeachesBeau-BassinbeetleBeijing Motor ShowBelgiumbentleybernie ecclestonebetamaxbetamax casebicyclebicyclesbikebikesbiodieselbmwboatboatsBogota Auto ShowBois-Marchand accidentBologna Motor ShowbondboschBPObrabusbrakesbrazilbribebribesbridgestonebriobudgetbugattibuggybuickburnoutbusbusesbuyingbydcadillaccamaroCanadacarcar buying tipscar dealerscar importcar marketcar rentcar rentalcar salescar servicecar sharingcar theftcar washcarbon fiberCarPlaycarscartingCaudanCCIDCCTVCEBcelebretiescelebritiesCESChamp-de-MarsChengdu Motor ShowcherychevroletChicago Auto ShowchinaCHINESE GRAND PRIXChris Evanschryslercitroencivicclassicclassic carsclassicscommercialcomparisonconceptconceptsconsumer reportsconvertiblecoromandelcorruptioncorvetteCourtCourtsCPBcr-vcrashcrash testcrash testscrossovercrowdfundingCubaCurepipecustom carCUVCWAdaciadaihatsudaimlerdakardartzdash camdashcamdatsunDelhi Auto ExpodesignDetroitDetroit Auto Showdieseldiesel scandalDIYDLCdodgedragdrag battledrag racedrag racingdriftdriftingdriverless cardrivingdriving licensedriving schooldriving schoolsdriving testdriving tipsdronedronesdrugsdrunk drivingdsDubaiDubai Motor ShowducatiearthquakeEbayebeneecoecologyeconomyelectricelon muskengen motor showengineenginesEOCethanoletios livaEUEuropeeveventsexpofacebookfakeFast And FuriousFernando AlonsoferrariferryfiatfiestafilmsfinancesfinefinlandFirefiskerfitness centerFlacqFlic-en-FlacFloodsflying carFootballForbach accidentforce indiafordformula1forza motorsportFrancefrankfurtfrankfurt motor showfraudFSCfuelfuel economy scandalfuel pricefuel stationfuel stationsfunnyfutureGaikindo Indonesia International Auto ShowgamesgeargeelygenesisGeneva Auto Showgeneva motor showGermanygirlsgmgodzillagolfGoodlandsgooglegoogle glassGoProgovernmentgpsgran turismogrand tourgreat wallgreecegreengreen energygrnoGRSE accidentGTAGymkhanahackershakershamannharley-davidsonHatchbackhellcatherohistoryhitachiholdenHollandHollywoodhondaHong Konghorsepower falsifyinghospitalshot wheelshotelhotelshoverbikehoverboardhow toHuayrahummerhumorhurricanehybridhydrogenhyundaii3i40ICACiframacIIHSIMCimportindiaIndian OilindicaIndonesiaIndonesia International Motor Showindonesia motor showinfinitiInfinityinfrastructureinsuranceintelinteriorinteriorsiPadiphoneiranirelandIRPisraelisuzuitaliaItalyjaguarjamesjames bondJames Mayjapanjapaneese carsjapanese carjapanese carsjazzJDMjeepJeremy Clarksonjettakartkawasakikei carken blockKenyakhankiaKoenigseggkoreaKoshik ReesaulKTMLALA Auto ShowLa Vigielamborghinilancialandland cruiserland roverlawsleallegolexuslicenselight metroLionel Messilotuslow cost carLRTluxuryluxury carluxury carsm3mad maxMadagascarmahindramaintenancemalaysiamanmapsmarketmarketingmartinmarutimaruti suzukimaseratiMatt LeBlancMauritiansmauritiusmaybachmazdaMcLarenmecedesmercedesmetroMetro Expressmexicomichael schumacherMicrosoftMidlandsminimitsubishiMMMmonacomonaco grand prixMontebello accidentmontereymoparMoroccomotomotormotor showMotor vehicle test centremotorcyclemotorcyclesmotorsportmotorsportsmotosportmoviesmpvMRAmugenmuscle carMusicmustangmv agustaMVDANandanee Soornacknanonascarnavigation systemnavigation systemsNavin RamgoolamNCGNDUNepalnetherlandsnew carnew york auto shownew zealandnfsNHTSANigerianissanissannorwayNTANTCNurburgringoff-roadoffroadOlympic Gamesopelpaganipagani huayraPakistanPamplemoussespanasonicParisparis motor showparkingPebble Beachpenaltiespenalty pointspeugeotPhilippinesPhoenixpickuppickupspininfarinapirelliPitonplayboyPNQpolandpolarispolicepoliticspollutionpontiacporscheporsheportPort LouisPort-LouisPPCPPPprankpricespriusproguardprotestsprotonPSApublic transportpublict transportQ3qorosquatre-bornesr8Raceracingrallyramrangerange roverratingsRDArecallrecallsrecordrecordsred bullreduitrenaultrenderingrent a carreplicaReunionRHTRiambelRichard DuvalRichard HammondrickshawrimacRing Roadrioroadroad accidentroad rules & regulationsroad safetyRoad Traffic ActRoad Traffic Amendment Actroadsroads safetyrobotsRodriguesrolls-royceromeoRose-HillroverRoyal EnfieldRRSRSUrumoursRussiasaabsafetysafety ratingssafety testsafety testssalesamsungsamusao paulo auto showSao Paulo Motor Showsaudisaudi arabiascamscandalscaniaschool busscooterscootersseatsecond hand carssecond hand cars importself driving carself-drivingself-driving carself-driving carsSEMASEMA showSeoul Motor Showservice stationsShanghaishanghai motor showshelbyShellshowsingaporeskodaSlovakiasmartSobrinho caseSohail Sesungkursolar energysoreze accidentsoulsound systemssouthsouth africasouth koreaspainspare partsspeed camerasspeedingsportSportscarspy shotsssang yongSsangYongstar warsstartupstatisticsSTCstreet racingstrikestudysubaruSudhir SesungkursudysupecarssupercarssurveySUVsuzukiSwedenswiftSwitzerlandTATaiwantakataTarisa Resorttatataxtax fraudtaxestaxiTBStechnlogytechnolgytechnologyTerre-RougeTerre-Rouge–Verdunteslatest driveteststhailandThailand International Motor ExpoThe Grand TourthefttipstiresTMRSUtokyoTokyo Auto Salontokyo motor showtoptop geartoyotatoystrailertransformerstransporttrendstricksTriolettriumphtrucktruckstsunamituningTurkeytvstyresUAEuberUBSukukraineunionsuomuralUSused carused carsVacoasVacoas-Phoenixvanvarma casevehicle inspectionVehiclesvelosterVictoria stationvideoVienna Auto ShowvietnamVintagevintage carsVipervivo energyvolkswagenvolvovwwheelsWorldyamahayariszagato
Vendez Votre Auto