Title

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

Authors

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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