Leitgib Laura, Gruiz Katalin, Fenyvesi Eva, Balogh Gábor, Murányi Attila
Budapest University of Technology and Economics, Department of Applied Biotechnology and Food Science, Budapest, Gellért tér 4, H-1111 Hungary.
Sci Total Environ. 2008 Mar 15;392(1):12-21. doi: 10.1016/j.scitotenv.2007.10.055. Epub 2007 Dec 21.
This paper introduces an in situ "Cyclodextrin-enhanced soil bioremediation technology" which is a combination of 1. in situ bioventilation for biodegradation in the unsaturated soil zone; 2. physico-chemical treatment of the pumped ground water; 3. impulsive flushing for the three-phase soil. For enhancement of biodegradation and solubilization randomly methylated beta-cyclodextrin (RAMEB) was used. An additional aim of this study was to prove the importance of the technology monitoring which was used for characterisation of the soil processes by an integrated methodology. It consists of physico-chemical, biological and ecotoxicological methods specific for the contaminants. For technology monitoring the mobile soil phases--soil gas and ground water--were analysed. Sampling of the whole soil was carried out at the start and end of the technology application. RAMEB resulted in the enhanced removal of pollutants both from the saturated and unsaturated soil zones. Moreover, the biodegradation was more effective than the pump and treat technology, proved by the establishment of the carbon material balance in all soil phases.
本文介绍了一种原位“环糊精强化土壤生物修复技术”，该技术结合了以下几点：1. 非饱和土壤区原位生物通风以进行生物降解；2. 对抽取的地下水进行物理化学处理；3. 对三相土壤进行脉冲冲洗。为了增强生物降解和增溶作用，使用了随机甲基化β-环糊精（RAMEB）。本研究的另一个目的是证明技术监测的重要性，该监测通过综合方法用于表征土壤过程。它由针对污染物的物理化学、生物学和生态毒理学方法组成。为了进行技术监测，分析了流动的土壤相——土壤气体和地下水。在技术应用开始和结束时对整个土壤进行了采样。RAMEB使饱和和非饱和土壤区的污染物去除率均得到提高。此外，通过在所有土壤相中建立碳物质平衡证明，生物降解比泵吸处理技术更有效。
