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The Influence of Crude Oil on Mechanistic Detachment Rate Parameters

机译：原油对机械分离速率参数的影响

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Iraqi soil contamination greatly influenced soil detachment. Previous researchers have not been able to predict the influence of crude oil soil contamination on either the mechanistic dimensional detachment parameter b 0 or the threshold parameter b 1 of the mechanistic detachment model (Wilson model). The aims of this research were (1) to investigate the influence of crude oil on deriving Wilson model parameters, b 0 and b 1 , with two setups at different scales and different soil moisture contents and (2) to predict b 0 and b 1 in crude oil contaminated dry soils with varying levels of contamination. The “mini” JET apparatus was implemented under laboratory conditions for soil specimens packed at both a small (standard mold) and a large (in-situ soil box) scale. The results showed an inverse correlation between b 0 and water content for clean soil. No correlation between b 0 and soil moisture content was observed for contaminated soils. There was a huge reduction in the b 0 value as the contamination time increased compared to the clean soil. This was related to the role crude oil plays in soil stabilization. Crude oil contamination significantly increased lead contamination level while slightly increasing the pH and total organic carbon. The influence of crude oil on mechanistic soil detachment can be predicted with a priori JET experiments on soils without crude oil based on crude oil parameters.
机译：伊拉克的土壤污染极大地影响了土壤的脱离。先前的研究人员无法预测原油土壤污染对机械分离模型（Wilson模型）的机械尺寸分离参数b 0或阈值参数b 1的影响。这项研究的目的是（1）研究原油对推导Wilson模型参数b 0和b 1的影响，并采用两种规模和土壤水分含量不同的设置，以及（2）预测b 0和b 1在原油污染的干土壤中污染程度各不相同。 “小型” JET设备是在实验室条件下安装的，用于以小尺寸（标准模具）和大尺寸（原位土壤箱）包装的土壤标本。结果表明，b 0与清洁土壤中的水分含量呈反比关系。对于被污染的土壤，b 0与土壤水分之间没有相关性。与污染土壤相比，随着污染时间的增加，b 0值大大降低。这与原油在土壤稳定中的作用有关。原油污染显着增加了铅污染水平，同时略微增加了pH值和总有机碳。可以通过基于原油参数的先验JET实验在不含原油的土壤上预测原油对机械性土壤分离的影响。

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