Effects of crude oil contamination on soil physical and chemical properties in Momoge wetland of China

Abstract

Large oilfields are often coincidentally located in major river deltas and wetlands, and potentially damage the structure, function and ecosystem service values of wetlands during oil exploration. In the present study, the effects of crude oil contamination during oil exploration on soil physical and chemical properties were investigated in marshes of the Momoge National Nature Reserve in Jilin Province, China. The concentrations of total petroleum hydrocarbons in the marsh soil near the oil wells are significantly higher than those in the adjacent control marsh. Soil water contents in oil-contaminated marshes are negatively correlated with soil temperature and are significantly lower than those in the control area, especially in fall. Crude oil contamination significantly increases the soil pH up to 8.0, and reduces available phosphorus concentrations in the soil. The concentrations of total organic carbon are significantly different among sampling sites. Therefore, crude oil contamination could potentially alkalinize marsh soils, adversely affect soil fertility and physical properties, and cause deterioration of the marshes in the Momoge National Nature Reserve. Phyto-remediation by planting Calamagrostis angustifolia has the potential to simultaneously restore and remediate the petroleum hydrocarbon-contaminated wetlands. Crude oil contamination affects the soil physical and chemical properties, so developing an effective restoration program in the Momoge wetland is neccesary.

Risk assessment of gas oil and kerosene contamination on some properties of silty clay soil

“…The soil analysis indicated a slight impact of gas oil and kerosene on the soil pH, and it had a tendency to shift toward neutral (Vonloocke et al 1975; Ahmadi et al 1996) and caused the cumulative enhancement in the soil respiration (Fallah et al 2012b;Labud et al 2007), increase in the BD (Kayode et al 2009), organic matter (Okonokhua et al 2007;Wang et al 2013), and the reduction in the soil porosity (Kayode et al 2009) and the electrical (Benka-Coker and Ekunday 1995) and saturated hydraulic conductivity; moreover, the BTC results revealed that the gas oil retention was significantly more than that of kerosene and kerosene flowed out of the soil by sharper gradient and less retardation especially in the application of higher amount of kerosene (Wang et al 2000;Wang and Shao 2009). The reason is that the reactivity of gas oil with the silty clay soil is substantially more than that of kerosene which is probably because of the structural form and its carbonic chain number, and on the other hand, it caused more intense surface absorption (Fallah et al 2012a(Fallah et al , 2013.…”

“…The most increase in the soil organic matter was related to one pore volume of gas oil, half pore volume of gas oil, one pore volume of kerosene, and half pore volume of kerosene, respectively, in the early time after the contamination. The results of various researches on the effects of petroleum distribution showed an increase in the organic carbon and organic matter in the petroleum-polluted soils (Okonokhua et al 2007;Wang et al 2013). …”

Cement stabilisation of crude-oil-contaminated soil

“…USA (Leewis et al, 2013;Horel et al, 2014), Canada (Akbari and Ghoshal, 2014), Argentina (Rios et al, 2014), Italy (Giampaolo et al, 2014), Romania (Marinescu et al, 2014), China (Fu et al, 2014;Wang et al, 2013), Malaysia (Hamzah et al, 2014), India (Yenn et al, 2014), Iran (Khamehchiyan et al, 2007;Rad et al, 2014) and Kuwait (Al-Mailem et al, 2014). The problem is most notable in the Niger Delta region, Nigeria (Onojke and Frank, 2013), where an estimated average of 240,000 barrels of crude oil is spilled every year (Ordinioha and Brisibe, 2013) and is listed among the top ten toxic threats (Blacksmith Institute, 2015).…”

Evaluating the use of spiny pigweed (<i>Amaranthus spinosus</i>) and water leaf (<i>Talinum triangulare</i>) for bioremediation of crude oil polluted soil in Ikarama Community in Bayelsa State Nigeria

“…The presence of high molecular weight compounds with very low solubility in water prevents natural biodegradation process from working efficiently in hydrocarbon contaminated soils (Esin and Ayten, 2011). Oil usually causes anaerobic environment in soil by smothering soil particles and blocking air diffusion in the soil pores, and these affects soil microbial communities (Wang et al, 2013). These compounds also penetrate macro-and micro-pores in soil limiting water and air transport that would be necessary for organic matter conversion.…”

“…The daily maximum surface temperature of hydrocarboncontaminated soils is often higher than that of adjacent control sites. Heavy crude oil pollution can cause complete mortality of marsh vegetation (Wang et al, 2013).…”