Composting of oiled bleaching earth: Fatty acids degradation, phytotoxicity and mutagenicity changes
Composting of oiled bleaching earth: Fatty acids degradation, phytotoxicity and mutagenicity changes
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DOI：
10.1016/j.ibiod.2012.12.007
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发表时间：
2013-03
影响因子：
4.8
通讯作者：
A. Piotrowska-Cyplik;Ł. Chrzanowski;P. Cyplik;J. Dach;A. Olejnik;J. Staninska;J. Czarny;A. Lewicki;R. Marecik;J. Powierska-Czarny
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文献类型：
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作者：
A. Piotrowska-Cyplik;Ł. Chrzanowski;P. Cyplik;J. Dach;A. Olejnik;J. Staninska;J. Czarny;A. Lewicki;R. Marecik;J. Powierska-Czarny
由于高脂肪含量，含油漂白土的处理非常具有挑战性。这种废物的中和可以通过采用堆肥过程来进行。在这项研究中，堆肥过程中进行了19%的商业含油漂白土的废污泥的效率进行了评估。玉米秸秆被用作结构材料。在生物降解过程中测定了脂肪酶和脂肪酶的活性。由于堆肥，C/N比发生变化（从31到15）和脂肪酸的生物降解效率达到95%。堆肥过程还消除了堆肥最初的植物毒性。成熟的堆肥没有表现出任何形式的植物毒性与Phytotoxkit试验期间。艾姆斯试验排除了堆肥中任何组分的致突变性。这些结果表明，建议的堆肥方法可能会被用于快速和有效的修复工业废物含油漂白土和废弃污泥。
Due to high fat content the treatment of oiled bleaching earth is very challenging. The neutralization of such waste may be carried out by employing the composting process. In this study, the efficiency of the composting process conducted with 19% addition of commercial oiled bleaching earth to waste sludge was evaluated. Maize straw was used as a structural material. The activity of lipases and dehydrogenases was measured during the biodegradation process. As a result of composting, changes in C/N ratio occurred (from 31 to 15) and the efficiency of fatty acids biodegradation reached 95%. The composting process also resulted in the removal of the initial phytotoxicity of composts. The mature compost did not exhibit any form of phytotoxicity during assays with Phytotoxkit. The Ames test excluded mutagenicity of any components in the compost. These results suggest that the proposed composting method may potentially be employed for rapid and efficient remediation of industrial waste containing oiled bleaching earth and waste sludge.