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Life-Cycle Assessment Harmonization and Soil Science Ranking Results on Food-Waste Management Methods

机译：食品废物管理方法的生命周期评估协调与土壤科学排名结果

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摘要

This study reviewed 147 life cycle studies, with 28 found suitable for harmonizing food waste management methods' climate and energy impacts. A total of 80 scientific soil productivity studies were assessed to rank management method soil benefits. Harmonized climate impacts per kilogram of food waste range from -0.20 of carbon dioxide equivalents (CO_(2e)) for anaerobic digestion (AD) to 0.38 kg of CO_(2e) for landfill gas-to-energy (LFGTE). Aerobic composting (AC) emits -0.10 kg of CO_(2e). In-sink grinding (ISG) via a food-waste disposer and flushing for management with other sewage at a wastewater treatment plant emits 0.10 kg of CO_(2e). Harmonization reduced climate emissions versus nonharmonized averages. Harmonized energy impacts range from -0.32 MJ for ISG to 1.14 MJ for AC. AD at 0.27 MJ and LFGTE at 0.40 MJ fall in between. Rankings based on soil studies show AC first for carbon storage and water conservation, with AD second. AD first for fertilizer replacement, with AC second, and AC and AD tied for first for plant yield increase. ISG ranks third and LFGTE fourth on all four soil-quality and productivity indicators. Suggestions for further research include developing soil benefits measurement methods and resolving inconsistencies in the results between life-cycle assessments and soil science studies.
机译：这项研究回顾了147个生命周期研究，其中28个研究适合于协调食物垃圾管理方法对气候和能源的影响。总共评估了80项科学的土壤生产力研究，以对管理方法的土壤效益进行排名。每千克食物垃圾的协调气候影响范围从厌氧消化（AD）的-0.20二氧化碳当量（CO_（2e））到垃圾填埋气化能源（LFGTE）的0.38 kg CO_（2e）。好氧堆肥（AC）排放-0.10千克的CO_（2e）。通过食物垃圾处理器进行的水槽内研磨（ISG）以及在废水处理厂进行冲洗以与其他污水进行管理，可排放0.10千克的CO_（2e）。与非统一平均值相比，协调减少了气候排放量。协调的能量影响范围从ISG的-0.32 MJ到AC的1.14 MJ。 AD在0.27 MJ和LFGTE在0.40 MJ之间。根据土壤研究得出的排名显示，AC首先用于碳存储和节水，其次是AD。 AD首先用于肥料替代，其次是AC，AC和AD并列第一以增加植物产量。在所有四个土壤质量和生产力指标上，ISG排名第三，LFGTE排名第四。进一步研究的建议包括开发土壤效益测量方法，以及解决生命周期评估与土壤科学研究之间结果不一致的问题。

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  • 来源
    《Environmental Science & Technology》 |2017年第10期|5360-5367|共8页
  • 作者

    Jeffrey Morris; Sally Brown; Matthew Cotton; H. Scott Matthews;

  • 作者单位

    Sound Resource Management Group, Inc., Olympia, Washington 98502, United States;

    Ecosystem Science Division, College of Forest Resources, University of Washington, Seattle, Washington 98195, United States;

    Integrated Waste Management Consulting, LLC, Nevada City, California 95959, United States;

    Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States,Department of Engineering and Public Policy, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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