CAJ | 학술논문

以棉籽油甲酯、乙酯生物柴油及其与石化柴油形成的调和油为研究对象,采用改进的Sturm试验方法,考察了生物柴油及其调和油的生物降解特点.研究表明:在有氧的水环境中生物降解28 d,棉籽乙酯生物柴油与甲酯生物柴油生物降解率分别达99.7%和99.1%;对甲酯生物柴油而言,生物柴油体积分数为50%和20%的调和油的28 d生物降解率分别为93.8%和80.8%,而乙酯生物柴油体积分数为50%和20%的调和油的28 d生物降解率分别95.7%和81.9%,但在相同条件下,0#柴油生物降解率仅49.9%;生物柴油在调和油中体积比越大,调和油的生物降解速度越快,生物柴油对石化柴油的生物降解具有促进作用.该文对认识棉籽油生物柴油在环境巾的消解规律,控制环境污染具有一定的意义.
이면자유갑지、을지생물시유급기여석화시유형성적조화유위연구대상,채용개진적Sturm시험방법,고찰료생물시유급기조화유적생물강해특점.연구표명:재유양적수배경중생물강해28 d,면자을지생물시유여갑지생물시유생물강해솔분별체99.7%화99.1%;대갑지생물시유이언,생물시유체적분수위50%화20%적조화유적28 d생물강해솔분별위93.8%화80.8%,이을지생물시유체적분수위50%화20%적조화유적28 d생물강해솔분별95.7%화81.9%,단재상동조건하,0#시유생물강해솔부49.9%;생물시유재조화유중체적비월대,조화유적생물강해속도월쾌,생물시유대석화시유적생물강해구유촉진작용.해문대인식면자유생물시유재배경건적소해규률,공제배경오염구유일정적의의.
The biodegradabilities of biodiesels prepared from cotton seed oil via methyl or ethyl were investigated by the OECD 301B Modified Sturm Method. In aquatic aeration cultures, pure cotton seed oil methyl and ethyl estersbiodegradability rates was 99.7% and 99.1%, respectively, after 28 days; Biodegradability rates of cotton seed oil methyl and ethyl esters in samples of B50 was 93.8% and 95.7%, respectively, after 28 days. Biodegradability rates of cotton seed oil methyl and ethyl esters in samples of B20 was 80.8% and 81.9%, respectively, after 28 days, but only 49.9% of fossil diesel was decomposed at the same condition. The more the cotton seed oil methyl and ethyl esters in mixtures were, the easier the biodegradability was. The biodegradability of the fuel mixture was enhanced by adding biodiesel.The research contributes to understand the decomposition characteristics of biodiesel via cotton seed oil, and also helps to control environment pollution.