Heavy metals mobility in full-scale bioreactor landfill: Initial stage

Xian Qu; Pin-Jing He; Li-Ming Shao; Duu-Jong Lee

doi:10.1016/j.chemosphere.2007.07.013

Heavy metals mobility in full-scale bioreactor landfill: Initial stage

Xian Qu, Pin-Jing He, Li-Ming Shao, Duu-Jong Lee

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

55 Citations (Scopus)

Abstract

Selected heavy metals (HMs) including Cd, Cr, Cu, Ni, Pb and Zn initially released from a full-scale bioreactor landfill were monitored over the first 20 months of operation. At the initial landfill stage, the leachate exhibited high HMs release, high organic matter content (27 000-43 000 g l^-1 of TOC) and low pH (5-6). By the fifth month of landfilling, the methanogenic stage had been established, and HMs release was reduced below the Chinese National Standards. Total released HMs accounted for less than 1% of landfill deposited during the investigated period. Most landfill HMs were inorganic. Fourier-transform infrared (FT-IR) spectra data and model calculations using Visual MINTEQ indicated that humic substances strongly affected the mobility of organic fractions of HMs in the methanogenic landfill. The initial rates of HMs release could be enhanced by recycling the leachate back to bioreactor landfill, but the total quantity released may be reduced by early establishment of methanogenic stage in bioreactor landfill. © 2007 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	769-777
Journal	Chemosphere
Volume	70
Issue number	5
DOIs	https://doi.org/10.1016/j.chemosphere.2007.07.013
Publication status	Published - Jan 2008
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 12 Responsible Consumption and Production

Research Keywords

Bioreactor landfill
Heavy metals
Humic substances
Solid-phase fractionation
Visual MINTEQ

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10.1016/j.chemosphere.2007.07.013

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abstract = "Selected heavy metals (HMs) including Cd, Cr, Cu, Ni, Pb and Zn initially released from a full-scale bioreactor landfill were monitored over the first 20 months of operation. At the initial landfill stage, the leachate exhibited high HMs release, high organic matter content (27 000-43 000 g l-1 of TOC) and low pH (5-6). By the fifth month of landfilling, the methanogenic stage had been established, and HMs release was reduced below the Chinese National Standards. Total released HMs accounted for less than 1% of landfill deposited during the investigated period. Most landfill HMs were inorganic. Fourier-transform infrared (FT-IR) spectra data and model calculations using Visual MINTEQ indicated that humic substances strongly affected the mobility of organic fractions of HMs in the methanogenic landfill. The initial rates of HMs release could be enhanced by recycling the leachate back to bioreactor landfill, but the total quantity released may be reduced by early establishment of methanogenic stage in bioreactor landfill. {\textcopyright} 2007 Elsevier Ltd. All rights reserved.",

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T1 - Heavy metals mobility in full-scale bioreactor landfill

T2 - Initial stage

AU - Qu, Xian

AU - He, Pin-Jing

AU - Shao, Li-Ming

AU - Lee, Duu-Jong

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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N2 - Selected heavy metals (HMs) including Cd, Cr, Cu, Ni, Pb and Zn initially released from a full-scale bioreactor landfill were monitored over the first 20 months of operation. At the initial landfill stage, the leachate exhibited high HMs release, high organic matter content (27 000-43 000 g l-1 of TOC) and low pH (5-6). By the fifth month of landfilling, the methanogenic stage had been established, and HMs release was reduced below the Chinese National Standards. Total released HMs accounted for less than 1% of landfill deposited during the investigated period. Most landfill HMs were inorganic. Fourier-transform infrared (FT-IR) spectra data and model calculations using Visual MINTEQ indicated that humic substances strongly affected the mobility of organic fractions of HMs in the methanogenic landfill. The initial rates of HMs release could be enhanced by recycling the leachate back to bioreactor landfill, but the total quantity released may be reduced by early establishment of methanogenic stage in bioreactor landfill. © 2007 Elsevier Ltd. All rights reserved.

AB - Selected heavy metals (HMs) including Cd, Cr, Cu, Ni, Pb and Zn initially released from a full-scale bioreactor landfill were monitored over the first 20 months of operation. At the initial landfill stage, the leachate exhibited high HMs release, high organic matter content (27 000-43 000 g l-1 of TOC) and low pH (5-6). By the fifth month of landfilling, the methanogenic stage had been established, and HMs release was reduced below the Chinese National Standards. Total released HMs accounted for less than 1% of landfill deposited during the investigated period. Most landfill HMs were inorganic. Fourier-transform infrared (FT-IR) spectra data and model calculations using Visual MINTEQ indicated that humic substances strongly affected the mobility of organic fractions of HMs in the methanogenic landfill. The initial rates of HMs release could be enhanced by recycling the leachate back to bioreactor landfill, but the total quantity released may be reduced by early establishment of methanogenic stage in bioreactor landfill. © 2007 Elsevier Ltd. All rights reserved.

KW - Bioreactor landfill

KW - Heavy metals

KW - Humic substances

KW - Solid-phase fractionation

KW - Visual MINTEQ

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DO - 10.1016/j.chemosphere.2007.07.013

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JO - Chemosphere

JF - Chemosphere

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ER -

Heavy metals mobility in full-scale bioreactor landfill: Initial stage

Abstract

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UN SDGs

Research Keywords

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