摘要
运用生命周期评价(LCA)的方法,以原料生长、原料运输、活性炭制备和活性炭吸附CO_2 4个阶段为系统边界,对2种不同方法制备的铜藻基活性炭系统进行分析,计算其全生命周期温室气体(GHG)排放量。结果表明:每生产1 kg活性炭,ZnCl_2活化法活性炭(ZAC)和水热炭化-KOH活化法活性炭(HKAC)全生命周期温室气体净排放量(以CO_2-eq计)分别为5.926 kg和7.734 kg;活性炭制备阶段电力消耗带来的间接温室气体排放是最大的排放源;提高活性炭得率和活性炭中碳元素含量有利于减少制备阶段的直接温室气体排放。最后,依据计算和分析结果给出相应建议,以期对活性炭生产与应用过程的碳减排研究提供参考。
The method of life cycle assessment（LCA） was applied to calculate greenhouse gas（GHG） emission of Sargassum Horneri-based activated carbon which was prepared by two different methods. The system boundary includes growth of Sargassum Horneri,transportation of Sargassum Horneri,preparation of activated carbon and CO_2 adsorption using activated carbon. The results indicate that the net GHG emission per kg of ZAC and HKAC is 5.926 kg CO_2-eq and7.734 kg CO_2-eq,respectively. The largest emission source is the indirect GHG emission caused by power consumption in the stage of activated carbon preparation. Improving the yield of activated carbon and the carbon content in activated carbon is conductive to reducing the direct GHG emission. Finally,in order to provide a reference for the study of GHG emission reduction in activated carbon industry,some suggestions are put forward according to the results.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2015年第12期262-266,共5页
Environmental Science & Technology
基金
浙江省科技厅公益项目(2013C33005)
