期刊
BIORESOURCE TECHNOLOGY
卷 104, 期 -, 页码 497-502出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.11.021
关键词
Steel slag; Abiotic humification; Humic-like acids; Re-utilization
资金
- Naito Taisyun Science and Technology Foundation of Japan
- Key Laboratory for Solid Waste Management and Environment Safety, Ministry of Education of China [SWMES2010-12]
- Grants-in-Aid for Scientific Research [21310048] Funding Source: KAKEN
Carbonated basic oxygen furnace steel slag (hereinafter referred to as steel slag) is generated during iron and steel manufacturing and is often classified as waste. The effect of steel slag on humification process was investigated. Catechol, glycine and glucose were used as model humic precursors from degraded biowastes. To verify that humification occurred in the system, humic-like acids (HLAs) were isolated and characterized structurally by elemental analysis, FUR spectra, solid-state CP-MAS C-13 NMR spectra, and TMAH-Py-GC/MS. Characteristics of the steel slag-HLA were compared with those of HLAs formed in the presence of zeolite and birnessite, and with that of mature compost humic acid. The results showed that steel slag-HLA, like zeolite- and birnessite-HLA, is complex organic material containing prominent aromatic structures. Steel slag substantially accelerated the humification process, which would be highly significant for accelerating the stabilization of biowastes during composting (e.g. municipal solid waste, sewage sludge, and food waste). (C) 2011 Elsevier Ltd. All rights reserved.
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