
The global aviation industry is responsible for 12% of carbon emissions from all transports sources and around 2% of all human produce carbon dioxide emissions. Aviation’s share of greenhouse gas emissions will likely grow in the coming years as air travel increases.
航空旅行における持続可能なエネルギーの台頭
燃料費の高騰という事実と相まって、航空会社は航空機の動力源としてバイオ燃料を検討する意欲がさらに高まっています。航空機メーカー、科学者、学者は、持続可能な航空燃料ユーザーグループや藻類バイオマス組織などの団体に結集し、航空用の持続可能なバイオ燃料の利用を開発しています。
環境負荷の削減
Biofuels represent the most viable means to cut carbon emissions for airlines and remain the key building block in the airline industry’s goal of carbon-neutral growth. There has been much development in designs and material to improve fuel efficiency and other alternative energy sources like solar power remain in initial stages. Biofuels would not require modifications to commercial airplanes; they would just replace the current Jet-A fuel.
Some airlines like KLM, Finnair, and Continental Airlines have used biofuels on commercial flights shortly after international aviation regulators approved the use of biofuels in 2011. Other airlines around the world may likely follow suit.
戦略的課題
大手航空会社やメーカーはバイオ燃料の使用に前向きであるにもかかわらず、バイオ燃料の入手性とコストが普及を阻む最大の要因となっている。航空輸送アクション・グループによると、現在、航空機用バイオ燃料はジェット燃料の3~5倍のコストがかかる。商業的にはバイオ燃料産業はまだ初期段階にあり、メーカーは需要の増加に対応できない可能性がある。
Neste Oil the supplier of Lufthansa’s biofuel during its six-month test flights, could not produce the airlines required amount. Aviation officials urged government during the July 2012 Farnborough Airshow to help implement policies to create a flourishing market in sustainable market in biofuels similar to initiatives that helped alternative fuels in road transport.
バイオ燃料は、環境面でマイナス面ももたらす可能性がある。バイオ燃料用の作物を栽培するための土地の需要は、貧困国の農業にさらなる圧力をかけ、既存の自然生息地を奪う可能性がある。また、燃料作物を栽培するために森林や草原を焼き払うことで、追加の炭素排出が生じるのではないかという懸念も高まっている。
チャンス
There have also been concerns that using crops like sugar cane and corn to create biofuels could push food prices higher following the poor harvest in growing regions. To counter that assertion, airlines may have to look at second-generation fuels using non-food crops like camelina and jatropha. The industry is also investigating ways to develop aviation fuel from municipal waste, of which lack of supply may not be a problem as the megacities around the world can produce millions of tons of organic waste to convert into biofuels.
The aviation industry is increasingly seeing potential in biofuels but the widespread adoption of biofuels still faces many challenges, more testing, and government support before jet fuel consumption can be reduced.
航空会社の持続可能性市場調査について
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