Evaluation of monitoring indicators for the post-closure care of a landfill for MSW characterized with low lignin content

    Authors

    Waste Manage.

    Comments

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    Abbreviated Journal Title

    Nutrients

    Keywords

    Food waste; Garden waste; Paper; Landfill management; Termination target; value; DISSOLVED ORGANIC-MATTER; SOLID-WASTE LANDFILLS; IN-SITU AERATION; OLD; LANDFILLS; LEACHATE; CARBON; DEGRADATION; MANAGEMENT; DIGESTION; Engineering, Environmental; Environmental Sciences

    Abstract

    To understand the applicability of the termination indicators for landfill municipal solid waste (MSW) with low initial lignin content, four different accelerated landfill stabilization techniques were applied to anaerobic landfilled waste, including anaerobic flushing with water, anaerobic flushing with Fenton-treated leachate, and aerobic flushing with Fenton-treated and UV/H2O2-treated leachate. Termination indicators, including total organic carbon (TOC), ammonia-N (NH4+-N), the ratio of UV absorbance at 254 nm to TOC concentration (SUVA(254)), fluorescence spectra of leachate, methane production, oxygen consumption, lignocellulose content, and humus-like content were evaluated. Results suggest that oxygen consumption related indicators used as a termination indicator for low-lignin-content MSW were more sensitive than methane consumption related indicators. Aeration increased humic acid (HA) and (HA + FA)/HyI content by 2.9 and 1.7 times compared to the anaerobically stabilized low-lignin-content MSW. On the other hand, both the fulvic acid (FA) and hydrophilic (HyI) fractions remained constant regardless of stabilization technique. The target value developed for low-lignin-content MSW was quite different than developed countries mainly due to low residual biodegradable organic carbon content in stabilized low-lignin-content MSW. (C) 2014 Elsevier Ltd. All rights reserved.

    Subjects

    W. Zheng; F. Lu; S. C. Bolyard; L. M. Shao; D. R. Reinhart;P. J. He

    Volume

    36

    Publication Date

    1-1-2014

    Document Type

    Article

    Language

    English

    First Page

    222

    Last Page

    229

    WOS Identifier

    WOS:000349513000026

    ISSN

    0956-053X

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