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废弃生物降解塑料不同处置技术碳排放分析

李建园 孙昱楠 黄佳乐 陈奇晶 贾悦 高豫乐 程占军 颜蓓蓓 陈冠益

李建园, 孙昱楠, 黄佳乐, 陈奇晶, 贾悦, 高豫乐, 程占军, 颜蓓蓓, 陈冠益. 废弃生物降解塑料不同处置技术碳排放分析[J]. 环境工程, 2023, 41(9): 124-132. doi: 10.13205/j.hjgc.202309015
引用本文: 李建园, 孙昱楠, 黄佳乐, 陈奇晶, 贾悦, 高豫乐, 程占军, 颜蓓蓓, 陈冠益. 废弃生物降解塑料不同处置技术碳排放分析[J]. 环境工程, 2023, 41(9): 124-132. doi: 10.13205/j.hjgc.202309015
LI Jianyuan, SUN Yunan, HUANG Jiale, CHEN Qijing, JIA Yue, GAO Yule, CHENG Zhanjun, YAN Beibei, CHEN Guanyi. CARBON EMISSION ANALYSIS OF WASTE BIODEGRADABLE PLASTICS BY DIFFERENT DISPOSAL TECHNOLOGIES[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(9): 124-132. doi: 10.13205/j.hjgc.202309015
Citation: LI Jianyuan, SUN Yunan, HUANG Jiale, CHEN Qijing, JIA Yue, GAO Yule, CHENG Zhanjun, YAN Beibei, CHEN Guanyi. CARBON EMISSION ANALYSIS OF WASTE BIODEGRADABLE PLASTICS BY DIFFERENT DISPOSAL TECHNOLOGIES[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(9): 124-132. doi: 10.13205/j.hjgc.202309015

废弃生物降解塑料不同处置技术碳排放分析

doi: 10.13205/j.hjgc.202309015
基金项目: 

国家重点研发计划项目(2022YFC3902305)

详细信息
    作者简介:

    李建园(1998-),女,硕士研究生,主要研究方向为固体废弃物生物处置及资源化利用。lijianyuan@stu.tjcu.edu.cn

    通讯作者:

    孙昱楠(1992-),女,讲师,主要研究方向为固废处置与污染物控制。sunyunan@tjcu.edu.cn

CARBON EMISSION ANALYSIS OF WASTE BIODEGRADABLE PLASTICS BY DIFFERENT DISPOSAL TECHNOLOGIES

  • 摘要: 生物降解塑料因其环境友好性引起了广泛关注,但其处置过程中的碳排放情况尚不明晰。随着处置技术的不断研发与应用,不同处置技术的碳排放差异值得探究。基于排放因子法和质量平衡法,从运行能耗间接碳排放、塑料分解直接碳排放和资源回收碳补偿3方面,对6种主要处置技术进行了对比分析。结果表明:处置1 t废弃生物降解塑料,净碳排放量顺序为填埋处置>焚烧处置>化学回收>工业堆肥>厌氧发酵>机械回收。机械回收和厌氧发酵因可实现塑料产品和沼气的资源回收,净碳排放分别为-842.33,-341.55 kg CO2eq,展现出较好的碳减排潜力。其中,机械回收的间接碳排放、直接碳排放和碳补偿分别是其他处置技术的0.62~22.96,0.13~0.52,0.93~1.58倍;厌氧发酵相应分别为0.09~2.11,0.26~1.93,0.59~0.85倍。这表明机械回收相比于厌氧发酵,产生了更多的能源消耗和更高的碳补偿效果,但机械回收仍存在废弃物分拣困难、回收效率低、回收产品性能差等难题;从降碳潜力出发,厌氧发酵更具发展前景。此外,降低运行能耗、助力资源回收、充分发挥碳补偿潜力是实现废弃生物降解塑料处置阶段碳减排的主要措施。从助力"双碳"角度,该成果可为废弃生物降解塑料处置技术的选择提供参考。
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  • 收稿日期:  2023-05-11
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