Abstract：
:The aims of this study were to assess changes in heavy metal availability in two contrasting feedstocks during aerobic composting, and the availability of said metals in the finished composts. A high C-to-N ratio mixed biodegradable municipal solid waste (MSW) feedstock was successfully composted on its own and in combination with green waste. Changes in heavy metal speciation throughout the composting process were studied using the modified BCR sequential extraction protocol. It was found that total Cu, Pb and Zn concentrations increased over time due to the progressive mineralization of the compost feedstock. Metals were fractionated differently within the two feedstocks, although only Cu showed significant redistribution (mostly to the oxidisable fraction) over the 5 month composting period. The MSW-derived composts performed comparably with other commercially-available composts in a series of plant growth trials. Plant metal accumulation was not influenced by the heavy metals present in the MSW-derived compost implying that they are not plant available. It is recommended that these relatively low value/quality composts may be used for remediation of acidic heavy metal contaminated sites.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Farrell M,Jones DLdoi
10.1016/j.biortech.2009.04.023subject
Has Abstractpub_date
2009-10-01 00:00:00pages
4423-32issue
19eissn
0960-8524issn
1873-2976pii
S0960-8524(09)00388-5journal_volume
100pub_type
杂志文章abstract：:Air pressure pulsation solid state fermentation (APP-SSF) was applied to produce feruloyl esterase (FAE) by Aspergillus niger. With the optimization of some variables by orthogonal design, the optimal condition obtained was 0.2 MPa (gauge pressure) of high pressure intensity, 30 min of low pressure duration and 20s of...
journal_title：Bioresource technology
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更新日期：2007-12-01 00:00:00
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pub_type： 杂志文章
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更新日期：2012-06-01 00:00:00
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pub_type： 杂志文章
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pub_type： 杂志文章
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更新日期：2018-05-01 00:00:00
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journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2012.06.032
更新日期：2012-09-01 00:00:00
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更新日期：2015-12-01 00:00:00
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更新日期：2020-03-06 00:00:00
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更新日期：2020-02-01 00:00:00
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更新日期：2011-11-01 00:00:00
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更新日期：2008-05-01 00:00:00
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更新日期：2011-03-01 00:00:00
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