选定烃类修复技术评价的现场中试研究

E. S. Okonofua, J. Babatola, O. Ojuri
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引用次数: 2

摘要

研究了不同浓度原油污染土壤中植物修复、土地耕作和化学-生物稳定处理对总石油烃(TPH)和多环芳烃(PAH)的修复潜力。实地试点研究在尼日利亚贝宁市进行,制备了9个细胞,并附有亚细胞作为对照;每个单元的面积为1.53平方米。3个细胞含有100公斤低污染浓度(3000 mg kg-1)的人工污染土壤,接下来的3个细胞含有100公斤中等浓度(5000 mg kg-1)的污染土壤样品,最后3个细胞含有100公斤高浓度(7000 mg kg-1)的穗样。这些亚细胞含有10公斤的土壤,未经处理。每个角色含有低、中、高浓度三个细胞,分别采用三种处理方法进行处理。各处理土壤样品与有机改良剂的比例为2:1。结果表明,在不同污染水平下,TPH和PAH的初始浓度降低了90%以上,除对照亚细胞外,仅记录了30%的降低。经过处理的土壤被发现对农业有用。单因素方差分析显示,三种方法的应用结果差异显著,p≤0.05。这表明该方法有效地降解了TPH和PAH浓度。三种不同的处理方法均能有效地降解TPH和PAH污染物,其中土地耕作处理效果最好。
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FIELD PILOT STUDY ON THE ASSESSMENT OF SELECTED HYDROCARBON REMEDIATION TECHNIQUES
The study discussed the remediation potentials of phytoremediation, land farming treatment and chemico-biological stabilization treatments in degrading Total Petroleum Hydrocarbon (TPH) and Polycyclic Aromatic Hydrocarbon (PAH) in soils polluted with crude oil in varying concentrations. The field pilot study was carried out in Benin city, Nigeria by preparing nine (9) cells with sub-cells attached which serve as control; each cell measures 1.53 m2. Three cells contained 100 kg of artificially contaminated soils at low contamination concentration (3000 mg kg-1), the next three cells contained 100 kg of contaminated soil samples but with medium concentration (5000 mg kg-1), while the last three cells contained 100 kg of spike samples in high concentration (7000 mg kg-1). The sub cells contained 10 kg of soil and left untreated. Each role containing three cells with low, medium and high concentration was treated separately using the three treatment methods. Soil samples to organic amendment ratio for the treatments was 2:1. The results showed over 90% reduction in the initial concentration of TPH and PAH across the different contamination levels with except in the control sub cells were only 30% reduction was recorded. The treated soil was found useful for agricultural purpose. One-way analysis of variance reveals a significant difference at p≤0.05 in the results obtained in application of the three methods. This implies that the methods effectively degraded the TPH and PAH concentrations. The three different methods of treatments effectively degraded TPH and PAH contaminants with land farming treatment being the best of the three.
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RETRACTION NOTE TO: ASSESSING SEISMIC SOIL LIQUEFACTION POTENTIAL USING MACHINE LEARNING APPROACH EFFECT OF ADDITION OF CaO ON COMPRESSIVE STRENGTH OF HIGH-VOLUME FLY ASH CONCRETE EDITORIAL SCOPE – WASTE MANAGEMENT AND RECYCLING MATLAB PROGRAM FOR RATING SOILS BASED ON ENGINEERING BEHAVIOURS NONLINEAR LATERAL RESPONSE OF PILE GROUP IN CLAY USING THE MODIFIED CAM CLAY SOIL MODEL
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