CAJ | 학술논문

采用生命周期评价法研究了食用油聚酯(PET)包装的生命周期环境影响,并对不同处置方式的环境影响进行比较评价. 通过现场和资料调研的方式获得所有生命周期阶段的能量物质的输入、输出和环境外排数据. 结果表明:PET包装原料获取阶段的环境影响潜值在全生命周期环境影响潜值中所占比例极高,占处置前环境影响潜值的81.8%. PET包装的全生命周期环境影响类别主要集中在化石燃料、无机物对人体损害和气候变化3个方面;在致癌、生态毒性和酸化/富营养化等方面的影响较小. 3种主要处置方式的环境影响潜值为焚烧＞填埋＞再生,其中焚烧和填埋分别增加PET包装处置阶段前环境影响潜值的5.1%和3.6%,而再生可降低63.9%.
채용생명주기평개법연구료식용유취지(PET)포장적생명주기배경영향,병대불동처치방식적배경영향진행비교평개. 통과현장화자료조연적방식획득소유생명주기계단적능량물질적수입、수출화배경외배수거. 결과표명:PET포장원료획취계단적배경영향잠치재전생명주기배경영향잠치중소점비례겁고,점처치전배경영향잠치적81.8%. PET포장적전생명주기배경영향유별주요집중재화석연료、무궤물대인체손해화기후변화3개방면;재치암、생태독성화산화/부영양화등방면적영향교소. 3충주요처치방식적배경영향잠치위분소＞전매＞재생,기중분소화전매분별증가PET포장처치계단전배경영향잠치적5.1%화3.6%,이재생가강저63.9%.
Life Cycle Assessment (LCA) was used to examine the environmental impacts over the life cycle of polyethylene terephthalate (PET) package of cooking oil, and to compare the environmental impacts from different disposal modes. The data of mass and energy fluxes and the environmental emissions in all life cycles were obtained from site investigations and literature. The results show that the environmental impact from PET package raw material supply period was the highest, over 81.8% of total environmental impacts in its life cycle before disposal stage. The environmental impacts mainly come from fossil fuel consumption, damage to respiratory effects from inorganic substances and climate change. The contribution of carcinogens, ecotoxicity and acidification/eutrophication were less. In comparison of three disposal modes (incineration, landfill and recycling) of PET packaging, the environmental impact in incineration treatment was the highest, followed by landfill and then recycling. Compared to the environmental impact before PET packaging enters the waste stream, incineration and landfill could increase the impact by 5.1% and 3.6%. In contrast, recycling could reduce 63.9% of the environmental impact.