Utilization of biomass residues for the remediation of metal-polluted soils
Article Abstract:
The utilization of biomass residues as sources for natural chelates is a new approach to improve the ecological and economical balance of leaching techniques for the remediation of metal-polluted soils. Residues, including molasses, blood meal, and silage effluents, containing various aliphatic carboxylic acids, sugar acids and amino acids, or their precursor compounds were chosen, hydrolyzed and if needed, oxidized, then analyzed for their organic constituents. Soils that were polluted with metals through sewage sludge amendment were removed in batch and column experiments at several pH levels.
Comment:
Use of biomass residues is a new approach to improve balance of leaching techniques for remediation of metal-polluted soils
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1998
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Structural changes in a dissolved soil humic acid during photochemical degradation processes under O2 and N2 atmosphere
Article Abstract:
The exposure of dissolved humic acid to ultraviolet irradiation showed that humic acid's lignic and lipidic components were more sensitive to photodegradation than its carbohydrate, alkylbenzene or nitrogen-containing components. Photoxodization occured at a faster rate in an atmosphere high in oxygen than an atmosphere high in nitrogen. The high oxygen environment is conducive to the selective degradation of humic acid components under UV irradiation.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1998
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