期刊
BIORESOURCE TECHNOLOGY
卷 142, 期 -, 页码 209-217出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.04.064
关键词
Adsorption; Carbon; Organic pollutant; Sewage sludge; Wastewater treatment
资金
- Key Program Projects of the National Natural Science Foundation of China [21031001]
- National Natural Science Foundation of China [20971040, 51108162, 51210105014, 21001042, 91122018, 51102082]
- Cultivation Fund of the Key Scientific and Technical Innovation Project, Ministry of Education of China [708029]
- Postdoctoral Science Foundation of China [20110491121]
- Heilongjiang Province [LBH-Z10048]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20112301110002]
- Educational Commission of Heilongjiang Province [11551338, 12521450]
- Youth Foundation of Heilongjiang University [QL2010015]
Purified sludge carbon (PSC) with removal of inorganic 'impurities' (Si, Al, etc.) is prepared from sewage sludge. Morphological structure, textural properties, surface elements and functional groups of sludge carbon (SC) and PSC are compared. S-BET and pore volume of PSC are about three times higher than those of SC. PSC with large fluffy cavities remains some memory of SC parent structure. Removed fractions can be considered as a natural template for producing a hierarchical porous structure in PSC. Abundant oxygen-containing groups including hydroxyl and epoxide are generated in PSC, which are favorable for organic contaminant removal from wastewater. Diffraction peaks at 2 theta = 45 degrees, bending modes of Si-O-Si and Na1s peaks (1070.5 eV) jointly confirm that only a trace of adsorbed impurities (Na2O center dot(SiO2)(x) (x >= 1)) is retained on PSC surface. PSC is superior to SC and comparable to commercial activated carbon for rhodamine B and phenol adsorption capacity. (C) 2013 Published by Elsevier Ltd.
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