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Stabilization of oil-contaminated soils using cement and cement by-pass dust

机译：使用水泥和水泥旁路粉尘稳定油污土壤

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摘要

Purpose - To investigate the effect of cement and cement by-pass dust (CBPD) as a stabilizer on the geotechnical properties of oil-contaminated soils resulting from leaking underground storage tanks, or soils surrounding petroleum refineries and crude oil wells. Design/methodology/approach - Oil-contaminated soil (untreated soil) and a soil treated by bio-remediation (treated soil) as well as a natural soil were obtained from Northern Oman. These soils were stabilized with cement and cement by-pass dust at 0,5,10,15 and 20 percent, by dry weight of the soil, and cured for seven, 14 and 28 days. Compaction, compressive strength, direct shear, permeability and leaching tests were carried out on the stabilized soils. Findings - The results indicate that cement and cement by-pass dust improve the properties of oil-contaminated soils. Traces of arsenic, barium, cadmium, chromium and lead were found in the oil soils, but none of them exceeded the EPA limits. Practical implications - Reuse in construction applications provides a safe and useful solution for the problem of the disposal of oil-contaminated soils. Originality/value - The paper addresses an environmental problem facing many oil companies in disposing of or treating contaminated soil. The approach presented in the paper offers a beneficial, safe and economical solution to this problem.
机译：目的-研究水泥和水泥旁路粉尘（CBPD）作为稳定剂对由于地下储罐泄漏或炼油厂和原油井周围土壤造成的石油污染土壤的岩土特性的影响。设计/方法/方法-受油污染的土壤（未经处理的土壤）和经过生物修复处理的土壤（经处理的土壤）以及天然土壤均购自阿曼北部。用土壤干重分别为0、5、10、15和20％的水泥和水泥旁路粉尘稳定这些土壤，并固化7、14和28天。在稳定的土壤上进行了压实，抗压强度，直接剪切，渗透性和浸出试验。研究结果-结果表明，水泥和水泥旁路粉尘可改善油污土壤的特性。在油性土壤中发现了痕量的砷，钡，镉，铬和铅，但没有一个超过EPA限值。实际意义-在建筑应用中的重复使用为处理受油污染的土壤提供了安全和有用的解决方案。原创性/价值-该论文解决了许多石油公司在处理或处理受污染土壤时面临的环境问题。本文提出的方法为该问题提供了有益，安全和经济的解决方案。

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